MASSIVE commit

- moved to typescript

- axios rate limitmodule is busted, removed for now, do something else for that

- sequelize-typescript

- dotenv, not dotenv-flow

- removed playlist details route

types for API

ton of minor fixes and improvements

validators/index.ts

@@ -0,0 +1,38 @@
+import { validationResult } from "express-validator";
+
+import type { RequestHandler } from "express";
+
+import { getNestedValuesString } from "../utils/jsonTransformer.ts";
+
+import curriedLogger from "../utils/logger.ts";
+const logger = curriedLogger(import.meta.filename);
+
+/** Refer: https://stackoverflow.com/questions/58848625/access-messages-in-express-validator */
+export const validate: RequestHandler = (req, res, next) => {
+  const errors = validationResult(req);
+  if (errors.isEmpty()) {
+    return next();
+  }
+
+  const extractedErrors: Record<string, string>[] = [];
+  errors.array().forEach((err) => {
+    if (err.type === "alternative") {
+      err.nestedErrors.forEach((nestedErr) => {
+        extractedErrors.push({
+          [nestedErr.path]: nestedErr.msg,
+        });
+      });
+    } else if (err.type === "field") {
+      extractedErrors.push({
+        [err.path]: err.msg,
+      });
+    }
+  });
+
+  res.status(400).send({
+    message: getNestedValuesString(extractedErrors),
+    errors: extractedErrors,
+  });
+  logger.warn("invalid request", { extractedErrors });
+  return null;
+};