import Auth from "./src/helpers/auth";
import Utils from "./src/helpers/utils";

const utils = new Utils(await Auth());

Bun.serve({
    routes: {
        "/track": async (req: { url: string }) => {
            const url = new URL(req.url)

            const id = url.searchParams.get("id")

            if (!id) {
                return new Response("Missing id", { status: 400 })
            }

            const trackId = parseInt(id)

            const file = Bun.file(`downloaded/${trackId}.flac`)

            if (await file.exists()) {
                return new Response(file, {
                    headers: {
                        "Content-Type": "audio/flac",
                        "Content-Disposition": `attachment; filename="${trackId}.flac"`,
                        "Cache-Control": "public, max-age=31536000",
                        "ETag": trackId.toString(),
                    }
                })
            }

            const { manifestMimeType, manifest } = await utils.fetchTrack(parseInt(id))

            const audio = await utils.tagFlac(trackId, await utils.downloadFlac(manifestMimeType, manifest))

            await Bun.write(`downloaded/${trackId}.flac`, audio)

            return Response.json(audio, {
                headers: {
                    "Content-Type": "audio/flac",
                    "Content-Disposition": `attachment; filename="${trackId}.flac"`,
                    "Cache-Control": "public, max-age=31536000",
                    "ETag": trackId.toString(),
                }
            })
        },
        "/tracks": async () => {
            const tracks = await utils.fetchTracks();

            return Response.json(tracks);
        }
    },
    development: true
})

const tracks = await utils.fetchTracks();

for await (const track of tracks.items) {
    const { id } = track.item

    const trackId = parseInt(id)

    if (await Bun.file(`downloaded/${trackId}.flac`).exists()) {
        console.log(`Already downloaded ${trackId}.flac`)
        continue
    }

    const { manifestMimeType, manifest } = await utils.fetchTrack(parseInt(id))

    try {
        const audio = await utils.tagFlac(trackId, await utils.downloadFlac(manifestMimeType, manifest))

        await Bun.write(`downloaded/${trackId}.flac`, audio)
        console.log(`Downloaded ${trackId}.flac`)
    } catch (e) {
        console.error(`Failed to download ${trackId}.flac`)
    }
}

console.log("Done")