add notification email

backend/package.json

@@ -39,6 +39,7 @@
     "@types/express": "^4.17.12",
     "@types/jsonwebtoken": "^8.5.2",
     "@types/libsodium-wrappers": "^0.7.9",
+    "@types/nodemailer": "^6.4.4",
     "@typescript-eslint/eslint-plugin": "^4.28.0",
     "@typescript-eslint/parser": "^4.28.0",
     "eslint": "^7.29.0",

backend/src/config/index.ts

@@ -36,7 +36,7 @@ const email = {
   EMAIL_SENDER: process.env.EMAIL_SENDER || 'info@gradido.net',
   EMAIL_PASSWORD: process.env.EMAIL_PASSWORD || 'xxx',
   EMAIL_SMTP_URL: process.env.EMAIL_SMTP_URL || 'gmail.com',
-  EMAIL_SMTP_PORT: process.env.EMAIL_SMTP_PORT || 587,
+  EMAIL_SMTP_PORT: process.env.EMAIL_SMTP_PORT || '587',
 }
 
 // This is needed by graphql-directive-auth

backend/src/graphql/resolver/TransactionResolver.ts

@@ -3,6 +3,7 @@
 
 import { Resolver, Query, Args, Authorized, Ctx, Mutation } from 'type-graphql'
 import { getCustomRepository, getConnection, getRepository } from 'typeorm'
+import { createTransport } from 'nodemailer'
 
 import CONFIG from '../../config'
 
@@ -354,6 +355,8 @@ async function sendCoins(
       signature: { ed25519: sign },
     })
     const sigMap = SignatureMap.create({ sigPair: [sigPair] })
+    const userRepository = getCustomRepository(UserRepository)
+    const recipiantUser = await userRepository.findByPubkeyHex(recipiantPublicKey)
 
     // created transaction, now save it to db
     await getConnection().transaction(async (transactionalEntityManager) => {
@@ -365,10 +368,8 @@ async function sendCoins(
       transactionRepository.save(transaction).catch(() => {
         throw new Error('error saving transaction')
       })
-      console.log('transaction after saving: %o', transaction)
-
-      const userRepository = getCustomRepository(UserRepository)
-      const recipiantUser = await userRepository.findByPubkeyHex(recipiantPublicKey)
+      console.log('transaction after saving: %o', transaction)  
+      
       if (!recipiantUser) {
         throw new Error('Cannot find recipiant user by local send coins transaction')
       }
@@ -438,6 +439,35 @@ async function sendCoins(
       })
     })
     // send notification email
+    if(CONFIG.EMAIL) {
+      let transporter = createTransport({
+        host: CONFIG.EMAIL_SMTP_URL,
+        port: Number(CONFIG.EMAIL_SMTP_PORT),
+        secure: false, // true for 465, false for other ports
+        requireTLS: true,
+        auth: {
+          user: CONFIG.EMAIL_USERNAME,
+          pass: CONFIG.EMAIL_PASSWORD, 
+        },
+      });
+    
+      // send mail with defined transport object
+      // TODO: translate
+      let info = await transporter.sendMail({
+        from: 'Gradido (nicht antworten) <' + CONFIG.EMAIL_SENDER + '>', // sender address
+        to: recipiantUser.firstName + ' ' + recipiantUser.lastName + ' <' + recipiantUser.email + '>', // list of receivers
+        subject: 'Gradido Überweisung', // Subject line 
+        text: 'Hallo ' + recipiantUser.firstName + ' ' + recipiantUser.lastName + ',\n\n'
+            + 'Du hast soeben ' + amount + ' GDD von ' + senderUser.firstName + ' ' + senderUser.lastName + ' erhalten.\n'
+            + senderUser.firstName + ' ' + senderUser.lastName + ' schreibt: \n\n'
+            + memo + '\n\n'
+            + 'Bitte antworte nicht auf diese E-Mail!\n\n'
+            + 'Mit freundlichen Grüßen\ņ Gradido Community Server', // plain text body
+      });
+      if(!info.messageId) {
+        throw new Error('error sending notification email, but transaction succeed')
+      }
+    }
   }
   return true
 }

backend/yarn.lock

@@ -923,6 +923,13 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-14.17.4.tgz#218712242446fc868d0e007af29a4408c7765bc0"
   integrity sha512-8kQ3+wKGRNN0ghtEn7EGps/B8CzuBz1nXZEIGGLP2GnwbqYn4dbTs7k+VKLTq1HvZLRCIDtN3Snx1Ege8B7L5A==
 
+"@types/nodemailer@^6.4.4":
+  version "6.4.4"
+  resolved "https://registry.yarnpkg.com/@types/nodemailer/-/nodemailer-6.4.4.tgz#c265f7e7a51df587597b3a49a023acaf0c741f4b"
+  integrity sha512-Ksw4t7iliXeYGvIQcSIgWQ5BLuC/mljIEbjf615svhZL10PE9t+ei8O9gDaD3FPCasUJn9KTLwz2JFJyiiyuqw==
+  dependencies:
+    "@types/node" "*"
+
 "@types/prettier@^2.1.5":
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/@types/prettier/-/prettier-2.4.1.tgz#e1303048d5389563e130f5bdd89d37a99acb75eb"
@@ -4204,6 +4211,11 @@ node-releases@^1.1.76:
   resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.76.tgz#df245b062b0cafbd5282ab6792f7dccc2d97f36e"
   integrity sha512-9/IECtNr8dXNmPWmFXepT0/7o5eolGesHUa3mtr0KlgnCvnZxwh2qensKL42JJY2vQKC3nIBXetFAqR+PW1CmA==
 
+nodemailer@^6.6.5:
+  version "6.6.5"
+  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.6.5.tgz#f9f6953cee5cfe82cbea152eeddacf7a0442049a"
+  integrity sha512-C/v856DBijUzHcHIgGpQoTrfsH3suKIRAGliIzCstatM2cAa+MYX3LuyCrABiO/cdJTxgBBHXxV1ztiqUwst5A==
+
 nodemon@^2.0.7:
   version "2.0.7"
   resolved "https://registry.npmjs.org/nodemon/-/nodemon-2.0.7.tgz"