"""
导出设置 API 单元测试

覆盖：
- GET /export-presets - 导出预设列表
- GET /{plan_id}/export - 获取导出配置
- PUT /{plan_id}/export - 更新导出配置
"""

from __future__ import annotations

import os
import sys
from datetime import datetime
from pathlib import Path
from typing import Optional
from unittest.mock import MagicMock

os.environ.setdefault("JWT_SECRET_KEY", "unit-test-secret-key-for-testing")
os.environ.setdefault("DATABASE_URL", "sqlite:///test.db")

import pytest

sys.path.insert(0, str(Path(__file__).resolve().parents[2] / "apps" / "api"))

from fastapi import FastAPI
from fastapi.testclient import TestClient

from packages.domain.config_schemas import normalize_plan_config
from packages.domain.edit_plan import EditPlan, EditPlanStatus

# ---------------------------------------------------------------------------
# Stub Repository
# ---------------------------------------------------------------------------


class StubEditPlanRepository:
    def __init__(self, plans: dict[str, EditPlan] | None = None):
        self._plans = plans or {}

    def get(self, plan_id: str) -> Optional[EditPlan]:
        return self._plans.get(plan_id)

    def create(self, plan: EditPlan) -> EditPlan:
        self._plans[plan.id] = plan
        return plan

    def update(self, plan: EditPlan) -> EditPlan:
        self._plans[plan.id] = plan
        return plan

    def list_all(self, *, status=None, skip=0, limit=50):
        return list(self._plans.values())[skip : skip + limit]

    def list_by_template(self, template_id, *, status=None, skip=0, limit=50):
        return [p for p in self._plans.values() if p.template_id == template_id][skip : skip + limit]

    def delete(self, plan_id: str) -> bool:
        return self._plans.pop(plan_id, None) is not None

    def count(self, *, status=None, template_id=None):
        return len(self._plans)


class StubEditPlanClipRepository:
    def list_by_plan(self, plan_id, *, status=None, skip=0, limit=100):
        return []

    def count(self, plan_id, *, status=None):
        return 0

    def get(self, clip_id: str):
        return None

    def create(self, clip):
        return clip

    def update(self, clip):
        return clip

    def delete(self, clip_id: str) -> bool:
        return False

    def delete_by_plan(self, plan_id: str) -> int:
        return 0


# ---------------------------------------------------------------------------
# Test Fixtures
# ---------------------------------------------------------------------------


def _make_sample_plan(plan_id="plan-001"):
    return EditPlan(
        id=plan_id,
        template_id="tpl-001",
        name="测试计划",
        status=EditPlanStatus.EDITING,
        total_duration=30.0,
        config=normalize_plan_config({}),
        project_id="",
        created_by_user_id="user-001",
        created_at=datetime(2026, 7, 16, 10, 0, 0),
        updated_at=datetime(2026, 7, 16, 10, 0, 0),
    )


def _create_test_app():
    import app.services.edit_plan_service as service_module
    from app.api.routes.edit_plans import router

    plan = _make_sample_plan()
    stub_plan_repo = StubEditPlanRepository({plan.id: plan})
    stub_clip_repo = StubEditPlanClipRepository()

    original_plan_repo = service_module.SQLAlchemyEditPlanRepository
    original_clip_repo = service_module.SQLAlchemyEditPlanClipRepository
    original_gen_repo = service_module.SQLAlchemyGenerationTaskRepository
    service_module.SQLAlchemyEditPlanRepository = lambda db: stub_plan_repo
    service_module.SQLAlchemyEditPlanClipRepository = lambda db: stub_clip_repo
    service_module.SQLAlchemyGenerationTaskRepository = lambda db: MagicMock()

    app = FastAPI()
    app.include_router(router, prefix="/api/v1/edit-plans")

    def _mock_auth():
        mock = MagicMock()
        mock.user.id = "user-001"
        return mock

    import app.api.routes._helpers as helpers_module

    original_check = helpers_module.check_project_access
    helpers_module.check_project_access = lambda *a, **kw: None

    from app.api.routes import edit_plans as main_module

    app.dependency_overrides[main_module.get_current_user] = _mock_auth
    app.dependency_overrides[main_module.get_db_session] = lambda: MagicMock()
    app.dependency_overrides[main_module.get_project_repository] = lambda: MagicMock()

    import app.api.routes.edit_plans_export as export_module

    app.dependency_overrides[export_module.get_current_user] = _mock_auth
    app.dependency_overrides[export_module.get_db_session] = lambda: MagicMock()
    app.dependency_overrides[export_module.get_project_repository] = lambda: MagicMock()

    def cleanup():
        service_module.SQLAlchemyEditPlanRepository = original_plan_repo
        service_module.SQLAlchemyEditPlanClipRepository = original_clip_repo
        service_module.SQLAlchemyGenerationTaskRepository = original_gen_repo
        helpers_module.check_project_access = original_check

    return app, stub_plan_repo, cleanup


@pytest.fixture
def export_client():
    app, plan_repo, cleanup = _create_test_app()
    yield TestClient(app), plan_repo
    cleanup()


