ported migration code (no testing yet)

node/routes/api/migration.js

@@ -0,0 +1,72 @@
+const express = require('express');
+const router = express.Router();
+const auth = require('../../auth');
+const backup = require('../../backup');
+const sql = require('../../sql');
+const fs = require('fs-extra');
+
+const APP_DB_VERSION = 0;
+const MIGRATIONS_DIR = "migrations";
+
+router.get('', auth.checkApiAuth, async (req, res, next) => {
+    res.send({
+        'db_version': parseInt(await sql.getOption('db_version')),
+        'app_db_version': APP_DB_VERSION
+    });
+});
+
+router.post('', auth.checkApiAuth, async (req, res, next) => {
+    const migrations = [];
+
+    await backup.backupNow();
+
+    const currentDbVersion = parseInt(await sql.getOption('db_version'));
+
+    fs.readdirSync(MIGRATIONS_DIR).forEach(file => {
+        const match = file.match(/([0-9]{4})__([a-zA-Z0-9_ ]+)\.sql/);
+
+        if (match) {
+            const dbVersion = parseInt(match.group(1));
+
+            if (dbVersion > currentDbVersion) {
+                const name = match.group(2);
+
+                const migrationRecord = {
+                    'db_version': dbVersion,
+                    'name': name,
+                    'file': file
+                };
+
+                migrations.push(migrationRecord);
+            }
+        }
+    });
+
+    migrations.sort((a, b) => a.db_version - b.db_version);
+
+    for (const mig of migrations) {
+        const migrationSql = fs.readFileSync(MIGRATIONS_DIR + "/" + mig.file);
+
+        try {
+            await sql.beginTransaction();
+
+            await sql.executeScript(migrationSql);
+
+            await sql.commit();
+
+            mig['success'] = true;
+        }
+        catch (e) {
+            mig['success'] = false;
+            mig['error'] = e.stack;
+
+            break;
+        }
+    }
+
+    res.send({
+        'migrations': migrations
+    });
+});
+
+module.exports = router;