"""用户管理端点完整测试 — user.py

覆盖端点:
  GET    /api/v1/users            列表（支持 role / is_active 筛选）
  POST   /api/v1/users            创建用户
  GET    /api/v1/users/{user_id}  获取单个用户
  PUT    /api/v1/users/{user_id}  更新用户
  DELETE /api/v1/users/{user_id}  删除用户
"""
import pytest
from httpx import AsyncClient

from tests.conftest import auth_header


# ═══════════════════════════════════════════════════════════════
# GET /users — 列表
# ═══════════════════════════════════════════════════════════════


class TestListUsers:

    async def test_list_all_users(self, client: AsyncClient, admin_user, admin_token):
        """管理员可以获取全部用户列表。"""
        resp = await client.get("/api/v1/users", headers=auth_header(admin_token))
        assert resp.status_code == 200
        data = resp.json()
        assert isinstance(data, list)
        assert len(data) >= 1

    async def test_list_users_role_filter(self, client: AsyncClient, admin_user, admin_token):
        """按 role 筛选用户。"""
        resp = await client.get(
            "/api/v1/users?role=admin",
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 200
        for u in resp.json():
            assert u["role"] == "admin"

    async def test_list_users_is_active_filter(
        self, client: AsyncClient, admin_user, disabled_user, admin_token
    ):
        """按 is_active 筛选用户。"""
        resp = await client.get(
            "/api/v1/users?is_active=false",
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 200
        for u in resp.json():
            assert u["is_active"] is False

    async def test_list_users_combined_filters(
        self, client: AsyncClient, admin_user, disabled_user, admin_token
    ):
        """同时使用 role + is_active 筛选。"""
        resp = await client.get(
            "/api/v1/users?role=developer&is_active=false",
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 200
        for u in resp.json():
            assert u["role"] == "developer"
            assert u["is_active"] is False

    async def test_list_users_empty_result(self, client: AsyncClient, admin_token):
        """不存在的角色返回空列表。"""
        resp = await client.get(
            "/api/v1/users?role=guest",
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 200
        assert resp.json() == []

    async def test_list_users_non_admin_forbidden(
        self, client: AsyncClient, developer_token
    ):
        """developer 角色无权访问用户列表。"""
        resp = await client.get(
            "/api/v1/users", headers=auth_header(developer_token)
        )
        assert resp.status_code == 403

    async def test_list_users_guest_forbidden(
        self, client: AsyncClient, guest_token
    ):
        """guest 角色无权访问用户列表。"""
        resp = await client.get(
            "/api/v1/users", headers=auth_header(guest_token)
        )
        assert resp.status_code == 403

    async def test_list_users_unauthenticated(self, client: AsyncClient):
        """未认证请求返回 401。"""
        resp = await client.get("/api/v1/users")
        assert resp.status_code == 401


# ═══════════════════════════════════════════════════════════════
# POST /users — 创建
# ═══════════════════════════════════════════════════════════════


class TestCreateUser:

    async def test_create_user_success(self, client: AsyncClient, admin_token):
        """成功创建用户。"""
        resp = await client.post(
            "/api/v1/users",
            headers=auth_header(admin_token),
            json={
                "username": "newuser",
                "display_name": "新用户",
                "password": "secure123",
                "role": "developer",
            },
        )
        assert resp.status_code == 201
        data = resp.json()
        assert data["username"] == "newuser"
        assert data["display_name"] == "新用户"
        assert data["role"] == "developer"
        assert "id" in data
        assert "hashed_password" not in data

    async def test_create_user_with_all_fields(self, client: AsyncClient, admin_token):
        """创建用户时填写所有可选字段。"""
        resp = await client.post(
            "/api/v1/users",
            headers=auth_header(admin_token),
            json={
                "username": "fulluser",
                "display_name": "完整用户",
                "password": "secure123",
                "email": "full@example.com",
                "phone": "13800138000",
                "role": "dba",
            },
        )
        assert resp.status_code == 201
        data = resp.json()
        assert data["email"] == "full@example.com"
        assert data["phone"] == "13800138000"
        assert data["role"] == "dba"

