"""
Shared pytest fixtures for backend tests.
"""

import json
import os
from datetime import timedelta
from unittest.mock import AsyncMock, Mock, patch

import pytest
from fastapi.testclient import TestClient

# Set up environment variables before any imports during pytest collection
os.environ.setdefault("SECRET_KEY", "test-secret-key-at-least-32-chars-long")
os.environ.setdefault("ADMIN_USER", "testadmin")
os.environ.setdefault("ADMIN_PASSWORD_HASH", "$pbkdf2-sha256$29000$N2YMIQQgBAAgxBgjhPD.vw$1234567890abcdef")
os.environ.setdefault("VOLUME_ROOT", "/tmp/test-volume")
os.environ.setdefault("DOCKER_HOST", "tcp://mock-docker:2375")
os.environ.setdefault("GITEA_URL", "http://mock-gitea:3000")
os.environ.setdefault("GITEA_TOKEN", "mock-token")


@pytest.fixture
def temp_volume_root(tmp_path):
    """Create temporary volume root for testing."""
    volume_root = tmp_path / "volume1"
    volume_root.mkdir()
    (volume_root / "docker" / "nas-dashboard").mkdir(parents=True)
    return str(volume_root)


@pytest.fixture
def mock_config(temp_volume_root, monkeypatch):
    """Mock config module with test values."""
    monkeypatch.setenv("SECRET_KEY", "test-secret-key-at-least-32-chars-long")
    monkeypatch.setenv("ADMIN_USER", "testadmin")
    monkeypatch.setenv("ADMIN_PASSWORD_HASH", "$pbkdf2-sha256$29000$N2YMIQQgBAAgxBgjhPD.vw$1234567890abcdef")
    monkeypatch.setenv("VOLUME_ROOT", temp_volume_root)
    monkeypatch.setenv("DOCKER_HOST", "tcp://mock-docker:2375")
    monkeypatch.setenv("GITEA_URL", "http://mock-gitea:3000")
    monkeypatch.setenv("GITEA_TOKEN", "mock-token")

    # Reload config module to pick up new env vars
    import importlib

    import config

    importlib.reload(config)

    return config


@pytest.fixture
def temp_auth_file(temp_volume_root):
    """Create temporary auth.json file."""
    auth_file = os.path.join(temp_volume_root, "docker/nas-dashboard/auth.json")
    data = {"totp_secret": "", "passkey_credentials": [], "token_version": 0, "last_totp_ts": 0}
    with open(auth_file, "w") as f:
        json.dump(data, f)
    return auth_file


@pytest.fixture
def temp_rbac_file(temp_volume_root):
    """Create temporary rbac.json file."""
    rbac_file = os.path.join(temp_volume_root, "docker/nas-dashboard/rbac.json")
    data = {
        "role_defaults": {
            "admin": {"pages": "*", "sidebar_links": "*"},
            "member": {"pages": ["dashboard", "docker"], "sidebar_links": "*"},
            "viewer": {"pages": ["dashboard"], "sidebar_links": ["dashboard"]},
        },
        "user_overrides": {},
    }
    with open(rbac_file, "w") as f:
        json.dump(data, f)
    return rbac_file


@pytest.fixture
def valid_access_token(mock_config):
    """Generate a valid access token for testing."""
    from auth_service import create_access_token

    return create_access_token(data={"sub": "testuser", "role": "admin"}, expires_delta=timedelta(minutes=30))


@pytest.fixture
def valid_refresh_token(mock_config, temp_auth_file):
    """Generate a valid refresh token for testing."""
    from auth_service import create_refresh_token

    return create_refresh_token(data={"sub": "testuser", "role": "admin"})


@pytest.fixture
def expired_access_token(mock_config):
    """Generate an expired access token for testing."""
    from auth_service import create_access_token

    return create_access_token(data={"sub": "testuser", "role": "admin"}, expires_delta=timedelta(seconds=-1))


@pytest.fixture
def mock_docker_client():
    """Mock Docker client for testing.

    Returns a mock client with a single running container.
    For error scenarios, use mock_docker_client_with_errors.
    """
    client = Mock()

    # Mock container image
    mock_image = Mock()
    mock_image.tags = ["test-image:latest"]
    mock_image.id = "sha256:abc123def456"

    # Mock container
    container = Mock()
    container.id = "abc123"
    container.short_id = "abc123"
    container.name = "test-container"
    container.status = "running"
    container.image = mock_image
    container.ports = {"80/tcp": [{"HostPort": "8080"}]}
    container.attrs = {"State": {"Health": {"Status": "healthy"}}, "Config": {"Image": "test-image:latest"}}
    container.logs.return_value = b"test log line 1\ntest log line 2\n"

    client.containers.list.return_value = [container]
    client.containers.get.return_value = container

    return client


@pytest.fixture
def mock_docker_client_with_errors():
    """Mock Docker client that simulates error scenarios.

    Use this fixture to test error handling:
    - Container not found (NotFound exception)
    - Connection errors (APIError)
    - Permission denied (APIError with 403)

    Example:
        def test_container_not_found(test_app, admin_headers, mock_docker_client_with_errors):
            # Configure the mock to raise NotFound
            import docker.errors
            mock_docker_client_with_errors.containers.get.side_effect = docker.errors.NotFound("Container not found")
    """
    import docker.errors

    client = Mock()

    # By default, raise NotFound for get operations
    client.containers.get.side_effect = docker.errors.NotFound("Container not found")
    client.containers.list.return_value = []

    return client


@pytest.fixture
def mock_docker_client_factory():
    """Factory for creating customizable Docker client mocks.

