1 files changed, 85 insertions, 0 deletions
diff --git a/src/server/errHanadler.ts b/src/server/errHanadler.ts
new file mode 100644
index 0000000..84f9b26
--- /dev/null
+++ b/src/server/errHanadler.ts
@@ -0,0 +1,85 @@
+import Base from "./template/Base.js"
+import createError from "http-errors"
+import t, { c } from "./template/vdom.js"
+import h from "./template/header.js"
+import { STATUS_CODES } from "node:http"
+import app from "./app.js"
+import isDevel from "./utils/isDevel.js"
+import isDefined from "./utils/isDefined.js"
+import type express from "express"
+import type { HttpError } from "http-errors"
+
+interface ErrObj {
+	code: number | string,
+	msg: string,
+	debug?: string | undefined
+}
+
+async function errorTemplate(data: ErrObj): Promise<{ html: string; text: string; obj: ErrObj }> {
+	const { code, msg, debug } = data
+	const arg = {
+		...data,
+		title: msg,
+		content() {
+			return [
+				c(h, { level: 1, style: "color: darkred" }, `ERROR: ${code}`),
+				t("p", {}, msg),
+				isDefined(debug) && isDevel(app) ? t("p", {}, t("pre", {}, debug)) : ""
+			]
+		}
+	}
+	return {
+		html: await Base(arg).render(),
+		text: `${code} - ${msg}
+${debug || ""}`,
+		obj: data
+	}
+
+}
+
+async function errRender(res: express.Response,	opt: ErrObj) {
+	const msg = await errorTemplate(opt)
+	res.format({
+		html: () => {
+			res.send(msg.html)
+		},
+		json: () => {
+			res.send(msg.obj)
+		},
+		default: () => {
+			res.type("txt").send(msg.text)
+		}
+	})
+}
+
+export const errHandler = async function (
+	err: HttpError,
+	_req: express.Request,
+	res: express.Response,
+	_next: express.NextFunction
+) {
+	res.status(err.status || 500)
+
+	await errRender(res, {
+		code: res.statusCode,
+		msg: res.statusMessage || STATUS_CODES[res.statusCode] || "Unknown",
+		debug: err.stack
+	})
+
+	console.error(err + (err.stack ?? ""))
+}
+
+export function notFound(_req: express.Request,
+	_res: express.Response,
+	next: express.NextFunction
+) {
+	next(createError(404))
+}
+
+export async function offline(_req: express.Request,
+	res: express.Response) {
+	await errRender(res, {
+		code: "Offline",
+		msg: "Can not reach the website. Check your Network",
+	})
+}
+\ No newline at end of file