import pytest
from httpx import AsyncClient
from unittest.mock import patch, AsyncMock, MagicMock


@pytest.mark.asyncio
async def test_match_program_success(async_client: AsyncClient, auth_headers):
    with patch("endpoints.projects.get_llm") as mock_get_llm, patch(
        "core.ncbr_client.ncbr_client.get_active_nabory", new_callable=AsyncMock
    ) as mock_ncbr, patch(
        "core.parp_client.parp_client.get_active_nabory", new_callable=AsyncMock
    ) as mock_parp:
        mock_ncbr.return_value = []
        mock_parp.return_value = []

        mock_llm = MagicMock()
        mock_structured_llm = MagicMock()

        # Build fake programs list
        class DummyExplanation:
            def dict(self):
                return {"reason": "It matches", "criteria": ["R&D"], "risks": "None"}

        class DummyProgram:
            def __init__(self):
                self.id = 1
                self.name = "FENG.01.01-IP.02-001/23"
                self.type = "smart"
                self.match = 95
                self.chance = 80
                self.amount = "10-50 mln PLN"
                self.shortDesc = "Ścieżka SMART"
                self.fullDesc = "Full description"
                self.explanation = DummyExplanation()
                self.criteria = ["R&D"]
                self.risks = "None"

            def dict(self):
                return {
                    "id": self.id,
                    "name": self.name,
                    "type": self.type,
                    "match": self.match,
                    "chance": self.chance,
                    "amount": self.amount,
                    "shortDesc": self.shortDesc,
                    "fullDesc": self.fullDesc,
                    "explanation": self.explanation.dict(),
                    "criteria": self.criteria,
                    "risks": self.risks,
                }

        program_mock = DummyProgram()

        mock_output = MagicMock()
        mock_output.programs = [program_mock]
        mock_output.clarifying_questions = ["What is the TRL level?"]
        mock_output.model_dump.return_value = {
            "programs": [
                {
                    "id": 1,
                    "name": "FENG.01.01-IP.02-001/23",
                    "type": "smart",
                    "match": 95,
                    "chance": 80,
                    "amount": "10-50 mln PLN",
                    "shortDesc": "Ścieżka SMART",
                    "fullDesc": "Full description",
                    "explanation": {
                        "reason": "It matches",
                        "criteria": ["R&D"],
                        "risks": "None",
                    },
                    "criteria": ["R&D"],
                    "risks": "None",
                }
            ],
            "clarifying_questions": ["What is the TRL level?"],
        }

        mock_structured_llm.invoke.return_value = mock_output
        mock_structured_llm.return_value = mock_output
        mock_get_llm.return_value = mock_structured_llm

        payload = {
            "description": "We are building an AI software.",
            "company_type": "sme",
            "company_size": "small",
            "voivodeship": "mazowieckie",
            "innovation_type": "product",
        }

        response = await async_client.post(
            "/api/projects/match-program", json=payload, headers=auth_headers
        )

        assert response.status_code == 200
        data = response.json()
        assert "programs" in data
        assert "clarifying_questions" in data
        assert len(data["programs"]) == 1
        assert "What is the TRL level?" in data["clarifying_questions"]


@pytest.mark.asyncio
async def test_match_program_empty_description(async_client: AsyncClient, auth_headers):
    payload = {
        "description": "",
    }

    with patch("endpoints.projects.get_llm") as mock_get_llm, patch(
        "core.ncbr_client.ncbr_client.get_active_nabory", new_callable=AsyncMock
    ) as mock_ncbr, patch(
        "core.parp_client.parp_client.get_active_nabory", new_callable=AsyncMock
    ) as mock_parp:
        mock_ncbr.return_value = []
        mock_parp.return_value = []

        mock_llm = MagicMock()
        mock_structured_llm = MagicMock()

        mock_output = MagicMock()
        mock_output.programs = []
        mock_output.clarifying_questions = ["Proszę opisać swój projekt."]
        mock_output.model_dump.return_value = {
            "programs": [],
            "clarifying_questions": ["Proszę opisać swój projekt."],
        }

        mock_structured_llm.invoke.return_value = mock_output
        mock_structured_llm.return_value = mock_output
        mock_get_llm.return_value = mock_structured_llm

        response = await async_client.post(
            "/api/projects/match-program", json=payload, headers=auth_headers
        )

        assert response.status_code == 200
        data = response.json()
        assert "programs" in data
        assert "clarifying_questions" in data


@pytest.mark.asyncio
async def test_match_program_llm_fallback(async_client: AsyncClient, auth_headers):
    payload = {
        "description": "Fallback test.",
    }

    with patch("endpoints.projects.get_llm") as mock_get_llm, patch(
        "core.ncbr_client.ncbr_client.get_active_nabory", new_callable=AsyncMock
    ) as mock_ncbr, patch(
        "core.parp_client.parp_client.get_active_nabory", new_callable=AsyncMock
    ) as mock_parp:
        mock_ncbr.return_value = []
        mock_parp.return_value = []

        mock_llm = MagicMock()
        mock_structured_llm = MagicMock()
        mock_structured_llm.invoke.side_effect = Exception("LLM Error")
        mock_structured_llm.side_effect = Exception("LLM Error")
        mock_get_llm.return_value = mock_structured_llm

        response = await async_client.post(
            "/api/projects/match-program", json=payload, headers=auth_headers
        )

        assert response.status_code == 200
        data = response.json()
        assert "programs" in data
        assert len(data["programs"]) == 3
        assert data["programs"][0]["name"] == "Ścieżka SMART (FENG)"