package user

import (
	"context"
	"database/sql"
	"errors"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"math"
	"perms-system-server/internal/consts"
	"perms-system-server/internal/loaders"
	"perms-system-server/internal/middleware"
	deptModel "perms-system-server/internal/model/dept"
	userModel "perms-system-server/internal/model/user"
	"perms-system-server/internal/response"
	"perms-system-server/internal/svc"
	"perms-system-server/internal/testutil"
	"perms-system-server/internal/testutil/ctxhelper"
	"perms-system-server/internal/types"
	"strings"
	"sync"
	"testing"
	"time"
)

func insertTestUser(t *testing.T, ctx context.Context, username, password string) int64 {
	t.Helper()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	now := time.Now().Unix()
	res, err := svcCtx.SysUserModel.Insert(ctx, &userModel.SysUser{
		Username:           username,
		Password:           password,
		Nickname:           "test",
		Avatar:             sql.NullString{},
		Email:              username + "@test.com",
		Phone:              "13800000000",
		Remark:             "",
		DeptId:             0,
		IsSuperAdmin:       2,
		MustChangePassword: 2,
		Status:             1,
		CreateTime:         now,
		UpdateTime:         now,
	})
	require.NoError(t, err)
	id, _ := res.LastInsertId()
	return id
}

func insertTestUserFull(t *testing.T, ctx context.Context, u *userModel.SysUser) int64 {
	t.Helper()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	now := time.Now().Unix()
	if u.CreateTime == 0 {
		u.CreateTime = now
	}
	if u.UpdateTime == 0 {
		u.UpdateTime = now
	}
	res, err := svcCtx.SysUserModel.Insert(ctx, u)
	require.NoError(t, err)
	id, _ := res.LastInsertId()
	return id
}

func strPtr(s string) *string { return &s }

func int64Ptr(i int64) *int64 { return &i }

// TC-0134: 正常创建
func TestCreateUser_Success(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	logic := NewCreateUserLogic(ctx, svcCtx)
	resp, err := logic.CreateUser(&types.CreateUserReq{
		Username: username,
		Password: "Pass123456",
		Nickname: "测试用户",
		Email:    username + "@test.com",
		Phone:    "13800138000",
		Remark:   "集成测试",
		DeptId:   0,
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	assert.Greater(t, resp.Id, int64(0))

	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_user`", resp.Id) })

	user, err := svcCtx.SysUserModel.FindOne(ctx, resp.Id)
	require.NoError(t, err)
	assert.Equal(t, username, user.Username)
	assert.Equal(t, "测试用户", user.Nickname)
	assert.Equal(t, int64(1), user.Status)
	assert.Equal(t, int64(2), user.IsSuperAdmin)
}

// TC-0135: 用户名已存在(预检)
func TestCreateUser_UsernameExists(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	hashed := testutil.HashPassword("pass123")
	userId := insertTestUser(t, ctx, username, hashed)
	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_user`", userId) })

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: username,
		Password: "Pass456789",
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 409, codeErr.Code())
	assert.Equal(t, "用户名已存在", codeErr.Error())
}

// TC-0137: 非法email格式
func TestCreateUser_InvalidEmail(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: testutil.UniqueId(),
		Password: "Pass123456",
		Email:    "not-an-email",
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "邮箱格式不正确", codeErr.Error())
}

// TC-0138: 合法email
func TestCreateUser_ValidEmail(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	logic := NewCreateUserLogic(ctx, svcCtx)
	resp, err := logic.CreateUser(&types.CreateUserReq{
		Username: username,
		Password: "Pass123456",
		Email:    username + "@example.com",
	})
	require.NoError(t, err)
	require.NotNil(t, resp)

	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_user`", resp.Id) })

	user, err := svcCtx.SysUserModel.FindOne(ctx, resp.Id)
	require.NoError(t, err)
	assert.Equal(t, username+"@example.com", user.Email)
}

