//! Explicit identities constrain genuine Google media retrieval, without a cosine cutoff.
use anyhow::{Context, Result};
use searchi_core::{IndexOptions, SearchIndex};
use searchi_service::{FfmpegTools, HybridSearch, MediaLimits, SearchOptions};
use std::{fs, path::Path, process::Command, sync::atomic::AtomicBool};

fn tagged_tone(ffmpeg: &Path, path: &Path, artist: &str, title: &str) -> Result<()> {
    let output = Command::new(ffmpeg)
        .args([
            "-hide_banner",
            "-loglevel",
            "error",
            "-nostdin",
            "-threads",
            "1",
            "-f",
            "lavfi",
            "-i",
            "sine=frequency=440:sample_rate=16000:duration=2",
            "-c:a",
            "pcm_s16le",
            "-metadata",
        ])
        .arg(format!("artist={artist}"))
        .arg("-metadata")
        .arg(format!("title={title}"))
        .arg(path)
        .output()?;
    anyhow::ensure!(
        output.status.success(),
        "Owned FFmpeg fixture creation failed: {}",
        String::from_utf8_lossy(&output.stderr)
    );
    Ok(())
}

#[test]
#[ignore = "Requires verified Google assets, normal native worker and FFmpeg helpers; CPU only"]
fn genuine_google_exact_music_constraints_survive_publication_and_hint_refresh() -> Result<()> {
    assert_eq!(
        std::env::var("SEARCHI_FORCE_CPU")?,
        "1",
        "VM inference must use CPU only"
    );
    let model =
        std::env::var_os("SEARCHI_GEMMA_MODEL_DIR").context("Set SEARCHI_GEMMA_MODEL_DIR")?;
    let worker = std::env::var_os("SEARCHI_GEMMA_WORKER").context("Set SEARCHI_GEMMA_WORKER")?;
    let tools = FfmpegTools {
        ffmpeg: std::env::var_os("SEARCHI_TEST_FFMPEG")
            .context("Set SEARCHI_TEST_FFMPEG")?
            .into(),
        ffprobe: std::env::var_os("SEARCHI_TEST_FFPROBE")
            .context("Set SEARCHI_TEST_FFPROBE")?
            .into(),
    };
    let temp = tempfile::tempdir()?;
    let root = temp.path().join("music");
    fs::create_dir(&root)?;
    let target = root.join("z-target.wav");
    tagged_tone(&tools.ffmpeg, &target, "Björk", "Jóga")?;
    // Identical audio is a deliberately strong distractor; identity must come from tags.
    tagged_tone(
        &tools.ffmpeg,
        &root.join("a-distractor.wav"),
        "Other Artist",
        "Björk",
    )?;
    let db = temp.path().join("index.db");
    let mut lexical = SearchIndex::open(&db)?;
    lexical.index_folder(&root)?;
    let mut indexer = HybridSearch::open(&db, &model, &worker, 1)?;
    assert_eq!(
        indexer.worker_info().context("Google worker info")?.device,
        "cpu"
    );
    let report = indexer.index_embeddings_with_media(&tools, &MediaLimits::default())?;
    assert!(report.failures.is_empty());
    assert_eq!(report.media_files, 2);
    assert_eq!(report.audio_inference_calls, 2);
    drop(indexer);
    let mut search = HybridSearch::open_query(&db, &model, &worker, 1)?;
    let options = SearchOptions {
        media_artist: Some("BJÖRK".into()),
        media_title: Some("JÓGA".into()),
        ..Default::default()
    };
    let metadata = search.search_measured("", 1, &options, true)?;
    assert_eq!(metadata.results.len(), 1);
    assert_eq!(metadata.results[0].filename, "z-target.wav");
    assert!(!metadata
        .metrics
        .trace
        .context("debug trace")?
        .iter()
        .any(|span| span.name == "semantic.query_embedding"));
    let query = "the sound of a sine wave tone";
    let semantic = search.search_semantic(query, 1, &options)?;
    assert_eq!(semantic.len(), 1);
    assert_eq!(semantic[0].filename, "z-target.wav");
    assert_eq!(
        search.search(query, 1, &options)?[0].filename,
        "z-target.wav"
    );
    let absent = SearchOptions {
        media_artist: Some("Absent Artist".into()),
        ..Default::default()
    };
    assert!(search.search(query, 1, &absent)?.is_empty());
    assert!(search.search("", 1, &absent)?.is_empty());
    let collision = SearchOptions {
        media_artist: Some("Jóga".into()),
        ..Default::default()
    };
    assert!(search.search(query, 1, &collision)?.is_empty());
    // A native same-stat hint invalidates old tags and warmed ANN eligibility.
    let canonical = target.canonicalize()?;
    lexical.index_paths_cancellable(
        &root,
        std::slice::from_ref(&canonical),
        &IndexOptions::default(),
        &AtomicBool::new(false),
    )?;
    assert!(search.search("", 1, &options)?.is_empty());
    assert!(search.search_semantic(query, 1, &options)?.is_empty());
    let mut indexer = HybridSearch::open(&db, &model, &worker, 1)?;
    let refreshed = indexer.index_embeddings_with_media(&tools, &MediaLimits::default())?;
    assert!(refreshed.failures.is_empty());
    drop(indexer);
    assert_eq!(search.search("", 1, &options)?[0].filename, "z-target.wav");
    assert_eq!(
        search.search_semantic(query, 1, &options)?[0].filename,
        "z-target.wav"
    );
    // Deletion is suppressed without retaining an exact identity match.
    fs::remove_file(&target)?;
    lexical.index_folder(&root)?;
    assert!(search.search("", 1, &options)?.is_empty());
    assert!(search.search_semantic(query, 1, &options)?.is_empty());
    Ok(())
}