const db = require('quick.db')
const { icons, otherIcons } = require('../../icons')

module.exports = {
    page: '/feed',
    execute: async (req, res, app, config, themeConfig, info) => {
        if (req.query.action === 'delete') {
            const deleteFeed = req.query.feed
            if (!deleteFeed) return res.redirect('/admin?error=invalidFeed')
            if (!/^\d+$/.test(deleteFeed))
                return res.redirect('/admin?error=invalidFeed')
            if (deleteFeed !== '1' && deleteFeed !== '2' && deleteFeed !== '3')
                return res.redirect('/admin?error=invalidFeed')
            if (deleteFeed === '1') {
                if (!db.get('feeds.one'))
                    return res.redirect('/admin?error=invalidFeed')
                if (db.get('feeds.two')) {
                    const f = await db.get('feeds.two')
                    await db.set('feeds.one', {
                        color: f.color,
                        description: f.description,
                        published: f.published,
                        icon: f.icon,
                        diff: f.diff
                    })
                } else {
                    await db.delete('feeds.one')
                }
                if (db.get('feeds.three')) {
                    const f = await db.get('feeds.three')
                    await db.set('feeds.two', {
                        color: f.color,
                        description: f.description,
                        published: f.published,
                        icon: f.icon,
                        diff: f.diff
                    })
                    await db.delete('feeds.three')
                }
            } else if (deleteFeed === '2') {
                if (!db.get('feeds.two'))
                    return res.redirect('/admin?error=invalidFeed')
                if (db.get('feeds.one')) {
                    const f = await db.get('feeds.one')
                    await db.set('feeds.two', {
                        color: f.color,
                        description: f.description,
                        published: f.published,
                        icon: f.icon,
                        diff: f.diff
                    })
                    await db.delete('feeds.one')
                } else {
                    await db.delete('feeds.two')
                }
            } else if (deleteFeed === '3') {
                if (!db.get('feeds.three'))
                    return res.redirect('/admin?error=invalidFeed')
                await db.delete('feeds.three')
                if (db.get('feeds.two')) {
                    const f = await db.get('feeds.two')
                    await db.set('feeds.three', {
                        color: f.color,
                        description: f.description,
                        published: f.published,
                        icon: f.icon,
                        diff: f.diff
                    })
                }
                if (db.get('feeds.one')) {
                    const f = await db.get('feeds.one')
                    await db.set('feeds.two', {
                        color: f.color,
                        description: f.description,
                        published: f.published,
                        icon: f.icon,
                        diff: f.diff
                    })
                }
            }
            return res.redirect('/admin')
        } else if (req.query.action === 'create') {
            const { color, description, icon } = req.query
            if (!color || !description || !icon)
                return res.redirect('/admin?error=missingData')
            if (
                color !== 'red' &&
                color !== 'orange' &&
                color !== 'pink' &&
                color !== 'gray' &&
                color !== 'green' &&
                color !== 'blue' &&
                color !== 'dark'
            )
                return res.redirect('/admin?error=invalidData')
            if (description.length < 3 || description.length > 128)
                return res.redirect('/admin?error=invalidData')
            if (!icons.includes(icon) && !otherIcons.includes(icon))
                return res.redirect('/admin?error=invalidData')
            let diff
            let col
            if (otherIcons.includes(icon)) diff = true
            if (color === 'red') col = 'danger'
            if (color === 'orange') col = 'warning'
            if (color === 'pink') col = 'primary'
            if (color === 'gray') col = 'secondary'
            if (color === 'green') col = 'success'
            if (color === 'blue') col = 'info'
            if (color === 'dark') col = 'dark'
            if (
                db.get('feeds.three') &&
                db.get('feeds.two') &&
                db.get('feeds.one')
            ) {
                await db.delete('feeds.one')
                const f3 = db.get('feeds.three')
                const f2 = db.get('feeds.two')
                await db.set('feeds.two', {
                    color: f3.color,
                    description: f3.description,
                    published: f3.published,
                    icon: f3.icon,
                    diff: f3.diff
                })
                await db.set('feeds.one', {
                    color: f2.color,
                    description: f2.description,
                    published: f2.published,
                    icon: f2.icon,
                    diff: f2.diff
                })
                await db.set('feeds.three', {
                    color: col,
                    description: description,
                    published: Date.now(),
                    icon: icon,
                    diff: diff
                })
            } else {
                if (!db.get('feeds.three'))
                    await db.set('feeds.three', {
                        color: col,
                        description: description,
                        published: Date.now(),
                        icon: icon,
                        diff: diff
                    })
                else if (!db.get('feeds.two')) {
                    const f3 = db.get('feeds.three')
                    await db.set('feeds.two', {
                        color: f3.color,
                        description: f3.description,
                        published: f3.published,
                        icon: f3.icon,
                        diff: f3.diff
                    })
                    await db.set('feeds.three', {
                        color: col,
                        description: description,
                        published: Date.now(),
                        icon: icon,
                        diff: diff
                    })
                } else {
                    const f3 = db.get('feeds.three')
                    const f2 = db.get('feeds.two')
                    await db.set('feeds.one', {
                        color: f2.color,
                        description: f2.description,
                        published: f2.published,
                        icon: f2.icon,
                        diff: f2.diff
                    })
                    await db.set('feeds.two', {
                        color: f3.color,
                        description: f3.description,
                        published: f3.published,
                        icon: f3.icon,
                        diff: f3.diff
                    })
                    await db.set('feeds.three', {
                        color: col,
                        description: description,
                        published: Date.now(),
                        icon: icon,
                        diff: diff
                    })
                }
            }
            return res.redirect('/admin')
        }
    }
}