Merge pull request #121 from Permissionless-Software-Foundation/dh-track-counter-offrs

feat(offers): Track Counter Offers

src/adapters/localdb/index.js

@@ -9,6 +9,9 @@ import Order from './models/order.js'
 import Offer from './models/offer.js'
 import Usage from './models/usage.js'
 import SmAccount from './models/smAccount.js'
+import DeletedChat from './models/deletedChat.js'
+import DeletedPost from './models/deletedPost.js'
+import CounterOffer from './models/counter-offer.js'
 
 class LocalDB {
   constructor () {
@@ -19,6 +22,9 @@ class LocalDB {
     this.Offer = Offer
     this.Usage = Usage
     this.SmAccount = SmAccount
+    this.DeletedChat = DeletedChat
+    this.DeletedPost = DeletedPost
+    this.CounterOffer = CounterOffer
   }
 }
 

src/adapters/localdb/models/counter-offer.js

@@ -0,0 +1,11 @@
+import mongoose from 'mongoose'
+
+const CounterOffer = new mongoose.Schema({
+  nostrEventId: { type: String, required: true }, // Nostr Event Id.
+  takerAddr: { type: String, default: null },
+  takerNpub: { type: String, default: null },
+  counterOfferAddr: { type: String, default: null },
+  counterOfferUtxo: { type: String, default: null }
+})
+
+export default mongoose.model('counterOffer', CounterOffer)

src/adapters/localdb/models/offer.js

@@ -18,7 +18,7 @@ const Offer = new mongoose.Schema({
   p2wdbHash: { type: String },
   offerStatus: { type: String },
   makerAddr: { type: String },
-  makerNpub: { type: String },
+  makerNpub: { type: String, default: null },
 
   // Authentication data
   signature: { type: String },

src/adapters/localdb/models/order.js

@@ -24,6 +24,7 @@ const Order = new mongoose.Schema({
   p2wdbTxid: { type: String },
   p2wdbHash: { type: String },
   makerAddr: { type: String, required: true },
+  makerNpub: { type: String, required: true },
 
   // Authentication data
   signature: { type: String },

src/adapters/nostr.js

@@ -7,6 +7,8 @@ import BchNostr from 'bch-nostr'
 import { RelayPool } from 'nostr'
 import RetryQueue from '@chris.troutner/retry-queue'
 import * as nip19 from 'nostr-tools/nip19'
+import { base58_to_binary as base58Tobinary } from 'base58-js'
+import { getPublicKey } from 'nostr-tools/pure'
 
 class NostrAdapter {
   constructor (localConfig = { nostrRelay: '', nostrTopic: '' }) {
@@ -44,6 +46,7 @@ class NostrAdapter {
     this.npub2pubkey = this.npub2pubkey.bind(this)
     this.readGlobalFeed = this.readGlobalFeed.bind(this)
     this.getFollowers = this.getFollowers.bind(this)
+    this.privKeyToNpub = this.privKeyToNpub.bind(this)
   }
 
   // Create nostr keys.
@@ -247,6 +250,31 @@ class NostrAdapter {
       throw error
     }
   }
+
+  // Convert a BCH private key (WIF) to a Nostr npub.
+  privKeyToNpub (privKey) {
+    try {
+      if (!privKey || typeof privKey !== 'string') {
+        throw new Error('privKey must be a string!')
+      }
+      // Extract the privaty key from the WIF, using this guide:
+      // https://learnmeabitcoin.com/technical/keys/private-key/wif/
+      const wifBuf = base58Tobinary(privKey)
+      const privBuf = wifBuf.slice(1, 33)
+      // console.log('privBuf: ', privBuf)
+
+      const nostrPubKey = getPublicKey(privBuf)
+      // console.log('nostrPubKey: ', nostrPubKey)
+      // Convert pubkey to npub
+      const nostrNpub = nip19.npubEncode(nostrPubKey)
+      // console.log('nostrNpub: ', nostrNpub)
+
+      return nostrNpub
+    } catch (error) {
+      console.log(`Error in nostr.js/privKeyToNpub() ${error.message} `)
+      throw error
+    }
+  }
 }
 
 export default NostrAdapter

src/controllers/rest-api/index.js

@@ -19,6 +19,7 @@ import OrderRouter from './order/index.js'
 import P2WDBRouter from './p2wdb/index.js'
 import UsageRESTController from './usage/index.js'
 import SmAccountRouter from './smAccount/index.js'
+import NostrRouter from './nostr/index.js'
 
 class RESTControllers {
   constructor (localConfig = {}) {
@@ -90,6 +91,10 @@ class RESTControllers {
 
     const smAccountRouter = new SmAccountRouter(dependencies)
     smAccountRouter.attach(app)
+
+    // Attach the REST API Controllers associated with the /nostr route
+    const nostrRouter = new NostrRouter(dependencies)
+    nostrRouter.attach(app)
   }
 }
 

src/controllers/rest-api/nostr/controller.js

@@ -0,0 +1,219 @@
+/*
+  REST API Controller library for the /nostr route
+*/
+import wlogger from '../../../adapters/wlogger.js'
+
+class NostrRESTControllerLib {
+  constructor (localConfig = {}) {
+    // Dependency Injection.
+    this.adapters = localConfig.adapters
+    if (!this.adapters) {
+      throw new Error(
+        'Instance of Adapters library required when instantiating /nostr REST Controller.'
+      )
+    }
+    this.useCases = localConfig.useCases
+    if (!this.useCases) {
+      throw new Error(
+        'Instance of Use Cases library required when instantiating /nostr REST Controller.'
+      )
+    }
+
+    this.createDeletedChat = this.createDeletedChat.bind(this)
+    this.getDeletedChats = this.getDeletedChats.bind(this)
+    this.createDeletedPost = this.createDeletedPost.bind(this)
+    this.getDeletedPosts = this.getDeletedPosts.bind(this)
+    this.handleError = this.handleError.bind(this)
+  }
+
+  /**
+   * @api {post} /nostr/deletedChat Create Deleted Chat.
+   * @apiPermission admin
+   * @apiName CreateDeletedChat
+   * @apiGroup REST Nostr
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -H "Authorization: Bearer <token>" -X POST -d '{"eventId": "note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q" , "npub" : "npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8" , "bchAddr" : "bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a", "pubkey":"6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1"}' localhost:5700/nostr/deletedChat
+   *
+   * @apiSuccess {String} _id DB Model id
+   * @apiSuccess {String} eventId Event id
+   * @apiSuccess {String} bchAddr BCH Address
+   * @apiSuccess {String} npub Nostr Npub
+   * @apiSuccess {String} pubkey Nostr pubkey
+   * @apiSuccess {Date} createdAt Created at date.
+   * @apiSuccess {Date} updatedAt Updated at date.
+   *
+   *
+   * @apiSuccessExample {json} Success-Response:
+   *     HTTP/1.1 200 OK
+   *     {
+   *       "_id": "6900f87f9cafee38028ea27e",
+   *       "npub": "npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8",
+   *       "bchAddr" : "bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a",
+   *       "pubKey": "6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1",
+   *       "createdAt":"2025-10-28T17:08:15.409Z",
+   *       "updatedAt": "2025-10-28T17:08:15.409Z"
+   *     }
+   *
+   * @apiUse TokenError
+   */
+  async createDeletedChat (ctx) {
+    try {
+      const chat = ctx.request.body
+
+      const result = await this.useCases.nostr.createDeletedChat(chat)
+
+      ctx.body = {
+        deletedChat: result
+      }
+    } catch (err) {
+      wlogger.error('Error in createDeletedChat() REST API handler.')
+      this.handleError(ctx, err)
+    }
+  }
+
+  /**
+   * @api {get} /nostr/deletedChat Get Deleted Chats.
+   * @apiPermission public
+   * @apiName GetDeletedChats
+   * @apiGroup REST Nostr
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -X GET localhost:5700/nostr/deletedChat
+   *
+   * @apiSuccess {String} _id DB Model id
+   * @apiSuccess {String} eventId Event id
+   * @apiSuccess {String} bchAddr BCH Address
+   * @apiSuccess {String} npub Nostr Npub
+   * @apiSuccess {String} pubkey Nostr pubkey
+   * @apiSuccess {Date} createdAt Created at date.
+   * @apiSuccess {Date} updatedAt Updated at date.
+   *
+   *
+   * @apiSuccessExample {json} Success-Response:
+   *     HTTP/1.1 200 OK
+   *     [{
+   *       "_id": "6900f87f9cafee38028ea27e",
+   *       "npub": "npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8",
+   *       "bchAddr" : "bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a",
+   *       "pubKey": "6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1",
+   *       "createdAt":"2025-10-28T17:08:15.409Z",
+   *       "updatedAt": "2025-10-28T17:08:15.409Z"
+   *     }]
+   *
+   * */
+  async getDeletedChats (ctx) {
+    try {
+      const deletedChats = await this.useCases.nostr.getDeletedChats()
+
+      ctx.body = { deletedChats }
+    } catch (err) {
+      wlogger.error('Error in getDeletedChats() REST API handler.')
+      this.handleError(ctx, err)
+    }
+  }
+
+  /**
+   * @api {post} /nostr/deletedPost Create Deleted Post.
+   * @apiPermission admin
+   * @apiName CreateDeletedPost
+   * @apiGroup REST Nostr
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -H "Authorization: Bearer <token>" -X POST -d '{"eventId": "note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q" , "npub" : "npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8" , "bchAddr" : "bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a", "pubkey":"6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1"}' localhost:5700/nostr/deletedPost
+   *
+   * @apiSuccess {String} _id DB Model id
+   * @apiSuccess {String} eventId Event id
+   * @apiSuccess {String} bchAddr BCH Address
+   * @apiSuccess {String} npub Nostr Npub
+   * @apiSuccess {String} pubkey Nostr pubkey
+   * @apiSuccess {Date} createdAt Created at date.
+   * @apiSuccess {Date} updatedAt Updated at date.
+   *
+   *
+   * @apiSuccessExample {json} Success-Response:
+   *     HTTP/1.1 200 OK
+   *     {
+   *       "_id": "6900f87f9cafee38028ea27e",
+   *       "npub": "npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8",
+   *       "bchAddr" : "bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a",
+   *       "pubKey": "6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1",
+   *       "createdAt":"2025-10-28T17:08:15.409Z",
+   *       "updatedAt": "2025-10-28T17:08:15.409Z"
+   *     }
+   *
+   * @apiUse TokenError
+   */
+  async createDeletedPost (ctx) {
+    try {
+      const post = ctx.request.body
+
+      const result = await this.useCases.nostr.createDeletedPost(post)
+
+      ctx.body = {
+        deletedPost: result
+      }
+    } catch (err) {
+      wlogger.error('Error in createDeletedPost() REST API handler.')
+      this.handleError(ctx, err)
+    }
+  }
+
+  /**
+   * @api {get} /nostr/deletedPost Get Deleted Posts.
+   * @apiPermission public
+   * @apiName GetDeletedPosts
+   * @apiGroup REST Nostr
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -X GET localhost:5700/nostr/deletedPost
+   *
+   * @apiSuccess {String} _id DB Model id
+   * @apiSuccess {String} eventId Event id
+   * @apiSuccess {String} bchAddr BCH Address
+   * @apiSuccess {String} npub Nostr Npub
+   * @apiSuccess {String} pubkey Nostr pubkey
+   * @apiSuccess {Date} createdAt Created at date.
+   * @apiSuccess {Date} updatedAt Updated at date.
+   *
+   *
+   * @apiSuccessExample {json} Success-Response:
+   *     HTTP/1.1 200 OK
+   *     [{
+   *       "_id": "6900f87f9cafee38028ea27e",
+   *       "npub": "npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8",
+   *       "bchAddr" : "bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a",
+   *       "pubKey": "6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1",
+   *       "createdAt":"2025-10-28T17:08:15.409Z",
+   *       "updatedAt": "2025-10-28T17:08:15.409Z"
+   *     }]
+   *
+   * */
+  async getDeletedPosts (ctx) {
+    try {
+      const deletedPosts = await this.useCases.nostr.getDeletedPosts()
+
+      ctx.body = { deletedPosts }
+    } catch (err) {
+      wlogger.error('Error in getDeletedPosts() REST API handler.')
+      this.handleError(ctx, err)
+    }
+  }
+
+  // DRY error handler
+  handleError (ctx, err) {
+    // If an HTTP status is specified by the buisiness logic, use that.
+    if (err.status) {
+      if (err.message) {
+        ctx.throw(err.status, err.message)
+      } else {
+        ctx.throw(err.status)
+      }
+    } else {
+      // By default use a 422 error if the HTTP status is not specified.
+      ctx.throw(422, err.message)
+    }
+  }
+}
+
+export default NostrRESTControllerLib

