import tempfile, os
from main import build_export_path, format_time, build_ffmpeg_command
from main import _normalize_filename, ProcessedDB


def test_build_export_path_first():
    assert build_export_path("/out", "clip", 1) == "/out/clip_001.mp4"

def test_build_export_path_counter():
    assert build_export_path("/out", "clip", 42) == "/out/clip_042.mp4"

def test_build_export_path_deep_counter():
    assert build_export_path("/out", "shot", 999) == "/out/shot_999.mp4"

def test_format_time_seconds():
    assert format_time(0.0) == "0:00.0"

def test_format_time_minutes():
    assert format_time(75.3) == "1:15.2"

def test_format_time_rounding():
    assert format_time(61.05) == "1:01.0"

def test_format_time_no_sixty_rollover():
    assert format_time(59.95) == "0:59.9"


def test_ffmpeg_command():
    cmd = build_ffmpeg_command("/in/video.mp4", 12.5, "/out/clip_001.mp4")
    assert cmd[0] == "ffmpeg"
    assert "-y" in cmd
    assert "-ss" in cmd
    assert str(12.5) in cmd
    assert "-t" in cmd
    assert "8" in cmd
    assert cmd[-1] == "/out/clip_001.mp4"


# --- _normalize_filename ---

def test_normalize_strips_extension():
    assert _normalize_filename("clip.mp4") == "clip"

def test_normalize_strips_resolution():
    assert _normalize_filename("clip_2160p.mp4") == "clip"

def test_normalize_strips_1080p():
    assert _normalize_filename("clip_1080p.mkv") == "clip"

def test_normalize_strips_multiple_tags():
    assert _normalize_filename("show_1080p_HDR.mkv") == "show"

def test_normalize_lowercases():
    assert _normalize_filename("MyVideo_4K.mp4") == "myvideo"

def test_normalize_collapses_separators():
    assert _normalize_filename("my__video--2160p.mp4") == "my_video"


# --- ProcessedDB ---

def test_db_add_and_find_exact():
    with tempfile.NamedTemporaryFile(suffix=".db", delete=False) as f:
        path = f.name
    try:
        db = ProcessedDB(path)
        db.add("video.mp4")
        assert db.find_similar("video.mp4") == "video.mp4"
    finally:
        os.unlink(path)

def test_db_find_similar_resolution_variant():
    with tempfile.NamedTemporaryFile(suffix=".db", delete=False) as f:
        path = f.name
    try:
        db = ProcessedDB(path)
        db.add("episode_s01e01_2160p.mkv")
        assert db.find_similar("episode_s01e01_1080p.mkv") == "episode_s01e01_2160p.mkv"
    finally:
        os.unlink(path)

def test_db_find_similar_no_match():
    with tempfile.NamedTemporaryFile(suffix=".db", delete=False) as f:
        path = f.name
    try:
        db = ProcessedDB(path)
        db.add("alpha.mp4")
        assert db.find_similar("completely_different_zzzz.mp4") is None
    finally:
        os.unlink(path)

def test_db_disabled_survives_bad_path():
    db = ProcessedDB("/no/such/directory/8cut.db")
    db.add("x.mp4")           # must not raise
    assert db.find_similar("x.mp4") is None   # gracefully returns None