//! Benchmarks for MovieMapper

use criterion::{black_box, criterion_group, criterion_main, Criterion};
use movie_mapper::service::file_mapper::FileMapper;
use movie_mapper::service::file_metadata::MetadataExtractor;
use movie_mapper::service::file_scanner::FileScanner;
use std::fs::File;
use tempfile::tempdir;

fn bench_file_scanner(c: &mut Criterion) {
    let temp_dir = tempdir().unwrap();

    // Create test files
    for i in 0..100 {
        let file_path = temp_dir.path().join(format!("video{}.mp4", i));
        File::create(&file_path).unwrap();
    }

    let scanner = FileScanner::new();

    c.bench_function("scan_directory_100_files", |b| {
        b.to_async(tokio::runtime::Runtime::new().unwrap())
            .iter(|| async {
                let _ = scanner.scan_directory(temp_dir.path(), None).await;
            });
    });

    // With progress callback
    c.bench_function("scan_directory_with_callback", |b| {
        b.to_async(tokio::runtime::Runtime::new().unwrap())
            .iter(|| async {
                let mut progress_count = 0;
                let mut callback = |_: usize, _: usize, _: &str| {
                    progress_count += 1;
                };
                let _ = scanner
                    .scan_directory(temp_dir.path(), Some(&mut callback))
                    .await;
            });
    });
}

fn bench_metadata_extraction(c: &mut Criterion) {
    let temp_dir = tempdir().unwrap();

    // Create test files
    let file_path = temp_dir.path().join("test.mp4");
    File::create(&file_path).unwrap();

    let extractor = MetadataExtractor::new();

    c.bench_function("extract_metadata", |b| {
        b.iter(|| {
            let _ = extractor.extract_metadata(black_box(&file_path));
        });
    });

    c.bench_function("extract_duration", |b| {
        b.iter(|| {
            let _ = extractor.extract_duration(black_box(&file_path));
        });
    });

    c.bench_function("extract_quality", |b| {
        b.iter(|| {
            let _ = extractor.extract_quality(black_box(&file_path));
        });
    });
}

fn bench_file_mapper(c: &mut Criterion) {
    let temp_dir = tempdir().unwrap();

    // Create test files
    let mut files = Vec::new();
    for i in 0..50 {
        let file_path = temp_dir.path().join(format!("video{}.mp4", i));
        File::create(&file_path).unwrap();
        files.push(movie_mapper::model::file::MediaFile::from_path(file_path));
    }

    let mapper = FileMapper::new();

    c.bench_function("generate_jellyfin_filename", |b| {
        b.iter(|| {
            let _ = mapper.generate_jellyfin_filename(
                black_box("Show Name"),
                black_box(1),
                black_box(1),
                black_box(1),
                black_box("1080p"),
                black_box(".mp4"),
            );
        });
    });

    c.bench_function("map_files_50", |b| {
        b.to_async(tokio::runtime::Runtime::new().unwrap())
            .iter(|| async {
                let _ = mapper
                    .map_files(
                        black_box(&files),
                        black_box("Show Name"),
                        black_box(1),
                        black_box(None),
                    )
                    .await;
            });
    });
}

fn bench_tag_manager(c: &mut Criterion) {
    let temp_dir = tempdir().unwrap();

    // Create test files
    let mut tag_manager = movie_mapper::service::tag_manager::TagManager::new();

    // Add many tags
    for i in 0..100 {
        let file_path = temp_dir.path().join(format!("video{}.mp4", i));
        File::create(&file_path).unwrap();
        tag_manager.add_tag(&file_path, "extra").unwrap();
    }

    c.bench_function("add_tag", |b| {
        b.iter(|| {
            let temp_dir = tempdir().unwrap();
            let file_path = temp_dir.path().join("test.mp4");
            let mut manager = movie_mapper::service::tag_manager::TagManager::new();
            let _ = manager.add_tag(black_box(&file_path), black_box("extra"));
        });
    });

    c.bench_function("has_tag", |b| {
        b.iter(|| {
            let _ = tag_manager.has_tag(
                black_box(&temp_dir.path().join("video1.mp4")),
                black_box("extra"),
            );
        });
    });

    c.bench_function("get_tags", |b| {
        b.iter(|| {
            let _ = tag_manager.get_tags(black_box(&temp_dir.path().join("video1.mp4")));
        });
    });

    c.bench_function("move_tagged_files", |b| {
        b.to_async(tokio::runtime::Runtime::new().unwrap())
            .iter(|| async {
                let temp_dir = tempdir().unwrap();
                let mut manager = movie_mapper::service::tag_manager::TagManager::new();
                let file_path = temp_dir.path().join("test.mp4");
                File::create(&file_path).unwrap();
                manager.add_tag(&file_path, "extra").unwrap();

                let target_folder = temp_dir.path().join("target");
                let _ = manager
                    .move_tagged_files(black_box("extra"), black_box(&target_folder))
                    .await;
            });
    });
}

fn bench_audit_logger(c: &mut Criterion) {
    let temp_dir = tempdir().unwrap();
    let logger =
        movie_mapper::service::audit_logger::AuditLogger::new(temp_dir.path().to_str().unwrap());

    c.bench_function("log_event", |b| {
        b.iter(|| {
            let action = movie_mapper::service::audit_logger::AuditAction::DirectorySelected {
                path: "/test/path".to_string(),
            };
            let _ = logger.log_event(black_box(action));
        });
    });
}

criterion_group!(
    benches,
    bench_file_scanner,
    bench_metadata_extraction,
    bench_file_mapper,
    bench_tag_manager,
    bench_audit_logger,
);

criterion_main!(benches);