package service

import (
	"context"
	"crypto/hmac"
	"crypto/sha1"
	"encoding/base32"
	"encoding/binary"
	"fmt"
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"gorm.io/gorm"

	"github.com/gochat/gochat/internal/auth"
	"github.com/gochat/gochat/internal/model"
	"github.com/gochat/gochat/pkg/crypto"
)

// ========== Helper: create confirmed user with account ==========

// createConfirmedUserWithAccount 创建已确认邮箱的用户，并为其分配一个账户。
// 返回 user、account 和 accountUser 关联记录。
func createConfirmedUserWithAccount(t *testing.T, db *gorm.DB, email, password, name string) (*model.User, *model.Account, *model.AccountUser) {
	t.Helper()

	account := &model.Account{Name: name + "'s Account", Status: "active"}
	require.NoError(t, db.Create(account).Error, "无法创建账户")

	digest, err := crypto.HashPassword(password)
	require.NoError(t, err, "无法 hash 密码")

	now := time.Now()
	user := &model.User{
		AccountID:      account.ID,
		Name:           name,
		Email:          email,
		PasswordDigest: digest,
		Password:       digest,
		Provider:       "email",
		Active:         true,
		ConfirmedAt:    &now,
	}
	require.NoError(t, db.Create(user).Error, "无法创建用户")

	accountUser := &model.AccountUser{
		UserID:    user.ID,
		AccountID: account.ID,
		Role:      "administrator",
	}
	require.NoError(t, db.Create(accountUser).Error, "无法创建 AccountUser")

	return user, account, accountUser
}

// ========== TOTP code generation helper ==========

// computeTOTPCode 根据 secret 和时间步计算 6 位 TOTP code (HMAC-SHA1)。
func computeTOTPCode(secret string, timeStep uint64, digits int) string {
	// Decode base32 secret (no padding)
	secretBytes, err := decodeBase32NoPadding(secret)
	if err != nil {
		// fallback: 如果 secret 无法 decode，返回 000000
		return "000000"
	}

	// 时间步编码为 8 字节大端
	stepBytes := make([]byte, 8)
	binary.BigEndian.PutUint64(stepBytes, timeStep)

	// HMAC-SHA1
	hmacResult := hmac.New(sha1.New, secretBytes)
	hmacResult.Write(stepBytes)
	hash := hmacResult.Sum(nil)

	// Dynamic truncation per RFC 4226
	offset := hash[len(hash)-1] & 0x0f
	code := binary.BigEndian.Uint32(hash[offset:offset+4]) & 0x7fffffff

	// 取 digits 位数字
	codeMod := code % uint32(pow10(digits))

	return fmt.Sprintf("%0*d", digits, codeMod)
}

// decodeBase32NoPadding 解码 base32 字符串（无 padding）。
func decodeBase32NoPadding(s string) ([]byte, error) {
	return base32.StdEncoding.WithPadding(base32.NoPadding).DecodeString(s)
}

// pow10 计算 10^n (简单整数幂)。
func pow10(n int) uint32 {
	result := uint32(1)
	for i := 0; i < n; i++ {
		result *= 10
	}
	return result
}

// generateTOTPCode 根据 secret 和当前时间生成 TOTP code。
func generateTOTPCode(secret string) string {
	cfg := auth.DefaultTOTPConfig()
	timeStep := uint64(time.Now().Unix()) / cfg.Period
	return computeTOTPCode(secret, timeStep, cfg.Digits)
}

// ========== Login Tests ==========

// TestAuthService_Login_Success 验证正常登录流程返回 token pair
func TestAuthService_Login_Success(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	user, _, _ := createConfirmedUserWithAccount(t, svc.db, "login@example.com", "password123", "LoginUser")

	output, err := svc.Login(ctx, &LoginInput{Email: "login@example.com", Password: "password123"})
	require.NoError(t, err, "Login 不应返回错误")
	assert.NotNil(t, output.User)
	assert.NotNil(t, output.TokenPair)
	assert.NotEmpty(t, output.TokenPair.AccessToken)
	assert.NotEmpty(t, output.TokenPair.RefreshToken)
	assert.Equal(t, user.ID, output.User.ID)
	assert.True(t, output.User.SignInCount >= 1)
}

