added transmissions migrate file

src/migrations/20200901034313-update-mail-transmission.js

@@ -0,0 +1,65 @@
+require('module-alias/register');
+const logger = require('@alias/logger')('growi:migrate:update-mail-transmission');
+
+const mongoose = require('mongoose');
+const config = require('@root/config/migrate');
+
+const { getModelSafely } = require('@commons/util/mongoose-utils');
+
+module.exports = {
+  async up(db, client) {
+    logger.info('Apply migration');
+    mongoose.connect(config.mongoUri, config.mongodb.options);
+
+    const Config = getModelSafely('Config') || require('@server/models/config')();
+
+    await Config.create({
+      ns: 'crowi',
+      key: 'mail:transmissionMethod',
+      value: 'smtp',
+    });
+
+    /* const smtpExist = await Config.findOne({
+      ns: 'crowi',
+      key: 'mail:smtpUser',
+    });
+
+    const sesExist = await Config.findOne({
+      ns: 'crowi',
+      key: 'mail:sesAccessKeyId',
+    });
+
+    const requestColumn = {ns: 'crowi', key: 'mail:transmissionMethod'};
+
+    if (smtpExist != null) {
+      requestColumn.value = 'smpt';
+    }
+    else if (sesExist != null) {
+      requestColumn.value = 'ses';
+    }
+    else {
+      await Config.create({
+        ns: 'crowi',
+        key: 'mail:transmissionMethod',
+        value: 'smtp',
+      });
+    } */
+
+    logger.info('Migration has successfully applied');
+  },
+
+  async down(db, client) {
+    logger.info('Rollback migration');
+    mongoose.connect(config.mongoUri, config.mongodb.options);
+
+    const Config = getModelSafely('Config') || require('@server/models/config')();
+
+    // remote 'app:siteUrl'
+    await Config.findOneAndDelete({
+      ns: 'crowi',
+      key: 'mail:transmissionMethod',
+    });
+
+    logger.info('Migration has been successfully rollbacked');
+  },
+};