package user

import (
	"context"
	"errors"
	"testing"

	"perms-system-server/internal/consts"
	"perms-system-server/internal/loaders"
	"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"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// TC-0112: 正常更新
func TestUpdateUser_Success(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:       userId,
		Nickname: strPtr("新昵称"),
		Email:    strPtr("new@example.com"),
		Phone:    strPtr("13900139000"),
		Remark:   strPtr("更新备注"),
		DeptId:   int64Ptr(5),
	})
	require.NoError(t, err)

	user, err := svcCtx.SysUserModel.FindOne(ctx, userId)
	require.NoError(t, err)
	assert.Equal(t, "新昵称", user.Nickname)
	assert.Equal(t, "new@example.com", user.Email)
	assert.Equal(t, "13900139000", user.Phone)
	assert.Equal(t, "更新备注", user.Remark)
	assert.Equal(t, int64(5), user.DeptId)
}

// TC-0113: 不存在
func TestUpdateUser_NotFound(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:       999999999,
		Nickname: strPtr("ghost"),
	})
	require.Error(t, err)

	var codeErr *response.CodeError
	require.True(t, errors.As(err, &codeErr))
	assert.Equal(t, 404, codeErr.Code())
	assert.Equal(t, "用户不存在", codeErr.Error())
}

// TC-0114: 仅传id
func TestUpdateUser_OnlyId_NothingChanges(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	before, err := svcCtx.SysUserModel.FindOne(ctx, userId)
	require.NoError(t, err)

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err = logic.UpdateUser(&types.UpdateUserReq{Id: userId})
	require.NoError(t, err)

	after, err := svcCtx.SysUserModel.FindOne(ctx, userId)
	require.NoError(t, err)
	assert.Equal(t, before.Nickname, after.Nickname)
	assert.Equal(t, before.Email, after.Email)
	assert.Equal(t, before.Phone, after.Phone)
	assert.Equal(t, before.DeptId, after.DeptId)
}

// TC-0115: 清空nickname
func TestUpdateUser_ClearNickname(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:       userId,
		Nickname: strPtr(""),
	})
	require.NoError(t, err)

	user, err := svcCtx.SysUserModel.FindOne(ctx, userId)
	require.NoError(t, err)
	assert.Equal(t, "", user.Nickname)
}

// TC-0116: 清空email
func TestUpdateUser_ClearEmail(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:    userId,
		Email: strPtr(""),
	})
	require.NoError(t, err)

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

// TC-0118: 非法email格式
func TestUpdateUser_InvalidEmail(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:    userId,
		Email: strPtr("bad-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-0122: DeptId设为0(取消部门)
func TestUpdateUser_DeptIdZero_Clear(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:     userId,
		DeptId: int64Ptr(5),
	})
	require.NoError(t, err)

	err = logic.UpdateUser(&types.UpdateUserReq{
		Id:     userId,
		DeptId: int64Ptr(0),
	})
	require.NoError(t, err)

	user, err := svcCtx.SysUserModel.FindOne(ctx, userId)
	require.NoError(t, err)
	assert.Equal(t, int64(0), user.DeptId)
}

// TC-0123: DeptId设为正值
func TestUpdateUser_DeptIdSet(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:     userId,
		DeptId: int64Ptr(5),
	})
	require.NoError(t, err)

	user, err := svcCtx.SysUserModel.FindOne(ctx, userId)
	require.NoError(t, err)
	assert.Equal(t, int64(5), user.DeptId)
}

// TC-0124: DeptId不传(nil)
func TestUpdateUser_NilDeptId_Unchanged(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:     userId,
		DeptId: int64Ptr(7),
	})
	require.NoError(t, err)

	err = logic.UpdateUser(&types.UpdateUserReq{
		Id:       userId,
		Nickname: strPtr("changed"),
	})
	require.NoError(t, err)

	user, err := svcCtx.SysUserModel.FindOne(ctx, userId)
	require.NoError(t, err)
	assert.Equal(t, int64(7), user.DeptId)
	assert.Equal(t, "changed", user.Nickname)
}

