import { Route } from '@/types';
import cache from '@/utils/cache';
import { getConfig } from './utils';
import ofetch from '@/utils/ofetch';
import { config } from '@/config';

export const route: Route = {
    path: '/:configId/notifications/:fulltext?',
    categories: ['bbs'],
    example: '/discourse/0/notifications',
    parameters: { configId: 'Environment variable configuration id, see above', fulltext: 'Fetch the content if the notification points to a post. This is disabled by default, set it to `1` to enable it.' },
    features: {
        requireConfig: [
            {
                name: 'DISCOURSE_CONFIG_*',
                description: '',
            },
        ],
        requirePuppeteer: false,
        antiCrawler: false,
        supportBT: false,
        supportPodcast: false,
        supportScihub: false,
    },
    name: 'Notifications',
    maintainers: [],
    handler,
    description: `::: warning
If you opt to enable \`fulltext\` feature, consider adding \`limit\` parameter to your query to avoid sending too many request.
:::`,
};

async function handler(ctx) {
    const { link, key } = getConfig(ctx);

    const response = await ofetch(`${link}/notifications.json`, { headers: { 'User-Api-Key': key } });
    let items = response.notifications.slice(0, ctx.req.query('limit') ? Number.parseInt(ctx.req.query('limit')) : 10).map((e) => ({
        title: e.fancy_title ?? e.data.badge_name,
        link: `${link}/${Object.hasOwn(e.data, 'badge_id') ? `badges/${e.data.badge_id}/${e.data.badge_slug}?username=${e.data.username}` : `t/topic/${e.topic_id}/${e.post_number}`}`,
        pubDate: new Date(e.created_at),
        author: e.data.display_username ?? e.data.username,
        category: [`notification_type:${e.notification_type}`, `read:${e.read}`, `high_priority:${e.high_priority}`],
        original_post_id: e.data.original_post_id,
    }));

    if (ctx.req.param('fulltext') === '1') {
        items = await Promise.all(
            items.map((e) => {
                if (e.original_post_id) {
                    const post_link = `${link}/posts/${e.original_post_id}.json`;
                    return cache.tryGet(post_link, async () => {
                        const { cooked } = await ofetch(post_link, { headers: { 'User-Api-Key': key } });
                        return { ...e, description: cooked };
                    });
                } else {
                    return e;
                }
            })
        );
    }

    const { about } = await cache.tryGet(link, async () => await ofetch(`${link}/about.json`, { headers: { 'User-Api-Key': key } }), config.cache.routeExpire, false);
    return {
        title: `${about.title} - Notifications`,
        description: about.description,
        item: items,
        allowEmpty: true,
    };
}