Initial commit

Next.js + Express event management app for Hope Family Church.

backend/src/utils/errorUtils.js

@@ -0,0 +1,43 @@
+// Prisma error codes all match P followed by 4 digits
+const PRISMA_CODE_RE = /^P\d{4}$/;
+
+/**
+ * Returns a client-safe error message.
+ * Prisma errors and connection errors can expose table names, column names,
+ * DB hostnames and ports — replace those with generic messages.
+ * Intentional application errors (thrown with `new Error('...')` in controllers)
+ * are passed through unchanged.
+ */
+function safeErrorMessage(err) {
+  if (!err) return 'An unexpected error occurred.';
+
+  const code = String(err.code || '');
+
+  // Prisma client / query engine errors
+  if (PRISMA_CODE_RE.test(code)) {
+    switch (code) {
+      case 'P2002': return 'A record with that value already exists.';
+      case 'P2025': return 'Record not found.';
+      case 'P2003': return 'Operation failed due to a related record constraint.';
+      case 'P2016': return 'Required record not found.';
+      default:      return 'A database error occurred. Please try again.';
+    }
+  }
+
+  const msg = String(err.message || '');
+
+  // DB connection / network errors leak hostnames and ports
+  if (
+    msg.includes("Can't reach database") ||
+    msg.includes('ECONNREFUSED') ||
+    msg.includes('ETIMEDOUT') ||
+    msg.includes('Connection refused') ||
+    msg.includes('database server')
+  ) {
+    return 'A database connection error occurred. Please try again later.';
+  }
+
+  return msg || 'An unexpected error occurred.';
+}
+
+module.exports = { safeErrorMessage };