/*
	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 { route } from "@spacebar/api";
import { Channel, Guild, Member } from "@spacebar/util";
import { Request, Response, Router } from "express";
import { GuildUpdateWelcomeScreenSchema } from "@spacebar/schemas";

const router: Router = Router({ mergeParams: true });

router.get(
    "/",
    route({
        responses: {
            200: {
                body: "GuildWelcomeScreen",
            },
            404: {
                body: "APIErrorResponse",
            },
        },
    }),
    async (req: Request, res: Response) => {
        const guild_id = req.params.guild_id as string;

        const guild = await Guild.findOneOrFail({ where: { id: guild_id } });
        await Member.IsInGuildOrFail(req.user_id, guild_id);

        res.json(guild.welcome_screen);
    },
);

router.patch(
    "/",
    route({
        requestBody: "GuildUpdateWelcomeScreenSchema",
        permission: "MANAGE_GUILD",
        responses: {
            204: {},
            400: {
                body: "APIErrorResponse",
            },
            404: {
                body: "APIErrorResponse",
            },
        },
    }),
    async (req: Request, res: Response) => {
        const guild_id = req.params.guild_id as string;
        const body = req.body as GuildUpdateWelcomeScreenSchema;

        const guild = await Guild.findOneOrFail({ where: { id: guild_id } });

        if (body.enabled != undefined) guild.welcome_screen.enabled = body.enabled;

        if (body.description != undefined) guild.welcome_screen.description = body.description;

        if (body.welcome_channels != undefined) {
            // Ensure channels exist within the guild
            await Promise.all(
                body.welcome_channels?.map(({ channel_id }) =>
                    Channel.findOneOrFail({
                        where: { id: channel_id, guild_id },
                        select: { id: true },
                    }),
                ) || [],
            );
            guild.welcome_screen.welcome_channels = body.welcome_channels;
        }

        await guild.save();

        res.status(200).json(guild.welcome_screen);
    },
);

export default router;