src/controllers/rest-api/nostr/index.js

@@ -0,0 +1,81 @@
+/*
+  REST API library for /nostr route.
+*/
+
+// Public npm libraries.
+import Router from 'koa-router'
+
+// Local libraries.
+import NostrRESTControllerLib from './controller.js'
+
+import Validators from '../middleware/validators.js'
+
+import config from '../../../../config/index.js'
+
+class NostrRouter {
+  constructor (localConfig = {}) {
+    // Dependency Injection.
+    this.adapters = localConfig.adapters
+    if (!this.adapters) {
+      throw new Error(
+        'Instance of Adapters library required when instantiating NostrRouter REST Controller.'
+      )
+    }
+    this.useCases = localConfig.useCases
+    if (!this.useCases) {
+      throw new Error(
+        'Instance of Use Cases library required when instantiating NostrRouter REST Controller.'
+      )
+    }
+
+    const dependencies = {
+      adapters: this.adapters,
+      useCases: this.useCases
+    }
+
+    // Encapsulate dependencies.
+    this.config = config
+    this.nostrRESTController = new NostrRESTControllerLib(dependencies)
+    this.validators = new Validators()
+
+    // Instantiate the router and set the base route.
+    const baseUrl = '/nostr'
+    this.router = new Router({ prefix: baseUrl })
+
+    this.attach = this.attach.bind(this)
+    this.createDeletedChat = this.createDeletedChat.bind(this)
+    this.createDeletedPost = this.createDeletedPost.bind(this)
+  }
+
+  attach (app) {
+    if (!app) {
+      throw new Error(
+        'Must pass app object when attaching REST API controllers.'
+      )
+    }
+
+    // Define the routes and attach the controller.
+    this.router.post('/deletedChat', this.createDeletedChat)
+    this.router.get('/deletedChat', this.nostrRESTController.getDeletedChats)
+    this.router.post('/deletedPost', this.createDeletedPost)
+    this.router.get('/deletedPost', this.nostrRESTController.getDeletedPosts)
+
+    // Attach the Controller routes to the Koa app.
+    app.use(this.router.routes())
+    app.use(this.router.allowedMethods())
+  }
+
+  async createDeletedChat (ctx, next) {
+    await this.validators.ensureAdmin(ctx, next)
+    await this.nostrRESTController.createDeletedChat(ctx, next)
+    return true
+  }
+
+  async createDeletedPost (ctx, next) {
+    await this.validators.ensureAdmin(ctx, next)
+    await this.nostrRESTController.createDeletedPost(ctx, next)
+    return true
+  }
+}
+
+export default NostrRouter

src/controllers/rest-api/offer/controller.js

@@ -35,6 +35,7 @@ class OfferRESTControllerLib {
     this.takeOffer = this.takeOffer.bind(this)
     this.listOffersByAddress = this.listOffersByAddress.bind(this)
     this.syncOfferMutableData = this.syncOfferMutableData.bind(this)
+    this.listCounterOffersByAddress = this.listCounterOffersByAddress.bind(this)
     this.handleError = this.handleError.bind(this)
   }
 
@@ -408,6 +409,52 @@ class OfferRESTControllerLib {
     }
   }
 
+  /**
+   * @api {get} /offer/list/counter-offer/:addr List all counter offers being made by a given address
+   * @apiPermission public
+   * @apiName listCounterOffersByAddress
+   * @apiGroup REST Offer
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -X GET localhost:5000/offer/list/counter-offer/bitcoincash:qq54a3xyyptty63ztlcavzzh64gy4d247qs4ueaupe
+   *
+   *
+
+   * @apiSuccess {String} offers.nostrEventId Nostr event id
+   * @apiSuccess {String} offers.takerNpub Nostr Npub.
+   * @apiSuccess {String} offers.takerAddr BCH Address.
+   * @apiSuccess {String} offers.counterOfferAddr BCH Address
+   * @apiSuccess {String} offers.counterOfferUtxo Utxo txid.
+   *
+   *
+   * @apiSuccessExample {json} Success-Response:
+   *     HTTP/1.1 200 OK
+   *     {
+   *       "counterOffers": [{
+   *          "_id": "56bd1da600a526986cf65c80",
+   *          "nostrEventId": "1234567890",
+   *          "takerAddr": "bitcoincash:qq54a3xyyptty63ztlcavzzh64gy4d247qs4ueaupe",
+   *          "takerNpub": "npub1nhc47z2tf42a4ps7plzcyax2j76gdausve763tqw3xuw7jjd7ceqppquly",
+   *          "counterOfferAddr": "bitcoincash:qzltx40ldxr53edchprppj5lpg4q7vl20usx25ga44",
+   *          "counterOfferUtxo": "71dab5b81cf06f3495aeebcc70fb351109e5e88bc85da67d0d144c0e5ca0bd6a",
+   *       }]
+   *     }
+   *
+   * @apiUse TokenError
+   */
+  async listCounterOffersByAddress (ctx) {
+    try {
+      const addr = ctx.params.addr
+
+      const counterOffers = await this.useCases.offer.listCounterOffersByAddress(addr)
+
+      ctx.body = { counterOffers }
+    } catch (err) {
+      console.log('Error in listCounterOffersByAddress REST API handler: ', err)
+      this.handleError(ctx, err)
+    }
+  }
+
   // DRY error handler
   handleError (ctx, err) {
     console.log('err', err.message)

src/controllers/rest-api/offer/index.js

@@ -60,6 +60,7 @@ class OfferRouter {
     this.router.get('/list/nft/:page', this.offerRESTController.listNftOffers)
     this.router.get('/list/fungible/:page', this.offerRESTController.listFungibleOffers)
     this.router.get('/list/addr/:addr', this.offerRESTController.listOffersByAddress)
+    this.router.get('/list/counter-offer/:addr', this.offerRESTController.listCounterOffersByAddress)
 
     // Attach the Controller routes to the Koa app.
     app.use(this.router.routes())

src/controllers/timer-controllers.js

@@ -28,6 +28,7 @@ class TimerControllers {
     this.backupUsageInterval = 60000 * 10 // 10 minutes
     this.newSmAccountsInterval = 60000 * 60 // 60 minutes
     this.updateSmAccountsInterval = 60000 * 10 // 10 minutes
+    this.removeOlderDeletedChatsAndPostsInterval = 60000 * 60 * 1 // 1 hour
 
     // Encapsulate dependencies
     this.config = config
@@ -42,7 +43,7 @@ class TimerControllers {
     this.backupUsage = this.backupUsage.bind(this)
     this.newSmAccounts = this.newSmAccounts.bind(this)
     this.updateSmAccounts = this.updateSmAccounts.bind(this)
-
+    this.removeOlderDeletedChatsAndPosts = this.removeOlderDeletedChatsAndPosts.bind(this)
     // State
     this.gcOrdersInt = null
     this.gcOffersInt = null
@@ -50,6 +51,7 @@ class TimerControllers {
     this.loadOffersInt = null
     this.newSmAccountsInt = null
     this.updateSmAccountsInt = null
+    this.removeOlderDeletedChatsAndPostsInt = null
   }
 
