feat(utxoIsValid): Adding endpoint support for utxoIsValid

src/adapters/bch/index.js

@@ -387,6 +387,48 @@ class BchAdapter {
     }
   }
 
+  async utxoIsValid (utxo) {
+    try {
+      // Throw an error if this IPFS node has not yet made a connection to a
+      // wallet service provider.
+      const selectedProvider =
+        this.ipfs.ipfsCoordAdapter.state.selectedServiceProvider
+      if (!selectedProvider) {
+        throw new Error('No BCH Wallet Service provider available yet.')
+      }
+
+      const rpcData = {
+        endpoint: 'utxoIsValid',
+        utxo
+      }
+
+      // Generate a UUID for the call.
+      const rpcId = this.uid()
+
+      // Generate a JSON RPC command.
+      const cmd = this.jsonrpc.request(rpcId, 'bch', rpcData)
+      const cmdStr = JSON.stringify(cmd)
+      console.log('cmdStr: ', cmdStr)
+
+      // Send the RPC command to selected wallet service.
+      const thisNode = this.ipfs.ipfsCoordAdapter.ipfsCoord.thisNode
+      await this.ipfs.ipfsCoordAdapter.ipfsCoord.useCases.peer.sendPrivateMessage(
+        selectedProvider,
+        cmdStr,
+        thisNode
+      )
+
+      // Wait for data to come back from the wallet service.
+      const data = await this.waitForRPCResponse(rpcId)
+
+      return data
+    } catch (err) {
+      console.log('utxoIsValid() error: ', err)
+      wlogger.error('Error in adapters/bch.js/utxoIsValid()')
+      throw err
+    }
+  }
+
   // Returns a promise that resolves to data when the RPC response is recieved.
   async waitForRPCResponse (rpcId) {
     try {

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

@@ -489,6 +489,8 @@ class BchRESTControllerLib {
    *          "pubkey": {
    *            "success": true,
    *            "publicKey": "033f267fec0f7eb2b27f8c2e3052b3d03b09d36b47de4082ffb638ffb334ef0eee"
+   *          }
+   *        }
    *     }
    *  }
    */
@@ -505,6 +507,54 @@ class BchRESTControllerLib {
     }
   }
 
+  /**
+   * @api {REST} /bch/utxoIsValid utxoIsValid
+   * @apiPermission public
+   * @apiName utxoIsValid
+   * @apiGroup REST BCH
+   * @apiDescription Verify if UTXO is valid
+   * Given a UTXO object (txid and vout), a full node is queried to verify that
+   * the UTXO still exists in the mempool (true), or if it has been spent (false).
+   *
+   *  - jsonrpc: "" - jsonrpc version
+   *  - id: "" - jsonrpc id
+   *  - result: {} - Result of the petition with the RPC information
+   *      - success: - Request status
+   *      - isValid: - Boolean: true or false
+   *
+   * @apiExample Example usage:
+   * {"jsonrpc":"2.0","id":"555","method":"bch","params":{ "endpoint": "utxoIsValid", "utxo": {"tx_hash": "17754221b29f189532d4fc2ae89fb467ad2dede30fdec4854eb2129b3ba90d7a", "tx_pos": 0}}}
+   *
+   * @apiSuccessExample {json} Success-Response:
+   *  {
+   *     "jsonrpc":"2.0",
+   *     "id":"555",
+   *     "result":{
+   *        "method":"bch",
+   *        "reciever":"QmU86vLVbUY1UhziKB6rak7GPKRA2QHWvzNm2AjEvXNsT6",
+   *        "value":{
+   *          "success": true,
+   *          "status": 200,
+   *          "endpoint": "utxoIsValid",
+   *          "isValid": true
+   *        }
+   *     }
+   *
+   *  }
+   */
+  async utxoIsValid (ctx) {
+    try {
+      const utxo = ctx.request.body.utxo
+
+      const data = await this.adapters.bch.utxoIsValid(utxo)
+      console.log(`utxoIsValid data: ${JSON.stringify(data, null, 2)}`)
+
+      ctx.body = data
+    } catch (err) {
+      this.handleError(ctx, err)
+    }
+  }
+
   // DRY error handler
   handleError (ctx, err) {
     // If an HTTP status is specified by the buisiness logic, use that.

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

@@ -59,6 +59,8 @@ class BchRouter {
     this.router.post('/txHistory', this.postTxHistory)
     this.router.post('/txData', this.postTxData)
     this.router.post('/pubkey', this.postPubKey)
+    this.router.post('/utxoIsValid', this.utxoIsValid)
+    // this.router.post('/getTokenData', this.getTokenData)
 
     // Attach the Controller routes to the Koa app.
     app.use(this.router.routes())
@@ -96,6 +98,10 @@ class BchRouter {
   async postPubKey (ctx, next) {
     await _this.bchRESTController.pubKey(ctx, next)
   }
+
+  async utxoIsValid (ctx, next) {
+    await _this.bchRESTController.utxoIsValid(ctx, next)
+  }
 }
 
 module.exports = BchRouter

test/unit/adapters/bch.adapter.unit.js

@@ -284,4 +284,34 @@ describe('#bch-use-case', () => {
       }
     })
   })
+
+  describe('#utxoIsValid', () => {
+    it('should validate a utxo', async () => {
+      // Force connection to a wallet service
+      uut.ipfs.ipfsCoordAdapter.state = {
+        selectedServiceProvider: 'abc123'
+      }
+
+      // Mock depenencies
+      sandbox.stub(uut, 'waitForRPCResponse').resolves({ key: 'value' })
+
+      const utxo = {a: 'b'}
+
+      const result = await uut.utxoIsValid(utxo)
+      // console.log('result: ', result)
+
+      assert.equal(result.key, 'value')
+    })
+
+    it('should catch and throw an error', async () => {
+      try {
+        await uut.utxoIsValid()
+
+        assert.fail('Unexpected code path')
+      } catch (err) {
+        // console.log(err)
+        assert.equal(err.message, 'test error')
+      }
+    })
+  })
 })

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

@@ -322,4 +322,40 @@ describe('#BCH-REST-Controller', () => {
       assert.equal(ctx.status, 200)
     })
   })
+
+  describe('#utxoIsValid', () => {
+    it('should return 422 status on arbitrary error', async () => {
+      try {
+        // Force an error
+        sandbox
+          .stub(uut.adapters.bch, 'utxoIsValid')
+          .rejects(new Error('test error'))
+
+        ctx.request.body = {
+          utxo: 'blah'
+        }
+
+        await uut.utxoIsValid(ctx)
+
+        assert.fail('Unexpected result')
+      } catch (err) {
+        console.log('err: ', err)
+        assert.equal(err.status, 422)
+        assert.include(err.message, 'test error')
+      }
+    })
+
+    it('should return 200 status on success', async () => {
+      sandbox.stub(uut.adapters.bch, 'utxoIsValid').resolves({ status: 200 })
+
+      ctx.request.body = {
+        utxo: 'blah'
+      }
+
+      await uut.utxoIsValid(ctx)
+
+      // Assert the expected HTTP response
+      assert.equal(ctx.status, 200)
+    })
+  })
 })

test/unit/mocks/adapters/index.js

@@ -93,6 +93,14 @@ class BchUseCaseMock {
     return {}
   }
 
+  async utxoIsValid() {
+    return {}
+  }
+
+  async getTokenData() {
+    return {}
+  }
+
   async waitForRPCResponse () {
     return {}
   }