// TestAuthService_Login_WrongPassword 验证密码错误时返回错误
func TestAuthService_Login_WrongPassword(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	_, _, _ = createConfirmedUserWithAccount(t, svc.db, "wrongpw@example.com", "password123", "WrongPWUser")

	output, err := svc.Login(ctx, &LoginInput{Email: "wrongpw@example.com", Password: "wrong-password"})
	assert.Nil(t, output)
	assert.EqualError(t, err, "invalid email or password")
}

// TestAuthService_Login_UserNotFound 验证用户不存在时返回错误
func TestAuthService_Login_UserNotFound(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	output, err := svc.Login(ctx, &LoginInput{Email: "nonexistent@example.com", Password: "any-password"})
	assert.Nil(t, output)
	assert.EqualError(t, err, "invalid email or password")
}

// TestAuthService_Login_InactiveUser 验证 inactive 用户无法登录
func TestAuthService_Login_InactiveUser(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	now := time.Now()
	account := &model.Account{Name: "InactiveAccount", Status: "active"}
	require.NoError(t, svc.db.Create(account).Error)

	digest, err := crypto.HashPassword("password123")
	require.NoError(t, err)

	user := &model.User{
		AccountID:      account.ID,
		Name:           "InactiveUser",
		Email:          "inactive@example.com",
		PasswordDigest: digest,
		Password:       digest,
		Provider:       "email",
		ConfirmedAt:    &now,
	}
	// GORM零值bool问题：先Create Active=true，再Update Active=false
	require.NoError(t, svc.db.Create(user).Error)
	require.NoError(t, svc.db.Model(user).Update("Active", false).Error)

	au := &model.AccountUser{UserID: user.ID, AccountID: account.ID, Role: "agent"}
	require.NoError(t, svc.db.Create(au).Error)

	output, err := svc.Login(ctx, &LoginInput{Email: "inactive@example.com", Password: "password123"})
	assert.Nil(t, output)
	assert.EqualError(t, err, "user account is inactive")
}

// TestAuthService_Login_UnconfirmedEmail 验证未确认邮箱的用户无法登录
func TestAuthService_Login_UnconfirmedEmail(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	account := &model.Account{Name: "UnconfirmedAccount", Status: "active"}
	require.NoError(t, svc.db.Create(account).Error)

	digest, err := crypto.HashPassword("password123")
	require.NoError(t, err)

	user := &model.User{
		AccountID:      account.ID,
		Name:           "UnconfirmedUser",
		Email:          "unconfirmed@example.com",
		PasswordDigest: digest,
		Password:       digest,
		Provider:       "email",
		Active:         true,
		// ConfirmedAt intentionally nil — not confirmed yet
	}
	require.NoError(t, svc.db.Create(user).Error)

	output, err := svc.Login(ctx, &LoginInput{Email: "unconfirmed@example.com", Password: "password123"})
	assert.Nil(t, output)
	assert.EqualError(t, err, "email not confirmed, please verify your email first")
}

// TestAuthService_Login_OAuthOnlyUser 验证 OAuth-only 用户无法用密码登录
func TestAuthService_Login_OAuthOnlyUser(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	now := time.Now()
	account := &model.Account{Name: "OAuthAccount", Status: "active"}
	require.NoError(t, svc.db.Create(account).Error)

	user := &model.User{
		AccountID:   account.ID,
		Name:        "OAuthUser",
		Email:       "oauth@example.com",
		Provider:    "google",
		UID:         "google-12345",
		Active:      true,
		ConfirmedAt: &now,
	}
	require.NoError(t, svc.db.Create(user).Error)

	au := &model.AccountUser{UserID: user.ID, AccountID: account.ID, Role: "agent"}
	require.NoError(t, svc.db.Create(au).Error)

	output, err := svc.Login(ctx, &LoginInput{Email: "oauth@example.com", Password: "any-password"})
	assert.Nil(t, output)
	assert.Contains(t, err.Error(), "this account uses google authentication")
}

