const config = require('../config.js')
const db = require('knex')(config.database)
const randomstring = require('randomstring')
const utils = require('./utilsController.js')
const path = require('path')

let albumsController = {}

albumsController.list = function(req, res, next) {

	let token = req.headers.token
	if (token === undefined) return res.status(401).json({ success: false, description: 'No token provided' })

	db.table('users').where('token', token).then((user) => {
		if (user.length === 0) return res.status(401).json({ success: false, description: 'Invalid token' })

		let fields = ['id', 'name']

		if (req.params.sidebar === undefined) {
			fields.push('timestamp')
			fields.push('identifier')
		}

		db.table('albums').select(fields).where({ enabled: 1, userid: user[0].id }).then((albums) => {

			if (req.params.sidebar !== undefined)
				return res.json({ success: true, albums })

			let ids = []
			for (let album of albums) {
				album.date = new Date(album.timestamp * 1000)
				album.date = utils.getPrettyDate(album.date) // album.date.getFullYear() + '-' + (album.date.getMonth() + 1) + '-' + album.date.getDate() + ' ' + (album.date.getHours() < 10 ? '0' : '') + album.date.getHours() + ':' + (album.date.getMinutes() < 10 ? '0' : '') + album.date.getMinutes() + ':' + (album.date.getSeconds() < 10 ? '0' : '') + album.date.getSeconds()

				let basedomain = req.get('host')
				for (let domain of config.domains)
					if (domain.host === req.get('host'))
						if (domain.hasOwnProperty('resolve'))
							basedomain = domain.resolve

				album.identifier = basedomain + '/a/' + album.identifier

				ids.push(album.id)
			}

			db.table('files').whereIn('albumid', ids).select('albumid').then((files) => {

				let albumsCount = {}

				for (let id of ids) albumsCount[id] = 0
				for (let file of files) albumsCount[file.albumid] += 1
				for (let album of albums) album.files = albumsCount[album.id]

				return res.json({ success: true, albums })
			}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })
		}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })
	}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })

}

albumsController.create = function(req, res, next) {
	let token = req.headers.token
	if (token === undefined) return res.status(401).json({ success: false, description: 'No token provided' })

	db.table('users').where('token', token).then((user) => {
		if (user.length === 0) return res.status(401).json({ success: false, description: 'Invalid token' })

		let name = req.body.name
		if (name === undefined || name === '')
			return res.json({ success: false, description: 'No album name specified' })

		db.table('albums').where({
			name: name,
			enabled: 1,
			userid: user[0].id
		}).then((album) => {
			if (album.length !== 0) return res.json({ success: false, description: 'There\'s already an album with that name' })

			db.table('albums').insert({
				name: name,
				enabled: 1,
				userid: user[0].id,
				identifier: randomstring.generate(8),
				timestamp: Math.floor(Date.now() / 1000)
			}).then(() => {
				return res.json({ success: true })
			})
		}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })
	}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })

}

albumsController.delete = function(req, res, next) {
	let token = req.headers.token
	if (token === undefined) return res.status(401).json({ success: false, description: 'No token provided' })

	db.table('users').where('token', token).then((user) => {
		if (user.length === 0) return res.status(401).json({ success: false, description: 'Invalid token'})

		let id = req.body.id
		if (id === undefined || id === ''){
			return res.json({ success: false, description: 'No album specified' })
		}

		db.table('albums').where({ id: id, userid: user[0].id }).update({ enabled: 0 }).then(() => {
			return res.json({ success: true })
		}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })
	}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })
}

albumsController.rename = function(req, res, next) {
	let token = req.headers.token
	if (token === undefined) return res.status(401).json({ success: false, description: 'No token provided' })

	db.table('users').where('token', token).then((user) => {
		if (user.length === 0) return res.status(401).json({ success: false, description: 'Invalid token'})

		let id = req.body.id
		if (id === undefined || id === '')
			return res.json({ success: false, description: 'No album specified' })

		let name = req.body.name
		if (name === undefined || name === '')
			return res.json({ success: false, description: 'No name specified' })

		db.table('albums').where({ name: name, userid: user[0].id }).then((results) => {
			if (results.length !== 0) return res.json({ success: false, description: 'Name already in use' })

			db.table('albums').where({ id: id, userid: user[0].id }).update({ name: name }).then(() => {
				return res.json({ success: true })
			}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })
		}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })
	}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })

}

albumsController.get = function(req, res, next) {
	let identifier = req.params.identifier
	if (identifier === undefined) return res.status(401).json({ success: false, description: 'No identifier provided' })

	db.table('albums')
	.where('identifier', identifier)
	.then((albums) => {
		if (albums.length === 0) return res.json({ success: false, description: 'Album not found' })

		let title = albums[0].name
		db.table('files').select('name').where('albumid', albums[0].id).orderBy('id', 'DESC').then((files) => {

			let basedomain = req.get('host')
			for (let domain of config.domains)
				if (domain.host === req.get('host'))
					if (domain.hasOwnProperty('resolve'))
						basedomain = domain.resolve

			for (let file of files) {
				file.file = basedomain + '/' + file.name

				let ext = path.extname(file.name).toLowerCase()
				if (utils.extensions.includes(ext)) {
					file.thumb = basedomain + '/thumbs/' + file.name.slice(0, -ext.length) + '.png'
					utils.generateThumbs(file)
				}
			}

			return res.json({
				success: true,
				title: title,
				count: files.length,
				files
			})

		}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })
	}).catch(function(error) { console.log(error); res.json({ success: false, description: 'error' }) })
}

module.exports = albumsController