Initial commit

api/middlewares/errorHandler.ts

@@ -0,0 +1,42 @@
+import type { NextFunction, Request, Response } from 'express'
+import type { ApiResponse } from '../../shared/types.js'
+import { ERROR_CODES } from '../../shared/constants/errors.js'
+import { isAppError, isNodeError } from '../../shared/errors/index.js'
+import { logger } from '../utils/logger.js'
+
+export const errorHandler = (err: unknown, _req: Request, res: Response, _next: NextFunction) => {
+  let statusCode: number = 500
+  let code: string = ERROR_CODES.INTERNAL_ERROR
+  let message: string = 'Server internal error'
+  let details: unknown = undefined
+
+  if (isAppError(err)) {
+    statusCode = err.statusCode
+    code = err.code
+    message = err.message
+    details = err.details
+  } else if (isNodeError(err)) {
+    message = err.message
+    if (process.env.NODE_ENV !== 'production') {
+      details = { stack: err.stack, nodeErrorCode: err.code }
+    }
+  } else if (err instanceof Error) {
+    message = err.message
+    if (process.env.NODE_ENV !== 'production') {
+      details = { stack: err.stack }
+    }
+  }
+
+  logger.error(err)
+
+  const response: ApiResponse<null> = {
+    success: false,
+    error: {
+      code,
+      message,
+      details: process.env.NODE_ENV === 'production' ? undefined : details,
+    },
+  }
+
+  res.status(statusCode).json(response)
+}