// TC-0139: email为空(可选)
func TestCreateUser_EmptyEmailSkipsValidation(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	logic := NewCreateUserLogic(ctx, svcCtx)
	resp, err := logic.CreateUser(&types.CreateUserReq{
		Username: username,
		Password: "Pass123456",
		Email:    "",
	})
	require.NoError(t, err)
	require.NotNil(t, resp)

	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_user`", resp.Id) })

	user, err := svcCtx.SysUserModel.FindOne(ctx, resp.Id)
	require.NoError(t, err)
	assert.Equal(t, "", user.Email)
}

// TC-0140: 非法phone格式
func TestCreateUser_InvalidPhone(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: testutil.UniqueId(),
		Password: "Pass123456",
		Phone:    "abc",
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "手机号格式不正确", codeErr.Error())
}

// TC-0141: 合法phone(国际)
func TestCreateUser_ValidPhone(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	logic := NewCreateUserLogic(ctx, svcCtx)
	resp, err := logic.CreateUser(&types.CreateUserReq{
		Username: username,
		Password: "Pass123456",
		Phone:    "13900139000",
	})
	require.NoError(t, err)
	require.NotNil(t, resp)

	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_user`", resp.Id) })

	user, err := svcCtx.SysUserModel.FindOne(ctx, resp.Id)
	require.NoError(t, err)
	assert.Equal(t, "13900139000", user.Phone)
}

// TC-0142: phone为空(可选)
func TestCreateUser_EmptyPhoneSkipsValidation(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	logic := NewCreateUserLogic(ctx, svcCtx)
	resp, err := logic.CreateUser(&types.CreateUserReq{
		Username: username,
		Password: "Pass123456",
		Phone:    "",
	})
	require.NoError(t, err)
	require.NotNil(t, resp)

	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_user`", resp.Id) })

	user, err := svcCtx.SysUserModel.FindOne(ctx, resp.Id)
	require.NoError(t, err)
	assert.Equal(t, "", user.Phone)
}

// TC-0143: 并发同username(TOCTOU)
func TestCreateUser_ConcurrentSameUsername(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()
	username := testutil.UniqueId()

	t.Cleanup(func() {
		testutil.CleanTableByField(ctx, conn, "`sys_user`", "username", username)
	})

	var wg sync.WaitGroup
	results := make(chan error, 2)
	for i := 0; i < 2; i++ {
		wg.Add(1)
		go func() {
			defer wg.Done()
			logic := NewCreateUserLogic(ctx, svcCtx)
			_, err := logic.CreateUser(&types.CreateUserReq{
				Username: username,
				Password: "Pass123456",
				Nickname: "并发测试用户",
			})
			results <- err
		}()
	}
	wg.Wait()
	close(results)

	var errs []error
	for err := range results {
		errs = append(errs, err)
	}
	require.Len(t, errs, 2)

	successCount := 0
	failCount := 0
	for _, err := range errs {
		if err == nil {
			successCount++
		} else {
			failCount++
			var codeErr *response.CodeError
			require.True(t, errors.As(err, &codeErr), "error should be CodeError, got: %v", err)
			assert.Equal(t, 409, codeErr.Code())
			assert.Equal(t, "用户名已存在", codeErr.Error())
		}
	}
	assert.Equal(t, 1, successCount)
	assert.Equal(t, 1, failCount)
}

// TC-0141: 合法phone(国际)
func TestCreateUser_ValidInternationalPhone(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := testutil.UniqueId()
	logic := NewCreateUserLogic(ctx, svcCtx)
	resp, err := logic.CreateUser(&types.CreateUserReq{
		Username: username,
		Password: "Pass123456",
		Phone:    "+8613800138000",
	})
	require.NoError(t, err)
	require.NotNil(t, resp)

	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_user`", resp.Id) })

	user, err := svcCtx.SysUserModel.FindOne(ctx, resp.Id)
	require.NoError(t, err)
	assert.Equal(t, "+8613800138000", user.Phone)
}

// TC-0145: 密码少于8字符
func TestCreateUser_PasswordTooShort(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: testutil.UniqueId(),
		Password: "Pas1234",
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "密码长度不能少于8个字符", codeErr.Error())
}