   // Start all the time-based controllers.
@@ -62,6 +64,7 @@ class TimerControllers {
     this.backupUsageHandle = setInterval(this.backupUsage, this.backupUsageInterval)
     this.newSmAccountsInt = setInterval(this.newSmAccounts, this.newSmAccountsInterval)
     this.updateSmAccountsInt = setInterval(this.updateSmAccounts, this.updateSmAccountsInterval)
+    this.removeOlderDeletedChatsAndPostsInt = setInterval(this.removeOlderDeletedChatsAndPosts, this.removeOlderDeletedChatsAndPostsInterval)
     return true
   }
 
@@ -74,6 +77,7 @@ class TimerControllers {
     clearInterval(this.backupUsageHandle)
     clearInterval(this.newSmAccountsInt)
     clearInterval(this.updateSmAccountsInt)
+    clearInterval(this.removeOlderDeletedChatsAndPostsInt)
   }
 
   // Garbage Collect the Orders.
@@ -194,6 +198,22 @@ class TimerControllers {
       return false
     }
   }
+
+  // Remove older deleted chats and posts.
+  async removeOlderDeletedChatsAndPosts () {
+    try {
+      // console.log('removeOlderDeletedChatsAndPosts() Timer Controller executing at ', new Date().toLocaleString())
+      clearInterval(this.removeOlderDeletedChatsAndPostsInt)
+      await this.useCases.nostr.removeOlderDeletedChats()
+      await this.useCases.nostr.removeOlderDeletedPosts()
+      this.removeOlderDeletedChatsAndPostsInt = setInterval(this.removeOlderDeletedChatsAndPosts, this.removeOlderDeletedChatsAndPostsInterval)
+      return true
+    } catch (err) {
+      console.error('Error in time-controller.js/removeOlderDeletedChatsAndPosts(): ', err)
+      this.removeOlderDeletedChatsAndPostsInt = setInterval(this.removeOlderDeletedChatsAndPosts, this.removeOlderDeletedChatsAndPostsInterval)
+      return false
+    }
+  }
 }
 
 export default TimerControllers

src/entities/counterOffer.js

@@ -0,0 +1,53 @@
+/*
+  Counter Offer Entity
+*/
+
+class CounterOfferEntity {
+  validate (offerData = {}) {
+    console.log('counter offer data input validation ', offerData)
+    // Throw an error if input object does not have a data property
+    if (!offerData.data) {
+      throw new Error(
+        'Input to counterOffer.validate() must be an object with a data property.'
+      )
+    }
+
+    const {
+      nostrEventId,
+      takerAddr,
+      takerNpub,
+      counterOfferAddr,
+      counterOfferUtxo
+    } = offerData.data
+
+    // Input Validation
+    if (!nostrEventId || typeof nostrEventId !== 'string') {
+      throw new Error("Property 'nostrEventId' must be a string.")
+    }
+    // Next validations are optional, to allow old counter offers without the data.
+    if (takerAddr && typeof takerAddr !== 'string') {
+      throw new Error("Property 'takerAddr' must be a string.")
+    }
+    if (takerNpub && typeof takerNpub !== 'string') {
+      throw new Error("Property 'takerNpub' must be a string.")
+    }
+    if (counterOfferAddr && typeof counterOfferAddr !== 'string') {
+      throw new Error("Property 'counterOfferAddr' must be a string.")
+    }
+    if (counterOfferUtxo && typeof counterOfferUtxo !== 'string') {
+      throw new Error("Property 'counterOfferUtxo' must be a string.")
+    }
+
+    const validatedCounterOfferData = {
+      nostrEventId,
+      takerAddr,
+      takerNpub,
+      counterOfferAddr,
+      counterOfferUtxo
+    }
+
+    return validatedCounterOfferData
+  }
+}
+
+export default CounterOfferEntity

src/entities/deletedChat.js

@@ -0,0 +1,17 @@
+/*
+  DeletedChat Entity
+*/
+
+class DeletedChat {
+  validate (data = {}) {
+    const { eventId } = data
+    // Input Validation
+    if (!eventId || typeof eventId !== 'string') {
+      throw new Error("Property 'eventId' must be a string!")
+    }
+
+    return data
+  }
+}
+
+export default DeletedChat

src/entities/deletedPost.js

@@ -0,0 +1,17 @@
+/*
+  DeletedPost Entity
+*/
+
+class DeletedPost {
+  validate (data = {}) {
+    const { eventId } = data
+    // Input Validation
+    if (!eventId || typeof eventId !== 'string') {
+      throw new Error("Property 'eventId' must be a string!")
+    }
+
+    return data
+  }
+}
+
+export default DeletedPost

src/entities/offer.js

@@ -31,6 +31,7 @@ class OfferEntity {
       utxoVout,
       offerStatus,
       makerAddr,
+      makerNpub,
       ticker,
       tokenType,
       nostrEventId,
@@ -89,6 +90,10 @@ class OfferEntity {
     if (!operatorPercentage || typeof operatorPercentage !== 'number') {
       throw new Error("Property 'operatorPercentage' must be a number.")
     }
+    // Validate npub type if it exist
+    if (makerNpub && typeof makerNpub !== 'string') {
+      throw new Error("Property 'makerNpub' must be a string.")
+    }
 
     // Convert the timestamp to a number.
     let timestamp = new Date(offerData.timestamp)
@@ -113,7 +118,8 @@ class OfferEntity {
       makerAddr,
       ticker,
       tokenType,
-      nostrEventId
+      nostrEventId,
+      makerNpub
     }
     // console.log('offer entity validatedOfferData: ', validatedOfferData)
 

src/use-cases/index.js

@@ -11,6 +11,7 @@ import OfferUseCases from './offer/index.js'
 import OrderUseCases from './order.js'
 import { UsageUseCases } from './usage-use-cases.js'
 import SmAccountUseCases from './smAccount-use-cases.js'
+import NostrUseCases from './nostr-use-cases.js'
 
 class UseCases {
   constructor (localConfig = {}) {
@@ -29,6 +30,7 @@ class UseCases {
     this.offer = new OfferUseCases(localConfig)
     this.usage = new UsageUseCases(localConfig)
     this.smAccount = new SmAccountUseCases(localConfig)
+    this.nostr = new NostrUseCases(localConfig)
   }
 
   // Run any startup Use Cases at the start of the app.

src/use-cases/nostr-use-cases.js

@@ -0,0 +1,130 @@
+/*
+  This library contains business-logic for dealing with deleted chats. Most of these
+  functions are called by the /nostr REST API endpoints.
+*/
+
+import wlogger from '../adapters/wlogger.js'
+import DeletedChatEntity from '../entities/deletedChat.js'
+import DeletedPostEntity from '../entities/deletedPost.js'
+
+class NostrUseCases {
+  constructor (localConfig = {}) {
+    this.adapters = localConfig.adapters
+    if (!this.adapters) {
+      throw new Error(
+        'Instance of adapters must be passed in when instantiating Nostr Use Cases library.'
+      )
+    }
+    // Encapsulate dependencies
+    this.DeletedChatEntity = new DeletedChatEntity()
+    this.DeletedPostEntity = new DeletedPostEntity()
+    this.DeletedChatModel = this.adapters.localdb.DeletedChat
+    this.DeletedPostModel = this.adapters.localdb.DeletedPost
+
+    this.createDeletedChat = this.createDeletedChat.bind(this)
+    this.getDeletedChats = this.getDeletedChats.bind(this)
+    this.createDeletedPost = this.createDeletedPost.bind(this)
+    this.getDeletedPosts = this.getDeletedPosts.bind(this)
+    this.removeOlderDeletedChats = this.removeOlderDeletedChats.bind(this)
+    this.removeOlderDeletedPosts = this.removeOlderDeletedPosts.bind(this)
+  }
+
+  // Create a new deleted chat model and add it to the Mongo database.
+  async createDeletedChat (deletedChatObj) {
+    try {
+      // Input Validation
+
+      const deletedChatEntity = this.DeletedChatEntity.validate(deletedChatObj)
+      const deletedChat = new this.DeletedChatModel(deletedChatEntity)
+
+      // Save the new model to the database.
+      await deletedChat.save()
+      return deletedChat
+    } catch (err) {
+      // console.log('createDeletedChat() error: ', err)
+      wlogger.error('Error in lib/nostr.js/createDeletedChat()')
+      throw err
+    }
+  }
+
+  // Returns an array of all deleted chats models in the Mongo database.
+  async getDeletedChats () {
+    try {
+      // Get deleted chats models.
+      const deletedChats = await this.DeletedChatModel.find({})
+
+      return deletedChats
+    } catch (err) {
+      wlogger.error('Error in lib/users.js/getAllDeletedChat()')
+      throw err
+    }
+  }
+
+  // Create a new deleted post model and add it to the Mongo database.
+  async createDeletedPost (deletedPostObj) {
+    try {
+      // Input Validation
+
+      const deletedPostEntity = this.DeletedPostEntity.validate(deletedPostObj)
+      const deletedPost = new this.DeletedPostModel(deletedPostEntity)
+
+      // Save the new model to the database.
+      await deletedPost.save()
+      return deletedPost
+    } catch (err) {
+      wlogger.error('Error in lib/users.js/createDeletedPost()')
+      throw err
+    }
+  }
+
+  // Returns an array of all deleted posts models in the Mongo database.
+  async getDeletedPosts () {
+    try {
+      // Get deleted posts models.
+      const deletedPosts = await this.DeletedPostModel.find({})
+
+      return deletedPosts
+    } catch (err) {
+      wlogger.error('Error in lib/users.js/getDeletedPosts()')
+      throw err
+    }
+  }
+
+  // Remove deleted chats that are older than 3 months.
+  async removeOlderDeletedChats () {
+    try {
+      const deletedChats = await this.DeletedChatModel.find({})
+      const threeMonthsAgo = new Date()
+      threeMonthsAgo.setMonth(threeMonthsAgo.getMonth() - 3)
+      for (let i = 0; i < deletedChats.length; i++) {
+        const deletedChat = deletedChats[i]
+        if (deletedChat.createdAt.getTime() < threeMonthsAgo.getTime()) {
+          await deletedChat.remove()
+        }
+      }
+    } catch (err) {
+      wlogger.error('Error in lib/users.js/removeOlderDeletedChats()')
+      throw err
+    }
+  }
+
+  // Remove deleted posts that are older than 3 months.
+  async removeOlderDeletedPosts () {
+    try {
+      const deletedPosts = await this.DeletedPostModel.find({})
+      const threeMonthsAgo = new Date()
+      threeMonthsAgo.setMonth(threeMonthsAgo.getMonth() - 3)
+      for (let i = 0; i < deletedPosts.length; i++) {
+        const deletedPost = deletedPosts[i]
+        if (deletedPost.createdAt.getTime() < threeMonthsAgo.getTime()) {
+          await deletedPost.remove()
+        }
+      }
+    } catch (err) {
+      wlogger.error('Error in lib/users.js/removeOlderDeletedPosts()')
+      throw err
+    }
+  }
+}
+
+export default NostrUseCases

