"""测试 create_asset 端点：project_id 可选，从 library 自动推导。"""

from unittest.mock import MagicMock, patch

import pytest
from app.api.routes.assets import create_asset
from app.auth import AuthenticatedUser
from app.schemas.asset import CreateAssetRequest
from fastapi import HTTPException

from packages.domain import AssetStatus, ClassificationStatus


@pytest.fixture
def mock_user():
    user = MagicMock(spec=AuthenticatedUser)
    user.user.id = "user-123"
    return user


@pytest.fixture
def mock_library():
    lib = MagicMock()
    lib.id = "lib-abc"
    lib.project_id = "proj-from-library"
    return lib


@pytest.fixture
def mock_project():
    proj = MagicMock()
    proj.id = "proj-from-library"
    proj.can_access.return_value = True
    return proj


def _make_request(**overrides):
    defaults = dict(
        library_id="lib-abc",
        name="test-audio.mp3",
        storage_key="uploads/test.mp3",
        mime_type="audio/mpeg",
        file_size=1024,
        status="uploading",
    )
    defaults.update(overrides)
    return CreateAssetRequest(**defaults)


def test_project_id_derived_from_library_when_not_provided(mock_user, mock_library, mock_project):
    """前端不传 project_id 时，从 library.project_id 自动推导。"""
    request = _make_request()  # project_id 默认 None

    asset_repo = MagicMock()
    lib_repo = MagicMock()
    lib_repo.get.return_value = mock_library
    proj_repo = MagicMock()
    proj_repo.find_by_id.return_value = mock_project

    expected_asset = MagicMock()
    expected_asset.id = "asset-1"
    expected_asset.project_id = "proj-from-library"
    expected_asset.library_id = "lib-abc"
    expected_asset.name = "test-audio.mp3"
    expected_asset.storage_key = ""
    expected_asset.mime_type = "audio/mpeg"
    expected_asset.metadata = {}
    expected_asset.file_size = 1024
    expected_asset.thumbnail_url = None
    expected_asset.duration = None
    expected_asset.width = None
    expected_asset.height = None
    expected_asset.fps = None
    expected_asset.codec = None
    expected_asset.status = AssetStatus.UPLOADING
    expected_asset.classification_status = ClassificationStatus.PENDING
    expected_asset.quality_score = None
    expected_asset.created_at = None
    expected_asset.uploaded_by_user_id = "user-123"
    expected_asset.tag_ids = []
    with patch("app.api.routes.assets.CreateAssetUseCase") as mock_uc:
        mock_uc.return_value.execute.return_value = expected_asset
        result = create_asset(
            request=request,
            authenticated_user=mock_user,
            asset_repository=asset_repo,
            asset_library_repository=lib_repo,
            project_repository=proj_repo,
        )

    # 验证 project_id 被正确推导
    proj_repo.find_by_id.assert_called_once_with("proj-from-library")
    # 验证 use case 使用的是推导出的 project_id
    cmd = mock_uc.return_value.execute.call_args[0][0]
    assert cmd.project_id == "proj-from-library"


def test_explicit_project_id_used_when_provided(mock_user, mock_library, mock_project):
    """前端显式传 project_id 时，优先使用请求值。"""
    mock_project.id = "proj-explicit"
    mock_project.can_access.return_value = True
    mock_library.project_id = "proj-explicit"  # 匹配

    request = _make_request(project_id="proj-explicit")

    asset_repo = MagicMock()
    lib_repo = MagicMock()
    lib_repo.get.return_value = mock_library
    proj_repo = MagicMock()
    proj_repo.find_by_id.return_value = mock_project

    mock_asset = MagicMock()
    mock_asset.id = "asset-1"
    mock_asset.storage_key = ""
    mock_asset.mime_type = "audio/mpeg"
    mock_asset.project_id = "proj-explicit"
    mock_asset.library_id = "lib-abc"
    mock_asset.name = "test"
    mock_asset.metadata = {}
    mock_asset.file_size = 0
    mock_asset.thumbnail_url = None
    mock_asset.duration = None
    mock_asset.width = None
    mock_asset.height = None
    mock_asset.fps = None
    mock_asset.codec = None
    mock_asset.status = AssetStatus.UPLOADING
    mock_asset.classification_status = ClassificationStatus.PENDING
    mock_asset.quality_score = None
    mock_asset.created_at = None
    mock_asset.uploaded_by_user_id = "user-123"
    mock_asset.tag_ids = []

    with patch("app.api.routes.assets.CreateAssetUseCase") as mock_uc:
        mock_uc.return_value.execute.return_value = mock_asset
        create_asset(
            request=request,
            authenticated_user=mock_user,
            asset_repository=asset_repo,
            asset_library_repository=lib_repo,
            project_repository=proj_repo,
        )

    proj_repo.find_by_id.assert_called_once_with("proj-explicit")
    cmd = mock_uc.return_value.execute.call_args[0][0]
    assert cmd.project_id == "proj-explicit"


def test_library_not_found_returns_404(mock_user):
    """素材库不存在时返回 404。"""
    request = _make_request()

    lib_repo = MagicMock()
    lib_repo.get.return_value = None
    proj_repo = MagicMock()
    asset_repo = MagicMock()

    with pytest.raises(HTTPException) as exc_info:
        create_asset(
            request=request,
            authenticated_user=mock_user,
            asset_repository=asset_repo,
            asset_library_repository=lib_repo,
            project_repository=proj_repo,
        )
    assert exc_info.value.status_code == 404


def test_library_project_mismatch_returns_400(mock_user, mock_library, mock_project):
    """当 library.project_id 与请求的 project_id 不一致时返回 400。"""
    mock_library.project_id = "proj-A"
    mock_project.id = "proj-B"

    request = _make_request(project_id="proj-B")

    lib_repo = MagicMock()
    lib_repo.get.return_value = mock_library
    proj_repo = MagicMock()
    proj_repo.find_by_id.return_value = mock_project
    asset_repo = MagicMock()

    with pytest.raises(HTTPException) as exc_info:
        create_asset(
            request=request,
            authenticated_user=mock_user,
            asset_repository=asset_repo,
            asset_library_repository=lib_repo,
            project_repository=proj_repo,
        )
    assert exc_info.value.status_code == 400