// TC-0146: 密码缺少大写字母
func TestCreateUser_PasswordNoUppercase(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)

	longPwd := "A" + strings.Repeat("a", 71) + "1"
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: testutil.UniqueId(),
		Password: longPwd,
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "密码长度不能超过72个字符", codeErr.Error())
}

// TC-0147: 密码缺少小写字母
func TestCreateUser_PasswordNoLowercase(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: testutil.UniqueId(),
		Password: "PASS123456",
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "密码必须包含大写字母、小写字母和数字", codeErr.Error())
}

// TC-0148: 密码缺少数字
func TestCreateUser_PasswordNoDigit(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: testutil.UniqueId(),
		Password: "Passpasspass",
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "密码必须包含大写字母、小写字母和数字", codeErr.Error())
}

// TC-0149: 密码超过72字符
func TestCreateUser_PasswordTooLong(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	longPwd := strings.Repeat("a", 73)
	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: testutil.UniqueId(),
		Password: longPwd,
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "密码长度不能超过72个字符", codeErr.Error())
}

// TC-0537: createUser非管理员拒绝
func TestCreateUser_MemberRejected(t *testing.T) {
	ctx := ctxhelper.MemberCtx("test_product")
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{Username: "test", Password: "Pass123456"})
	require.Error(t, err)
	var ce *response.CodeError
	require.True(t, errors.As(err, &ce))
	assert.Equal(t, 403, ce.Code())
}

// TC-0150: 用户名含特殊字符被拒绝
func TestCreateUser_UsernameInvalidChars(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: "user@name!",
		Password: "Pass123456",
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "用户名只能包含字母、数字和下划线，长度2-64个字符", codeErr.Error())
}

// TC-0151: 用户名太短(1字符)被拒绝
func TestCreateUser_UsernameTooShort(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: "a",
		Password: "Pass123456",
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "用户名只能包含字母、数字和下划线，长度2-64个字符", codeErr.Error())
}

// TC-0152: 用户名太长(65字符)被拒绝
func TestCreateUser_UsernameTooLong(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: strings.Repeat("a", 65),
		Password: "Pass123456",
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "用户名只能包含字母、数字和下划线，长度2-64个字符", codeErr.Error())
}

// TC-0153: 部门不存在被拒绝
func TestCreateUser_DeptNotExists(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: testutil.UniqueId(),
		Password: "Pass123456",
		DeptId:   999999999,
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "部门不存在", codeErr.Error())
}

// TC-0154: 昵称超过64字符被拒绝
func TestCreateUser_NicknameTooLong(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: testutil.UniqueId(),
		Password: "Pass123456",
		Nickname: strings.Repeat("n", 65),
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "昵称长度不能超过64个字符", codeErr.Error())
}

// TC-0155: 备注超过255字符被拒绝
func TestCreateUser_RemarkTooLong(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewCreateUserLogic(ctx, svcCtx)
	_, err := logic.CreateUser(&types.CreateUserReq{
		Username: testutil.UniqueId(),
		Password: "Pass123456",
		Remark:   strings.Repeat("r", 256),
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 400, codeErr.Code())
	assert.Equal(t, "备注长度不能超过255个字符", codeErr.Error())
}

// TC-0136: 带完整可选字段
func TestCreateUser_AllOptionalFields(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	now := time.Now().Unix()
	deptRes, err := svcCtx.SysDeptModel.Insert(ctx, &deptModel.SysDept{
		ParentId:   0,
		Name:       "tc0103_dept_" + testutil.UniqueId(),
		Path:       "/",
		Sort:       1,
		DeptType:   "NORMAL",
		Remark:     "",
		Status:     1,
		CreateTime: now,
		UpdateTime: now,
	})
	require.NoError(t, err)
	deptId, err := deptRes.LastInsertId()
	require.NoError(t, err)
	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_dept`", deptId) })

	username := testutil.UniqueId()
	logic := NewCreateUserLogic(ctx, svcCtx)
	resp, err := logic.CreateUser(&types.CreateUserReq{
		Username: username,
		Password: "Pass123456",
		Nickname: "全字段用户",
		Email:    username + "@example.com",
		Phone:    "13900001111",
		Remark:   "TC-0136完整字段",
		DeptId:   deptId,
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	assert.Greater(t, resp.Id, int64(0))