src/use-cases/offer/index.js

@@ -19,6 +19,7 @@ import RetryQueue from '@chris.troutner/retry-queue'
 
 // Local libraries
 import OfferEntity from '../../entities/offer.js'
+import CounterOfferEntity from '../../entities/counterOffer.js'
 import config from '../../../config/index.js'
 
 const DEFAULT_ENTRIES_PER_PAGE = 20
@@ -45,7 +46,9 @@ class OfferUseCases {
     this.config = config
     this.axios = axios
     this.offerEntity = new OfferEntity()
+    this.counterOfferEntity = new CounterOfferEntity()
     this.OfferModel = this.adapters.localdb.Offer
+    this.CounterOfferModel = this.adapters.localdb.CounterOffer
     this.retryQueue = new RetryQueue({ retryPeriod: 1000, attempts: 3 })
 
     // Bind 'this' object to functions
@@ -66,6 +69,7 @@ class OfferUseCases {
     this.loadOffers = this.loadOffers.bind(this)
     this.listOffersByAddress = this.listOffersByAddress.bind(this)
     this.syncOfferMutableData = this.syncOfferMutableData.bind(this)
+    this.listCounterOffersByAddress = this.listCounterOffersByAddress.bind(this)
 
     // State
     this.seenOffers = []
@@ -595,10 +599,21 @@ class OfferUseCases {
   // and broadcasts the transaction to accept the Counter Offer.
   async acceptCounterOffer (offerData) {
     try {
+      console.log('offerData', offerData)
       // console.log(`acceptCounterOffer() offerData: ${JSON.stringify(offerData, null, 2)}`)
 
       // Quickly skip over offers that have already been processed.
       const eventId = offerData.data.nostrEventId
+
+      // Create counter offer entity for nostr event id if it not exist
+      const existingCounterOffer = await this.CounterOfferModel.findOne(({ nostrEventId: eventId }))
+      if (!existingCounterOffer) {
+        const counterOEntity = this.counterOfferEntity.validate(offerData)
+        // Create new counter offfer model and save it.
+        const counterOffer = new this.CounterOfferModel(counterOEntity)
+        await counterOffer.save()
+      }
+
       if (this.seenOffers.includes(eventId)) {
         // console.log(`Offer with event ID ${eventId} already processed. Skipping.`)
         return false
@@ -1020,6 +1035,20 @@ class OfferUseCases {
       throw err
     }
   }
+
+  async listCounterOffersByAddress (takerAddr) {
+    try {
+      if (!takerAddr || typeof takerAddr !== 'string') {
+        throw new Error('takerAddr must be a string')
+      }
+
+      const counterOffers = await this.CounterOfferModel.find({ takerAddr })
+      return counterOffers
+    } catch (err) {
+      console.error('Error in listCounterOffersByAddress(): ', err)
+      throw err
+    }
+  }
 }
 
 export default OfferUseCases

src/use-cases/order.js

@@ -116,6 +116,9 @@ class OrderLib {
       orderEntity.operatorAddress = this.config.operatorAddress
       orderEntity.operatorPercentage = this.config.operatorPercentage
 
+      // Convert the Seller's BCH private key to a Nostr npub. This is used to identify the seller in Nostr.
+      orderEntity.makerNpub = this.adapters.nostr.privKeyToNpub(userWallet.walletInfo.privateKey)
+
       // Post the new Order information to Nostr under the topic set in the
       // config file.
       const postObj = {

test/e2e/automated/a12-nostr.rest-e2e.js

@@ -0,0 +1,188 @@
+import testUtils from '../../utils/test-utils.js'
+import { assert } from 'chai'
+import config from '../../../config/index.js'
+import axios from 'axios'
+import sinon from 'sinon'
+import util from 'util'
+
+util.inspect.defaultOptions = { depth: 1 }
+
+const LOCALHOST = `http://localhost:${config.port}`
+
+const context = {}
+let sandbox
+
+// const mockContext = require('../../unit/mocks/ctx-mock').context
+
+if (!config.noMongo) {
+  describe('Nostr', () => {
+    before(async () => {
+      // console.log(`config: ${JSON.stringify(config, null, 2)}`)
+
+      // Create a second test user.
+      const userObj = {
+        email: 'test2@test.com',
+        password: 'pass2',
+        name: 'test2'
+      }
+      const testUser = await testUtils.createUser(userObj)
+      // console.log(`testUser2: ${JSON.stringify(testUser, null, 2)}`)
+
+      context.user2 = testUser.user
+      context.token2 = testUser.token
+      context.id2 = testUser.user._id
+
+      // Get the JWT used to log in as the admin 'system' user.
+      const adminJWT = await testUtils.getAdminJWT()
+      console.log(`adminJWT: ${adminJWT}`)
+      context.adminJWT = adminJWT
+
+      // const admin = await testUtils.loginAdminUser()
+      // context.adminJWT = admin.token
+
+      // const admin = await adminLib.loginAdmin()
+      // console.log(`admin: ${JSON.stringify(admin, null, 2)}`)
+    })
+
+    beforeEach(() => {
+      // const useCases = new UseCases({ adapters })
+      // uut = new UserController({ adapters, useCases })
+
+      sandbox = sinon.createSandbox()
+    })
+
+    afterEach(() => sandbox.restore())
+
+    describe('POST /nostr/deletedChat - Create Deleted Chat', () => {
+      it('should not create deleted chat if the authorization header is missing', async () => {
+        try {
+          const options = {
+            method: 'POST',
+            url: `${LOCALHOST}/nostr/deletedChat`
+          }
+          await axios(options)
+
+          assert.equal(true, false, 'Unexpected behavior')
+        } catch (err) {
+          assert.equal(err.response.status, 401)
+        }
+      })
+      it('should not create deleted chat if the authorization header is invalid scheme', async () => {
+        try {
+          const options = {
+            method: 'POST',
+            url: `${LOCALHOST}/nostr/deletedChat`,
+            headers: {
+              Authorization: 'Bearer invalid'
+            }
+          }
+
+          await axios(options)
+
+          assert.equal(true, false, 'Unexpected behavior')
+        } catch (err) {
+          assert.equal(err.response.status, 401)
+        }
+      })
+      it('should not create deleted chat if the authorization header is invalid token', async () => {
+        try {
+          const options = {
+            method: 'POST',
+            url: `${LOCALHOST}/nostr/deletedChat`,
+            headers: {
+              Authorization: `Bearer ${context.token}`
+            }
+          }
+
+          await axios(options)
+
+          assert.equal(true, false, 'Unexpected behavior')
+        } catch (err) {
+          assert.equal(err.response.status, 401)
+        }
+      })
+      it('should not create deleted chat if token is not admin', async () => {
+        try {
+          const options = {
+            method: 'POST',
+            url: `${LOCALHOST}/nostr/deletedChat`,
+            headers: {
+              Authorization: `Bearer ${context.token}`
+            }
+          }
+
+          await axios(options)
+
+          assert.equal(true, false, 'Unexpected behavior')
+        } catch (err) {
+          assert.equal(err.response.status, 401)
+        }
+      })
+    })
+
+    describe('POST /nostr/deletedPost - Create Deleted Post', () => {
+      it('should not create deleted post if the authorization header is missing', async () => {
+        try {
+          const options = {
+            method: 'POST',
+            url: `${LOCALHOST}/nostr/deletedPost`
+          }
+          await axios(options)
+
+          assert.equal(true, false, 'Unexpected behavior')
+        } catch (err) {
+          assert.equal(err.response.status, 401)
+        }
+      })
+
+      it('should not create deleted post if the authorization header is invalid scheme', async () => {
+        try {
+          const options = {
+            method: 'POST',
+            url: `${LOCALHOST}/nostr/deletedPost`,
+            headers: {
+              Authorization: 'Bearer invalid'
+            }
+          }
+          await axios(options)
+
+          assert.equal(true, false, 'Unexpected behavior')
+        } catch (err) {
+          assert.equal(err.response.status, 401)
+        }
+      })
+      it('should not create deleted post if the authorization header is invalid token', async () => {
+        try {
+          const options = {
+            method: 'POST',
+            url: `${LOCALHOST}/nostr/deletedPost`,
+            headers: {
+              Authorization: `Bearer ${context.token}`
+            }
+          }
+          await axios(options)
+
+          assert.equal(true, false, 'Unexpected behavior')
+        } catch (err) {
+          assert.equal(err.response.status, 401)
+        }
+      })
+      it('should not create deleted post if token is not admin', async () => {
+        try {
+          const options = {
+            method: 'POST',
+            url: `${LOCALHOST}/nostr/deletedPost`,
+            headers: {
+              Authorization: `Bearer ${context.token}`
+            }
+          }
+          await axios(options)
+
+          assert.equal(true, false, 'Unexpected behavior')
+        } catch (err) {
+          assert.equal(err.response.status, 401)
+        }
+      })
+    })
+  })
+}

