lyrics-search 0.1.4

use super::response::{LyricsResponse, SubtitleResponse, TokenResponse, TrackResponse};
use crate::providers::web::base_api;

const BASE_URL: &str = "https://apic-desktop.musixmatch.com/ws/1.1";

fn headers() -> Vec<(&'static str, &'static str)> {
    vec![
        ("Authority", "apic-desktop.musixmatch.com"),
        ("Cookie", "AWSELBCORS=0; AWSELB=0"),
    ]
}

/// 获取 Musixmatch 用户令牌（用于后续 API 调用）。
pub async fn get_token() -> Option<String> {
    let url = format!("{}/token.get?app_id=web-desktop-app-v1.0", BASE_URL);
    let resp: TokenResponse = base_api::get_json_with_headers(&url, &headers()).await?;
    resp.message?.body?.user_token
}

pub(crate) async fn search_track(
    q_track: &str,
    q_artist: &str,
    user_token: &str,
) -> Option<TrackResponse> {
    let url = format!(
        "{}/matcher.track.get?app_id=web-desktop-app-v1.0&usertoken={}&q_track={}&q_artist={}",
        BASE_URL,
        user_token,
        urlencoding::encode(q_track),
        urlencoding::encode(q_artist),
    );
    base_api::get_json_with_headers(&url, &headers()).await
}

/// 获取 Musixmatch 非同步歌词文本。
pub async fn get_lyrics(track_id: i64, user_token: &str) -> Option<String> {
    let url = format!(
        "{}/track.lyrics.get?app_id=web-desktop-app-v1.0&usertoken={}&track_id={}",
        BASE_URL, user_token, track_id
    );
    let resp: LyricsResponse = base_api::get_json_with_headers(&url, &headers()).await?;
    resp.message?.body?.lyrics?.lyrics_body
}

/// 获取 Musixmatch 同步歌词（LRC 格式）。
pub async fn get_synced_lyrics(track_id: i64, user_token: &str) -> Option<String> {
    let url = format!(
        "{}/track.subtitle.get?app_id=web-desktop-app-v1.0&usertoken={}&track_id={}&subtitle_format=lrc",
        BASE_URL, user_token, track_id
    );
    let resp: SubtitleResponse = base_api::get_json_with_headers(&url, &headers()).await?;
    resp.message?.body?.subtitle?.subtitle_body
}