From b804a2450417af9191c9ebb5df3c0ba327aa5f71 Mon Sep 17 00:00:00 2001
From: Daniel Gonzalez <danielhumgon@gmail.com>
Date: Thu, 29 Jul 2021 19:51:45 -0400
Subject: [PATCH] feat(entry): Created 'Entry' Entity, Use Case, and Adapter

---
 src/adapters/localdb/index.js        |  3 +-
 src/adapters/localdb/models/entry.js | 13 ++++
 src/entities/entry.js                | 41 ++++++++++++
 src/use-cases/entry.js               | 97 ++++++++++++++++++++++++++++
 src/use-cases/index.js               |  2 +
 5 files changed, 155 insertions(+), 1 deletion(-)
 create mode 100644 src/adapters/localdb/models/entry.js
 create mode 100644 src/entities/entry.js
 create mode 100644 src/use-cases/entry.js

diff --git a/src/adapters/localdb/index.js b/src/adapters/localdb/index.js
index 1589241..528e9cf 100644
--- a/src/adapters/localdb/index.js
+++ b/src/adapters/localdb/index.js
@@ -4,11 +4,12 @@
 
 // Load Mongoose models.
 const Users = require('./models/users')
-
+const Entry = require('./models/entry')
 class LocalDB {
   constructor () {
     // Encapsulate dependencies
     this.Users = Users
+    this.Entry = Entries
   }
 }
 
diff --git a/src/adapters/localdb/models/entry.js b/src/adapters/localdb/models/entry.js
new file mode 100644
index 0000000..0db1355
--- /dev/null
+++ b/src/adapters/localdb/models/entry.js
@@ -0,0 +1,13 @@
+const mongoose = require('mongoose')
+
+const Entry = new mongoose.Schema({
+  entry: { type: String },
+  description: { type: String },
+  slpAddress: { type: String },
+  signature: { type: String },
+  category: { type: String },
+  balance: { type: Number },
+  merit: { type: Number }
+})
+
+module.exports = mongoose.model('entry', Entry)
diff --git a/src/entities/entry.js b/src/entities/entry.js
new file mode 100644
index 0000000..c94cb26
--- /dev/null
+++ b/src/entities/entry.js
@@ -0,0 +1,41 @@
+/*
+  Entry Entity
+*/
+class Entry {
+  validate ({
+    entry,
+    description,
+    slpAddress,
+    signature,
+    category
+  } = {}) {
+    // Input Validation
+    if (!entry || typeof entry !== 'string') {
+      throw new Error("Property 'entry' must be a string!")
+    }
+    if (!description || typeof description !== 'string') {
+      throw new Error("Property 'description' must be a string!")
+    }
+    if (!slpAddress || typeof slpAddress !== 'string') {
+      throw new Error("Property 'slpAddress' must be a string!")
+    }
+    if (!signature || typeof signature !== 'string') {
+      throw new Error("Property 'signature' must be a string!")
+    }
+    if (!category || typeof category !== 'string') {
+      throw new Error("Property 'category' must be a string!")
+    }
+
+    const entryData = {
+      entry,
+      description,
+      slpAddress,
+      signature,
+      category
+    }
+
+    return entryData
+  }
+}
+
+module.exports = Entry
diff --git a/src/use-cases/entry.js b/src/use-cases/entry.js
new file mode 100644
index 0000000..911bff6
--- /dev/null
+++ b/src/use-cases/entry.js
@@ -0,0 +1,97 @@
+const { wlogger } = require('../adapters/wlogger')
+
+class EntryLib {
+  constructor (localConfig = {}) {
+    // console.log('User localConfig: ', localConfig)
+    this.adapters = localConfig.adapters
+    if (!this.adapters) {
+      throw new Error(
+        'Instance of adapters must be passed in when instantiating User Use Cases library.'
+      )
+    }
+
+    // Encapsulate dependencies
+    this.EntryModel = this.adapters.localdb.Entries
+  }
+
+  // Create a new entry model and add it to the Mongo database.
+  async createEntry (entryObj) {
+    try {
+      const {
+        entry,
+        description,
+        slpAddress,
+        signature,
+        category
+      } = entryObj
+
+      // Input Validation
+      if (!entry || typeof entry !== 'string') {
+        throw new Error("Property 'entry' must be a string!")
+      }
+      if (!description || typeof description !== 'string') {
+        throw new Error("Property 'description' must be a string!")
+      }
+      if (!slpAddress || typeof slpAddress !== 'string') {
+        throw new Error("Property 'slpAddress' must be a string!")
+      }
+      if (!signature || typeof signature !== 'string') {
+        throw new Error("Property 'signature' must be a string!")
+      }
+      if (!category || typeof category !== 'string') {
+        throw new Error("Property 'category' must be a string!")
+      }
+
+      let psfBalance
+
+      try {
+        // Verify that the entry was signed by a specific BCH address.
+        const isValidSignature = _this.bchjs._verifySignature(body)
+        if (!isValidSignature) {
+          throw new Error('Invalid signature')
+        }
+
+        // Verify psf tokens balance
+        if (_this.env === 'test') {
+          psfBalance = 100
+        } else {
+          psfBalance = 100// await _this.bchjs.getPSFTokenBalance(slpAddress)
+        }
+
+        if (psfBalance < 10) {
+          throw new Error('Insufficient psf balance')
+        }
+      } catch (err) {
+        ctx.throw(406, err.message)
+      }
+      let merit
+      if (_this.env === 'test') {
+        merit = 100
+      } else {
+        merit = 100// await _this.bchjs.getMerit(slpAddress)
+      }
+
+      const updatedEntry = {
+        entry: entry.trim(),
+        slpAddress: slpAddress.trim(),
+        description: description.trim(),
+        signature: signature.trim(),
+        category: category.trim(),
+        balance: psfBalance,
+        merit
+      }
+
+      const entryModel = new this.EntryModel(updatedEntry)
+
+      await entryModel.save()
+
+      return { id: entry._id.toString() }
+    } catch (err) {
+      // console.log('createUser() error: ', err)
+      wlogger.error('Error in use-cases/entry.js/createEntry()')
+      throw err
+    }
+  }
+}
+
+module.exports = EntryLib
diff --git a/src/use-cases/index.js b/src/use-cases/index.js
index 015368f..4d7f980 100644
--- a/src/use-cases/index.js
+++ b/src/use-cases/index.js
@@ -5,6 +5,7 @@
 */
 
 const UserUseCases = require('./user')
+const EntryUseCases = require('./entry')
 
 class UseCases {
   constructor (localConfig = {}) {
@@ -17,6 +18,7 @@ class UseCases {
 
     // console.log('use-cases/index.js localConfig: ', localConfig)
     this.user = new UserUseCases(localConfig)
+    this.entry = new EntryUseCases(localConfig)
   }
 }