	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_user`", resp.Id) })

	user, err := svcCtx.SysUserModel.FindOne(ctx, resp.Id)
	require.NoError(t, err)
	assert.Equal(t, username, user.Username)
	assert.Equal(t, "全字段用户", user.Nickname)
	assert.Equal(t, username+"@example.com", user.Email)
	assert.Equal(t, "13900001111", user.Phone)
	assert.Equal(t, "TC-0136完整字段", user.Remark)
	assert.Equal(t, deptId, user.DeptId)
	assert.Equal(t, int64(1), user.Status)
	assert.Equal(t, int64(2), user.IsSuperAdmin)
}

func callerAdminCtx(callerUserId, deptId int64, deptPath string) context.Context {
	return middleware.WithUserDetails(context.Background(), &loaders.UserDetails{
		UserId:        callerUserId,
		Username:      "prod_admin_caller",
		IsSuperAdmin:  false,
		MemberType:    consts.MemberTypeAdmin,
		Status:        consts.StatusEnabled,
		ProductCode:   "test_product",
		DeptId:        deptId,
		DeptPath:      deptPath,
		MinPermsLevel: math.MaxInt64,
	})
}

// TC-0994: 产品 ADMIN 为非自己管辖部门创建用户必须 403。
func TestCreateUser_MN4_AdminCannotCreateOutsideDeptSubtree(t *testing.T) {
	bootstrap := context.Background()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	callerDeptId := insertTestDeptForScope(t, bootstrap, svcCtx, "mn4_caller", "/100/")
	outsideDeptId := insertTestDeptForScope(t, bootstrap, svcCtx, "mn4_outside", "/999/")
	t.Cleanup(func() {
		testutil.CleanTable(bootstrap, conn, "`sys_dept`", callerDeptId, outsideDeptId)
	})

	adminCtx := callerAdminCtx(777771, callerDeptId, "/100/")
	_, err := NewCreateUserLogic(adminCtx, svcCtx).CreateUser(&types.CreateUserReq{
		Username: "mn4_seed_" + testutil.UniqueId(),
		Password: "Pass123456",
		DeptId:   outsideDeptId,
	})
	require.Error(t, err)

	var ce *response.CodeError
	require.True(t, errors.As(err, &ce))
	assert.Equal(t, 403, ce.Code(),
		"产品 ADMIN 跨部门树创建用户必须 403，防止占用关键用户名等 AddMember 合谋挂进产品")
	assert.Contains(t, ce.Error(), "无权在非自己管辖的部门下创建用户")
}

// TC-0995:  正向 —— 产品 ADMIN 在自己子树下的部门创建用户放行。
func TestCreateUser_MN4_AdminCanCreateInsideDeptSubtree(t *testing.T) {
	bootstrap := context.Background()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	callerDeptId := insertTestDeptForScope(t, bootstrap, svcCtx, "mn4_ok_caller", "/200/")
	childDeptId := insertTestDeptForScope(t, bootstrap, svcCtx, "mn4_ok_child", "/200/1/")
	t.Cleanup(func() {
		testutil.CleanTable(bootstrap, conn, "`sys_dept`", callerDeptId, childDeptId)
	})

	adminCtx := callerAdminCtx(777772, callerDeptId, "/200/")
	username := "mn4ok_" + testutil.UniqueId()
	resp, err := NewCreateUserLogic(adminCtx, svcCtx).CreateUser(&types.CreateUserReq{
		Username: username,
		Password: "Pass123456",
		DeptId:   childDeptId,
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	t.Cleanup(func() { testutil.CleanTable(bootstrap, conn, "`sys_user`", resp.Id) })

	user, err := svcCtx.SysUserModel.FindOne(bootstrap, resp.Id)
	require.NoError(t, err)
	assert.Equal(t, username, user.Username)
	assert.Equal(t, childDeptId, user.DeptId, "用户必须真实落在指定子部门")
}

