"""Integration tests for sources API endpoints.

Tests all source endpoints with mocked services.
"""

from datetime import datetime
from unittest.mock import AsyncMock, MagicMock, patch
from uuid import uuid4

import pytest
from fastapi.testclient import TestClient

from notebooklm_agent.api.main import app
from notebooklm_agent.api.models.responses import Source


@pytest.mark.unit
class TestCreateSourceEndpoint:
    """Test suite for POST /api/v1/notebooks/{id}/sources endpoint."""

    def test_create_url_source_returns_201(self):
        """Should return 201 for valid URL source."""
        # Arrange
        client = TestClient(app)
        notebook_id = str(uuid4())
        source_id = str(uuid4())

        with patch("notebooklm_agent.api.routes.sources.SourceService") as mock_service_class:
            mock_service = AsyncMock()
            mock_source = AsyncMock()
            mock_source.id = source_id
            mock_source.notebook_id = notebook_id
            mock_source.type = "url"
            mock_source.title = "Example Article"
            mock_source.url = "https://example.com/article"
            mock_source.status = "processing"
            mock_source.created_at = "2026-04-06T10:00:00Z"
            mock_service.create.return_value = mock_source
            mock_service_class.return_value = mock_service

            # Act
            response = client.post(
                f"/api/v1/notebooks/{notebook_id}/sources",
                json={"type": "url", "url": "https://example.com/article", "title": "Example"},
            )

            # Assert
            assert response.status_code == 201
            data = response.json()
            assert data["success"] is True
            assert data["data"]["type"] == "url"

    def test_create_source_invalid_notebook_id_returns_400(self):
        """Should return 400 for invalid notebook ID."""
        # Arrange
        client = TestClient(app)

        # Act
        response = client.post(
            "/api/v1/notebooks/invalid-id/sources",
            json={"type": "url", "url": "https://example.com"},
        )

        # Assert
        assert response.status_code in [400, 422]

    def test_create_source_missing_url_returns_400(self):
        """Should return 400 when URL missing for url type."""
        # Arrange
        client = TestClient(app)
        notebook_id = str(uuid4())

        with patch("notebooklm_agent.api.routes.sources.SourceService") as mock_service_class:
            mock_service = AsyncMock()
            from notebooklm_agent.core.exceptions import ValidationError

            mock_service.create.side_effect = ValidationError("URL is required")
            mock_service_class.return_value = mock_service

            # Act
            response = client.post(
                f"/api/v1/notebooks/{notebook_id}/sources",
                json={"type": "url", "url": None},
            )

            # Assert
            assert response.status_code in [400, 422]


@pytest.mark.unit
class TestListSourcesEndpoint:
    """Test suite for GET /api/v1/notebooks/{id}/sources endpoint."""

    def test_list_sources_returns_200(self):
        """Should return 200 with list of sources."""
        # Arrange
        client = TestClient(app)
        notebook_id = str(uuid4())
        source_id = str(uuid4())

        with patch("notebooklm_agent.api.routes.sources.SourceService") as mock_service_class:
            mock_service = AsyncMock()
            mock_source = Source(
                id=source_id,
                notebook_id=notebook_id,
                type="url",
                title="Example",
                url="https://example.com",
                status="ready",
                created_at=datetime.utcnow(),
            )
            mock_service.list.return_value = [mock_source]
            mock_service_class.return_value = mock_service

            # Act
            response = client.get(f"/api/v1/notebooks/{notebook_id}/sources")

            # Assert
            assert response.status_code == 200
            data = response.json()
            assert data["success"] is True
            assert len(data["data"]["items"]) == 1
            assert data["data"]["items"][0]["type"] == "url"

    def test_list_sources_with_type_filter(self):
        """Should filter sources by type."""
        # Arrange
        client = TestClient(app)
        notebook_id = str(uuid4())

        with patch("notebooklm_agent.api.routes.sources.SourceService") as mock_service_class:
            mock_service = AsyncMock()
            mock_service.list.return_value = []
            mock_service_class.return_value = mock_service

            # Act
            response = client.get(f"/api/v1/notebooks/{notebook_id}/sources?source_type=youtube")

            # Assert
            assert response.status_code == 200
            from uuid import UUID

            mock_service.list.assert_called_once_with(UUID(notebook_id), "youtube", None)

    def test_list_sources_invalid_notebook_id_returns_400(self):
        """Should return 400 for invalid notebook ID."""
        # Arrange
        client = TestClient(app)

        # Act
        response = client.get("/api/v1/notebooks/invalid-id/sources")

        # Assert
        assert response.status_code in [400, 422]


@pytest.mark.unit
class TestDeleteSourceEndpoint:
    """Test suite for DELETE /api/v1/notebooks/{id}/sources/{source_id} endpoint."""

