import pytest
from fastapi import HTTPException
from pydantic import ValidationError
from app.presentation.schemas.auth_schema import JoinRequest, LoginRequest
from app.presentation.schemas.useritems_schema import GetItemsRequest, UpdateItemRequest
from app.presentation.schemas.uservideo_schema import GetVideosRequest

class TestSchemaValidation:
    """Pydantic 스키마 검증 테스트"""
    
    def test_join_request_valid(self):
        """유효한 회원가입 요청 스키마 테스트"""
        request = JoinRequest(
            email="test@example.com",
            password="Test1234!",
            password_confirm="Test1234!",
            name="Test User"
        )
        assert request.email == "test@example.com"
        assert request.name == "Test User"
    
    def test_join_request_password_mismatch(self):
        """비밀번호 불일치 검증 테스트"""
        with pytest.raises(ValidationError) as exc_info:
            JoinRequest(
                email="test@example.com",
                password="Test1234!",
                password_confirm="Different1234!",
                name="Test User"
            )
        assert "passwords do not match" in str(exc_info.value).lower()
    
    def test_join_request_invalid_email(self):
        """잘못된 이메일 형식 테스트"""
        with pytest.raises(ValidationError) as exc_info:
            JoinRequest(
                email="invalid-email",
                password="Test1234!",
                password_confirm="Test1234!",
                name="Test User"
            )
        assert "email" in str(exc_info.value).lower()
    
    def test_login_request_valid(self):
        """유효한 로그인 요청 스키마 테스트"""
        request = LoginRequest(
            email="test@example.com",
            password="Test1234!"
        )
        assert request.email == "test@example.com"
        assert request.password == "Test1234!"
    
    def test_get_items_request_with_pagination(self):
        """페이지네이션이 포함된 아이템 조회 요청 테스트"""
        request = GetItemsRequest(
            user_id=1,
            page=2,
            limit=20
        )
        assert request.user_id == 1
        assert request.page == 2
        assert request.limit == 20
    
    def test_get_items_request_default_values(self):
        """기본값을 사용하는 아이템 조회 요청 테스트"""
        request = GetItemsRequest(user_id=1)
        assert request.user_id == 1
        assert request.page == 1  # 기본값
        assert request.limit == 10  # 기본값
    
    def test_update_item_request_partial(self):
        """부분 업데이트 요청 테스트"""
        request = UpdateItemRequest(
            item_id=1,
            name="Updated Name"
            # description은 선택적
        )
        assert request.item_id == 1
        assert request.name == "Updated Name"
        assert request.description is None
    
    @pytest.mark.parametrize("invalid_data,expected_error", [
        ({"user_id": "not_a_number"}, "user_id"),
        ({"user_id": -1}, "user_id"),
        ({"user_id": 1, "page": 0}, "page"),
        ({"user_id": 1, "limit": 101}, "limit"),
    ])
    def test_get_items_request_invalid_data(self, invalid_data, expected_error):
        """잘못된 데이터로 아이템 조회 요청 테스트"""
        with pytest.raises(ValidationError) as exc_info:
            GetItemsRequest(**invalid_data)
        assert expected_error in str(exc_info.value).lower()
    
    def test_schema_json_serialization(self):
        """스키마 JSON 직렬화 테스트"""
        request = LoginRequest(
            email="test@example.com",
            password="Test1234!"
        )
        
        # JSON으로 변환
        json_data = request.model_dump_json()
        assert "test@example.com" in json_data
        
        # JSON에서 다시 객체로
        parsed = LoginRequest.model_validate_json(json_data)
        assert parsed.email == request.email