// TC-0996: SuperAdmin 可跨一切部门（含 DeptId=0），继续允许创建系统级账号。
func TestCreateUser_MN4_SuperAdminCanCreateAnywhere(t *testing.T) {
	bootstrap := context.Background()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	randomDeptId := insertTestDeptForScope(t, bootstrap, svcCtx, "mn4_sa", "/1000/")
	t.Cleanup(func() {
		testutil.CleanTable(bootstrap, conn, "`sys_dept`", randomDeptId)
	})

	// A) 超管创建在任意部门
	usernameDept := "mn4sa_dept_" + testutil.UniqueId()
	resp, err := NewCreateUserLogic(ctxhelper.SuperAdminCtx(), svcCtx).CreateUser(&types.CreateUserReq{
		Username: usernameDept,
		Password: "Pass123456",
		DeptId:   randomDeptId,
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	t.Cleanup(func() { testutil.CleanTable(bootstrap, conn, "`sys_user`", resp.Id) })

	// B) 超管创建 DeptId=0 的系统级账号（历史跨组织账号语义保留）
	usernameZero := "mn4sa_zero_" + testutil.UniqueId()
	respZero, err := NewCreateUserLogic(ctxhelper.SuperAdminCtx(), svcCtx).CreateUser(&types.CreateUserReq{
		Username: usernameZero,
		Password: "Pass123456",
		DeptId:   0,
	})
	require.NoError(t, err)
	require.NotNil(t, respZero)
	t.Cleanup(func() { testutil.CleanTable(bootstrap, conn, "`sys_user`", respZero.Id) })
}

// TC-0997: 非超管 caller 的 DeptPath 为空时必须 403，不得在部门树外开口。
func TestCreateUser_MN4_EmptyCallerDeptPathRejected(t *testing.T) {
	bootstrap := context.Background()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	dstDeptId := insertTestDeptForScope(t, bootstrap, svcCtx, "mn4_empty", "/500/")
	t.Cleanup(func() {
		testutil.CleanTable(bootstrap, conn, "`sys_dept`", dstDeptId)
	})

	// caller 是产品 ADMIN 但历史账号 DeptPath=="" —— 必须 403 "未归属任何部门"
	adminCtx := callerAdminCtx(777773, 0, "")
	_, err := NewCreateUserLogic(adminCtx, svcCtx).CreateUser(&types.CreateUserReq{
		Username: "mn4empty_" + testutil.UniqueId(),
		Password: "Pass123456",
		DeptId:   dstDeptId,
	})
	require.Error(t, err)
	var ce *response.CodeError
	require.True(t, errors.As(err, &ce))
	assert.Equal(t, 403, ce.Code(),
		"caller.DeptPath=='' 属于 legacy 账号，fail-close 不允许创建用户")
	assert.Contains(t, ce.Error(), "您未归属任何部门")
}

// TC-0998: 非超管 caller 传 DeptId=0 必须 400（禁止非超管创建"无部门"账号）。
func TestCreateUser_MN4_NonSuperAdminMustSpecifyDept(t *testing.T) {
	bootstrap := context.Background()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	callerDeptId := insertTestDeptForScope(t, bootstrap, svcCtx, "mn4_mustspec", "/300/")
	t.Cleanup(func() {
		testutil.CleanTable(bootstrap, conn, "`sys_dept`", callerDeptId)
	})

	adminCtx := callerAdminCtx(777774, callerDeptId, "/300/")
	_, err := NewCreateUserLogic(adminCtx, svcCtx).CreateUser(&types.CreateUserReq{
		Username: "mn4must_" + testutil.UniqueId(),
		Password: "Pass123456",
		DeptId:   0,
	})
	require.Error(t, err)
	var ce *response.CodeError
	require.True(t, errors.As(err, &ce))
	assert.Equal(t, 400, ce.Code(),
		"非超管 CreateUser 必须显式指定部门，禁止在部门树外创建账号")
	assert.Contains(t, ce.Error(), "必须指定部门")
}