// TestAuthService_Login_MFARequired 验证启用 MFA 的用户登录返回 MFARequired=true
func TestAuthService_Login_MFARequired(t *testing.T) {
	_, _, _, _, mfaSvc, svc := setupAuthService(t)
	ctx := context.Background()

	user, _, _ := createConfirmedUserWithAccount(t, svc.db, "mfa@example.com", "password123", "MFAUser")

	secret, _, err := mfaSvc.GenerateTOTPSecret(user.ID)
	require.NoError(t, err)
	require.NoError(t, mfaSvc.EnableTOTP(user.ID, secret))

	output, err := svc.Login(ctx, &LoginInput{Email: "mfa@example.com", Password: "password123"})
	require.NoError(t, err)
	assert.True(t, output.MFARequired)
	assert.Nil(t, output.TokenPair)
}

// TestAuthService_Login_NoAccount 验证没有 AccountUser 关联的用户登录失败
func TestAuthService_Login_NoAccount(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	now := time.Now()
	digest, err := crypto.HashPassword("password123")
	require.NoError(t, err)

	user := &model.User{
		Name:           "NoAccountUser",
		Email:          "noaccount@example.com",
		PasswordDigest: digest,
		Password:       digest,
		Provider:       "email",
		Active:         true,
		ConfirmedAt:    &now,
	}
	require.NoError(t, svc.db.Create(user).Error)

	output, err := svc.Login(ctx, &LoginInput{Email: "noaccount@example.com", Password: "password123"})
	assert.Nil(t, output)
	assert.Contains(t, err.Error(), "failed to get user account")
}

// ========== Register Tests ==========

// TestAuthService_Register_Success 验证正常注册流程
func TestAuthService_Register_Success(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	user, err := svc.Register(ctx, &RegisterInput{
		Name:     "NewUser",
		Email:    "register@example.com",
		Password: "password123",
	})
	require.NoError(t, err)
	assert.Equal(t, "register@example.com", user.Email)
	assert.Equal(t, "NewUser", user.Name)
	assert.Equal(t, "email", user.Provider)
	assert.NotEmpty(t, user.PasswordDigest)
	assert.NotNil(t, user.ConfirmedAt) // auto-confirmed in dev mode
}

// TestAuthService_Register_DuplicateEmail 验证重复邮箱注册失败
func TestAuthService_Register_DuplicateEmail(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	_, _, _ = createConfirmedUserWithAccount(t, svc.db, "duplicate@example.com", "password123", "ExistingUser")

	user, err := svc.Register(ctx, &RegisterInput{
		Name:     "AnotherUser",
		Email:    "duplicate@example.com",
		Password: "password456",
	})
	assert.Nil(t, user)
	assert.EqualError(t, err, "email already registered")
}

// ========== LoginWithMFA Tests ==========

// TestAuthService_LoginWithMFA_Success 验证 MFA 登录验证成功返回 token pair
func TestAuthService_LoginWithMFA_Success(t *testing.T) {
	_, _, _, _, mfaSvc, svc := setupAuthService(t)
	ctx := context.Background()

	user, _, _ := createConfirmedUserWithAccount(t, svc.db, "mfalogin@example.com", "password123", "MFALoginUser")

	secret, _, err := mfaSvc.GenerateTOTPSecret(user.ID)
	require.NoError(t, err)
	require.NoError(t, mfaSvc.EnableTOTP(user.ID, secret))

	totpCode := generateTOTPCode(secret)

	output, err := svc.LoginWithMFA(ctx, user.ID, totpCode)
	require.NoError(t, err)
	assert.NotNil(t, output.TokenPair)
	assert.NotNil(t, output.User)
	assert.False(t, output.MFARequired)
}

