use pixstrip_core::operations::rename::{apply_template, resolve_collision};

#[test]
fn template_basic_variables() {
    let result = apply_template(
        "{name}_{counter:3}.{ext}",
        "sunset",
        "jpg",
        1,
        None,
    );
    assert_eq!(result, "sunset_001.jpg");
}

#[test]
fn template_with_prefix() {
    let result = apply_template(
        "blog_{name}.{ext}",
        "photo",
        "webp",
        1,
        None,
    );
    assert_eq!(result, "blog_photo.webp");
}

#[test]
fn template_counter_padding() {
    let result = apply_template(
        "{name}_{counter:4}.{ext}",
        "img",
        "png",
        42,
        None,
    );
    assert_eq!(result, "img_0042.png");
}

#[test]
fn template_counter_no_padding() {
    let result = apply_template(
        "{name}_{counter}.{ext}",
        "img",
        "png",
        42,
        None,
    );
    assert_eq!(result, "img_42.png");
}

#[test]
fn template_width_height() {
    let result = apply_template(
        "{name}_{width}x{height}.{ext}",
        "photo",
        "jpg",
        1,
        Some((1920, 1080)),
    );
    assert_eq!(result, "photo_1920x1080.jpg");
}

#[test]
fn collision_adds_suffix() {
    let dir = tempfile::tempdir().unwrap();
    let base = dir.path().join("photo.jpg");
    std::fs::write(&base, b"exists").unwrap();

    let resolved = resolve_collision(&base);
    assert_eq!(
        resolved.file_name().unwrap().to_str().unwrap(),
        "photo_1.jpg"
    );
}

#[test]
fn collision_increments() {
    let dir = tempfile::tempdir().unwrap();
    std::fs::write(dir.path().join("photo.jpg"), b"exists").unwrap();
    std::fs::write(dir.path().join("photo_1.jpg"), b"exists").unwrap();

    let resolved = resolve_collision(&dir.path().join("photo.jpg"));
    assert_eq!(
        resolved.file_name().unwrap().to_str().unwrap(),
        "photo_2.jpg"
    );
}

#[test]
fn no_collision_returns_same() {
    let dir = tempfile::tempdir().unwrap();
    let path = dir.path().join("unique.jpg");
    let resolved = resolve_collision(&path);
    assert_eq!(resolved, path);
}