const Data = require('./Data')
const Image = require('./Image')
const ImageArtifactType = require('./ImageArtifactType')
const {find, findOne} = require('../lib/store')

const previewTypes = [
	ImageArtifactType.SMALL,
	ImageArtifactType.MEDIUM,
	ImageArtifactType.BIG,
	ImageArtifactType.ORIGIN,
]
const store = () => Data.getStore(Album)

class Album {
	static async find(query, options = {}) {
		const items = await find(store(), query, options)

		return Promise.all(items.map(processAlbum))
	}

	static async findById(id) {
		const item = await findOne(store(), {id})

		return !item
			? null
			: processAlbum(item)
	}
}

const previewFromImage = (imgs = []) => imgs.length
	? imgs[0]
	: null

const processAlbum = async album => {
	let preview = {}
    // {
    // 	data: [
    // 		{
    // 			url: null,
    // 			width: 0,
    // 			height: 0,
    // 		}
    // 	]
    // }

	const previewImageId = album.preview ? album.preview : previewFromImage(album.images)
	if (previewImageId) {
		const image = await Image.findById(previewImageId)
		if (image) {
            // const imageArtifacts = image.findArtifact(previewTypes)
            // if (imageArtifacts) {
            // 	preview = imageArtifacts
            // }
			preview = image.getPicture(ImageArtifactType.SMALL)
		}
	}

	return {
		...album,
		preview,
		url: `/album/${album.id}`,
	}
}

module.exports = Album