use std::{fs::File, io::BufReader, path::PathBuf, time::Duration};

use anyhow::Error;
use clap::{Parser, Subcommand};
use futures_util::{stream, StreamExt, TryStreamExt};
use path_macro::path;
use spotifyio::{
    model::{FileId, Id, IdConstruct, IdError, PlayableId, TrackId, UserId},
    pb::AudioFileFormat,
    ApplicationCache, AuthCredentials, AuthenticationType, CdnUrl, PoolConfig, Session,
    SessionConfig, SpotifyIoPool,
};
use tracing::level_filters::LevelFilter;
use tracing_subscriber::EnvFilter;
use widevine::{Cdm, Device, Pssh};

#[derive(Parser)]
#[clap(author, version, about)]
struct Cli {
    #[clap(subcommand)]
    command: Commands,
    #[clap(long, default_value = "en")]
    lang: String,
    /// Path to Spotify account cache
    #[clap(long)]
    cache: Option<PathBuf>,
}

#[derive(Subcommand)]
enum Commands {
    /// Add an account
    Login,
    /// Remove an account
    Logout {
        /// Account ID to log out
        id: String,
    },
    /// User accounts
    Accounts,
    Track {
        id: String,
        #[clap(long)]
        key: bool,
        #[clap(long)]
        web: bool,
    },
    Album {
        id: String,
    },
    Artist {
        id: String,
    },
    Playlist {
        id: String,
    },
    User {
        id: String,
    },
    Prerelease {
        id: String,
    },
    Ratelimit {
        ids: PathBuf,
    },
    Widevine {
        id: String,
    },
    Upkeep,
    AudioFeatures {
        id: String,
    },
    AudioAnalysis {
        id: String,
    },
    Convertid {
        b64: String,
    },
}

#[tokio::main]
async fn main() -> Result<(), Error> {
    tracing_subscriber::fmt::SubscriberBuilder::default()
        .with_writer(std::io::stderr)
        .with_env_filter(
            EnvFilter::builder()
                .with_default_directive(LevelFilter::INFO.into())
                .parse("spotifyio=debug,spotifyio_cli=debug")
                .unwrap(),
        )
        .init();
    let cli = Cli::parse();

    let path = cli.cache.unwrap_or(path!(
        env!("CARGO_MANIFEST_DIR") / ".." / ".." / "data" / "spotifyio.json"
    ));
    let app_cache = ApplicationCache::new(path);

    let scfg = SessionConfig {
        language: cli.lang,
        ..Default::default()
    };
    match cli.command {
        Commands::Login => {
            let token = spotifyio::oauth::get_access_token(None).await?;
            let cache = spotifyio::oauth::new_session(&app_cache, &token.access_token).await?;
            let session = Session::new(scfg, cache);
            session
                .connect(AuthCredentials {
                    user_id: None,
                    auth_type: AuthenticationType::AUTHENTICATION_SPOTIFY_TOKEN,
                    auth_data: token.access_token.as_bytes().to_vec(),
                })
                .await?;
            println!("Logged in as <{}>", session.email().unwrap_or_default());
            println!("User ID: {}", session.user_id());
            if session.is_premium() {
                println!("Premium account");
            } else {
                println!("Free account");
            }
        }
        Commands::Logout { id } => {
            app_cache.remove_account(&id)?;
        }
        Commands::Accounts => {
            let accounts = app_cache.accounts();
            println!("{} Spotify account(s)", accounts.len());
            for account in accounts {
                println!(
                    "[{}] {}",
                    account.user_id,
                    account.email.as_deref().unwrap_or_default()
                );
            }
        }
        Commands::Track { id, key, web } => {
            let pool = SpotifyIoPool::from_app_cache(
                app_cache,
                &scfg,
                &PoolConfig {
                    max_sessions: 1,
                    ..Default::default()
                },
            )?;
            let spotify_id = parse_idstr(&id).unwrap();

            if web {
                let track = pool.spclient()?.web_track(spotify_id, None).await?;
                println!("{}", serde_json::to_string(&track).unwrap());
            } else {
                let track_et = pool.spclient()?.pb_track(spotify_id, None).await?;
                tracing::info!("ETag: {}", track_et.etag.unwrap_or_default());
                let track = track_et.data;
                println!(
                    "{}",
                    protobuf_json_mapping::print_to_string(&track).unwrap()
                );

                if key {
                    let spotify_id = TrackId::from_raw(track.gid()).unwrap();
                    println!("Track id: {}", spotify_id.id());

