"""权限模板服务单元测试"""
from __future__ import annotations

import uuid

import pytest

from app.models.permission_template import PermissionTemplate, TemplateType
from app.schemas.permission_template import PermissionTemplateCreate, PermissionTemplateUpdate
from app.services.permission_template_service import PermissionTemplateService


SAMPLE_PERMISSIONS = {
    "PM": {
        "subjects:create": True,
        "subjects:read": True,
        "subjects:update": True,
        "subjects:delete": False,
    },
    "CRA": {
        "subjects:create": False,
        "subjects:read": True,
        "subjects:update": False,
        "subjects:delete": False,
    },
}


@pytest.fixture
def user_id() -> uuid.UUID:
    return uuid.uuid4()


# ---------------------------------------------------------------------------
# 创建模板
# ---------------------------------------------------------------------------

@pytest.mark.asyncio
async def test_create_template_success(db_session, user_id):
    payload = PermissionTemplateCreate(
        name="测试模板",
        description="用于测试",
        template_type=TemplateType.CUSTOM,
        permissions=SAMPLE_PERMISSIONS,
    )
    template = await PermissionTemplateService.create_template(db_session, payload, user_id)

    assert template.id is not None
    assert template.name == "测试模板"
    assert template.is_system is False
    assert template.template_type == TemplateType.CUSTOM
    assert template.permissions == SAMPLE_PERMISSIONS


@pytest.mark.asyncio
async def test_create_template_creates_version_1(db_session, user_id):
    payload = PermissionTemplateCreate(
        name="版本测试",
        template_type=TemplateType.CUSTOM,
        permissions=SAMPLE_PERMISSIONS,
    )
    template = await PermissionTemplateService.create_template(db_session, payload, user_id)

    await db_session.refresh(template, ["versions"])
    assert len(template.versions) == 1
    assert template.versions[0].version == 1
    assert template.versions[0].change_log == "初始版本"


@pytest.mark.asyncio
async def test_create_template_invalid_endpoint_key(db_session, user_id):
    payload = PermissionTemplateCreate(
        name="无效模板",
        template_type=TemplateType.CUSTOM,
        permissions={"PM": {"nonexistent:action": True}},
    )
    with pytest.raises(ValueError, match="权限操作 nonexistent:action 不存在"):
        await PermissionTemplateService.create_template(db_session, payload, user_id)


@pytest.mark.asyncio
async def test_create_template_invalid_permission_value(db_session, user_id):
    payload = PermissionTemplateCreate(
        name="无效值模板",
        template_type=TemplateType.CUSTOM,
        permissions={"PM": {"subjects:read": "yes"}},  # type: ignore
    )
    with pytest.raises(ValueError, match="必须是布尔类型"):
        await PermissionTemplateService.create_template(db_session, payload, user_id)


# ---------------------------------------------------------------------------
# 获取模板
# ---------------------------------------------------------------------------

@pytest.mark.asyncio
async def test_get_template_exists(db_session, user_id):
    payload = PermissionTemplateCreate(
        name="获取测试",
        template_type=TemplateType.ROLE,
        permissions=SAMPLE_PERMISSIONS,
    )
    created = await PermissionTemplateService.create_template(db_session, payload, user_id)
    fetched = await PermissionTemplateService.get_template(db_session, created.id)

    assert fetched is not None
    assert fetched.id == created.id
    assert fetched.name == "获取测试"


@pytest.mark.asyncio
async def test_get_template_not_found(db_session):
    result = await PermissionTemplateService.get_template(db_session, uuid.uuid4())
    assert result is None


# ---------------------------------------------------------------------------
# 列表模板
# ---------------------------------------------------------------------------

@pytest.mark.asyncio
async def test_list_templates_filter_by_type(db_session, user_id):
    await PermissionTemplateService.create_template(
        db_session,
        PermissionTemplateCreate(name="角色模板", template_type=TemplateType.ROLE, permissions=SAMPLE_PERMISSIONS),
        user_id,
    )
    await PermissionTemplateService.create_template(
        db_session,
        PermissionTemplateCreate(name="场景模板", template_type=TemplateType.SCENARIO, permissions=SAMPLE_PERMISSIONS),
        user_id,
    )

    role_templates = await PermissionTemplateService.list_templates(db_session, template_type=TemplateType.ROLE)
    assert all(t.template_type == TemplateType.ROLE for t in role_templates)
    assert len(role_templates) >= 1


# ---------------------------------------------------------------------------
# 更新模板
# ---------------------------------------------------------------------------

@pytest.mark.asyncio
async def test_update_template_name(db_session, user_id):
    created = await PermissionTemplateService.create_template(
        db_session,
        PermissionTemplateCreate(name="旧名称", template_type=TemplateType.CUSTOM, permissions=SAMPLE_PERMISSIONS),
        user_id,
    )

    updated = await PermissionTemplateService.update_template(
        db_session, created.id, PermissionTemplateUpdate(name="新名称")
    )
    assert updated.name == "新名称"


@pytest.mark.asyncio
async def test_update_template_permissions_creates_new_version(db_session, user_id):
    created = await PermissionTemplateService.create_template(
        db_session,
        PermissionTemplateCreate(name="版本测试2", template_type=TemplateType.CUSTOM, permissions=SAMPLE_PERMISSIONS),
        user_id,
    )

    new_perms = {"PM": {"subjects:read": True}}
    await PermissionTemplateService.update_template(
        db_session, created.id, PermissionTemplateUpdate(permissions=new_perms)
    )

    updated = await PermissionTemplateService.get_template(db_session, created.id)
    await db_session.refresh(updated, ["versions"])
    assert len(updated.versions) == 2
    assert updated.versions[-1].version == 2
    assert updated.permissions == new_perms


@pytest.mark.asyncio
async def test_update_system_template_raises(db_session):
    system_template = PermissionTemplate(
        name="系统模板",
        template_type=TemplateType.ROLE,
        is_system=True,
        permissions=SAMPLE_PERMISSIONS,
    )
    db_session.add(system_template)
    await db_session.commit()
    await db_session.refresh(system_template)

    with pytest.raises(ValueError, match="不允许修改系统预设模板"):
        await PermissionTemplateService.update_template(
            db_session, system_template.id, PermissionTemplateUpdate(name="改名")
        )


# ---------------------------------------------------------------------------
# 删除模板
# ---------------------------------------------------------------------------

@pytest.mark.asyncio
async def test_delete_template_success(db_session, user_id):
    created = await PermissionTemplateService.create_template(
        db_session,
        PermissionTemplateCreate(name="待删除", template_type=TemplateType.CUSTOM, permissions=SAMPLE_PERMISSIONS),
        user_id,
    )

    await PermissionTemplateService.delete_template(db_session, created.id)
    assert await PermissionTemplateService.get_template(db_session, created.id) is None


@pytest.mark.asyncio
async def test_delete_system_template_raises(db_session):
    system_template = PermissionTemplate(
        name="系统模板2",
        template_type=TemplateType.ROLE,
        is_system=True,
        permissions=SAMPLE_PERMISSIONS,
    )
    db_session.add(system_template)
    await db_session.commit()
    await db_session.refresh(system_template)

    with pytest.raises(ValueError, match="不允许删除系统预设模板"):
        await PermissionTemplateService.delete_template(db_session, system_template.id)


@pytest.mark.asyncio
async def test_delete_nonexistent_template_raises(db_session):
    with pytest.raises(ValueError, match="不存在"):
        await PermissionTemplateService.delete_template(db_session, uuid.uuid4())