Initial commit - Church Music Database

new-site/backend/middleware/errorHandler.js

@@ -0,0 +1,41 @@
+export const notFound = (req, res, next) => {
+  res.status(404).json({
+    error: "Not Found",
+    message: `Cannot ${req.method} ${req.originalUrl}`,
+  });
+};
+
+export const errorHandler = (err, req, res, next) => {
+  console.error("Error:", err);
+
+  // Handle validation errors
+  if (err.name === "ValidationError") {
+    return res.status(400).json({
+      error: "Validation Error",
+      details: err.errors,
+    });
+  }
+
+  // Handle duplicate key errors
+  if (err.code === 11000) {
+    return res.status(400).json({
+      error: "Duplicate Entry",
+      message: "A record with this value already exists",
+    });
+  }
+
+  // Handle JWT errors
+  if (err.name === "JsonWebTokenError") {
+    return res.status(401).json({
+      error: "Invalid Token",
+      message: "Your session is invalid",
+    });
+  }
+
+  // Default error
+  const statusCode = err.statusCode || 500;
+  res.status(statusCode).json({
+    error: err.message || "Internal Server Error",
+    ...(process.env.NODE_ENV === "development" && { stack: err.stack }),
+  });
+};