Added base error handling

src/app/dashboard/(auth)/roles/_modals/DeleteModal/DeleteModal.tsx

@@ -12,55 +12,71 @@ import {
 	Stack,
 	TextInput,
 	Title,
+	Alert,
 } from "@mantine/core";
 import { showNotification } from "@/utils/notifications";
 import deleteRole from "@/features/dashboard/roles/actions/deleteRole";
+import withErrorHandling from "@/features/dashboard/utils/withServerAction";
+import { error } from "console";
+import DashboardError from "@/features/dashboard/errors/DashboardError";
+import { revalidatePath } from "next/cache";
 
 export interface DeleteModalProps {
 	data?: {
-        id: string,
+		id: string;
-        name: string,
+		name: string;
 	};
-    onClose: () => void
+	onClose: () => void;
 }
 
 export default function DeleteModal(props: DeleteModalProps) {
 	const router = useRouter();
 
 	const [isSubmitting, setSubmitting] = useState(false);
+	const [errorMessage, setErrorMessage] = useState("");
 
 	/**
 	 * Closes the modal. It won't close if a submission is in progress.
 	 */
 	const closeModal = () => {
 		if (isSubmitting) return;
-		props.onClose()
+        setErrorMessage("")
+		props.onClose();
 	};
 
 	const confirmAction = () => {
 		if (!props.data?.id) return;
-        setSubmitting(true)
+		setSubmitting(true);
-        deleteRole(props.data.id)
+
+		withErrorHandling(() => deleteRole(props.data!.id))
 			.then((response) => {
-                if (response.success){
+				showNotification(
-                    showNotification(response.message);
+					response.message ?? "Role deleted successfully"
-                    setSubmitting(false)
+				);
+				setSubmitting(false);
                 props.onClose()
-                    return;
-                } else {
-                    showNotification(response.message, "error")
-                }
 			})
-            .catch(() => {
+			.catch((e) => {
-                //TODO: Handle Error
+                if (e instanceof DashboardError){
+                    setErrorMessage(`ERROR: ${e.message} (${e.errorCode})`)
+                }
+                else if (e instanceof Error) {
+                    setErrorMessage(`ERROR: ${e.message}`)
+				} else {
+                    setErrorMessage(`Unkown error is occured. Please contact administrator`)
+                }
 			})
             .finally(() => {
                 setSubmitting(false)
-            })
+            });
-    }
+	};
 
 	return (
-		<Modal opened={!!props.data} onClose={closeModal} title={`Delete confirmation`}>
+		<Modal
+			opened={!!props.data}
+			onClose={closeModal}
+			title={`Delete confirmation`}
+		>
 			<Text size="sm">
 				Are you sure you want to delete role{" "}
 				<Text span fw={700}>
@@ -68,6 +84,8 @@ export default function DeleteModal(props: DeleteModalProps) {
 				</Text>
 				? This action is irreversible.
 			</Text>
+
+			{errorMessage && <Alert color="red">{errorMessage}</Alert>}
 			{/* Buttons */}
 			<Flex justify="flex-end" align="center" gap="lg" mt="lg">
 				<Button

src/db/index.ts

@@ -1,5 +1,15 @@
-import { PrismaClient } from "@prisma/client";
+import { PrismaClient } from '@prisma/client'
 
-const prisma = new PrismaClient();
+const prismaClientSingleton = () => {
+  return new PrismaClient()
+}
 
-export default prisma;
+declare global {
+  var prisma: undefined | ReturnType<typeof prismaClientSingleton>
+}
+
+const prisma = globalThis.prisma ?? prismaClientSingleton()
+
+export default prisma
+
+if (process.env.NODE_ENV !== 'production') globalThis.prisma = prisma