// TestAuthService_LoginWithMFA_InvalidTOTPCode 验证无效 TOTP code 导致 MFA 登录失败
func TestAuthService_LoginWithMFA_InvalidTOTPCode(t *testing.T) {
	_, _, _, _, mfaSvc, svc := setupAuthService(t)
	ctx := context.Background()

	user, _, _ := createConfirmedUserWithAccount(t, svc.db, "mfalogin2@example.com", "password123", "MFALogin2User")

	secret, _, err := mfaSvc.GenerateTOTPSecret(user.ID)
	require.NoError(t, err)
	require.NoError(t, mfaSvc.EnableTOTP(user.ID, secret))

	output, err := svc.LoginWithMFA(ctx, user.ID, "000000")
	assert.Nil(t, output)
	assert.Contains(t, err.Error(), "invalid totp code")
}

// TestAuthService_LoginWithMFA_UserNotFound 验证用户不存在时 MFA 登录失败
func TestAuthService_LoginWithMFA_UserNotFound(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	output, err := svc.LoginWithMFA(ctx, 9999, "123456")
	assert.Nil(t, output)
	assert.Contains(t, err.Error(), "user not found")
}

// ========== RefreshToken Tests ==========

// TestAuthService_Refresh_Success 验证正常 refresh token 可以刷新
func TestAuthService_Refresh_Success(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	_, _, _ = createConfirmedUserWithAccount(t, svc.db, "refresh@example.com", "password123", "RefreshUser")

	loginOut, err := svc.Login(ctx, &LoginInput{Email: "refresh@example.com", Password: "password123"})
	require.NoError(t, err)

	// Refresh token 已在 Login 时存储到 Redis，可直接刷新
	output, err := svc.Refresh(ctx, &RefreshInput{RefreshToken: loginOut.TokenPair.RefreshToken})
	require.NoError(t, err)
	assert.NotNil(t, output.TokenPair)
	assert.NotEmpty(t, output.TokenPair.AccessToken)
	assert.NotEmpty(t, output.TokenPair.RefreshToken)
}

// TestAuthService_Refresh_InvalidToken 验证无效 refresh token 无法刷新
func TestAuthService_Refresh_InvalidToken(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	output, err := svc.Refresh(ctx, &RefreshInput{RefreshToken: "invalid-refresh-token"})
	assert.Nil(t, output)
	assert.Contains(t, err.Error(), "invalid refresh token")
}

// TestAuthService_Refresh_RevokedToken 验证已撤销的 refresh token 无法刷新
func TestAuthService_Refresh_RevokedToken(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	_, _, _ = createConfirmedUserWithAccount(t, svc.db, "revoked@example.com", "password123", "RevokedUser")

	loginOut, err := svc.Login(ctx, &LoginInput{Email: "revoked@example.com", Password: "password123"})
	require.NoError(t, err)

	// Logout 撤销 refresh token
	require.NoError(t, svc.Logout(ctx, loginOut.User.ID))

	output, err := svc.Refresh(ctx, &RefreshInput{RefreshToken: loginOut.TokenPair.RefreshToken})
	assert.Nil(t, output)
	assert.Contains(t, err.Error(), "refresh token expired or revoked")
}

// ========== Logout Tests ==========

// TestAuthService_Logout_Success 验证 logout 撤销 refresh token
func TestAuthService_Logout_Success(t *testing.T) {
	db, _, refreshStore, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	user, _, _ := createConfirmedUserWithAccount(t, db, "logout@example.com", "password123", "LogoutUser")

	loginOut, err := svc.Login(ctx, &LoginInput{Email: "logout@example.com", Password: "password123"})
	require.NoError(t, err)

	// 确保 refresh token 存在于 Redis
	require.NoError(t, refreshStore.Store(ctx, user.ID, loginOut.TokenPair.RefreshToken))

	err = svc.Logout(ctx, user.ID)
	require.NoError(t, err)

	valid, err := refreshStore.Validate(ctx, user.ID, loginOut.TokenPair.RefreshToken)
	require.NoError(t, err)
	assert.False(t, valid)
}