                    for file in &track.file {
                        println!("{} {:?}", FileId::from_raw(file.file_id())?, file.format());
                    }

                    let file = track
                        .file
                        .iter()
                        .find(|file| matches!(file.format(), AudioFileFormat::OGG_VORBIS_160))
                        .expect("audio file");
                    let file_id = FileId::from_raw(file.file_id())?;

                    let key = pool
                        .audio_key()
                        .await?
                        .request(PlayableId::Track(spotify_id), &file_id)
                        .await?;
                    println!("Audio key: {}", data_encoding::HEXLOWER.encode(&key.0));
                }
            }
        }
        Commands::Album { id } => {
            let pool = SpotifyIoPool::from_app_cache(
                app_cache,
                &scfg,
                &PoolConfig {
                    max_sessions: 1,
                    ..Default::default()
                },
            )?;

            let id = parse_idstr(&id)?;
            let album_et = pool.spclient()?.pb_album(id, None).await?;

            tracing::info!("ETag: {}", album_et.etag.unwrap_or_default());
            println!(
                "{}",
                protobuf_json_mapping::print_to_string(&album_et.data).unwrap()
            );
        }
        Commands::Artist { id } => {
            let pool = SpotifyIoPool::from_app_cache(
                app_cache,
                &scfg,
                &PoolConfig {
                    max_sessions: 1,
                    ..Default::default()
                },
            )?;

            let id = parse_idstr(&id)?;
            let artist_et = pool.spclient()?.pb_artist(id, None).await?;
            tracing::info!("ETag: {}", artist_et.etag.unwrap_or_default());
            println!(
                "{}",
                protobuf_json_mapping::print_to_string(&artist_et.data).unwrap()
            );
        }
        Commands::Playlist { id } => {
            let pool = SpotifyIoPool::from_app_cache(
                app_cache,
                &scfg,
                &PoolConfig {
                    max_sessions: 1,
                    ..Default::default()
                },
            )?;

            let id = parse_idstr(&id)?;

            let playlist = pool.spclient()?.pb_playlist(id, None).await?;
            tracing::info!("ETag: {}", playlist.etag.unwrap_or_default());
            dbg!(&playlist.data);
        }
        Commands::User { id } => {
            let pool = SpotifyIoPool::from_app_cache(
                app_cache,
                &scfg,
                &PoolConfig {
                    max_sessions: 1,
                    ..Default::default()
                },
            )?;

            let id = UserId::from_id(&id)?;
            let user = pool.spclient()?.get_user_profile(id, 20).await?;
            println!("{}", serde_json::to_string(&user).unwrap());
        }
        Commands::Prerelease { id } => {
            let pool = SpotifyIoPool::from_app_cache(
                app_cache,
                &scfg,
                &PoolConfig {
                    max_sessions: 1,
                    ..Default::default()
                },
            )?;
            let id = parse_idstr(&id)?;
            let prerelease = pool.spclient()?.gql_prerelease(id).await?;
            println!("{}", serde_json::to_string(&prerelease).unwrap());
        }
        Commands::Ratelimit { ids } => {
            let pool = SpotifyIoPool::from_app_cache(app_cache, &scfg, &PoolConfig::default())?;
            let txt = std::fs::read_to_string(ids)?;
            let ids = txt
                .lines()
                .filter_map(|line| parse_idstr(line).ok())
                .collect::<Vec<_>>();

            let client = pool.spclient()?;

            stream::iter(ids)
                .map(|id| {
                    // let pool = pool.clone();
                    let client = client.clone();
                    async move {
                        let artist = client.gql_artist_overview(id).await?;
                        if let Some(p) = artist.pre_release {
                            let prerelease = client.gql_prerelease(p.uri).await?;
                            tracing::info!(
                                "Prerelease: [{}] {}",
                                prerelease.uri,
                                prerelease.pre_release_content.name
                            );
                        }

