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/*
Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
Copyright (C) 2023 Spacebar and Spacebar Contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { NextFunction, Request, Response } from "express";
import { HTTPError } from "lambert-server";
import { ApiError, FieldError } from "@spacebar/util";
const EntityNotFoundErrorRegex = /"(\w+)"/;
export function ErrorHandler(
error: Error & { type?: string },
req: Request,
res: Response,
next: NextFunction,
) {
if (!error) return next();
try {
let code = 400;
let httpcode = code;
let message = error?.toString();
let errors = undefined;
if (error instanceof HTTPError && error.code)
code = httpcode = error.code;
else if (error instanceof ApiError) {
code = error.code;
message = error.message;
httpcode = error.httpStatus;
} else if (error.name === "EntityNotFoundError") {
message = `${
error.message.match(EntityNotFoundErrorRegex)?.[1] || "Item"
} could not be found`;
code = httpcode = 404;
} else if (error instanceof FieldError) {
code = Number(error.code);
message = error.message;
errors = error.errors;
} else if (error?.type == "entity.parse.failed") {
// body-parser failed
httpcode = 400;
code = 50109;
message = "The request body contains invalid JSON.";
} else {
console.error(
`[Error] ${code} ${req.url}\n`,
errors || error,
"\nbody:",
req.body,
);
if (req.server?.options?.production) {
// don't expose internal errors to the user, instead human errors should be thrown as HTTPError
message = "Internal Server Error";
}
code = httpcode = 500;
}
if (httpcode > 511) httpcode = 400;
res.status(httpcode).json({ code: code, message, errors });
} catch (error) {
console.error(`[Internal Server Error] 500`, error);
return res
.status(500)
.json({ code: 500, message: "Internal Server Error" });
}
}
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