// TC-0999: 目标部门已停用时 CreateUser 必须 400 "目标部门已停用"，与 UpdateDept 闭环。
func TestCreateUser_LN2_TargetDeptDisabled(t *testing.T) {
	bootstrap := context.Background()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	now := time.Now().Unix()
	disRes, err := svcCtx.SysDeptModel.Insert(bootstrap, &deptModel.SysDept{
		ParentId: 0, Name: "ln2_dis_" + testutil.UniqueId(), Path: "/900/", Sort: 0,
		DeptType: "NORMAL", Remark: "", Status: 2, CreateTime: now, UpdateTime: now,
	})
	require.NoError(t, err)
	disabledId, _ := disRes.LastInsertId()
	t.Cleanup(func() {
		testutil.CleanTable(bootstrap, conn, "`sys_dept`", disabledId)
	})

	// 超管也必须被拒绝： 的规则针对"所有调用方"，防止 disabled 部门被意外重新填人
	_, err = NewCreateUserLogic(ctxhelper.SuperAdminCtx(), svcCtx).CreateUser(&types.CreateUserReq{
		Username: "ln2_" + testutil.UniqueId(),
		Password: "Pass123456",
		DeptId:   disabledId,
	})
	require.Error(t, err)
	var ce *response.CodeError
	require.True(t, errors.As(err, &ce))
	assert.Equal(t, 400, ce.Code())
	assert.Equal(t, "目标部门已停用", ce.Error(),
		"目标部门 status!=Enabled 必须拒绝，与 UpdateDept 禁用语义闭环")
}

// TC-1100: DeptId 负值（-1 / MinInt64）在所有类型 caller 面前都必须被 400 拒绝，
// 禁止构造 "sys_user.deptId = 负数" 的僵尸账号（FindOne 永远 NotFound，部门树永远查不到）。
func TestCreateUser_NegativeDeptIdRejected(t *testing.T) {
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	cases := []struct {
		name    string
		ctx     context.Context
		deptId  int64
		wantMsg string
	}{
		{"super_admin_negative_one", ctxhelper.SuperAdminCtx(), -1, "部门ID必须为非负整数"},
		{"super_admin_min_int64", ctxhelper.SuperAdminCtx(), math.MinInt64, "部门ID必须为非负整数"},
	}

	for _, tc := range cases {
		tc := tc
		t.Run(tc.name, func(t *testing.T) {
			_, err := NewCreateUserLogic(tc.ctx, svcCtx).CreateUser(&types.CreateUserReq{
				Username: "neg_dept_" + testutil.UniqueId(),
				Password: "Pass123456",
				DeptId:   tc.deptId,
			})
			require.Error(t, err, "负值 DeptId 必须被拒绝")

			var ce *response.CodeError
			require.True(t, errors.As(err, &ce))
			assert.Equal(t, 400, ce.Code(),
				"必须 400 而不是 5xx / 404：让调用方知道是入参不合法，不是 DB/权限问题")
			assert.Equal(t, tc.wantMsg, ce.Error())
		})
	}
}

func TestCreateUser_DefaultsMustChangePasswordToYes(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

	username := "lcp_" + testutil.UniqueId()
	resp, err := NewCreateUserLogic(ctx, svcCtx).CreateUser(&types.CreateUserReq{
		Username: username,
		Password: "InitPass@123",
		Nickname: "初始口令校验",
	})
	require.NoError(t, err)
	require.NotNil(t, resp)
	t.Cleanup(func() { testutil.CleanTable(ctx, conn, "`sys_user`", resp.Id) })

	u, err := svcCtx.SysUserModel.FindOne(ctx, resp.Id)
	require.NoError(t, err)
	assert.Equal(t, int64(consts.MustChangePasswordYes), u.MustChangePassword,
		"管理员代填初始密码的用户必须被强制下次登录改密，落盘为 Yes")
}