test/unit/adapters/nostr.adapter.unit.js

@@ -224,4 +224,33 @@ describe('#nostr.js', () => {
       assert.isArray(result)
     })
   })
+  describe('#privKeyToNpub', () => {
+    it('should handle  error if providedprivKey is not a string', async () => {
+      try {
+        uut.privKeyToNpub()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        // console.log('err: ', err)
+        assert.include(err.message, 'privKey must be a string!')
+      }
+    })
+
+    it('should return npub if privKey is valid', async () => {
+      const result = uut.privKeyToNpub('L2kh34VinQNRq1ad8nnXnGoFrb9pT7j8GJXiT6Scsg18KMxsUVDr')
+      // console.log('result: ', result)
+      assert.isString(result)
+      assert.include(result, 'npub')
+    })
+    it('should handle unexpected error', async () => {
+      try {
+        uut.privKeyToNpub('invalid format')
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        // console.log('err: ', err)
+        assert.include(err.message, 'Invalid base58 character')
+      }
+    })
+  })
 })

test/unit/adapters/order-pagination.unit.js

@@ -52,6 +52,7 @@ describe('#OrderPagination', () => {
       nostrEventId: 'nostrEventId',
       dataType: 'dataType',
       makerAddr: 'makerAddr',
+      makerNpub: 'makerNpub',
       rateInBaseUnit: 'rateInBaseUnit',
       minUnitsToExchange: 'minUnitsToExchange',
       ticker: 'ticker',

test/unit/controllers/rest-api/nostr/nostr.rest.controller.unit.js

@@ -0,0 +1,201 @@
+/*
+  Unit tests for the REST API handler for the /nostr endpoints.
+*/
+
+// Public npm libraries
+import { assert } from 'chai'
+import sinon from 'sinon'
+
+// Local support libraries
+import adapters from '../../../mocks/adapters/index.js'
+import UseCasesMock from '../../../mocks/use-cases/index.js'
+import NostrController from '../../../../../src/controllers/rest-api/nostr/controller.js'
+
+import { context as mockContext } from '../../../../unit/mocks/ctx-mock.js'
+let uut
+let sandbox
+let ctx
+
+describe('#Nostr-REST-Controller', () => {
+  // const testUser = {}
+
+  beforeEach(() => {
+    const useCases = new UseCasesMock()
+    uut = new NostrController({ adapters, useCases })
+
+    sandbox = sinon.createSandbox()
+
+    // Mock the context object.
+    ctx = mockContext()
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#constructor', () => {
+    it('should throw an error if adapters are not passed in', () => {
+      try {
+        uut = new NostrController()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of Adapters library required when instantiating /nostr REST Controller.'
+        )
+      }
+    })
+
+    it('should throw an error if useCases are not passed in', () => {
+      try {
+        uut = new NostrController({ adapters })
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of Use Cases library required when instantiating /nostr REST Controller.'
+        )
+      }
+    })
+  })
+
+  describe('#POST /nostr/deletedChat', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        sandbox.stub(uut.useCases.nostr, 'createDeletedChat').rejects(new Error('test error'))
+        await uut.createDeletedChat(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        // console.log(err)
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      ctx.request.body = {
+        eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q',
+        npub: 'npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8',
+        bchAddr: 'bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a',
+        pubkey: '6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1'
+      }
+
+      await uut.createDeletedChat(ctx)
+
+      // Assert the expected HTTP response
+      assert.equal(ctx.status, 200)
+
+      assert.isObject(ctx.response.body)
+    })
+  })
+
+  describe('#GET /nostr/deletedChat', () => {
+    it('should return 422 status on arbitrary biz logic error', async () => {
+      try {
+        // Force an error
+        sandbox
+          .stub(uut.useCases.nostr, 'getDeletedChats')
+          .rejects(new Error('test error'))
+
+        await uut.getDeletedChats(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      await uut.getDeletedChats(ctx)
+
+      // Assert the expected HTTP response
+      assert.equal(ctx.status, 200)
+
+      // Assert that expected properties exist in the returned data.
+      assert.isObject(ctx.response.body)
+      assert.property(ctx.response.body, 'deletedChats')
+      assert.isArray(ctx.response.body.deletedChats)
+    })
+  })
+  describe('#POST /nostr/deletedPost', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        sandbox.stub(uut.useCases.nostr, 'createDeletedPost').rejects(new Error('test error'))
+        await uut.createDeletedPost(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+    it('should return 200 status on success', async () => {
+      ctx.request.body = {
+        eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q',
+        npub: 'npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8',
+        bchAddr: 'bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a',
+        pubkey: '6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1'
+      }
+
+      await uut.createDeletedPost(ctx)
+
+      assert.equal(ctx.status, 200)
+
+      assert.isObject(ctx.response.body)
+      assert.property(ctx.response.body, 'deletedPost')
+      assert.isObject(ctx.response.body.deletedPost)
+    })
+  })
+  describe('#GET /nostr/deletedPost', () => {
+    it('should return 422 status on biz logic error', async () => {
+      try {
+        sandbox.stub(uut.useCases.nostr, 'getDeletedPosts').rejects(new Error('test error'))
+        await uut.getDeletedPosts(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+    it('should return 200 status on success', async () => {
+      await uut.getDeletedPosts(ctx)
+
+      // Assert the expected HTTP response
+      assert.equal(ctx.status, 200)
+
+      assert.isObject(ctx.response.body)
+      assert.property(ctx.response.body, 'deletedPosts')
+      assert.isArray(ctx.response.body.deletedPosts)
+    })
+  })
+
+  describe('#handleError', () => {
+    it('should still throw error if there is no message', () => {
+      try {
+        const err = {
+          status: 404
+        }
+
+        uut.handleError(ctx, err)
+      } catch (err) {
+        assert.include(err.message, 'Not Found')
+      }
+    })
+
+    it('should throw error with message', () => {
+      try {
+        const err = {
+          status: 422,
+          message: 'test error'
+        }
+
+        uut.handleError(ctx, err)
+      } catch (err) {
+        assert.include(err.message, 'test error')
+      }
+    })
+  })
+})

test/unit/controllers/rest-api/nostr/nostr.rest.router.unit.js

@@ -0,0 +1,108 @@
+/*
+  Unit tests for the REST API handler for the /nostr endpoints.
+*/
+
+// Public npm libraries
+import { assert } from 'chai'
+
+import sinon from 'sinon'
+
+// Local support libraries
+import adapters from '../../../mocks/adapters/index.js'
+
+import UseCasesMock from '../../../mocks/use-cases/index.js'
+
+// const app = require('../../../mocks/app-mock')
+
+import NostrRouter from '../../../../../src/controllers/rest-api/nostr/index.js'
+
+let uut
+let sandbox
+// let ctx
+
+// const mockContext = require('../../../../unit/mocks/ctx-mock').context
+
+describe('#Nostr-REST-Router', () => {
+  // const testUser = {}
+
+  beforeEach(() => {
+    const useCases = new UseCasesMock()
+    uut = new NostrRouter({ adapters, useCases })
+
+    sandbox = sinon.createSandbox()
+
+    // Mock the context object.
+    // ctx = mockContext()
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#constructor', () => {
+    it('should throw an error if adapters are not passed in', () => {
+      try {
+        uut = new NostrRouter()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of Adapters library required when instantiating NostrRouter REST Controller.'
+        )
+      }
+    })
+
+    it('should throw an error if useCases are not passed in', () => {
+      try {
+        uut = new NostrRouter({ adapters })
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of Use Cases library required when instantiating NostrRouter REST Controller.'
+        )
+      }
+    })
+  })
+
+  describe('#attach', () => {
+    it('should throw an error if app is not passed in.', () => {
+      try {
+        uut.attach()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Must pass app object when attaching REST API controllers.'
+        )
+      }
+    })
+  })
+
+  describe('#createDeletedChat', () => {
+    it('should route to the createDeletedChat function', async () => {
+      // Stub functions
+      const validationSpy = sandbox.stub(uut.validators, 'ensureAdmin').resolves(true)
+      sandbox.stub(uut.nostrRESTController, 'createDeletedChat').resolves(true)
+
+      // Call function
+      const res = await uut.createDeletedChat()
+      assert.isTrue(validationSpy.calledOnce, 'Admin validator should be called')
+      assert.isTrue(res)
+    })
+  })
+
+  describe('#createDeletedPost', () => {
+    it('should route to the createDeletedPost function', async () => {
+      // Stub functions
+      const validationSpy = sandbox.stub(uut.validators, 'ensureAdmin').resolves(true)
+      sandbox.stub(uut.nostrRESTController, 'createDeletedPost').resolves(true)
+
+      // Call function
+      const res = await uut.createDeletedPost()
+      assert.isTrue(validationSpy.calledOnce, 'Admin validator should be called')
+      assert.isTrue(res)
+    })
+  })
+})

test/unit/controllers/rest-api/offer/offer.rest.controller.unit.js

@@ -251,6 +251,28 @@ describe('#Offer-REST-Router', () => {
     })
   })
 
