// @ts-check

const fs = require("fs")
const os = require("os")
const {tag} = require("@cloudrac3r/html-template-tag")

const collection = JSON.parse(fs.readFileSync("scripts/collection.json", "utf8"))

const table = collection.items.map(item => {
	const artist = item.band_name.replace(/[:,/[\]]/g, "-")
	const title = item.item_title.replace(/[:/|[\]]/g, "-").replace(/^[-.]+|-+$/g, "").replace(/--+/g, "-").replaceAll("\u3000", " ")
	const file = `${artist} - ${title}`
	const exists = fs.existsSync(`/var/home/cadence/Music/${file}`)
		|| fs.existsSync(`/var/home/cadence/Music/${artist}/${file}.mp3`)
	const saleID = `${item.sale_item_type}${item.sale_item_id}`
	const url = collection.redownload_urls[saleID]
	return {
		subdomain: item.url_hints.subdomain,
		exists: exists ? "✅ " : "",
		file: file,
		url
	}
})

table.sort((a, b) => {
	if (a.file < b.file) return -1
	else if (a.file === b.file) return 0
	else return 1
})

const labels = Object.groupBy(table, x => x.subdomain)

const file = process.cwd() + "/download-selector.html"
const o = fs.createWriteStream(file, "utf8")
o.write(tag`<style>ul { list-style-type: none; }</style>`)

o.write(tag`<ul>`)
for (const [label, items] of Object.entries(labels).sort(([a], [b]) => {
	if (a < b) return -1
	else if (a === b) return 0
	else return 1
})) {
	const labelCompleted = items?.every(item => item.exists) ? "✅ " : ""
	o.write(tag`<li style='list-style-type: "${labelCompleted}"'><details><summary>${label}</summary><ul>`)
	if (items) {
		for (const item of items) {
			o.write(tag`<li style='list-style-type: "${item.exists}"'><a href="${item.url}">${item.file}</a></li>`)
		}
	}
	o.write(tag`</ul></details></li>`)
}
o.write(tag`</ul>`)

o.close()

console.log(`Wrote: file://${file}`)