import os
import subprocess
import time
import threading
import requests
import pytest
import sys
import urllib.parse
import http.server
import socketserver

sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))


TEST_VIDEO_DIR = "/tmp/yt-dlp-test-video"
TEST_VIDEO_M3U8 = f"{TEST_VIDEO_DIR}/index.m3u8"
SERVER_PORT = 5002
TEST_HTTP_PORT = 8898


def generate_test_video():
    os.makedirs(TEST_VIDEO_DIR, exist_ok=True)

    cmd = [
        "ffmpeg", "-y", "-f", "lavfi", "-i", "testsrc=duration=5:size=320x240:rate=24",
        "-f", "lavfi", "-i", "sine=frequency=440:duration=5",
        "-c:v", "libx264", "-c:a", "aac", "-strict", "experimental",
        "-hls_time", "1", "-hls_list_size", "0",
        "-hls_segment_filename", f"{TEST_VIDEO_DIR}/segment%03d.ts",
        TEST_VIDEO_M3U8
    ]
    subprocess.run(cmd, capture_output=True, timeout=60)

    assert os.path.exists(TEST_VIDEO_M3U8), "HLS manifest not generated"
    segments = [f for f in os.listdir(TEST_VIDEO_DIR) if f.endswith(".ts")]
    assert len(segments) > 0, "No segments generated"


class QuietHTTPHandler(http.server.SimpleHTTPRequestHandler):
    def log_message(self, format, *args):
        pass


class ReusableTCPServer(socketserver.TCPServer):
    allow_reuse_address = True


def serve_test_video():
    os.chdir(TEST_VIDEO_DIR)
    with ReusableTCPServer(("127.0.0.1", TEST_HTTP_PORT), QuietHTTPHandler) as httpd:
        httpd.serve_forever()


def start_flask_app():
    import app as flask_app
    flask_app.app.run(host="127.0.0.1", port=SERVER_PORT, debug=False, use_reloader=False)


@pytest.fixture(scope="module")
def test_servers():
    print("\nGenerating test video...")
    generate_test_video()

    print(f"Starting HTTP server for test video on port {TEST_HTTP_PORT}...")
    http_thread = threading.Thread(target=serve_test_video, daemon=True)
    http_thread.start()
    time.sleep(1)

    for _ in range(10):
        try:
            requests.get(f"http://127.0.0.1:{TEST_HTTP_PORT}/", timeout=1)
            break
        except:
            time.sleep(0.5)
    print("HTTP server ready")

    print(f"Starting Flask proxy server on port {SERVER_PORT}...")
    flask_thread = threading.Thread(target=start_flask_app, daemon=True)
    flask_thread.start()
    time.sleep(2)
    print("Flask server ready")

    yield

    print("\nCleaning up...")


def test_direct_hls_access(test_servers):
    """Test that we can access the test HLS video directly"""
    response = requests.get(f"http://127.0.0.1:{TEST_HTTP_PORT}/index.m3u8", timeout=5)
    assert response.status_code == 200
    assert "#EXTM3U" in response.text
    print("Direct HLS access: OK")


def test_hls_playlist_proxy(test_servers):
    """Test proxying HLS playlist"""
    video_url = f"http://127.0.0.1:{TEST_HTTP_PORT}/index.m3u8"
    proxy_url = f"http://127.0.0.1:{SERVER_PORT}/hls?url={urllib.parse.quote(video_url, safe='')}"

    response = requests.get(proxy_url, timeout=10)
    assert response.status_code == 200
    assert "#EXTM3U" in response.text
    assert ".ts" in response.text
    print("HLS playlist proxy: OK")


def test_hls_segment_proxy(test_servers):
    """Test proxying HLS segment"""
    video_url = f"http://127.0.0.1:{TEST_HTTP_PORT}/index.m3u8"
    
    # First get the rewritten playlist to extract the segment URL
    playlist_url = f"http://127.0.0.1:{SERVER_PORT}/hls?url={urllib.parse.quote(video_url, safe='')}"
    playlist_response = requests.get(playlist_url, timeout=10)
    assert playlist_response.status_code == 200
    
    # Extract the segment path from the playlist (it's after the path= parameter)
    for line in playlist_response.text.split("\n"):
        if line.startswith("/hls?"):
            from urllib.parse import urlparse, parse_qs
            parsed = urlparse(line)
            params = parse_qs(parsed.query)
            if "path" in params:
                segment_path = params["path"][0]
                break
    
    # Now request the segment using the path from the playlist
    segment_url = f"http://127.0.0.1:{SERVER_PORT}/hls?url={urllib.parse.quote(video_url, safe='')}&path={urllib.parse.quote(segment_path, safe='')}"
    response = requests.get(segment_url, timeout=10)
    assert response.status_code == 200
    assert len(response.content) > 0
    print("HLS segment proxy: OK")


def test_player_page(test_servers):
    """Test player page renders"""
    video_url = f"http://127.0.0.1:{TEST_HTTP_PORT}/index.m3u8"
    player_url = f"http://127.0.0.1:{SERVER_PORT}/player?url={urllib.parse.quote(video_url, safe='')}"

    response = requests.get(player_url, timeout=10)
    assert response.status_code == 200
    assert "video" in response.text.lower()
    print("Player page: OK")


def test_index_page(test_servers):
    """Test index page renders"""
    response = requests.get(f"http://127.0.0.1:{SERVER_PORT}/", timeout=10)
    assert response.status_code == 200
    assert "video" in response.text.lower()
    print("Index page: OK")


@pytest.mark.skip(reason="External URL test - run manually to verify pornhub support")
def test_pornhub_hls_extraction():
    """Test that pornhub HLS URLs are extracted correctly"""
    import dlp
    dlp._session_cache.clear()
    dlp._cache_timestamps.clear()
    
    # Test with actual pornhub URL
    url = "https://rt.pornhub.com/view_video.php?viewkey=69bc20ee15710"
    hls_url = dlp.get_stream_info(url)["hls_url"]
    assert hls_url and "m3u8" in hls_url
    print(f"PornHub HLS URL: {hls_url[:100]}...")


if __name__ == "__main__":
    pytest.main([__file__, "-v", "-s"])