//! ffmpeg 스트림(리먹스) 실기 테스트 — 사이드카가 있을 때만 실행.

use archive_media::stream::{AudioMode, StreamSpec, VideoMode};
use archive_media::PathResolver;
use std::path::{Path, PathBuf};
use std::sync::Arc;

fn ffmpeg_path() -> Option<PathBuf> {
    let bin = Path::new(env!("CARGO_MANIFEST_DIR")).join("../../binaries");
    let triple = if cfg!(all(windows, target_arch = "x86_64")) {
        "x86_64-pc-windows-msvc"
    } else if cfg!(all(windows, target_arch = "aarch64")) {
        "aarch64-pc-windows-msvc"
    } else if cfg!(all(target_os = "macos", target_arch = "aarch64")) {
        "aarch64-apple-darwin"
    } else {
        "x86_64-apple-darwin"
    };
    let ext = if cfg!(windows) { ".exe" } else { "" };
    let p = bin.join(format!("ffmpeg-{triple}{ext}"));
    p.is_file().then_some(p)
}

struct NoResolver;
#[async_trait::async_trait]
impl PathResolver for NoResolver {
    fn resolve(&self, _: i64) -> Option<PathBuf> {
        None
    }
}

fn make_mkv(ffmpeg: &Path, dir: &Path) -> PathBuf {
    let out = dir.join("입력.mkv");
    let vcodec = if cfg!(windows) { "h264_mf" } else { "h264_videotoolbox" };
    let status = std::process::Command::new(ffmpeg)
        .args([
            "-y", "-v", "error",
            "-f", "lavfi", "-i", "testsrc2=duration=3:size=320x240:rate=25",
            "-f", "lavfi", "-i", "sine=frequency=440:duration=3",
            "-c:v", vcodec, "-b:v", "300k", "-c:a", "ac3", "-shortest",
        ])
        .arg(&out)
        .status()
        .unwrap();
    assert!(status.success());
    out
}

#[tokio::test]
async fn remux_mkv_to_fmp4_stream() {
    let Some(ffmpeg) = ffmpeg_path() else {
        eprintln!("사이드카 없음 — 건너뜀");
        return;
    };
    let dir = tempfile::tempdir().unwrap();
    let mkv = make_mkv(&ffmpeg, dir.path());

    let server = archive_media::start(Arc::new(NoResolver), Some(ffmpeg)).await.unwrap();

    // MKV(h264 + ac3) → 영상 카피 + 오디오 AAC 변환 (모드 3)
    let job = server.streams.create(StreamSpec {
        input: mkv,
        start_seconds: 0.0,
        video: VideoMode::Copy,
        audio: AudioMode::Aac,
    });
    let url = server.stream_url(job);

    let res = reqwest::get(&url).await.unwrap();
    assert_eq!(res.status(), 200);
    assert_eq!(res.headers()["content-type"], "video/mp4");

    let body = res.bytes().await.unwrap();
    assert!(body.len() > 10_000, "스트림이 너무 짧음: {} bytes", body.len());
    // fMP4 시그니처: 4번째 바이트부터 'ftyp'
    assert_eq!(&body[4..8], b"ftyp", "fMP4 헤더가 아님");
    // fragmented mp4는 moof 박스를 포함
    assert!(
        body.windows(4).any(|w| w == b"moof"),
        "fragmented MP4가 아님 (moof 없음)"
    );

    server.streams.stop(job);

    // 시킹 시나리오: 1.5초 지점에서 재기동
    let job2 = server.streams.create(StreamSpec {
        input: dir.path().join("입력.mkv"),
        start_seconds: 1.5,
        video: VideoMode::Copy,
        audio: AudioMode::Aac,
    });
    let res2 = reqwest::get(server.stream_url(job2)).await.unwrap();
    assert_eq!(res2.status(), 200);
    let body2 = res2.bytes().await.unwrap();
    assert!(body2.len() > 5_000);
    assert!(body2.len() < body.len(), "1.5초 이후 스트림이 전체보다 짧아야 함");
    server.streams.stop(job2);
}