//! 성능 측정 (기본 무시). 실행:
//!   ARCHIVE_PERF_DIR=<50k폴더> cargo test -p archive-indexer --release --test perf_scan -- --ignored --nocapture

use archive_db::Db;
use std::sync::atomic::AtomicBool;
use std::sync::Arc;
use std::time::Instant;

#[test]
#[ignore]
fn scan_perf() {
    let Ok(dir) = std::env::var("ARCHIVE_PERF_DIR") else {
        eprintln!("ARCHIVE_PERF_DIR 미설정 — 건너뜀");
        return;
    };
    let dbdir = tempfile::tempdir().unwrap();
    let db = Arc::new(Db::open(&dbdir.path().join("perf.db")).unwrap());
    let root = std::path::Path::new(&dir);
    let cancel = AtomicBool::new(false);

    let dir_owned = dir.clone();
    db.with_write(move |c| {
        c.execute("INSERT INTO sources(id,kind,name,root) VALUES(1,'local','perf',?1)", [&dir_owned])?;
        Ok(())
    })
    .unwrap();

    // 1차 스캔 (전체)
    let t0 = Instant::now();
    let stats = archive_indexer::pipeline::scan_source(&db, 1, root, &cancel, |_| {}).unwrap();
    let scan1 = t0.elapsed();

    // 메타데이터
    let t1 = Instant::now();
    let meta = archive_indexer::meta::extract_image_meta(&db, 1, &cancel).unwrap();
    let meta_dur = t1.elapsed();

    // 2차 스캔 (무변경 — 스냅샷 비교)
    let t2 = Instant::now();
    let stats2 = archive_indexer::pipeline::scan_source(&db, 1, root, &cancel, |_| {}).unwrap();
    let scan2 = t2.elapsed();

    eprintln!("=== 성능 (릴리스) ===");
    eprintln!("파일 수: {}", stats.seen);
    eprintln!("1차 스캔: {:.2}s ({} added)", scan1.as_secs_f64(), stats.added);
    eprintln!("메타 추출: {:.2}s ({} 이미지)", meta_dur.as_secs_f64(), meta);
    eprintln!("무변경 재스캔: {:.2}s (added={}, changed={})", scan2.as_secs_f64(), stats2.added, stats2.changed);

    assert_eq!(stats2.added, 0);
    assert_eq!(stats2.changed, 0);
}