# ---------------------------------------------------------------------------
# Export Presets 测试
# ---------------------------------------------------------------------------


class TestExportPresets:
    def test_list_all_presets(self, export_client):
        c, _ = export_client
        resp = c.get("/api/v1/edit-plans/export-presets")
        assert resp.status_code == 200
        data = resp.json()
        assert data["total"] >= 5
        assert len(data["items"]) == data["total"]
        first = data["items"][0]
        assert "id" in first
        assert "name" in first
        assert "resolution" in first
        assert "fps" in first
        assert "video_bitrate" in first
        assert "format" in first
        assert "description" in first
        assert "size_hint" in first

    def test_preset_has_valid_resolution(self, export_client):
        c, _ = export_client
        resp = c.get("/api/v1/edit-plans/export-presets")
        data = resp.json()
        for item in data["items"]:
            assert "x" in item["resolution"]
            assert item["fps"] >= 15
            assert item["fps"] <= 60
            assert item["format"] in ("mp4", "mov")


# ---------------------------------------------------------------------------
# GET /{plan_id}/export 测试
# ---------------------------------------------------------------------------


class TestGetExportConfig:
    def test_default_export_config(self, export_client):
        c, _ = export_client
        resp = c.get("/api/v1/edit-plans/plan-001/export")
        assert resp.status_code == 200
        data = resp.json()
        assert data["resolution"] == "1080x1920"
        assert data["fps"] == 30
        assert data["video_bitrate"] == 8000
        assert data["audio_bitrate"] == 128
        assert data["format"] == "mp4"
        assert data["quality_preset"] == "balanced"
        assert data["watermark_enabled"] is False
        assert data["watermark_text"] == ""

    def test_export_not_found(self, export_client):
        c, _ = export_client
        resp = c.get("/api/v1/edit-plans/plan-nonexist/export")
        assert resp.status_code == 404


# ---------------------------------------------------------------------------
# PUT /{plan_id}/export 测试
# ---------------------------------------------------------------------------


class TestUpdateExportConfig:
    def test_update_resolution_and_fps(self, export_client):
        c, plan_repo = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-001/export",
            json={"resolution": "720x1280", "fps": 60},
        )
        assert resp.status_code == 200
        data = resp.json()
        assert data["resolution"] == "720x1280"
        assert data["fps"] == 60

        plan = plan_repo.get("plan-001")
        assert plan.config["export"]["resolution"] == "720x1280"
        assert plan.config["export"]["fps"] == 60

    def test_update_bitrate(self, export_client):
        c, plan_repo = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-001/export",
            json={"video_bitrate": 12000, "audio_bitrate": 192},
        )
        assert resp.status_code == 200
        data = resp.json()
        assert data["video_bitrate"] == 12000
        assert data["audio_bitrate"] == 192

    def test_update_format(self, export_client):
        c, _ = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-001/export",
            json={"format": "mov"},
        )
        assert resp.status_code == 200
        assert resp.json()["format"] == "mov"

    def test_invalid_format(self, export_client):
        c, _ = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-001/export",
            json={"format": "avi"},
        )
        assert resp.status_code == 422

    def test_update_quality_preset(self, export_client):
        c, _ = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-001/export",
            json={"quality_preset": "best"},
        )
        assert resp.status_code == 200
        assert resp.json()["quality_preset"] == "best"

    def test_invalid_quality_preset(self, export_client):
        c, _ = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-001/export",
            json={"quality_preset": "ultimate"},
        )
        assert resp.status_code == 422

    def test_update_watermark(self, export_client):
        c, plan_repo = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-001/export",
            json={"watermark_enabled": True, "watermark_text": "我的视频"},
        )
        assert resp.status_code == 200
        data = resp.json()
        assert data["watermark_enabled"] is True
        assert data["watermark_text"] == "我的视频"

        plan = plan_repo.get("plan-001")
        assert plan.config["export"]["watermark_enabled"] is True
        assert plan.config["export"]["watermark_text"] == "我的视频"

    def test_invalid_resolution_format(self, export_client):
        c, _ = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-001/export",
            json={"resolution": "1080*1920"},
        )
        assert resp.status_code == 422

    def test_resolution_too_large(self, export_client):
        c, _ = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-001/export",
            json={"resolution": "8000x8000"},
        )
        assert resp.status_code == 422

    def test_fps_out_of_range(self, export_client):
        c, _ = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-001/export",
            json={"fps": 120},
        )
        assert resp.status_code == 422

    def test_export_not_found(self, export_client):
        c, _ = export_client
        resp = c.put(
            "/api/v1/edit-plans/plan-nonexist/export",
            json={"fps": 30},
        )
        assert resp.status_code == 404

    def test_partial_update_preserves_other_fields(self, export_client):
        c, _ = export_client
        # 先修改一个
        c.put("/api/v1/edit-plans/plan-001/export", json={"resolution": "720x1280"})
        # 再修改另一个
        resp = c.put("/api/v1/edit-plans/plan-001/export", json={"fps": 60})
        data = resp.json()
        # 分辨率应该保持
        assert data["resolution"] == "720x1280"
        # fps 更新了
        assert data["fps"] == 60
        # 其他默认值不变
        assert data["format"] == "mp4"
        assert data["video_bitrate"] == 8000