    def test_delete_source_returns_204(self):
        """Should return 204 No Content for successful delete."""
        # Arrange
        client = TestClient(app)
        notebook_id = str(uuid4())
        source_id = str(uuid4())

        with patch("notebooklm_agent.api.routes.sources.SourceService") as mock_service_class:
            mock_service = AsyncMock()
            mock_source = Source(
                id=source_id,
                notebook_id=notebook_id,
                type="url",
                title="Example",
                url="https://example.com",
                status="ready",
                created_at=datetime.utcnow(),
            )
            mock_service.list.return_value = [mock_source]
            mock_service_class.return_value = mock_service

            # Act
            response = client.delete(f"/api/v1/notebooks/{notebook_id}/sources/{source_id}")

            # Assert
            assert response.status_code == 204
            assert response.content == b""

    def test_delete_source_not_found_returns_404(self):
        """Should return 404 when source not found."""
        # Arrange
        client = TestClient(app)
        notebook_id = str(uuid4())
        source_id = str(uuid4())

        with patch("notebooklm_agent.api.routes.sources.SourceService") as mock_service_class:
            mock_service = AsyncMock()
            from notebooklm_agent.core.exceptions import NotFoundError

            mock_service.delete.side_effect = NotFoundError("Source", source_id)
            mock_service_class.return_value = mock_service

            # Act
            response = client.delete(f"/api/v1/notebooks/{notebook_id}/sources/{source_id}")

            # Assert
            assert response.status_code == 404

    def test_delete_source_invalid_notebook_id_returns_400(self):
        """Should return 400 for invalid notebook ID."""
        # Arrange
        client = TestClient(app)
        source_id = str(uuid4())

        # Act
        response = client.delete(f"/api/v1/notebooks/invalid-id/sources/{source_id}")

        # Assert
        assert response.status_code in [400, 422]


@pytest.mark.unit
class TestResearchEndpoint:
    """Test suite for POST /api/v1/notebooks/{id}/sources/research endpoint."""

    def test_research_returns_202(self):
        """Should return 202 Accepted for research start."""
        # Arrange
        client = TestClient(app)
        notebook_id = str(uuid4())

        with patch("notebooklm_agent.api.routes.sources.SourceService") as mock_service_class:
            mock_service = AsyncMock()
            mock_service.research.return_value = {
                "research_id": str(uuid4()),
                "status": "pending",
                "query": "AI trends",
                "mode": "fast",
                "sources_found": 0,
            }
            mock_service_class.return_value = mock_service

            # Act
            response = client.post(
                f"/api/v1/notebooks/{notebook_id}/sources/research",
                json={"query": "AI trends", "mode": "fast", "auto_import": True},
            )

            # Assert
            assert response.status_code == 202
            data = response.json()
            assert data["success"] is True
            assert data["data"]["status"] == "pending"

    def test_research_invalid_mode_returns_400(self):
        """Should return 400 for invalid research mode."""
        # Arrange
        client = TestClient(app)
        notebook_id = str(uuid4())

        with patch("notebooklm_agent.api.routes.sources.SourceService") as mock_service_class:
            mock_service = AsyncMock()
            from notebooklm_agent.core.exceptions import ValidationError

            mock_service.research.side_effect = ValidationError("Mode must be 'fast' or 'deep'")
            mock_service_class.return_value = mock_service

            # Act
            response = client.post(
                f"/api/v1/notebooks/{notebook_id}/sources/research",
                json={"query": "AI trends", "mode": "invalid"},
            )

            # Assert
            assert response.status_code in [400, 422]

    def test_research_empty_query_returns_400(self):
        """Should return 400 for empty query."""
        # Arrange
        client = TestClient(app)
        notebook_id = str(uuid4())

        with patch("notebooklm_agent.api.routes.sources.SourceService") as mock_service_class:
            mock_service = AsyncMock()
            from notebooklm_agent.core.exceptions import ValidationError

            mock_service.research.side_effect = ValidationError("Query cannot be empty")
            mock_service_class.return_value = mock_service

            # Act
            response = client.post(
                f"/api/v1/notebooks/{notebook_id}/sources/research",
                json={"query": "", "mode": "fast"},
            )

            # Assert
            assert response.status_code in [400, 422]

    def test_research_invalid_notebook_id_returns_400(self):
        """Should return 400 for invalid notebook ID."""
        # Arrange
        client = TestClient(app)

        # Act
        response = client.post(
            "/api/v1/notebooks/invalid-id/sources/research",
            json={"query": "AI trends", "mode": "fast"},
        )

        # Assert
        assert response.status_code in [400, 422]