feat(REST): Added REST API endpoint to bch-api for the psf-slp-indexer

src/app.js

@@ -55,6 +55,7 @@ const EncryptionV5 = require('./routes/v5/encryption')
 const PriceV5 = require('./routes/v5/price')
 const JWTV5 = require('./routes/v5/jwt')
 const BcashSLP = require('./routes/v5/bcash/slp')
+const PsfSlpIndexer = require('./routes/v5/psf-slp-indexer')
 // const Ninsight = require('./routes/v5/ninsight')
 
 require('dotenv').config()
@@ -84,6 +85,7 @@ const utilV5 = new UtilV5({ electrumx: electrumxv5 })
 const dsproofV5 = new DSProofV5()
 const jwtV5 = new JWTV5()
 const bcashSLP = new BcashSLP()
+const psfSlpIndexer = new PsfSlpIndexer()
 const app = express()
 
 app.locals.env = process.env
@@ -200,6 +202,8 @@ app.use(`/${v5prefix}/` + 'ninsight', ninsight.router)
 
 app.use(`/${v5prefix}/` + 'bcash/slp', bcashSLP.router)
 
+app.use(`/${v5prefix}/` + 'psf/slp', psfSlpIndexer.router)
+
 // Daniel:
 // app.use(`/${v5prefix}/` + 'psfslp', psfSlp.router)
 

src/routes/v5/psf-slp-indexer.js

@@ -6,23 +6,96 @@
 const express = require('express')
 const router = express.Router()
 const axios = require('axios')
+const RouteUtils = require('../../util/route-utils')
+const routeUtils = new RouteUtils()
 
 // Local libraries
 // const wlogger = require('../../../util/winston-logging')
 // const config = require('../../../../config')
-
+let _this
 class PsfSlpIndexer {
   constructor () {
     // Encapsulate dependencies
-    this.axios = axios
-    this.router = router
+    _this = this
+    _this.axios = axios
+    _this.router = router
+    _this.routeUtils = routeUtils
+    _this.psfSlpIndexerApi = process.env.SLP_INDEXER_API
+    if (!this.psfSlpIndexerApi) {
+      // console.warn('FULCRUM_API env var not set. Can not connect to Fulcrum indexer.')
+      throw new Error(
+        'SLP_INDEXER_API env var not set. Can not connect to psf slp indexer.'
+      )
+    }
 
     // Define routes
-    // this.router.get('/', this.root)
+    _this.router.get('/', this.root)
     // this.router.get('/status', this.getStatus)
     // this.router.post('/address', this.getAddress)
     // this.router.post('/txid', this.getTxid)
-    // this.routner.post('/token', this.getTokenStats)
+    _this.router.post('/token', this.getTokenStats)
+  }
+
+  /**
+   * @api {post} /psf/slp/tokenStats/  List stats for a single slp token.
+   * @apiName List stats for a single slp token.
+   * @apiGroup PSF SLP
+   * @apiDescription Return list stats for a single slp token.
+   *
+   *
+   * @apiExample Example usage:
+   * curl -H "Content-Type: application/json" -X POST -d '{ "tokenId": "a4fb5c2da1aa064e25018a43f9165040071d9e984ba190c222a7f59053af84b2" }' localhost:3000/v5/psf/slp/token
+   *
+   *
+   */
+  async getTokenStats (req, res, next) {
+    try {
+      const tokenId = req.body.tokenId
+      if (!tokenId || tokenId === '') {
+        res.status(400)
+        return res.json({
+          success: false,
+          error: 'tokenId can not be empty'
+        })
+      }
+      const response = await _this.axios.post(
+        `${_this.psfSlpIndexerApi}slp/token/`,
+        { tokenId }
+      )
+
+      res.status(200)
+      return res.json(response.data)
+    } catch (err) {
+      return _this.errorHandler(err, res)
+    }
+  }
+
+  // DRY error handler.
+  errorHandler (err, res) {
+    // Attempt to decode the error message.
+    const { msg, status } = _this.routeUtils.decodeError(err)
+    // console.log('errorHandler msg: ', msg)
+    // console.log('errorHandler status: ', status)
+
+    if (msg) {
+      res.status(status)
+      return res.json({ success: false, error: msg })
+    }
+
+    // Handle error patterns specific to this route.
+    if (err.message) {
+      res.status(400)
+      return res.json({ success: false, error: err.message })
+    }
+
+    // If error can be handled, return the stack trace
+    res.status(500)
+    return res.json({ error: util.inspect(err) })
+  }
+
+  // Root API endpoint. Simply acknowledges that it exists.
+  root (req, res, next) {
+    return res.json({ status: 'psf-slp-indexer' })
   }
 }