from fastapi.testclient import TestClient
from main import app
from unittest.mock import MagicMock, patch



def test_discovery_endpoint(client):
    # Mock the service to avoid DB calls
    with patch('src.api.discovery.SegmentDiscoveryService') as MockService:
        instance = MockService.return_value
        instance.discover_segments.return_value = ([], []) # Empty candidates, empty debug paths

        
        response = client.post("/api/discovery/segments", json={
            "activity_type": "cycling",
            "start_date": "2025-01-01T00:00:00"
        })
        
        assert response.status_code == 200
        data = response.json()
        assert "candidates" in data
        assert isinstance(data["candidates"], list)
        assert "debug_paths" in data
        assert isinstance(data["debug_paths"], list)

        
def test_discovery_page_render(client):
    response = client.get("/discovery")
    assert response.status_code == 200
    assert "Segment Discovery" in response.text