// TC-0117: 清空remark
func TestUpdateUser_ClearRemark(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:     userId,
		Remark: strPtr("some remark"),
	})
	require.NoError(t, err)

	err = logic.UpdateUser(&types.UpdateUserReq{
		Id:     userId,
		Remark: strPtr(""),
	})
	require.NoError(t, err)

	user, err := svcCtx.SysUserModel.FindOne(ctx, userId)
	require.NoError(t, err)
	assert.Equal(t, "", user.Remark)
}

// TC-0120: 合法phone
func TestUpdateUser_ValidInternationalPhone(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:    userId,
		Phone: strPtr("+8613800138000"),
	})
	require.NoError(t, err)

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

// TC-0119: 非法phone格式
func TestUpdateUser_InvalidPhone(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{
		Id:    userId,
		Phone: strPtr("12345"),
	})
	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-0121: 不传email(nil)
func TestUpdateUser_NilEmail_Unchanged(t *testing.T) {
	ctx := ctxhelper.SuperAdminCtx()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	conn := testutil.GetTestSqlConn()

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

	before, err := svcCtx.SysUserModel.FindOne(ctx, userId)
	require.NoError(t, err)
	originalEmail := before.Email

	logic := NewUpdateUserLogic(ctx, svcCtx)
	err = logic.UpdateUser(&types.UpdateUserReq{
		Id:       userId,
		Nickname: strPtr("changed-nick"),
	})
	require.NoError(t, err)

	after, err := svcCtx.SysUserModel.FindOne(ctx, userId)
	require.NoError(t, err)
	assert.Equal(t, originalEmail, after.Email)
	assert.Equal(t, "changed-nick", after.Nickname)
}

// TC-0491: 非本人非超管修改拒绝
func TestUpdateUser_NonSelfNonSuperAdminRejected(t *testing.T) {
	ctx := ctxhelper.MemberCtx("test_product")
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{Id: 999, Nickname: strPtr("hacked")})
	require.Error(t, err)
	var ce *response.CodeError
	require.True(t, errors.As(err, &ce))
	assert.Equal(t, 403, ce.Code())
	assert.Contains(t, ce.Error(), "仅允许修改自己的信息或超管操作")
}

// TC-0511: updateUser自己修改DeptId被拒绝
func TestUpdateUser_SelfEditDeptIdRejected(t *testing.T) {
	ctx := ctxhelper.CustomCtx(&loaders.UserDetails{
		UserId:   100,
		Username: "self_user",
		Status:   consts.StatusEnabled,
	})
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{Id: 100, DeptId: int64Ptr(5)})
	require.Error(t, err)
	var ce *response.CodeError
	require.True(t, errors.As(err, &ce))
	assert.Equal(t, 403, ce.Code())
	assert.Equal(t, "不允许修改自己的部门和状态", ce.Error())
}

// TC-0512: updateUser自己修改Status被拒绝
func TestUpdateUser_SelfEditStatusRejected(t *testing.T) {
	ctx := ctxhelper.CustomCtx(&loaders.UserDetails{
		UserId:   100,
		Username: "self_user",
		Status:   consts.StatusEnabled,
	})
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{Id: 100, Status: 2})
	require.Error(t, err)
	var ce *response.CodeError
	require.True(t, errors.As(err, &ce))
	assert.Equal(t, 403, ce.Code())
	assert.Equal(t, "不允许修改自己的部门和状态", ce.Error())
}

// TC-0513: updateUser未登录被拒绝
func TestUpdateUser_NotLoggedInRejected(t *testing.T) {
	ctx := context.Background()
	svcCtx := svc.NewServiceContext(testutil.GetTestConfig())
	logic := NewUpdateUserLogic(ctx, svcCtx)
	err := logic.UpdateUser(&types.UpdateUserReq{Id: 1, Nickname: strPtr("hacked")})
	require.Error(t, err)
	var ce *response.CodeError
	require.True(t, errors.As(err, &ce))
	assert.Equal(t, 401, ce.Code())
	assert.Equal(t, "未登录", ce.Error())
}