"""
Unit tests for simplified Bielik service
Tests the API structure without running actual models
"""
import os
import json
from unittest.mock import Mock, AsyncMock, patch

# Skip llama-cpp installation during testing
os.environ["SKIP_LLAMA_INSTALL"] = "1"

# Mock the registry before importing main
mock_registry = Mock()
mock_registry.get_available_model_names.return_value = ["bielik-1.5b-transformer", "bielik-11b-transformer"]
mock_registry.get_model_info.return_value = {"type": "transformers", "device": "cuda:0"}

@patch("app.main.registry", mock_registry)
def test_app_structure():
    """Test that simplified app has correct endpoints"""
    from app.main import app
    
    # Get all routes
    routes = {route.path: route.methods for route in app.routes}
    
    # Check required endpoints exist
    assert "/" in routes, "Root endpoint missing"
    assert "/health" in routes, "Health endpoint missing"
    assert "/models" in routes, "Models endpoint missing"
    assert "/chat" in routes, "Chat endpoint missing"
    assert "/generate" in routes, "Generate endpoint missing"
    
    # Check methods
    assert "GET" in routes["/health"], "Health should be GET"
    assert "GET" in routes["/models"], "Models should be GET"
    assert "POST" in routes["/chat"], "Chat should be POST"
    assert "POST" in routes["/generate"], "Generate should be POST"
    
    print("✅ App structure correct")
    print(f"   Routes: {list(routes.keys())}")

@patch("app.main.registry", mock_registry)
def test_no_business_logic():
    """Verify no domain/infill endpoints exist"""
    from app.main import app
    
    routes = {route.path for route in app.routes}
    
    # These should NOT exist
    forbidden_routes = ["/enhance", "/compare", "/infill", "/compare-infill", "/user/me"]
    
    for route in forbidden_routes:
        assert route not in routes, f"Business logic endpoint {route} should not exist"
    
    print("✅ No business logic endpoints found")

@patch("app.main.registry", mock_registry)
def test_request_schemas():
    """Test request/response schemas are valid"""
    from app.main import ChatRequest, GenerateRequest, ChatResponse, GenerateResponse
    from app.main import Message, HealthResponse, ModelsResponse
    
    # Test ChatRequest
    chat_req = ChatRequest(
        model="bielik-1.5b-transformer",
        messages=[Message(role="user", content="Hello")]
    )
    assert chat_req.model == "bielik-1.5b-transformer"
    assert len(chat_req.messages) == 1
    print("✅ ChatRequest schema valid")
    
    # Test GenerateRequest
    gen_req = GenerateRequest(
        model="bielik-1.5b-transformer",
        prompt="Hello world"
    )
    assert gen_req.model == "bielik-1.5b-transformer"
    assert gen_req.prompt == "Hello world"
    print("✅ GenerateRequest schema valid")
    
    # Test HealthResponse
    health = HealthResponse(
        status="ok",
        gpu_available=True,
        models_available=2
    )
    assert health.status == "ok"
    print("✅ HealthResponse schema valid")
    
    # Test ModelsResponse
    models_resp = ModelsResponse(models=[])
    assert isinstance(models_resp.models, list)
    print("✅ ModelsResponse schema valid")

@patch("app.main.registry", mock_registry)
def test_default_values():
    """Test that requests have sensible defaults"""
    from app.main import ChatRequest, GenerateRequest, Message
    
    # Chat with minimal fields
    chat = ChatRequest(
        model="test",
        messages=[Message(role="user", content="test")]
    )
    assert chat.max_tokens == 150
    assert chat.temperature == 0.7
    assert chat.top_p == 0.9
    print("✅ Chat defaults correct")
    
    # Generate with minimal fields
    gen = GenerateRequest(
        model="test",
        prompt="test"
    )
    assert gen.max_tokens == 150
    assert gen.temperature == 0.7
    assert gen.top_p == 0.9
    print("✅ Generate defaults correct")

if __name__ == "__main__":
    print("\n=== Testing Simplified Bielik Service ===\n")
    
    try:
        test_app_structure()
        test_no_business_logic()
        test_request_schemas()
        test_default_values()
        
        print("\n✅ All tests passed!")
        print("\n=== Phase 1 Verification Complete ===")
    except AssertionError as e:
        print(f"\n❌ Test failed: {e}")
        exit(1)