+  describe('#listCounterOffersByAddress', () => {
+    it('should list counter offers by address', async () => {
+      ctx.params = { addr: 'testAddress' }
+      sandbox.stub(uut.useCases.offer, 'listCounterOffersByAddress').resolves([])
+      await uut.listCounterOffersByAddress(ctx)
+      assert.isArray(ctx.body.counterOffers)
+    })
+    it('should catch and throw an error', async () => {
+      try {
+        ctx.params = { addr: 'testAddress' }
+        sandbox
+          .stub(uut.useCases.offer, 'listCounterOffersByAddress')
+          .throws(new Error('test error'))
+
+        await uut.listCounterOffersByAddress(ctx)
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(err.message, 'test error')
+      }
+    })
+  })
+
   describe('#handleError', () => {
     it('should still throw error if there is no message', () => {
       try {

test/unit/controllers/timer-controllers.unit.js

@@ -187,4 +187,20 @@ describe('#Timer-Controllers', () => {
       assert.equal(result, false)
     })
   })
+  describe('#removeOlderDeletedChatsAndPosts', () => {
+    it('should kick off the Use Cases and return true', async () => {
+      sandbox.stub(uut.useCases.nostr, 'removeOlderDeletedChats').resolves()
+      sandbox.stub(uut.useCases.nostr, 'removeOlderDeletedPosts').resolves()
+      const result = await uut.removeOlderDeletedChatsAndPosts()
+
+      assert.equal(result, true)
+    })
+  })
+  it('should kick off the Use Cases and return false on error', async () => {
+    sandbox.stub(uut.useCases.nostr, 'removeOlderDeletedChats').throws(new Error('test error'))
+    sandbox.stub(uut.useCases.nostr, 'removeOlderDeletedPosts').throws(new Error('test error'))
+    const result = await uut.removeOlderDeletedChatsAndPosts()
+
+    assert.equal(result, false)
+  })
 })

test/unit/entities/counterOffer.entity.unit.js

@@ -0,0 +1,116 @@
+/*
+  Unit tests for the CounterOffer entity library.
+*/
+
+import { assert } from 'chai'
+import sinon from 'sinon'
+
+import CounterOfferEntity from '../../../src/entities/counterOffer.js'
+
+let sandbox
+let uut
+
+describe('#CounterOffer-Entity', () => {
+  before(async () => {})
+
+  beforeEach(() => {
+    uut = new CounterOfferEntity()
+
+    sandbox = sinon.createSandbox()
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#validate', () => {
+    it('should throw an error if data is not provided', () => {
+      try {
+        uut.validate({ })
+      } catch (err) {
+        assert.include(err.message, 'Input to counterOffer.validate() must be an object with a data property.')
+      }
+    })
+    it('should throw an error if nostrEventId is not provided', () => {
+      try {
+        uut.validate({ data: {} })
+      } catch (err) {
+        assert.include(err.message, "Property 'nostrEventId' must be a string")
+      }
+    })
+    it('should throw an error if provided takerAddr is not string', () => {
+      try {
+        const inObj = {
+          nostrEventId: 'nostr event id',
+          takerAddr: 1234
+        }
+        uut.validate({ data: inObj })
+      } catch (err) {
+        assert.include(err.message, "Property 'takerAddr' must be a string")
+      }
+    })
+    it('should throw an error if provided takerNpub is not string', () => {
+      try {
+        const inObj = {
+          nostrEventId: 'nostr event id',
+          takerAddr: 'taker address',
+          takerNpub: 1234
+        }
+        uut.validate({ data: inObj })
+      } catch (err) {
+        assert.include(err.message, "Property 'takerNpub' must be a string")
+      }
+    })
+    it('should throw an error if provided counterOfferAddr is not string', () => {
+      try {
+        const inObj = {
+          nostrEventId: 'nostr event id',
+          takerAddr: 'taker address',
+          takerNpub: 'npub',
+          counterOfferAddr: 1234
+        }
+        uut.validate({ data: inObj })
+      } catch (err) {
+        assert.include(err.message, "Property 'counterOfferAddr' must be a string")
+      }
+    })
+    it('should throw an error if provided counterOfferUtxo is not string', () => {
+      try {
+        const inObj = {
+          nostrEventId: 'nostr event id',
+          takerAddr: 'taker address',
+          takerNpub: 'npub',
+          counterOfferAddr: 'counter offer address',
+          counterOfferUtxo: 1234
+        }
+        uut.validate({ data: inObj })
+      } catch (err) {
+        assert.include(err.message, "Property 'counterOfferUtxo' must be a string")
+      }
+    })
+    it('should return a counter offer object', () => {
+      const inObj = {
+        nostrEventId: 'nostr event id',
+        takerAddr: 'taker address',
+        takerNpub: 'npub',
+        counterOfferAddr: 'counter offer address',
+        counterOfferUtxo: 'utxo txid'
+      }
+
+      const counterOfferEntity = uut.validate({ data: inObj })
+
+      assert.property(counterOfferEntity, 'nostrEventId')
+      assert.equal(counterOfferEntity.nostrEventId, inObj.nostrEventId)
+
+      assert.property(counterOfferEntity, 'takerAddr')
+      assert.equal(counterOfferEntity.takerAddr, inObj.takerAddr)
+
+      assert.property(counterOfferEntity, 'takerNpub')
+      assert.equal(counterOfferEntity.takerNpub, inObj.takerNpub)
+
+      assert.property(counterOfferEntity, 'counterOfferAddr')
+      assert.equal(counterOfferEntity.counterOfferAddr, inObj.counterOfferAddr)
+
+      assert.property(counterOfferEntity, 'counterOfferUtxo')
+      assert.equal(counterOfferEntity.counterOfferUtxo, inObj.counterOfferUtxo)
+    })
+  })
+})

test/unit/entities/deletedChat.entity.unit.js

@@ -0,0 +1,57 @@
+/*
+  Unit tests for the DeletedChat entity library.
+*/
+
+import { assert } from 'chai'
+import sinon from 'sinon'
+
+import DeletedChat from '../../../src/entities/deletedChat.js'
+
+let sandbox
+let uut
+
+describe('#DeletedChat-Entity', () => {
+  before(async () => {})
+
+  beforeEach(() => {
+    uut = new DeletedChat()
+
+    sandbox = sinon.createSandbox()
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#validate', () => {
+    it('should throw an error if eventId is not provided', () => {
+      try {
+        uut.validate()
+      } catch (err) {
+        assert.include(err.message, "Property 'eventId' must be a string!")
+      }
+    })
+
+    it('should return a DeletedChat object', () => {
+      const inputData = {
+        eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q',
+        npub: 'npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8',
+        bchAddr: 'bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a',
+        pubkey: '6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1'
+      }
+
+      const deletedChat = uut.validate(inputData)
+      // console.log('entry: ', entry)
+
+      assert.property(deletedChat, 'eventId')
+      assert.equal(deletedChat.eventId, inputData.eventId)
+
+      assert.property(deletedChat, 'npub')
+      assert.equal(deletedChat.npub, inputData.npub)
+
+      assert.property(deletedChat, 'bchAddr')
+      assert.equal(deletedChat.bchAddr, inputData.bchAddr)
+
+      assert.property(deletedChat, 'pubkey')
+      assert.equal(deletedChat.pubkey, inputData.pubkey)
+    })
+  })
+})

test/unit/entities/deletedPost.entity.unit.js

@@ -0,0 +1,57 @@
+/*
+  Unit tests for the DeletedPost entity library.
+*/
+
+import { assert } from 'chai'
+import sinon from 'sinon'
+
+import DeletedPost from '../../../src/entities/deletedPost.js'
+
+let sandbox
+let uut
+
+describe('#DeletedPost-Entity', () => {
+  before(async () => { })
+
+  beforeEach(() => {
+    uut = new DeletedPost()
+
+    sandbox = sinon.createSandbox()
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#validate', () => {
+    it('should throw an error if eventId is not provided', () => {
+      try {
+        uut.validate()
+      } catch (err) {
+        assert.include(err.message, "Property 'eventId' must be a string!")
+      }
+    })
+
+    it('should return a DeletedPost object', () => {
+      const inputData = {
+        eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q',
+        npub: 'npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8',
+        bchAddr: 'bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a',
+        pubkey: '6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1'
+      }
+
+      const deletedPost = uut.validate(inputData)
+      // console.log('entry: ', entry)
+
+      assert.property(deletedPost, 'eventId')
+      assert.equal(deletedPost.eventId, inputData.eventId)
+
+      assert.property(deletedPost, 'npub')
+      assert.equal(deletedPost.npub, inputData.npub)
+
+      assert.property(deletedPost, 'bchAddr')
+      assert.equal(deletedPost.bchAddr, inputData.bchAddr)
+
+      assert.property(deletedPost, 'pubkey')
+      assert.equal(deletedPost.pubkey, inputData.pubkey)
+    })
+  })
+})

test/unit/entities/offer.entity.unit.js

@@ -491,6 +491,36 @@ describe('#Offer-Entity', () => {
         assert.include(err.message, "Property 'operatorPercentage' must be a number.")
       }
     })
+    it('should throw an error if makerNpub is not a string', () => {
+      try {
+        const offerData = {
+          data: {
+            messageType: 1,
+            messageClass: 1,
+            tokenId: 'fakeId',
+            buyOrSell: 'buy',
+            rateInBaseUnit: 1000,
+            minUnitsToExchange: 350,
+            numTokens: 1,
+            utxoTxid: 'fakeTxid',
+            utxoVout: 0,
+            offerStatus: 'posted',
+            makerAddr: 'bitcoincash:qzl0d3gcqeypv4cy7gh8rgdszxa9vvm2acv7fqtd00',
+            tokenType: 1,
+            nostrEventId: 'test',
+            operatorAddress: 'bitcoincash:qzl0d3gcqeypv4cy7gh8rgdszxa9vvm2acv7fqtd00',
+            operatorPercentage: 10,
+            makerNpub: 1234
+          }
+        }
+        uut.validate(offerData)
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        // console.log(err)
+        assert.include(err.message, "Property 'makerNpub' must be a string.")
+      }
+    })
 
     it('should validate a new offer', () => {
       const offerObj = {
@@ -513,7 +543,8 @@ describe('#Offer-Entity', () => {
           tokenType: 1,
           nostrEventId: 'test',
           operatorAddress: 'bitcoincash:qzl0d3gcqeypv4cy7gh8rgdszxa9vvm2acv7fqtd00',
-          operatorPercentage: 10
+          operatorPercentage: 10,
+          makerNpub: 'npub1dtkf954h5k2yuv04xp44g5hnmk5k0ppv8mekxafm2gc0vveaxh6s0297qg'
         },
         timestamp: '2021-09-20T17:54:26.395Z',
         localTimeStamp: '9/20/2021, 10:54:26 AM',
@@ -539,6 +570,8 @@ describe('#Offer-Entity', () => {
       assert.property(result, 'txid')
       assert.property(result, 'p2wdbHash')
       assert.property(result, 'tokenType')
+      assert.property(result, 'makerAddr')
+      assert.property(result, 'makerNpub')
     })
   })
 })

test/unit/mocks/adapters/index.js

@@ -154,6 +154,17 @@ const localdb = {
       return {}
     }
   },
+  CounterOffer: class CounterOffer {
+    constructor (obj) {}
+
+    static findById () {}
+    static find () {}
+    static findOne () {}
+    static countDocuments(){}
+    async save () {
+      return {}
+    }
+  },
   SmAccount: class SmAccount {
     constructor (obj) {}
 
