prisma (#1)

migrate from knex to prisma on backend

Co-authored-by: fred <>
Reviewed-on: #1

backend/src/utils/logger.js

@@ -0,0 +1,33 @@
+const fs = require("fs");
+
+class Logger {
+  constructor(filePath) {
+    this.filePath = "/logs/app.log";
+  }
+
+  log(level, message, params) {
+    const logEntry = {
+      timestamp: new Date().toISOString(),
+      level: level,
+      message: message,
+      params: params,
+    };
+    fs.appendFile(this.filePath, JSON.stringify(logEntry) + "\n", (err) => {
+      if (err) throw err;
+    });
+  }
+
+  info(message, params = {}) {
+    this.log("info", message, params);
+  }
+
+  warn(message, params = {}) {
+    this.log("warn", message, params);
+  }
+
+  error(message, params = {}) {
+    this.log("error", message, params);
+  }
+}
+
+module.exports = Logger;