    async def test_create_duplicate_username(
        self, client: AsyncClient, admin_user, admin_token
    ):
        """用户名重复返回 400。"""
        resp = await client.post(
            "/api/v1/users",
            headers=auth_header(admin_token),
            json={
                "username": "admin",
                "display_name": "重复",
                "password": "123456",
                "role": "developer",
            },
        )
        assert resp.status_code == 400
        assert "已存在" in resp.json()["detail"]

    async def test_create_user_short_password(self, client: AsyncClient, admin_token):
        """密码少于 6 位返回 422。"""
        resp = await client.post(
            "/api/v1/users",
            headers=auth_header(admin_token),
            json={
                "username": "shortpw",
                "display_name": "短密码",
                "password": "123",
                "role": "developer",
            },
        )
        assert resp.status_code == 422

    async def test_create_user_invalid_role(self, client: AsyncClient, admin_token):
        """无效角色返回 422。"""
        resp = await client.post(
            "/api/v1/users",
            headers=auth_header(admin_token),
            json={
                "username": "badrole",
                "display_name": "坏角色",
                "password": "123456",
                "role": "superadmin",
            },
        )
        assert resp.status_code == 422

    async def test_create_user_missing_username(self, client: AsyncClient, admin_token):
        """缺少 username 字段返回 422。"""
        resp = await client.post(
            "/api/v1/users",
            headers=auth_header(admin_token),
            json={
                "display_name": "无用户名",
                "password": "123456",
                "role": "developer",
            },
        )
        assert resp.status_code == 422

    async def test_create_user_non_admin_forbidden(
        self, client: AsyncClient, developer_token
    ):
        """developer 角色无权创建用户。"""
        resp = await client.post(
            "/api/v1/users",
            headers=auth_header(developer_token),
            json={
                "username": "unauthorized",
                "display_name": "不应成功",
                "password": "123456",
                "role": "developer",
            },
        )
        assert resp.status_code == 403

    async def test_create_user_default_role(self, client: AsyncClient, admin_token):
        """不传 role 时默认为 developer。"""
        resp = await client.post(
            "/api/v1/users",
            headers=auth_header(admin_token),
            json={
                "username": "defaultrole",
                "display_name": "默认角色",
                "password": "123456",
            },
        )
        assert resp.status_code == 201
        assert resp.json()["role"] == "developer"


# ═══════════════════════════════════════════════════════════════
# GET /users/{user_id} — 获取单个
# ═══════════════════════════════════════════════════════════════


class TestGetUser:

    async def test_get_user_success(
        self, client: AsyncClient, admin_user, admin_token
    ):
        """成功获取单个用户。"""
        resp = await client.get(
            f"/api/v1/users/{admin_user.id}",
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 200
        assert resp.json()["username"] == "admin"

    async def test_get_user_nonexistent(self, client: AsyncClient, admin_token):
        """查询不存在的用户返回 404。"""
        resp = await client.get(
            "/api/v1/users/9999",
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 404
        assert "不存在" in resp.json()["detail"]

    async def test_get_user_non_admin_forbidden(
        self, client: AsyncClient, admin_user, developer_token
    ):
        """developer 角色无权查看用户详情。"""
        resp = await client.get(
            f"/api/v1/users/{admin_user.id}",
            headers=auth_header(developer_token),
        )
        assert resp.status_code == 403

    async def test_get_user_unauthenticated(self, client: AsyncClient, admin_user):
        """未认证请求返回 401。"""
        resp = await client.get(f"/api/v1/users/{admin_user.id}")
        assert resp.status_code == 401


# ═══════════════════════════════════════════════════════════════
# PUT /users/{user_id} — 更新
# ═══════════════════════════════════════════════════════════════


class TestUpdateUser:

    async def test_update_display_name(
        self, client: AsyncClient, admin_user, admin_token
    ):
        """更新 display_name。"""
        resp = await client.put(
            f"/api/v1/users/{admin_user.id}",
            headers=auth_header(admin_token),
            json={"display_name": "管理员改名"},
        )
        assert resp.status_code == 200
        assert resp.json()["display_name"] == "管理员改名"

    async def test_update_email(
        self, client: AsyncClient, admin_user, admin_token
    ):
        """更新 email。"""
        resp = await client.put(
            f"/api/v1/users/{admin_user.id}",
            headers=auth_header(admin_token),
            json={"email": "admin@example.com"},
        )
        assert resp.status_code == 200
        assert resp.json()["email"] == "admin@example.com"