@@ -165,7 +176,31 @@ const localdb = {
     async save () {
       return {}
     }
-  }
+  },
+  DeletedChat: class DeletedChat {
+    constructor (obj) {}
+
+    static findById () {}
+    static find () {}
+    static findOne () {}
+    static updateOne () {}  
+
+    async save () {
+      return {}
+    }
+  },
+  DeletedPost: class DeletedPost {
+    constructor (obj) {}
+
+    static findById () {}
+    static find () {}
+    static findOne () {}
+    static updateOne () {}  
+
+    async save () {
+      return {}
+    }
+  } 
 }
 
 const bch = {
@@ -216,7 +251,8 @@ const nostr = {
   read: async () => { return true },
   eventId2note: () => { return 'testNoteId' },
   readGlobalFeed: async () => { return [] },
-  getFollowers: async () => { return [] }
+  getFollowers: async () => { return [] },
+  privKeyToNpub: async () => { return 'fakeNpub' }
 }
 
 export default { ipfs, localdb, bch, wallet, p2wdb, bchjs, nostr}

test/unit/mocks/use-cases/index.js

@@ -74,6 +74,9 @@ class Offer {
   async syncOfferMutableData(){
     return {}
   }
+  async listCounterOffersByAddress() {
+    return []
+  }
 }
 
 class Order {
@@ -135,6 +138,27 @@ class SmAccountUseCaseMock {
   }
 }
 
+class NostrUseCasesMock {
+  async createDeletedChat() {
+    return {}
+  }
+  async getDeletedChats() {
+    return []
+  }
+  async createDeletedPost() {
+    return {}
+  }
+  async getDeletedPosts() {
+    return []
+  }
+  async removeOlderDeletedChats() {
+    return true
+  }
+  async removeOlderDeletedPosts() {
+    return true
+  }
+}
+
 class UseCasesMock {
   constuctor(localConfig = {}) {
     // this.user = new UserUseCaseMock(localConfig)
@@ -146,6 +170,7 @@ class UseCasesMock {
   order = new Order()
   usage = new UsageUseCaseMock()
   smAccount = new SmAccountUseCaseMock()
+  nostr = new NostrUseCasesMock()
 }
 
 export default UseCasesMock;

test/unit/use-cases/nostr.use-case.unit.js

@@ -0,0 +1,287 @@
+/*
+  Unit tests for the Nostr Use Case library.
+*/
+
+// Public npm libraries
+import { assert } from 'chai'
+import sinon from 'sinon'
+
+// Unit under test (uut)
+import NostrUseCases from '../../../src/use-cases/nostr-use-cases.js'
+// Local support libraries
+import adapters from '../mocks/adapters/index.js'
+
+describe('#nostr-use-cases', () => {
+  let uut
+  let sandbox
+
+  before(async () => {
+    // Delete all previous users in the database.
+    // await testUtils.deleteAllUsers()
+  })
+
+  beforeEach(() => {
+    sandbox = sinon.createSandbox()
+
+    uut = new NostrUseCases({ adapters })
+  })
+
+  afterEach(() => sandbox.restore())
+
+  describe('#constructor', () => {
+    it('should throw an error if adapters are not passed in', () => {
+      try {
+        uut = new NostrUseCases()
+
+        assert.fail('Unexpected code path')
+        console.log(uut) // linter
+      } catch (err) {
+        assert.include(
+          err.message,
+          'Instance of adapters must be passed in when instantiating Nostr Use Cases library.'
+        )
+      }
+    })
+  })
+
+  describe('#createDeletedChat', () => {
+    it('should throw an error if no input is given', async () => {
+      try {
+        await uut.createDeletedChat()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        // console.log(err)
+        // assert.equal(err.status, 422)
+        assert.include(err.message, "Property 'eventId' must be a string!")
+      }
+    })
+
+    it('should throw an error if eventId is not provided', async () => {
+      try {
+        await uut.createDeletedChat({})
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(err.message, "Property 'eventId' must be a string!")
+      }
+    })
+
+    it('should catch and throw DB errors', async () => {
+      try {
+        // Force an error with the database.
+        sandbox.stub(uut, 'DeletedChatModel').throws(new Error('test error'))
+
+        const inObj = {
+          eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q'
+        }
+
+        await uut.createDeletedChat(inObj)
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should create a new deleted chat model with minimum inputs', async () => {
+      const inObj = {
+        eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q'
+      }
+
+      const res = await uut.createDeletedChat(inObj)
+
+      assert.isObject(res)
+    })
+    it('should create a new deleted chat model with maximum inputs', async () => {
+      const inObj = {
+        eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q',
+        npub: 'npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8',
+        bchAddr: 'bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a',
+        pubkey: '6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1'
+      }
+
+      const res = await uut.createDeletedChat(inObj)
+
+      assert.isObject(res)
+    })
+  })
+
+  describe('#getDeletedChats', () => {
+    it('should return all deleted chats from the database', async () => {
+      sandbox.stub(uut.DeletedChatModel, 'find').resolves([])
+      const res = await uut.getDeletedChats()
+
+      assert.isArray(res)
+    })
+
+    it('should catch and throw an error', async () => {
+      try {
+        // Force an error.
+        sandbox.stub(uut.DeletedChatModel, 'find').rejects(new Error('test error'))
+
+        await uut.getDeletedChats()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(err.message, 'test error')
+      }
+    })
+  })
+
+  describe('#createDeletedPost', () => {
+    it('should throw an error if no input is given', async () => {
+      try {
+        await uut.createDeletedPost()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(err.message, "Property 'eventId' must be a string!")
+      }
+    })
+
+    it('should throw an error if eventId is not provided', async () => {
+      try {
+        await uut.createDeletedPost({})
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(err.message, "Property 'eventId' must be a string!")
+      }
+    })
+
+    it('should catch and throw DB errors', async () => {
+      try {
+        // Force an error with the database.
+        sandbox.stub(uut, 'DeletedPostModel').throws(new Error('test error'))
+
+        const inObj = {
+          eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q'
+        }
+
+        await uut.createDeletedPost(inObj)
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(err.message, 'test error')
+      }
+    })
+    it('should create a new deleted post model with minimum inputs', async () => {
+      const inObj = {
+        eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q'
+      }
+
+      const res = await uut.createDeletedPost(inObj)
+
+      assert.isObject(res)
+    })
+    it('should create a new deleted post model with maximum inputs', async () => {
+      const inObj = {
+        eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q',
+        npub: 'npub1d4ed5x49d7p24xn63flj4985dc4gpfngdhtqcxpth0ywhm6czxcscfpcq8',
+        bchAddr: 'bitcoincash:qpm2qsznhks23z7629mms6s4cwef74vcwvy22gdx6a',
+        pubkey: '6d72da1aa56f82aa9a7a8a7f2a94f46e2a80a6686dd60c182bbbc8ebef5811b1'
+      }
+
+      const res = await uut.createDeletedPost(inObj)
+
+      assert.isObject(res)
+    })
+  })
+
+  describe('#getDeletedPosts', () => {
+    it('should return all deleted posts from the database', async () => {
+      sandbox.stub(uut.DeletedPostModel, 'find').resolves([])
+      const res = await uut.getDeletedPosts()
+
+      assert.isArray(res)
+    })
+  })
+
+  it('should catch and throw an error', async () => {
+    try {
+      // Force an error.
+      sandbox.stub(uut.DeletedPostModel, 'find').rejects(new Error('test error'))
+
+      await uut.getDeletedPosts()
+
+      assert.fail('Unexpected code path')
+    } catch (err) {
+      assert.include(err.message, 'test error')
+    }
+  })
+  describe('#removeOlderDeletedChats', () => {
+    it('should remove older deleted chats from the database', async () => {
+      const threeMonthsAgo = new Date()
+      threeMonthsAgo.setMonth(threeMonthsAgo.getMonth() - 3) // 3 months ago
+      threeMonthsAgo.setDate(threeMonthsAgo.getDate() - 1) // 1 day ago
+      const spy = sinon.spy()
+      const deletedChatsMock = [
+        // Newer deleted chat
+        {
+          eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q',
+          createdAt: new Date(),
+          remove: spy
+        },
+        // Older deleted chat
+        {
+          eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q',
+          createdAt: threeMonthsAgo,
+          remove: spy
+        }
+      ]
+      sandbox.stub(uut.DeletedChatModel, 'find').resolves(deletedChatsMock)
+      await uut.removeOlderDeletedChats()
+      assert.equal(spy.callCount, 1, 'Expected to be called once.')
+    })
+    it('should handle error', async () => {
+      try {
+        // Force an error.
+        sandbox.stub(uut.DeletedChatModel, 'find').throws(new Error('test error'))
+
+        await uut.removeOlderDeletedChats()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(err.message, 'test error')
+      }
+    })
+  })
+  describe('#removeOlderDeletedPosts', () => {
+    it('should remove older deleted posts from the database', async () => {
+      const threeMonthsAgo = new Date()
+      threeMonthsAgo.setMonth(threeMonthsAgo.getMonth() - 3) // 3 months ago
+      threeMonthsAgo.setDate(threeMonthsAgo.getDate() - 1) // 1 day ago
+      const spy = sinon.spy()
+      const deletedPostsMock = [
+        // Newer deleted post
+        {
+          eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q',
+          createdAt: new Date(),
+          remove: spy
+        },
+        // Older deleted post
+        {
+          eventId: 'note19e93faw4ffqepsqsrwrnstd3ee00nmzakwwuyfjm43dankgummfqms4p6q',
+          createdAt: threeMonthsAgo,
+          remove: spy
+        }
+      ]
+      sandbox.stub(uut.DeletedPostModel, 'find').resolves(deletedPostsMock)
+      await uut.removeOlderDeletedPosts()
+      assert.equal(spy.callCount, 1, 'Expected to be called once.')
+    })
+    it('should handle error', async () => {
+      try {
+        // Force an error.
+        sandbox.stub(uut.DeletedPostModel, 'find').throws(new Error('test error'))
+
+        await uut.removeOlderDeletedPosts()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        assert.include(err.message, 'test error')
+      }
+    })
+  })
+})