    Returns a function that creates mock clients with specific configurations.

    Example:
        def test_custom_container(mock_docker_client_factory):
            client = mock_docker_client_factory(
                container_name="my-container",
                container_status="stopped",
                image_tag="my-image:v1.0"
            )
    """

    def _create_mock(
        container_name="test-container",
        container_status="running",
        image_tag="test-image:latest",
        container_id="abc123",
    ):
        client = Mock()

        # Mock container image
        mock_image = Mock()
        mock_image.tags = [image_tag]
        mock_image.id = f"sha256:{container_id}def456"

        # Mock container
        container = Mock()
        container.id = container_id
        container.short_id = container_id[:12]
        container.name = container_name
        container.status = container_status
        container.image = mock_image
        container.ports = {"80/tcp": [{"HostPort": "8080"}]}
        container.attrs = {"State": {"Health": {"Status": "healthy"}}, "Config": {"Image": image_tag}}
        container.logs.return_value = b"test log line 1\ntest log line 2\n"

        client.containers.list.return_value = [container]
        client.containers.get.return_value = container

        return client

    return _create_mock


@pytest.fixture
def mock_ssh_connection():
    """Mock asyncssh connection for testing."""
    conn = AsyncMock()
    process = AsyncMock()
    process.stdout = AsyncMock()
    process.stdin = AsyncMock()
    process.stderr = AsyncMock()
    conn.create_process.return_value = process
    return conn


@pytest.fixture
def mock_httpx_client():
    """Mock httpx AsyncClient for testing."""
    client = AsyncMock()
    response = AsyncMock()
    response.status_code = 200
    response.json.return_value = {"status": "ok"}
    client.get.return_value = response
    client.post.return_value = response
    return client


@pytest.fixture
def test_app(mock_config, temp_auth_file, temp_rbac_file, mock_docker_client):
    """Create FastAPI test client with mocked dependencies."""
    # Reload routers to pick up new config values
    import importlib

    import routers.files

    importlib.reload(routers.files)

    # Patch Docker client before importing main
    with patch("docker.DockerClient", return_value=mock_docker_client):
        # Mock the limiter to disable rate limiting during tests
        mock_limiter = Mock()
        mock_limiter.limit = lambda *args, **kwargs: lambda func: func

        with patch("slowapi.Limiter", return_value=mock_limiter):
            from main import app

            client = TestClient(app)
            yield client


@pytest.fixture
def admin_headers(valid_access_token):
    """Headers with admin access token."""
    return {"Authorization": f"Bearer {valid_access_token}"}


@pytest.fixture
def mock_rbac_data():
    """Sample RBAC configuration for testing."""
    return {
        "role_defaults": {
            "admin": {"pages": "*", "sidebar_links": "*"},
            "member": {"pages": ["dashboard", "docker", "files"], "sidebar_links": "*"},
            "viewer": {"pages": ["dashboard"], "sidebar_links": ["dashboard"]},
        },
        "user_overrides": {
            "customuser": {"pages": ["dashboard", "docker"], "sidebar_links": ["dashboard", "docker", "files"]}
        },
    }


@pytest.fixture
def sample_totp_secret():
    """Sample TOTP secret for testing."""
    return "JBSWY3DPEHPK3PXP"  # Base32 encoded secret


@pytest.fixture
def mock_request():
    """Mock FastAPI Request object."""
    request = Mock()
    request.client = Mock()
    request.client.host = "192.168.31.100"
    request.headers = {}
    return request


@pytest.fixture
def mock_conversation_db(tmp_path, monkeypatch):
    """Mock conversation tracker database"""
    import sqlite3

    db_path = tmp_path / "conversations.db"

    # Create minimal SQLite schema
    conn = sqlite3.connect(db_path)
    conn.execute("""
        CREATE TABLE conversations (
            session_id TEXT PRIMARY KEY,
            project_path TEXT,
            started_at DATETIME,
            message_count INTEGER,
            total_input_tokens INTEGER DEFAULT 0,
            total_output_tokens INTEGER DEFAULT 0
        )
    """)
    conn.execute("""
        CREATE TABLE messages (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            session_id TEXT NOT NULL,
            message_uuid TEXT UNIQUE NOT NULL,
            role TEXT NOT NULL,
            content_text TEXT,
            timestamp DATETIME NOT NULL
        )
    """)
    conn.execute("""
        CREATE TABLE tool_calls (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            message_uuid TEXT NOT NULL,
            tool_name TEXT NOT NULL,
            timestamp DATETIME NOT NULL
        )
    """)
    conn.execute("""
        CREATE TABLE daily_summaries (
            id INTEGER PRIMARY KEY AUTOINCREMENT,
            date TEXT UNIQUE NOT NULL,
            summary_content TEXT NOT NULL
        )
    """)

    # Insert test data
    conn.execute("""
        INSERT INTO conversations VALUES
        ('test-session-id', '/test/project', '2026-04-19 10:00:00', 10, 1000, 500)
    """)
    conn.execute("""
        INSERT INTO messages VALUES
        (1, 'test-session-id', 'msg-1', 'user', 'test message', '2026-04-19 10:00:00')
    """)
    conn.commit()
    conn.close()

    monkeypatch.setenv("CONVERSATION_TRACKER_DB", str(db_path))
    return db_path