    async def test_update_role(
        self, client: AsyncClient, admin_user, dba_user, admin_token
    ):
        """更新用户角色。"""
        resp = await client.put(
            f"/api/v1/users/{dba_user.id}",
            headers=auth_header(admin_token),
            json={"role": "developer"},
        )
        assert resp.status_code == 200
        assert resp.json()["role"] == "developer"

    async def test_update_is_active(
        self, client: AsyncClient, dba_user, admin_token
    ):
        """禁用用户。"""
        resp = await client.put(
            f"/api/v1/users/{dba_user.id}",
            headers=auth_header(admin_token),
            json={"is_active": False},
        )
        assert resp.status_code == 200
        assert resp.json()["is_active"] is False

    async def test_update_multiple_fields(
        self, client: AsyncClient, dba_user, admin_token
    ):
        """同时更新多个字段。"""
        resp = await client.put(
            f"/api/v1/users/{dba_user.id}",
            headers=auth_header(admin_token),
            json={
                "display_name": "DBA改名",
                "phone": "13900139000",
            },
        )
        assert resp.status_code == 200
        data = resp.json()
        assert data["display_name"] == "DBA改名"
        assert data["phone"] == "13900139000"

    async def test_update_nonexistent_user(self, client: AsyncClient, admin_token):
        """更新不存在的用户返回 404。"""
        resp = await client.put(
            "/api/v1/users/9999",
            headers=auth_header(admin_token),
            json={"display_name": "不存在"},
        )
        assert resp.status_code == 404

    async def test_update_invalid_role(
        self, client: AsyncClient, admin_user, admin_token
    ):
        """无效角色返回 422。"""
        resp = await client.put(
            f"/api/v1/users/{admin_user.id}",
            headers=auth_header(admin_token),
            json={"role": "superadmin"},
        )
        assert resp.status_code == 422

    async def test_update_non_admin_forbidden(
        self, client: AsyncClient, admin_user, developer_token
    ):
        """developer 角色无权更新用户。"""
        resp = await client.put(
            f"/api/v1/users/{admin_user.id}",
            headers=auth_header(developer_token),
            json={"display_name": "越权"},
        )
        assert resp.status_code == 403


# ═══════════════════════════════════════════════════════════════
# DELETE /users/{user_id} — 删除
# ═══════════════════════════════════════════════════════════════


class TestDeleteUser:

    async def test_delete_user_success(
        self, client: AsyncClient, dba_user, admin_token
    ):
        """成功删除用户。"""
        resp = await client.delete(
            f"/api/v1/users/{dba_user.id}",
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 200
        assert "已删除" in resp.json()["message"]

        # 确认已被删除
        resp2 = await client.get(
            f"/api/v1/users/{dba_user.id}",
            headers=auth_header(admin_token),
        )
        assert resp2.status_code == 404

    async def test_delete_self(
        self, client: AsyncClient, admin_user, admin_token
    ):
        """不能删除自己。"""
        resp = await client.delete(
            f"/api/v1/users/{admin_user.id}",
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 400
        assert "不能删除自己" in resp.json()["detail"]

    async def test_delete_nonexistent_user(self, client: AsyncClient, admin_token):
        """删除不存在的用户返回 404。"""
        resp = await client.delete(
            "/api/v1/users/9999",
            headers=auth_header(admin_token),
        )
        assert resp.status_code == 404

    async def test_delete_non_admin_forbidden(
        self, client: AsyncClient, admin_user, developer_token
    ):
        """developer 角色无权删除用户。"""
        resp = await client.delete(
            f"/api/v1/users/{admin_user.id}",
            headers=auth_header(developer_token),
        )
        assert resp.status_code == 403

    async def test_delete_unauthenticated(self, client: AsyncClient, admin_user):
        """未认证请求返回 401。"""
        resp = await client.delete(f"/api/v1/users/{admin_user.id}")
        assert resp.status_code == 401

    async def test_delete_guest_forbidden(
        self, client: AsyncClient, admin_user, guest_token
    ):
        """guest 角色无权删除用户。"""
        resp = await client.delete(
            f"/api/v1/users/{admin_user.id}",
            headers=auth_header(guest_token),
        )
        assert resp.status_code == 403