"""Admin 人物模板管理 API 测试（§19.8）。

验证系统模板的 CRUD、引用检查、权限隔离。
"""

from collections.abc import AsyncGenerator

import pytest
from httpx import ASGITransport, AsyncClient

from app.main import app


@pytest.fixture
async def admin_client(
    admin_headers: dict[str, str],
) -> AsyncGenerator[AsyncClient, None]:
    transport = ASGITransport(app=app)
    async with AsyncClient(
        transport=transport,
        base_url="http://test",
        headers=admin_headers,
    ) as http_client:
        yield http_client


@pytest.fixture
async def user_client(
    auth_headers: dict[str, str],
) -> AsyncGenerator[AsyncClient, None]:
    transport = ASGITransport(app=app)
    async with AsyncClient(
        transport=transport,
        base_url="http://test",
        headers=auth_headers,
    ) as http_client:
        yield http_client


@pytest.mark.asyncio
async def test_admin_list_templates(admin_client: AsyncClient) -> None:
    """管理员可以列出所有系统模板。"""
    resp = await admin_client.get("/api/v1/admin/characters/templates")
    assert resp.status_code == 200
    body = resp.json()
    assert isinstance(body, list)
    # 至少包含 default 模板
    keys = [t["key"] for t in body]
    assert "default" in keys


@pytest.mark.asyncio
async def test_admin_get_template(admin_client: AsyncClient) -> None:
    """管理员可以获取单个模板详情。"""
    # 先列出获取 key
    list_resp = await admin_client.get("/api/v1/admin/characters/templates")
    assert list_resp.status_code == 200
    templates = list_resp.json()
    if not templates:
        pytest.skip("无模板可用")
    key = templates[0]["key"]
    resp = await admin_client.get(
        f"/api/v1/admin/characters/templates/{key}",
    )
    assert resp.status_code == 200
    body = resp.json()
    assert body["key"] == key
    assert "profile" in body
    assert "model_policy" in body


@pytest.mark.asyncio
async def test_admin_create_template(admin_client: AsyncClient) -> None:
    """管理员可以创建新系统模板。"""
    payload = {
        "key": "test_create_char",
        "name": "测试人物",
        "display_name": "测试",
        "language": "zh-CN",
        "profile": {
            "description": "自动化测试创建",
            "speaking_style": "简洁",
        },
        "model_policy": {
            "memory_extraction_model_hint": "memory-extraction",
        },
    }
    resp = await admin_client.post(
        "/api/v1/admin/characters/templates",
        json=payload,
    )
    assert resp.status_code == 201, resp.text
    body = resp.json()
    assert body["key"] == "test_create_char"
    assert body["name"] == "测试人物"


@pytest.mark.asyncio
async def test_admin_create_duplicate_key(admin_client: AsyncClient) -> None:
    """重复 key 应返回 409。"""
    payload = {
        "key": "test_dup_key",
        "name": "首次",
    }
    resp = await admin_client.post(
        "/api/v1/admin/characters/templates",
        json=payload,
    )
    assert resp.status_code == 201
    # 重复创建
    resp2 = await admin_client.post(
        "/api/v1/admin/characters/templates",
        json=payload,
    )
    assert resp2.status_code == 409


@pytest.mark.asyncio
async def test_admin_update_template(admin_client: AsyncClient) -> None:
    """管理员可以部分更新模板。"""
    # 先创建
    key = "test_update_tpl"
    await admin_client.post(
        "/api/v1/admin/characters/templates",
        json={"key": key, "name": "原名"},
    )
    # 更新
    resp = await admin_client.patch(
        f"/api/v1/admin/characters/templates/{key}",
        json={"name": "新名", "profile": {"description": "新描述"}},
    )
    assert resp.status_code == 200
    body = resp.json()
    assert body["name"] == "新名"


@pytest.mark.asyncio
async def test_admin_delete_template(admin_client: AsyncClient) -> None:
    """管理员可以删除未被引用的模板。"""
    key = "test_del_tpl"
    resp = await admin_client.post(
        "/api/v1/admin/characters/templates",
        json={"key": key, "name": "待删除"},
    )
    assert resp.status_code == 201

    resp = await admin_client.delete(
        f"/api/v1/admin/characters/templates/{key}",
    )
    assert resp.status_code == 204

    # 确认已删除
    get_resp = await admin_client.get(
        f"/api/v1/admin/characters/templates/{key}",
    )
    assert get_resp.status_code == 404


@pytest.mark.asyncio
async def test_non_admin_cannot_list_templates(user_client: AsyncClient) -> None:
    """非管理员不能通过用户端 API 列出模板。"""
    resp = await user_client.get("/api/v1/characters/templates")
    assert resp.status_code in (403,)


@pytest.mark.asyncio
async def test_non_admin_cannot_create_from_template(
    user_client: AsyncClient,
) -> None:
    """非管理员不能带 template_key 创建角色。"""
    resp = await user_client.post(
        "/api/v1/characters",
        json={"name": "hacker_attempt", "template_key": "default"},
    )
    assert resp.status_code in (403,)


@pytest.mark.asyncio
async def test_admin_can_create_from_template(
    admin_client: AsyncClient,
) -> None:
    """管理员可以从模板创建角色。"""
    resp = await admin_client.post(
        "/api/v1/characters",
        json={"name": "admin_char_test", "template_key": "default"},
    )
    assert resp.status_code == 200, resp.text
    body = resp.json()
    assert body["status"] == "active"