diff --git a/.gitignore b/.gitignore index 65474ba..02de8b6 100644 --- a/.gitignore +++ b/.gitignore @@ -94,3 +94,4 @@ coverage/ # Misc *.local +.env diff --git a/app.code-workspace b/app.code-workspace new file mode 100644 index 0000000..f495b86 --- /dev/null +++ b/app.code-workspace @@ -0,0 +1,12 @@ +{ + "_comment": "Datei wurde mit absicht commited - öffne das Project als workspace und nicht als normalen Ordner für Intellisense usw", + "folders": [ + { + "path": "backend" + }, + { + "path": "frontend" + } + ], + "settings": {} +} \ No newline at end of file diff --git a/backend/package-lock.json b/backend/package-lock.json new file mode 100644 index 0000000..84cae20 --- /dev/null +++ b/backend/package-lock.json @@ -0,0 +1,160 @@ +{ + "name": "backend", + "version": "1.0.0", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "backend", + "version": "1.0.0", + "license": "MIT", + "dependencies": { + "dotenv": "^17.2.2", + "mysql2": "^3.14.5" + } + }, + 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"node": ">=8.0.0" + }, + "funding": { + "type": "github", + "url": "https://github.com/sponsors/wellwelwel" + } + }, + "node_modules/mysql2": { + "version": "3.14.5", + "resolved": "https://registry.npmjs.org/mysql2/-/mysql2-3.14.5.tgz", + "integrity": "sha512-40hDf8LPUsuuJ2hFq+UgOuPwt2IFLIRDvMv6ez9hKbXeYuZPxDDwiJW7KdknvOsQqKznaKczOT1kELgFkhDvFg==", + "license": "MIT", + "dependencies": { + "aws-ssl-profiles": "^1.1.1", + "denque": "^2.1.0", + "generate-function": "^2.3.1", + "iconv-lite": "^0.7.0", + "long": "^5.2.1", + "lru.min": "^1.0.0", + "named-placeholders": "^1.1.3", + "seq-queue": "^0.0.5", + "sqlstring": "^2.3.2" + }, + "engines": { + "node": ">= 8.0" + } + }, + "node_modules/named-placeholders": { + "version": "1.1.3", + "resolved": "https://registry.npmjs.org/named-placeholders/-/named-placeholders-1.1.3.tgz", + "integrity": "sha512-eLoBxg6wE/rZkJPhU/xRX1WTpkFEwDJEN96oxFrTsqBdbT5ec295Q+CoHrL9IT0DipqKhmGcaZmwOt8OON5x1w==", + "license": "MIT", + "dependencies": { + "lru-cache": "^7.14.1" + }, + "engines": { + "node": ">=12.0.0" + } + }, + "node_modules/safer-buffer": { + "version": "2.1.2", + "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz", + "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==", + "license": "MIT" + }, + "node_modules/seq-queue": { + "version": "0.0.5", + "resolved": "https://registry.npmjs.org/seq-queue/-/seq-queue-0.0.5.tgz", + "integrity": "sha512-hr3Wtp/GZIc/6DAGPDcV4/9WoZhjrkXsi5B/07QgX8tsdc6ilr7BFM6PM6rbdAX1kFSDYeZGLipIZZKyQP0O5Q==" + }, + "node_modules/sqlstring": { + "version": "2.3.3", + "resolved": "https://registry.npmjs.org/sqlstring/-/sqlstring-2.3.3.tgz", + "integrity": "sha512-qC9iz2FlN7DQl3+wjwn3802RTyjCx7sDvfQEXchwa6CWOx07/WVfh91gBmQ9fahw8snwGEWU3xGzOt4tFyHLxg==", + "license": "MIT", + "engines": { + "node": ">= 0.6" + } + } + } +} diff --git a/backend/package.json b/backend/package.json index ab5a6e0..7033287 100644 --- a/backend/package.json +++ b/backend/package.json @@ -8,5 +8,9 @@ "main": "src/index.js", "scripts": { "start": "node src/index.js" + }, + "dependencies": { + "dotenv": "^17.2.2", + "mysql2": "^3.14.5" } } diff --git a/backend/src/db.js b/backend/src/db.js new file mode 100644 index 0000000..8c2144e --- /dev/null +++ b/backend/src/db.js @@ -0,0 +1,70 @@ +// copied from one of my older projects +const mysql = require('mysql2/promise'); + +function getEnvVar(name) { + const value = process.env[name]; + if (value === null) { + throw new Error(`Environment variable ${name} is not defined`); + } + return value; +} + +const pool = mysql.createPool({ + host: getEnvVar('MYSQL_HOST'), + user: getEnvVar('MYSQL_USER'), + password: getEnvVar('MYSQL_PASSWORD'), + database: getEnvVar('MYSQL_DB'), +}); + +const migrations = [ + { + name: "init_dart_table", + up: async (conn) => { + await conn.query(` + CREATE TABLE dart ( + id INT PRIMARY KEY AUTO_INCREMENT + ) + `); + } + } +]; + +async function initDB() { + await pool.query(` + CREATE TABLE IF NOT EXISTS migrations ( + id INT PRIMARY KEY AUTO_INCREMENT, + name VARCHAR(255) NOT NULL UNIQUE + ); + `); + + for (const m of migrations) { + const conn = await pool.getConnection(); + + try { + await conn.beginTransaction(); + + const [rows] = await conn.query( + `SELECT 1 FROM migrations WHERE name = ? LIMIT 1 FOR UPDATE`, + [m.name] + ); + + if (rows.length === 0) { + console.log(`Running migration: ${m.name}`); + await m.up(conn); + await conn.query(`INSERT INTO migrations (name) VALUES (?)`, [m.name]); + } + + await conn.commit(); + } catch (err) { + await conn.rollback(); + throw err; + } finally { + conn.release(); + } + } +} + +module.exports = { + pool, + initDB +}; \ No newline at end of file diff --git a/backend/src/index.js b/backend/src/index.js index e69de29..4b32d90 100644 --- a/backend/src/index.js +++ b/backend/src/index.js @@ -0,0 +1,4 @@ +require('dotenv').config() +const db = require('./db'); + +db.initDB(); \ No newline at end of file