const config = require('@/config');
let cacheIndex = 0;

module.exports = async (ctx) => {
    if (ctx.params.id === '0') {
        throw Error('Error test');
    }
    let item = [];
    if (ctx.params.id === 'long') {
        item.push({
            title: `Long Title `.repeat(10),
            description: `Long Description `.repeat(10),
            pubDate: new Date(`2018-3-1`).toUTCString(),
            link: `https://github.com/DIYgod/RSSHub/issues/0`,
            author: `DIYgod0`,
        });
    } else if (ctx.params.id === 'cache') {
        const description = await ctx.cache.tryGet(
            'test',
            () => ({
                text: `Cache${++cacheIndex}`,
            }),
            config.cache.routeExpire * 2
        );
        item.push({
            title: 'Cache Title',
            description: description.text,
            pubDate: new Date(`2018-3-1`).toUTCString(),
            link: `https://github.com/DIYgod/RSSHub/issues/0`,
            author: `DIYgod0`,
        });
    }

    for (let i = 1; i < 6; i++) {
        item.push({
            title: `Title${i}`,
            description: `Description${i}`,
            pubDate: new Date(new Date() - i * 10 * 1000).toUTCString(),
            link: `https://github.com/DIYgod/RSSHub/issues/${i}`,
            author: `DIYgod${i}`,
        });
    }

    if (ctx.params.id === 'empty') {
        item = null;
    }

    if (ctx.params.id === 'allow_empty') {
        item = null;
    }

    if (ctx.params.id === 'enclosure') {
        item = [
            {
                title: '',
                link: 'https://github.com/DIYgod/RSSHub/issues/1',
                enclosure_url: 'https://github.com/DIYgod/RSSHub/issues/1',
                enclosure_length: 3661,
            },
        ];
    }

    if (ctx.query.mode === 'fulltext') {
        item = [
            {
                title: '',
                link: 'https://m.thepaper.cn/newsDetail_forward_4059298',
            },
        ];
    }

    ctx.state.data = {
        title: `Test ${ctx.params.id}`,
        itunes_author: ctx.params.id === 'enclosure' ? 'DIYgod' : null,
        link: 'https://github.com/DIYgod/RSSHub',
        item,
        allowEmpty: ctx.params.id === 'allow_empty',
    };
};