                        // let concerts = client.gql_artist_concerts(&id).await?;
                        /*
                        for c in concerts {
                            let res = client.gql_concert(&c.uri).await;
                            match res {
                                Ok(concert) => {
                                    let loc = concert.location.map(|l| l.name).unwrap_or_default();
                                    tracing::info!("Concert: {}, {}", concert.title, loc);
                                }
                                Err(e) => if matches!(e.kind, ErrorKind::NotFound) {
                                    tracing::warn!("Concert: {} not found", id);
                                } else {
                                    return Err(e)
                                },
                            }
                        }
                        */
                        // match &res {
                        //     Ok(a) => tracing::info!("OK: [{}] {}", id, a.profile.name),
                        //     Err(e) => tracing::error!("Error: {e}"),
                        // }
                        // res
                        Ok::<_, spotifyio::Error>(())
                    }
                })
                .buffered(16)
                .try_collect::<Vec<_>>()
                .await?;
        }
        Commands::Widevine { id } => {
            let pool = SpotifyIoPool::from_app_cache(
                app_cache,
                &scfg,
                &PoolConfig {
                    max_sessions: 1,
                    ..Default::default()
                },
            )?;
            let spid = parse_idstr(&id)?;
            let track = pool.spclient()?.pb_track(spid, None).await?.data;
            let mp4_file = track
                .file
                .iter()
                .find(|f| matches!(f.format(), AudioFileFormat::MP4_128))
                .expect("mp4 file");

            let file_id = FileId::from_raw(mp4_file.file_id())?;
            let cdn_url = CdnUrl::new(file_id).resolve_audio(pool.session()?).await?;
            let url = cdn_url.try_get_url()?;
            let seektable = pool.spclient()?.get_seektable(&file_id).await?;

            // let test_key = pool.audio_key().await?.request(&spid, &file_id).await?;
            let device = Device::read_wvd(BufReader::new(File::open("/home/thetadev/test/votify/output_path/samsung_sm-a137f_16.1.1@006_6653cefd_28919_l3.wvd").unwrap())).unwrap();
            let certificate = std::fs::read("/home/thetadev/Documents/Programmieren/Rust/widevine-rs/crates/widevine/testfiles/application-certificate").unwrap();

            let cdm = Cdm::new(device);
            let pssh = Pssh::from_b64(&seektable.pssh)?;
            let lic = cdm
                .open()
                .set_service_certificate(&certificate)?
                .get_license_request(pssh, widevine::LicenseType::STREAMING)?;
            let license_message = pool
                .spclient()?
                .get_widevine_license(lic.challenge()?, false)
                .await?;
            let keys = lic.get_keys(&license_message)?;

            println!("[{}] {}", id, track.name());
            println!("{}", url.0);
            dbg!(keys);
        }
        Commands::Upkeep => {
            let pool = SpotifyIoPool::from_app_cache(
                app_cache,
                &scfg,
                &PoolConfig {
                    max_sessions: 1,
                    ..Default::default()
                },
            )?;
            pool.connect().await.unwrap();

            let stdout = console::Term::buffered_stdout();
            let spotify_id = parse_idstr::<TrackId>("4AY7RuEn7nmnxtvya5ygCt").unwrap();
            let file_id = FileId::from_base16("560ad6f0d543aa20e7851f891b4e40ba47d54b54").unwrap();

            loop {
                _ = stdout.read_char();
                match pool.audio_key_timeout(Duration::from_secs(10)).await {
                    Ok(km) => match km
                        .request(PlayableId::Track(spotify_id.as_ref()), &file_id)
                        .await
                    {
                        Ok(key) => {
                            println!("Audio key: {}", data_encoding::HEXLOWER.encode(&key.0))
                        }
                        Err(e) => tracing::error!("{e}"),
                    },
                    Err(e) => tracing::error!("{e}"),
                }
            }
        }
        Commands::AudioFeatures { id } => {
            let pool = SpotifyIoPool::from_app_cache(
                app_cache,
                &scfg,
                &PoolConfig {
                    max_sessions: 1,
                    ..Default::default()
                },
            )?;

            let track_id = parse_idstr(&id)?;
            let features = pool.spclient()?.web_track_features(track_id).await?;
            println!("{}", serde_json::to_string_pretty(&features)?);
        }
        Commands::AudioAnalysis { id } => {
            let pool = SpotifyIoPool::from_app_cache(
                app_cache,
                &scfg,
                &PoolConfig {
                    max_sessions: 1,
                    ..Default::default()
                },
            )?;

            let track_id = parse_idstr(&id)?;
            let features = pool.spclient()?.web_track_analysis(track_id).await?;
            println!("{}", serde_json::to_string_pretty(&features)?);
        }
        Commands::Convertid { b64 } => {
            let id = parse_idstr::<TrackId>(&b64)?;
            println!("{id}");
        }
    }
    Ok(())
}

fn parse_idstr<'a, T: IdConstruct<'a>>(s: &'a str) -> Result<T, IdError> {
    if s.ends_with("==") {
        let bytes = data_encoding::BASE64
            .decode(s.as_bytes())
            .map_err(|_| IdError::InvalidId)?;
        T::from_raw(&bytes)
    } else {
        T::from_id_or_uri(s)
    }
}