// ========== SwitchAccount Tests ==========

// TestAuthService_SwitchAccount_Success 验证切换账户返回新 token pair
func TestAuthService_SwitchAccount_Success(t *testing.T) {
	db, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	user, _, _ := createConfirmedUserWithAccount(t, db, "switch@example.com", "password123", "SwitchUser")

	// 创建第二个账户并关联
	account2 := &model.Account{Name: "Second Account", Status: "active"}
	require.NoError(t, db.Create(account2).Error)
	au2 := &model.AccountUser{UserID: user.ID, AccountID: account2.ID, Role: "agent"}
	require.NoError(t, db.Create(au2).Error)

	output, err := svc.SwitchAccount(ctx, &SwitchAccountInput{UserID: user.ID, AccountID: account2.ID})
	require.NoError(t, err)
	assert.NotNil(t, output.TokenPair)
	assert.Equal(t, account2.ID, output.AccountID)
	assert.Equal(t, "agent", output.Role)
}

// TestAuthService_SwitchAccount_NotMember 验证不属于目标账户时切换失败
func TestAuthService_SwitchAccount_NotMember(t *testing.T) {
	db, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	user, _, _ := createConfirmedUserWithAccount(t, db, "switch2@example.com", "password123", "Switch2User")

	otherAccount := &model.Account{Name: "Other Account", Status: "active"}
	require.NoError(t, db.Create(otherAccount).Error)

	output, err := svc.SwitchAccount(ctx, &SwitchAccountInput{UserID: user.ID, AccountID: otherAccount.ID})
	assert.Nil(t, output)
	assert.Contains(t, err.Error(), fmt.Sprintf("user does not belong to account %d", otherAccount.ID))
}

// ========== ResetPassword Tests ==========

// TestAuthService_ResetPassword_Success 验证密码重置请求不报错
func TestAuthService_ResetPassword_Success(t *testing.T) {
	db, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	_, _, _ = createConfirmedUserWithAccount(t, db, "reset@example.com", "password123", "ResetUser")

	err := svc.ResetPassword(ctx, &ResetPasswordInput{Email: "reset@example.com"})
	assert.NoError(t, err)
}

// TestAuthService_ResetPassword_EmailNotFound 验证不存在邮箱也不报错（安全最佳实践）
func TestAuthService_ResetPassword_EmailNotFound(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	err := svc.ResetPassword(ctx, &ResetPasswordInput{Email: "nonexistent@example.com"})
	assert.NoError(t, err)
}

// ========== ConfirmResetPassword Tests ==========

// TestAuthService_ConfirmResetPassword_NotImplemented 验证当前返回未实现错误
func TestAuthService_ConfirmResetPassword_NotImplemented(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	err := svc.ConfirmResetPassword(ctx, &ConfirmResetPasswordInput{Token: "some-token", Password: "new-password"})
	assert.Error(t, err)
	assert.Contains(t, err.Error(), "not yet implemented")
}

// ========== ConfirmEmail Tests ==========

// TestAuthService_ConfirmEmail_NotImplemented 验证当前返回未实现错误
func TestAuthService_ConfirmEmail_NotImplemented(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	user, err := svc.ConfirmEmail(ctx, &ConfirmEmailInput{Token: "some-token"})
	assert.Nil(t, user)
	assert.Error(t, err)
	assert.Contains(t, err.Error(), "not yet implemented")
}

// ========== OAuthLogin Tests ==========

// TestAuthService_OAuthLogin_ExchangeCodeFailed 验证 OAuth code exchange 失败
func TestAuthService_OAuthLogin_ExchangeCodeFailed(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	output, err := svc.OAuthLogin(ctx, &OAuthLoginInput{
		Provider: auth.OAuthProviderGoogle,
		Code:     "invalid-oauth-code",
		State:    "test-state",
	})
	assert.Nil(t, output)
	assert.Contains(t, err.Error(), "oauth exchange failed")
}

