"""Isolated regression tests: python -m unittest -v test_app."""
import hashlib
import http.client
import json
import os
import tempfile
import threading
import time
import unittest
from unittest.mock import patch

_data = tempfile.TemporaryDirectory()
os.environ['VISION_DATA'] = _data.name
os.environ['VISION_RECORDINGS'] = _data.name + '/recordings'
import app
import playback


class WebTests(unittest.TestCase):
    @classmethod
    def setUpClass(cls):
        app.initialize()
        cls.server = app.ThreadingHTTPServer(('127.0.0.1', 0), app.Handler)
        cls.thread = threading.Thread(target=cls.server.serve_forever, daemon=True)
        cls.thread.start()
        app.DB.execute('INSERT INTO sessions VALUES (?,?)',
                       (hashlib.sha256(b'f' * 64).hexdigest(), time.time() + 60))
        app.DB.commit()
        app.save_object('cameras', {'id': 'a' * 16, 'name': 'Example', 'password': 'private'})

    @classmethod
    def tearDownClass(cls):
        cls.server.shutdown()
        cls.server.server_close()
        cls.thread.join()
        app.DB.close()
        _data.cleanup()

    def request(self, path, authenticated=True, data=None, origin=None):
        c = http.client.HTTPConnection(*self.server.server_address, timeout=3)
        headers = {'Cookie': 'vision=' + 'f' * 64} if authenticated else {}
        if origin:
            headers['Origin'] = origin
        if data is not None:
            headers['Content-Type'] = 'application/json'
        c.request('GET' if data is None else 'POST', path,
                  None if data is None else json.dumps(data), headers)
        r = c.getresponse()
        result = r.status, dict(r.getheaders()), r.read()
        c.close()
        return result

    def test_media_and_api_require_login(self):
        for path in ['/api/state', '/api/recordings', '/media/playback',
                     '/media/live/cam_' + 'a' * 16 + '_hd/index.m3u8']:
            with self.subTest(path=path):
                self.assertEqual(self.request(path, False)[0], 401)

    def test_static_security_headers(self):
        code, headers, _ = self.request('/', False)
        self.assertEqual(code, 200)
        self.assertEqual(headers['X-Frame-Options'], 'DENY')
        self.assertIn("frame-ancestors 'none'", headers['Content-Security-Policy'])

    def test_origin_rejected(self):
        self.assertEqual(self.request('/api/storage', data={}, origin='https://example.org')[0], 403)

    def test_invalid_ranges_and_paths(self):
        base = '/media/playback?camera=' + 'a' * 16 + '&start=2026-01-01T00:00:00Z&duration='
        for duration in ['nan', 'inf', '-1', '3601']:
            self.assertEqual(self.request(base + duration)[0], 400)
        self.assertEqual(self.request('/media/live/../../vision.db')[0], 400)
        self.assertEqual(self.request('/vision.db', False)[0], 404)

    def test_compatible_playback_dispatch(self):
        calls = []
        def compatible(handler, path, duration):
            calls.append((path, duration))
            handler.answer({'ok': True})
        with patch.object(app.Handler, 'compatible_playback', compatible):
            code, _, _ = self.request('/media/playback?camera=' + 'a' * 16 + '&start=2026-01-01T00:00:00Z&duration=10')
        self.assertEqual(code, 200)
        self.assertEqual(calls[0][1], 10)
        self.assertIn('format=fmp4', calls[0][0])

    def test_original_download_dispatch(self):
        calls = []
        def proxy(handler, port, path, download=False):
            calls.append((path, download))
            handler.answer({'ok': True})
        with patch.object(app.Handler, 'proxy', proxy):
            code, _, _ = self.request('/media/playback?camera=' + 'a' * 16 + '&start=2026-01-01T00:00:00Z&duration=10&download=1')
        self.assertEqual(code, 200)
        self.assertIn('format=mp4', calls[0][0])
        self.assertTrue(calls[0][1])

    def test_stable_object_order(self):
        app.save_object('sites', {'id': 'b', 'name': 'Second'})
        app.save_object('sites', {'id': 'a', 'name': 'First'})
        first = app.objects('sites')
        app.save_object('sites', first[0])
        self.assertEqual(app.objects('sites'), first)

    def test_password_redacted(self):
        self.assertNotIn('password', app.public_camera(app.get_object('cameras', 'a' * 16)))

    def test_playback_has_bound_and_cleanup(self):
        playback.SLOTS.acquire()
        playback.SLOTS.acquire()
        try:
            with self.assertRaises(playback.PlaybackError):
                with playback.stream('unused', 'private', 10):
                    self.fail('No third conversion allowed')
        finally:
            playback.SLOTS.release()
            playback.SLOTS.release()
        with patch('playback.shutil.which', return_value=None):
            with self.assertRaises(playback.PlaybackError):
                with playback.stream('unused', 'private', 10):
                    pass
        self.assertTrue(playback.SLOTS.acquire(blocking=False))
        playback.SLOTS.release()

    def test_vaapi_uses_supported_cqp(self):
        with patch('playback.shutil.which', return_value='ffmpeg'), patch('playback.os.access', return_value=True):
            command = playback.command('http://127.0.0.1/source', 'private', 10)
        self.assertEqual(command[command.index('-rc_mode') + 1], 'CQP')
        self.assertIn('h264_vaapi', command)
        self.assertIn('pipe:1', command)


if __name__ == '__main__':
    unittest.main()