Merge pull request #1060 from weseek/imprv/2044-add-config-app-installed

add migration file for app:installed

src/migrations/20190618104011-add-config-app-installed.js

@@ -0,0 +1,69 @@
+require('module-alias/register');
+const logger = require('@alias/logger')('growi:migrate:add-config-app-installed');
+
+const mongoose = require('mongoose');
+const config = require('@root/config/migrate');
+
+function getModel(modelName) {
+  if (mongoose.modelNames().includes(modelName)) {
+    return mongoose.model(modelName);
+  }
+  return null;
+}
+
+/**
+ * BEFORE
+ *   - Config document { ns: 'crowi', key: 'app:installed' } does not exist
+ * AFTER
+ *   - Config document { ns: 'crowi', key: 'app:installed' } is created
+ *     - value will be true if one or more users exist
+ *     - value will be false if no users exist
+ */
+module.exports = {
+
+  async up(db) {
+    logger.info('Apply migration');
+    mongoose.connect(config.mongoUri, config.mongodb.options);
+
+    const Config = getModel('Config') || require('@server/models/config')();
+    const User = getModel('User') || require('@server/models/user')();
+
+    // find 'app:siteUrl'
+    const appInstalled = await Config.findOne({
+      ns: 'crowi',
+      key: 'app:installed',
+    });
+    // exit if exists
+    if (appInstalled != null) {
+      logger.info('\'app:appInstalled\' is already exists. This migration terminates without any changes.');
+      return;
+    }
+
+    const userCount = await User.count();
+
+    if (userCount > 0) {
+      await Config.create({
+        ns: 'crowi',
+        key: 'app:installed',
+        value: true,
+      });
+    }
+
+    logger.info('Migration has successfully applied');
+  },
+
+  async down(db) {
+    logger.info('Undo migration');
+    mongoose.connect(config.mongoUri, config.mongodb.options);
+
+    const Config = getModel('Config') || require('@server/models/config')();
+
+    // remote 'app:siteUrl'
+    await Config.findOneAndDelete({
+      ns: 'crowi',
+      key: 'app:installed',
+    });
+
+    logger.info('Migration has successfully undoed');
+  },
+};