// TestAuthService_OAuthLogin_UnconfiguredProvider 验证未配置的 OAuth provider
func TestAuthService_OAuthLogin_UnconfiguredProvider(t *testing.T) {
	_, _, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	output, err := svc.OAuthLogin(ctx, &OAuthLoginInput{
		Provider: auth.OAuthProviderCustom,
		Code:     "some-code",
		State:    "test-state",
	})
	assert.Nil(t, output)
	assert.Contains(t, err.Error(), "oauth")
}

// ========== ValidateToken Tests ==========

// TestAuthService_ValidateAccessToken_Success 验证生成的 access token 可被正确解析
func TestAuthService_ValidateAccessToken_Success(t *testing.T) {
	db, jwtSvc, _, _, _, svc := setupAuthService(t)
	ctx := context.Background()

	user, account, _ := createConfirmedUserWithAccount(t, db, "validate@example.com", "password123", "ValidateUser")

	loginOut, err := svc.Login(ctx, &LoginInput{Email: "validate@example.com", Password: "password123"})
	require.NoError(t, err)

	claims, err := jwtSvc.ValidateAccessToken(loginOut.TokenPair.AccessToken)
	require.NoError(t, err)
	assert.Equal(t, user.ID, claims.UserID)
	assert.Equal(t, account.ID, claims.AccountID)
}

// TestAuthService_ValidateAccessToken_InvalidToken 验证无效 access token 解析失败
func TestAuthService_ValidateAccessToken_InvalidToken(t *testing.T) {
	_, jwtSvc, _, _, _, _ := setupAuthService(t)

	claims, err := jwtSvc.ValidateAccessToken("invalid-access-token")
	assert.Nil(t, claims)
	assert.Error(t, err)
}

// ========== createDefaultAccount Tests ==========

// TestAuthService_CreateDefaultAccount_Success 验证为新用户自动创建默认账户
func TestAuthService_CreateDefaultAccount_Success(t *testing.T) {
	db, _, _, _, _, svc := setupAuthService(t)

	now := time.Now()
	digest, err := crypto.HashPassword("password123")
	require.NoError(t, err)

	user := &model.User{
		Name:           "NewOAuthUser",
		Email:          "newoauth@example.com",
		PasswordDigest: digest,
		Password:       digest,
		Provider:       "google",
		UID:            "google-999",
		Active:         true,
		ConfirmedAt:    &now,
	}
	require.NoError(t, db.Create(user).Error)

	accountID, role, err := svc.createDefaultAccount(user)
	require.NoError(t, err)
	assert.NotZero(t, accountID)
	assert.Equal(t, "administrator", role)

	var au AccountUser
	require.NoError(t, db.Where("user_id = ? AND account_id = ?", user.ID, accountID).First(&au).Error)
	assert.Equal(t, "administrator", au.Role)
}

// ========== getUserDefaultAccount Tests ==========

// TestAuthService_GetUserDefaultAccount_Success 验证获取用户默认账户
func TestAuthService_GetUserDefaultAccount_Success(t *testing.T) {
	db, _, _, _, _, svc := setupAuthService(t)

	user, account, au := createConfirmedUserWithAccount(t, db, "default@example.com", "password123", "DefaultUser")

	accountID, role, err := svc.getUserDefaultAccount(user)
	require.NoError(t, err)
	assert.Equal(t, account.ID, accountID)
	assert.Equal(t, au.Role, role)
}

// TestAuthService_GetUserDefaultAccount_NoAccount 验证没有账户关联时返回错误
func TestAuthService_GetUserDefaultAccount_NoAccount(t *testing.T) {
	db, _, _, _, _, svc := setupAuthService(t)

	now := time.Now()
	digest, err := crypto.HashPassword("password123")
	require.NoError(t, err)

	user := &model.User{
		Name:           "NoAccountDefault",
		Email:          "noaccountdefault@example.com",
		PasswordDigest: digest,
		Password:       digest,
		Provider:       "email",
		Active:         true,
		ConfirmedAt:    &now,
	}
	require.NoError(t, db.Create(user).Error)

	accountID, role, err := svc.getUserDefaultAccount(user)
	assert.Zero(t, accountID)
	assert.Empty(t, role)
	assert.EqualError(t, err, "user has no account")
}