src/features/dashboard/errors/DashboardError.ts

@@ -0,0 +1,73 @@
+import { Prisma } from "@prisma/client";
+
+export const DashboardErrorCodes = [
+    "UNAUTHORIZED",
+    "NOT_FOUND",
+    "UNKNOWN_ERROR",
+    "INVALID_FORM_DATA"
+] as const;
+
+interface ErrorOptions {
+    message?: string,
+    errorCode?: typeof DashboardErrorCodes[number] | string & {},
+    formErrors?: {[k: string]: string}
+}
+
+export default class DashboardError extends Error {
+    public readonly errorCode: string;
+    public readonly formErrors?: {[k: string]: string}
+    // public readonly data: object;
+
+    constructor(options: ErrorOptions) {
+        super(options.message ?? "Undetermined Error"); // Pass message to the Error parent class
+        this.errorCode = options.errorCode ?? "UNKNOWN_ERROR";
+        this.formErrors = options.formErrors;
+        // this.data = data;
+        Object.setPrototypeOf(this, new.target.prototype); // restore prototype chain
+    }
+
+    getErrorReponseObject(){
+        return {
+            success: false,
+            dashboardError: true,
+            error: {
+                message: `${this.message}`,
+                errorCode: this.errorCode,
+                errors: this.formErrors ?? undefined
+            }
+        } as const
+    }
+}
+
+export const handleCatch = (e: unknown) => {
+    if (e instanceof DashboardError){
+        return e.getErrorReponseObject()
+    }
+    if (e instanceof Prisma.PrismaClientKnownRequestError){
+        //Not found
+        if (e.code === "P2025"){
+            const error = new DashboardError({errorCode: "NOT_FOUND", message: "The requested data could not be located. It may have been deleted or relocated. Please verify the information or try a different request."})
+            return error.getErrorReponseObject()
+        }
+    }
+    if (e instanceof Error) {
+        return {
+            success: false,
+            dashboardError: false,
+            message: e.message
+        } as const;
+    } else {
+        return {
+            success: false,
+            dashboardError: false,
+            message: "Unkown error"
+        } as const
+    }
+}
+
+export const unauthorized = () => {
+    throw new DashboardError({
+        errorCode: "UNAUTHORIZED",
+        message: "You are unauthorized to do this action"
+    })
+}

src/features/dashboard/roles/actions/deleteRole.ts

@@ -1,26 +1,26 @@
 "use server";
 
-import { unauthorized } from "@/BaseError";
 import prisma from "@/db";
 import checkPermission from "@/features/auth/tools/checkPermission";
+import { handleCatch, unauthorized } from "../../errors/DashboardError";
+import ServerResponse from "@/types/Action";
+import { revalidatePath } from "next/cache";
 
-export default async function deleteRole(id: string) {
+export default async function deleteRole(id: string): Promise<ServerResponse> {
-	if (!(await checkPermission("role.delete"))) return unauthorized();
-
     try {
+        if (!(await checkPermission("role.delete"))) return unauthorized();
 		const role = await prisma.role.delete({
 			where: { id },
 		});
 
+
+        revalidatePath(".")
+
 		return {
 			success: true,
 			message: "The role has been deleted successfully",
-		} as const;
+		};
-	} catch (e) {
+	} catch (e: unknown) {
-		//TODO: Handle error
+        return handleCatch(e)
-		return {
-			success: false,
-			message: "Unable to delete the role",
-		} as const;
 	}
 }

src/features/dashboard/utils/withServerAction.ts

@@ -0,0 +1,25 @@
+import ServerResponse from "@/types/Action";
+import DashboardError from "../errors/DashboardError";
+
+async function withErrorHandling<T extends ServerResponse>(
+	asyncFunction: () => Promise<T>
+): Promise<T> {
+	const result = await asyncFunction();
+	if (result.success) {
+        return result;
+	} else {
+        if (result.dashboardError && result.error) {
+			const errorDetails = result.error;
+			throw new DashboardError({
+				message: errorDetails.message,
+				errorCode: errorDetails.errorCode,
+				formErrors: errorDetails.errors,
+			});
+		} else {
+			// Handle non-dashboard errors
+			throw new Error(result.message ?? "Unknown error occurred.");
+		}
+	}
+}
+
+export default withErrorHandling;

src/types/Action.d.ts

@@ -1,11 +1,18 @@
-type SuccessResponse<T> = {
+type ServerResponse<T = undefined> =
-    success: true,
+	| {
-    data: T
+			success: false;
+			dashboardError?: boolean;
+			error?: {
+				message?: string;
+				errorCode?: string;
+				errors?: { [k: string]: string };
+			};
+			message?: string;
 	  }
+	| {
+			success: true;
+			message?: string;
+			data?: T;
+	  };
 
-type ErrorResponse<E> = {
+export default ServerResponse;
-    success: false,
-    error: E & {message: string}
-}
-
-type Action = SuccessResponse<> | ErrorResponse<>