/*
 * Beefweb <-> mpris "compatibility" layer.
 *
 * Copyright (C) 2026 Paper
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see
 * <https://www.gnu.org/licenses/>.
*/

use crate::beefweb;

use zbus::fdo;
use zbus::Result;
use std::collections::HashMap;
use std::io::Write;
use std::cell::RefCell;

/* teehee */
pub struct BeefwebPlayer {
	bw: beefweb::Beefweb,
	artcache: String,
	/* artmap
	 *  key: %path% column from beefweb
	 *  value: local path of the artwork
	 * also LOL RUST FUCK */
	artmap: RefCell<HashMap<String, String>>,
}

impl BeefwebPlayer {
	pub fn new(base: &str, artcache: &str) -> BeefwebPlayer
	{
		return BeefwebPlayer {
			bw: beefweb::Beefweb::new(base),
			artcache: artcache.to_string(),
			artmap: RefCell::new(HashMap::new()),
		};
	}

/*
	async fn get_artwork(&self, playlist_id: &str, index: i64, path: &str) -> fdo::Result<String>
	{
		match self.artmap.borrow().get(path) {
			Some(x) => return Ok(x.to_string()),
			_       => (),
		}

		/* Ok, art path isn't in the "cache". Ask beefweb for it. */
		let art = self.bw.artwork(playlist_id, index);
		let artpath = format!("{}/{}", self.artcache, uuid::Uuid::new_v4());

		/* XXX might be a good idea to check the bytes for an extension...? */
		let fr = std::fs::OpenOptions::new()
			.write(true)
			.open(&artpath);

		match fr {
			Err(_) => return Err(fdo::Error::Failed("Failed to open file!".to_string())),
			_      => (),
		};

		let mut f = fr.unwrap();

		let artaw = art.await;

		match artaw {
			Err(_) => return Err(fdo::Error::Failed("Uh oh".to_string())),
			_      => (),
		};

		f.write(artaw.unwrap().as_ref());

		self.artmap.borrow_mut().insert(path.to_string(), artpath.to_string());

		return Ok(artpath);
	}
*/
}

fn secs_to_time(x: f64) -> mpris_server::Time
{
	return mpris_server::Time::from_micros((x * 1000000.0).round() as i64);
}

fn time_to_secs(x: mpris_server::Time) -> f64
{
	return (x.as_micros() as f64) / 1000000.0;
}

impl mpris_server::LocalRootInterface for BeefwebPlayer {
	async fn raise(&self) -> fdo::Result<()>
	{
		/* don't care */
		return Ok(());
	}

	async fn quit(&self) -> fdo::Result<()>
	{
		/* don't care */
		return Ok(());
	}

	async fn can_quit(&self) -> fdo::Result<bool>
	{
		/* don't care */
		return Ok(false);
	}

	async fn fullscreen(&self) -> fdo::Result<bool>
	{
		/* don't care */
		return Ok(false);
	}

	async fn set_fullscreen(&self, _fullscreen: bool) -> Result<()>
	{
		/* don't care */
		return Ok(());
	}

	async fn can_set_fullscreen(&self) -> fdo::Result<bool>
	{
		return Ok(false);
	}

	async fn can_raise(&self) -> fdo::Result<bool>
	{
		return Ok(false);
	}

	async fn has_track_list(&self) -> fdo::Result<bool>
	{
		/* ??? */
		return Ok(false);
	}

	async fn identity(&self) -> fdo::Result<String>
	{
		/* TODO: allow changing this */
		return Ok("beefweb".into());
	}

	async fn desktop_entry(&self) -> fdo::Result<String>
	{
		return Ok("foobar2000".into());
	}

	async fn supported_uri_schemes(&self) -> fdo::Result<Vec<String>>
	{
		return Ok([].to_vec());
	}

	async fn supported_mime_types(&self) -> fdo::Result<Vec<String>>
	{
		/* needs moar */
		return Ok([].to_vec());
	}
}

impl mpris_server::LocalPlayerInterface for BeefwebPlayer {
	async fn next(&self) -> fdo::Result<()>
	{
		self.bw.next().await;
		return Ok(());
	}

	async fn previous(&self) -> fdo::Result<()>
	{
		self.bw.previous().await;
		return Ok(());
	}

	async fn pause(&self) -> fdo::Result<()>
	{
		self.bw.pause().await;
		return Ok(());
	}

	async fn play_pause(&self) -> fdo::Result<()>
	{
		self.bw.play_pause().await;
		return Ok(());
	}

	async fn stop(&self) -> fdo::Result<()>
	{
		self.bw.stop().await;
		return Ok(());
	}

	async fn play(&self) -> fdo::Result<()>
	{
		self.bw.play().await;
		return Ok(());
	}

	async fn seek(&self, offset: mpris_server::Time) -> fdo::Result<()>
	{
		let pl = self.bw.set_position(time_to_secs(offset)).await;

		match pl {
			Err(_) => return Err(fdo::Error::Failed("uhoh".to_string())),
			_      => (),
		};

		return Ok(());
	}

	async fn position(&self) -> fdo::Result<mpris_server::Time>
	{
		let pl = self.bw.player().await;

