"""
Download API integration tests.
"""
import pytest


class TestDownloadJobs:
    """Tests for download job management."""

    def test_list_jobs_requires_auth(self, client):
        """List jobs should require authentication."""
        response = client.get("/api/downloads/jobs")
        assert response.status_code in [401, 423]  # Unauthorized or setup incomplete

    def test_create_job_requires_auth(self, client):
        """Create job should require authentication."""
        response = client.post("/api/downloads/jobs", json={
            "source_url": "https://open.spotify.com/track/123",
            "source": "spotify",
            "quality": "high",
        })
        assert response.status_code in [401, 423]

    def test_get_queue_requires_auth(self, client):
        """Get queue should require authentication."""
        response = client.get("/api/downloads/queue")
        assert response.status_code in [401, 423]

    def test_get_status_requires_auth(self, client):
        """Get status should require authentication."""
        response = client.get("/api/downloads/status")
        assert response.status_code in [401, 423]


class TestDownloadJobsWithAuth:
    """Tests for download jobs with authentication."""

    def test_list_jobs_returns_empty_initially(self, client, auth_headers):
        """List jobs should return empty list for new user."""
        response = client.get("/api/downloads/jobs", headers=auth_headers)
        assert response.status_code == 200

        data = response.get_json()
        assert "jobs" in data
        assert "total" in data
        assert isinstance(data["jobs"], list)

    def test_create_job_validates_source(self, client, auth_headers):
        """Create job should accept valid source."""
        response = client.post(
            "/api/downloads/jobs",
            headers=auth_headers,
            json={
                "source_url": "https://open.spotify.com/track/test123",
                "source": "spotify",
                "quality": "high",
                "item_type": "track",
            },
        )
        
        # Should create job (201) or fail gracefully
        assert response.status_code in [200, 201, 400, 503]
        
        if response.status_code in [200, 201]:
            data = response.get_json()
            assert "job_id" in data or "job" in data

    def test_get_queue_returns_structure(self, client, auth_headers):
        """Get queue should return expected structure."""
        response = client.get("/api/downloads/queue", headers=auth_headers)
        assert response.status_code == 200

        data = response.get_json()
        assert "queue" in data
        assert "pending" in data
        assert "active" in data
        assert "history" in data
        assert "queue_length" in data
        assert "active_downloads" in data

    def test_get_status_returns_counts(self, client, auth_headers):
        """Get status should return job counts by state."""
        response = client.get("/api/downloads/status", headers=auth_headers)
        assert response.status_code == 200

        data = response.get_json()
        assert "counts" in data
        assert "total" in data
        
        counts = data["counts"]
        assert "queued" in counts
        assert "downloading" in counts
        assert "completed" in counts
        assert "failed" in counts
        assert "cancelled" in counts

    def test_get_history_returns_structure(self, client, auth_headers):
        """Get history should return paginated results."""
        response = client.get("/api/downloads/history", headers=auth_headers)
        assert response.status_code == 200

        data = response.get_json()
        assert "history" in data
        assert "total" in data
        assert "limit" in data
        assert "offset" in data


class TestDownloadJobOperations:
    """Tests for individual job operations."""

    def test_get_nonexistent_job(self, client, auth_headers):
        """Get nonexistent job should return 404."""
        response = client.get("/api/downloads/jobs/999999", headers=auth_headers)
        assert response.status_code == 404

    def test_cancel_nonexistent_job(self, client, auth_headers):
        """Cancel nonexistent job should fail."""
        response = client.post("/api/downloads/jobs/999999/cancel", headers=auth_headers)
        assert response.status_code in [400, 404]

    def test_retry_nonexistent_job(self, client, auth_headers):
        """Retry nonexistent job should fail."""
        response = client.post("/api/downloads/jobs/999999/retry", headers=auth_headers)
        assert response.status_code in [400, 404]


class TestImportWorkflow:
    """Tests for the import workflow."""

    def test_get_import_candidates_requires_auth(self, client):
        """Get import candidates should require authentication."""
        response = client.post("/api/downloads/imports/candidates", json={
            "trackhash": "testhash123",
        })
        assert response.status_code in [401, 423]

    def test_confirm_import_requires_auth(self, client):
        """Confirm import should require authentication."""
        response = client.post("/api/downloads/imports/confirm", json={
            "trackhash": "testhash123",
        })
        assert response.status_code in [401, 423]

    def test_get_import_candidates_returns_structure(self, client, auth_headers):
        """Get import candidates should return expected structure."""
        response = client.post(
            "/api/downloads/imports/candidates",
            headers=auth_headers,
            json={"trackhash": "nonexistent_hash_12345"},
        )
        assert response.status_code == 200

        data = response.get_json()
        assert "trackhash" in data
        assert "availability" in data
        assert "candidates" in data


class TestStorageRoots:
    """Tests for storage roots management."""

    def test_get_storage_roots_requires_auth(self, client):
        """Get storage roots should require authentication."""
        response = client.get("/api/downloads/storage/roots")
        assert response.status_code in [401, 423]

    def test_set_storage_roots_requires_auth(self, client):
        """Set storage roots should require authentication."""
        response = client.post("/api/downloads/storage/roots", json={
            "root_dirs": ["/home/user/music"],
        })
        assert response.status_code in [401, 423]

    def test_get_storage_roots_returns_structure(self, client, auth_headers):
        """Get storage roots should return expected structure."""
        response = client.get("/api/downloads/storage/roots", headers=auth_headers)
        assert response.status_code == 200

        data = response.get_json()
        # Should have root_dirs or similar
        assert isinstance(data, dict)


class TestDownloadContract:
    """Contract tests for download API."""

    def test_job_response_schema(self, client, auth_headers):
        """Job response should match expected schema."""
        # Create a job
        create_response = client.post(
            "/api/downloads/jobs",
            headers=auth_headers,
            json={
                "source_url": "https://open.spotify.com/track/contracttest",
                "source": "spotify",
                "quality": "high",
                "item_type": "track",
                "title": "Contract Test Track",
                "artist": "Contract Test Artist",
            },
        )
        
        if create_response.status_code in [200, 201]:
            data = create_response.get_json()
            
            # If job was created, verify structure
            if "job" in data:
                job = data["job"]
                assert "id" in job or "job_id" in job
                assert "state" in job

    def test_queue_response_schema(self, client, auth_headers):
        """Queue response should match expected schema."""
        response = client.get("/api/downloads/queue", headers=auth_headers)
        assert response.status_code == 200

        data = response.get_json()
        
        # Verify all required fields
        required_fields = ["queue", "pending", "active", "history", "queue_length", "active_downloads"]
        for field in required_fields:
            assert field in data, f"Missing field: {field}"