# -*- coding: utf-8 -*-
"""
Pytest Konfigurations- und Fixture-Datei.

Stellt gemeinsame Fixtures für alle Tests bereit, einschließlich Plugin-Tests.
"""

import asyncio
import sys
from pathlib import Path
from typing import Any, AsyncGenerator
from unittest.mock import AsyncMock, MagicMock

import pytest

# Projekt-Root zum Pfad hinzufügen
PROJECT_ROOT = Path(__file__).parent
if str(PROJECT_ROOT) not in sys.path:
    sys.path.insert(0, str(PROJECT_ROOT))


# ============================================================================
# Event Manager Fixtures
# ============================================================================

@pytest.fixture
def event_manager():
    """Erstellt einen echten EventManager für Tests."""
    from trixy_core.events.eventmanager import EventManager

    mock_app = MagicMock()
    em = EventManager(mock_app)
    return em


@pytest.fixture
def mock_event_manager():
    """Erstellt einen Mock-EventManager für isolierte Tests."""
    em = MagicMock()
    em.emit = AsyncMock()
    em.trigger = AsyncMock()
    em.register = MagicMock()
    em.on = MagicMock(return_value=lambda f: f)
    return em


# ============================================================================
# Application Fixtures
# ============================================================================

@pytest.fixture
def mock_application(mock_event_manager):
    """Erstellt eine Mock-Application für Plugin-Tests."""
    app = MagicMock()
    app.events = mock_event_manager
    app.debug = True
    app.base_path = PROJECT_ROOT

    # Extension Points Mock
    app.extension_points = {}

    return app


@pytest.fixture
def mock_plugin_path(tmp_path):
    """Erstellt einen temporären Plugin-Pfad."""
    plugin_dir = tmp_path / "test_plugin"
    plugin_dir.mkdir()
    (plugin_dir / "models").mkdir()
    return plugin_dir


# ============================================================================
# Audio Test Data Fixtures
# ============================================================================

@pytest.fixture
def sample_audio_16khz() -> bytes:
    """Generiert Sample-Audio-Daten (16kHz, 16-bit, mono, 1 Sekunde Stille)."""
    import struct

    sample_rate = 16000
    duration = 1  # 1 Sekunde
    num_samples = sample_rate * duration

    # Stille generieren (alle Nullen)
    audio_data = struct.pack(f"<{num_samples}h", *([0] * num_samples))
    return audio_data


@pytest.fixture
def sample_audio_22khz() -> bytes:
    """Generiert Sample-Audio-Daten (22.05kHz, 16-bit, mono, 1 Sekunde Stille)."""
    import struct

    sample_rate = 22050
    duration = 1
    num_samples = sample_rate * duration

    audio_data = struct.pack(f"<{num_samples}h", *([0] * num_samples))
    return audio_data


@pytest.fixture
def sample_audio_with_tone() -> bytes:
    """Generiert Sample-Audio mit einem 440Hz Ton."""
    import math
    import struct

    sample_rate = 16000
    duration = 0.5  # 0.5 Sekunden
    frequency = 440  # Hz
    amplitude = 16000  # Lautstärke

    num_samples = int(sample_rate * duration)
    samples = []

    for i in range(num_samples):
        t = i / sample_rate
        sample = int(amplitude * math.sin(2 * math.pi * frequency * t))
        samples.append(sample)

    audio_data = struct.pack(f"<{num_samples}h", *samples)
    return audio_data


# ============================================================================
# Config Fixtures
# ============================================================================

@pytest.fixture
def default_tts_config():
    """Standard TTS-Konfiguration für Tests."""
    return {
        "name": "Test TTS",
        "enabled": True,
        "language": "de-DE",
        "auto_download": False,  # Keine echten Downloads in Tests
    }


@pytest.fixture
def default_stt_config():
    """Standard STT-Konfiguration für Tests."""
    return {
        "name": "Test STT",
        "enabled": True,
        "language": "de-DE",
        "auto_download": False,  # Keine echten Downloads in Tests
    }


# ============================================================================
# Plugin Test Helpers
# ============================================================================

class PluginTestHelper:
    """Hilfsklasse für Plugin-Tests."""

    def __init__(self, application, plugin_path: Path, config: dict):
        self.application = application
        self.plugin_path = plugin_path
        self.config = config
        self.emitted_events: list[tuple[str, dict]] = []

        # Event-Emit tracken
        original_emit = application.events.emit

        async def tracking_emit(event_name, data=None):
            self.emitted_events.append((event_name, data or {}))
            return await original_emit(event_name, data)

        application.events.emit = AsyncMock(side_effect=tracking_emit)

    def get_emitted_events(self, event_name: str) -> list[dict]:
        """Gibt alle emittierten Events eines Typs zurück."""
        return [data for name, data in self.emitted_events if name == event_name]

    def assert_event_emitted(self, event_name: str, count: int = 1):
        """Prüft, ob ein Event emittiert wurde."""
        events = self.get_emitted_events(event_name)
        assert len(events) >= count, f"Expected {count} '{event_name}' events, got {len(events)}"

    def clear_events(self):
        """Löscht die Event-Historie."""
        self.emitted_events.clear()


@pytest.fixture
def plugin_test_helper(mock_application, mock_plugin_path, default_tts_config):
    """Erstellt einen PluginTestHelper."""
    return PluginTestHelper(mock_application, mock_plugin_path, default_tts_config)


# ============================================================================
# Async Helpers
# ============================================================================

@pytest.fixture
def event_loop():
    """Erstellt eine neue Event-Loop für jeden Test."""
    loop = asyncio.new_event_loop()
    yield loop
    loop.close()


# ============================================================================
# Skip Markers für bedingte Tests
# ============================================================================

def pytest_configure(config):
    """Registriert benutzerdefinierte Marker."""
    config.addinivalue_line(
        "markers", "requires_piper: Test benötigt piper-tts Installation"
    )
    config.addinivalue_line(
        "markers", "requires_vosk: Test benötigt vosk Installation"
    )
    config.addinivalue_line(
        "markers", "requires_whisper: Test benötigt openai-whisper Installation"
    )
    config.addinivalue_line(
        "markers", "requires_coqui: Test benötigt TTS (Coqui) Installation"
    )
    config.addinivalue_line(
        "markers", "requires_google_tts: Test benötigt google-cloud-texttospeech Installation"
    )
    config.addinivalue_line(
        "markers", "requires_deepspeech: Test benötigt deepspeech Installation"
    )
    config.addinivalue_line(
        "markers", "integration: Integrationstests (können langsamer sein)"
    )
    config.addinivalue_line(
        "markers", "slow: Langsame Tests"
    )


# Skip-Decorator Factories
def skip_if_no_module(module_name: str, pip_name: str = None):
    """Decorator zum Überspringen wenn ein Modul nicht installiert ist."""
    pip_name = pip_name or module_name
    try:
        __import__(module_name)
        return pytest.mark.skipif(False, reason="")
    except ImportError:
        return pytest.mark.skip(reason=f"{pip_name} nicht installiert")


# Vordefinierte Skip-Marker
requires_piper = skip_if_no_module("piper", "piper-tts")
requires_vosk = skip_if_no_module("vosk")
requires_whisper = skip_if_no_module("whisper", "openai-whisper")
requires_coqui = skip_if_no_module("TTS")
requires_google_tts = skip_if_no_module("google.cloud.texttospeech", "google-cloud-texttospeech")
requires_deepspeech = skip_if_no_module("deepspeech")