		match pl {
			Err(_) => return Err(fdo::Error::Failed("uhoh".to_string())),
			_      => (),
		};

		return Ok(secs_to_time(pl.unwrap().active_item.position));
	}

	async fn playback_status(&self) -> fdo::Result<mpris_server::PlaybackStatus>
	{
		let p = self.bw.player().await;

		match p {
			Err(_) => return Err(fdo::Error::Failed("wtf".to_string())),
			_      => (),
		};

		return match p.unwrap().playback_state.as_str() {
			"playing" => Ok(mpris_server::PlaybackStatus::Playing),
			"stopped" => Ok(mpris_server::PlaybackStatus::Stopped),
			"paused"  => Ok(mpris_server::PlaybackStatus::Paused),
			_         => Err(fdo::Error::Failed("deez nuts".to_string())),
		};
	}

	async fn loop_status(&self) -> fdo::Result<mpris_server::LoopStatus>
	{
		return Ok(mpris_server::LoopStatus::None);
	}

	async fn set_loop_status(&self, loop_status: mpris_server::LoopStatus) -> Result<()>
	{
		return Ok(());
	}

	async fn shuffle(&self) -> fdo::Result<bool>
	{
		/* TODO */
		println!("Shuffle");
		return Ok(false);
	}

	async fn set_shuffle(&self, shuffle: bool) -> Result<()>
	{
		/* TODO */
		println!("SetShuffle({shuffle})");
		return Ok(());
	}

	async fn metadata(&self) -> fdo::Result<mpris_server::Metadata>
	{
		let pl = self.bw.player().await;

		match pl {
			Err(_) => return Err(fdo::Error::Failed("uhoh".to_string())),
			_      => (),
		};

		let p = pl.unwrap();

		let playlist_items_result = self.bw.playlist_items(p.active_item.playlist_id.as_str(), p.active_item.index, 1, ["%title%", "%artist%", "%album%", "%discnumber%", "%tracknumber%", "%album artist%", "%path%"].to_vec()).await;

		match playlist_items_result {
			Err(_) => return Err(fdo::Error::Failed("uhoh".to_string())),
			_      => (),
		};

		let playlist_items = playlist_items_result.unwrap();

		let track = playlist_items.items.get(0).unwrap();

/*
		let artwork = self.get_artwork(p.active_item.playlist_id.as_str(), p.active_item.index, track.columns.get(6).unwrap());
*/

		let builder = mpris_server::Metadata::builder()
			.length(secs_to_time(p.active_item.duration))
			.album(track.columns.get(2).unwrap())
			.artist([track.columns.get(1).unwrap()])
			.disc_number(track.columns.get(3).unwrap().parse::<i32>().unwrap())
			.track_number(track.columns.get(4).unwrap().parse::<i32>().unwrap())
			.title(track.columns.get(0).unwrap())
			.album_artist([track.columns.get(5).unwrap()]);

/*
		return match artwork.await {
			Ok(x) => Ok(builder.art_url(urlencoding::encode(format!("file://{}", x).as_str())).build()),
			_     => Ok(builder.build()),
		};
*/
		return Ok(builder.build());
	}

	async fn volume(&self) -> fdo::Result<mpris_server::Volume>
	{
		return Ok(mpris_server::Volume::default());
	}

	async fn set_volume(&self, volume: mpris_server::Volume) -> Result<()>
	{
		return Ok(());
	}

	/* "can" functions -- all work */

	async fn can_go_next(&self) -> fdo::Result<bool>
	{
		return Ok(true);
	}

	async fn can_go_previous(&self) -> fdo::Result<bool>
	{
		return Ok(true);
	}

	async fn can_play(&self) -> fdo::Result<bool>
	{
		return Ok(true);
	}

	async fn can_pause(&self) -> fdo::Result<bool>
	{
		return Ok(true);
	}

	async fn can_seek(&self) -> fdo::Result<bool>
	{
		return Ok(true);
	}

	async fn can_control(&self) -> fdo::Result<bool>
	{
		return Ok(true);
	}

	/* --- UNSUPPORTED */

	async fn rate(&self) -> fdo::Result<mpris_server::PlaybackRate>
	{
		return Ok(mpris_server::PlaybackRate::default());
	}

	async fn set_rate(&self, rate: mpris_server::PlaybackRate) -> Result<()>
	{
		return Ok(());
	}

	async fn minimum_rate(&self) -> fdo::Result<mpris_server::PlaybackRate>
	{
		return Ok(mpris_server::PlaybackRate::default());
	}

	async fn maximum_rate(&self) -> fdo::Result<mpris_server::PlaybackRate>
	{
		return Ok(mpris_server::PlaybackRate::default());
	}

	/* WTF is this supposed to do?  --paper */
	async fn set_position(&self, track_id: mpris_server::TrackId, position: mpris_server::Time) -> fdo::Result<()>
	{
		return Ok(());
	}

	/* Beefweb doesn't really have this, and it would be
	 * pointless anyway, unless we used winepath */
	async fn open_uri(&self, uri: String) -> fdo::Result<()>
	{
		return Ok(());
	}
}