test/unit/use-cases/offer.use-case.unit.js

@@ -835,6 +835,25 @@ describe('#offer-use-case', () => {
   })
 
   describe('#acceptCounterOffer', () => {
+    it('should capture counter offer if does not exist', async () => {
+      const offerObj = mockData.offerMockData
+      sandbox.stub(uut.CounterOfferModel, 'findOne').resolves(null)
+      const spy = sandbox.stub(uut.CounterOfferModel.prototype, 'save')
+      // Mock dependencies
+
+      await uut.acceptCounterOffer(offerObj)
+      assert.isTrue(spy.calledOnce)
+    })
+    it('should not save counter offer if already exist', async () => {
+      const offerObj = mockData.offerMockData
+      sandbox.stub(uut.CounterOfferModel, 'findOne').resolves(offerObj.data)
+      const spy = sandbox.stub(uut.CounterOfferModel.prototype, 'save')
+      // Mock dependencies
+
+      await uut.acceptCounterOffer(offerObj)
+      assert.isFalse(spy.calledOnce)
+    })
+
     it('should return false if order already processed', async () => {
       const offerObj = mockData.offerMockData
       uut.seenOffers.push(offerObj.data.nostrEventId)
@@ -846,14 +865,18 @@ describe('#offer-use-case', () => {
 
     it('should return if order is not found!', async () => {
       // Mock dependencies
+      const offerObj = mockData.offerMockData
+
       sandbox.stub(uut.orderUseCase, 'findOrderByUtxo').throws(new Error('test error'))
 
-      const result = await uut.acceptCounterOffer({ data: { /** .... */ } })
+      const result = await uut.acceptCounterOffer(offerObj)
       assert.equal(result, 'N/A')
     })
 
     it('should return N/A on axios error', async () => {
       // Mock dependencies
+      const offerObj = mockData.offerMockData
+
       const mock = Object.assign({}, mockData.offerMockData.data)
       sandbox.stub(uut.orderUseCase, 'findOrderByUtxo').resolves(mock)
       // sandbox.stub(uut.adapters.wallet.bchWallet, 'utxoIsValid').throws(new Error('test error'))
@@ -861,32 +884,38 @@ describe('#offer-use-case', () => {
       axiosErr.isAxiosError = true
       sandbox.stub(uut.retryQueue, 'addToQueue').throws(axiosErr)
 
-      const result = await uut.acceptCounterOffer({ data: { /** .... */ } })
+      const result = await uut.acceptCounterOffer(offerObj)
       assert.equal(result, 'N/A')
     })
     it('should return if utxo can not be validated', async () => {
       // Mock dependencies
+      const offerObj = mockData.offerMockData
+
       const mock = Object.assign({}, mockData.offerMockData.data)
       sandbox.stub(uut.orderUseCase, 'findOrderByUtxo').resolves(mock)
       // sandbox.stub(uut.adapters.wallet.bchWallet, 'utxoIsValid').throws(new Error('test error'))
       sandbox.stub(uut.retryQueue, 'addToQueue').throws(new Error('test error'))
 
-      const result = await uut.acceptCounterOffer({ data: { /** .... */ } })
+      const result = await uut.acceptCounterOffer(offerObj)
       assert.equal(result, 'N/A')
     })
 
     it('should return if utxo is invalid', async () => {
       // Mock dependencies
+      const offerObj = mockData.offerMockData
+
       const mock = Object.assign({}, mockData.offerMockData.data)
       sandbox.stub(uut.orderUseCase, 'findOrderByUtxo').resolves(mock)
       sandbox.stub(uut.adapters.wallet.bchWallet, 'utxoIsValid').resolves(false)
 
-      const result = await uut.acceptCounterOffer({ data: { /** .... */ } })
+      const result = await uut.acceptCounterOffer(offerObj)
       assert.equal(result, 'N/A')
     })
 
     it('should handle error if counter offer cant be calculated', async () => {
       try {
+        const offerObj = mockData.offerMockData
+
         // Mock Data
         const mock = Object.assign({}, mockData.offerMockData.data)
         mock.rateInBaseUnit = null
@@ -895,8 +924,7 @@ describe('#offer-use-case', () => {
         sandbox.stub(uut.orderUseCase, 'findOrderByEvent').resolves(mock)
         sandbox.stub(uut.orderUseCase, 'findOrderByUtxo').resolves(mock)
 
-        const result = await uut.acceptCounterOffer({ data: {} })
-        console.log('result: ', result)
+        await uut.acceptCounterOffer(offerObj)
         assert.fail('unexpected code path')
       } catch (err) {
         assert.include(err.message, 'Could not calculate the amount of BCH offered in the Counter Offer')
@@ -906,6 +934,7 @@ describe('#offer-use-case', () => {
     it('should handle error for wrong transaction output', async () => {
       try {
         // Mock Data
+
         const mock = Object.assign({}, mockData.offerMockData.data)
 
         // Mock dependencies
@@ -923,6 +952,7 @@ describe('#offer-use-case', () => {
 
     it('should skip transactions that do not have an output for the operator', async () => {
       // Mock data
+
       const mock = Object.assign({}, mockData.offerMockData.data)
       mock.makerAddr = 'bitcoincash:qzy97glp47ut7tstm5g0tlrmkhk742795gkmyc7477' // Unknow Adress
       mock.rateInBaseUnit = 0
@@ -934,7 +964,7 @@ describe('#offer-use-case', () => {
 
       sandbox.stub(uut.adapters.wallet, 'deseralizeTx').resolves(mockData.deserealizeTxMockNoOperatorOut)
 
-      const result = await uut.acceptCounterOffer({ data: { /** .... */ } })
+      const result = await uut.acceptCounterOffer({ data: mock })
       assert.equal(result, 'N/A')
     })
     it('should skip transactions if operator address does not match', async () => {
@@ -952,7 +982,7 @@ describe('#offer-use-case', () => {
 
         sandbox.stub(uut.adapters.wallet, 'deseralizeTx').resolves(mockData.deserealizeTxMock)
 
-        await uut.acceptCounterOffer({ data: {} })
+        await uut.acceptCounterOffer({ data: mock })
         assert.fail('unexpected code path')
       } catch (error) {
         assert.include(error.message, 'The Counter Offer has an output address of')
@@ -974,7 +1004,7 @@ describe('#offer-use-case', () => {
 
         sandbox.stub(uut.adapters.wallet, 'deseralizeTx').resolves(mockData.deserealizeTxMock)
 
-        await uut.acceptCounterOffer({ data: {} })
+        await uut.acceptCounterOffer({ data: mock })
         assert.fail('unexpected code path')
       } catch (err) {
         assert.include(err.message, 'The Counter Offer has an output address of')
@@ -997,7 +1027,7 @@ describe('#offer-use-case', () => {
 
       sandbox.stub(uut.adapters.wallet, 'deseralizeTx').resolves(mockData.deserealizeTxMock)
 
-      const result = await uut.acceptCounterOffer({ data: {} })
+      const result = await uut.acceptCounterOffer({ data: mock })
       assert.equal(result, 'N/A')
     })
 
@@ -1017,7 +1047,7 @@ describe('#offer-use-case', () => {
       sandbox.stub(uut.adapters.wallet, 'deseralizeTx').resolves(mockData.deserealizeTxMock)
 
       //
-      const result = await uut.acceptCounterOffer({ data: {} })
+      const result = await uut.acceptCounterOffer({ data: mock })
       assert.isString(result)
       assert.notEqual('N/A')
     })
@@ -1130,4 +1160,23 @@ describe('#offer-use-case', () => {
       assert.isNumber(offer.lastUpdatedTokenData)
     })
   })
+  describe('#listCounterOffersByAddress', () => {
+    it('should throw an error if takerAddr is not provided!', async () => {
+      try {
+        await uut.listCounterOffersByAddress()
+
+        assert.fail('unexpected code path')
+      } catch (err) {
+        assert.include(err.message, 'takerAddr must be a string')
+      }
+    })
+
+    it('should return counter offers by address', async () => {
+      // Mock dependencies
+      sandbox.stub(uut.CounterOfferModel, 'find').resolves([])
+
+      const result = await uut.listCounterOffersByAddress('bitcoincash:qzltx40ldxr53edchprppj5lpg4q7vl20usx25ga44')
+      assert.isArray(result)
+    })
+  })
 })