feat(user): add CreateBotUser

pkg/user/user_create.go

@@ -121,12 +121,81 @@ func CreateUser(s *xorm.Session, user *User) (newUser *User, err error) {
 	return newUserOut, err
 }
 
+// CreateBotUser creates a bot user owned by the given owner.
+// Bots have no email or password and cannot authenticate interactively.
+// It intentionally bypasses checkIfUserIsValid / checkIfUserExists because
+// those enforce email+password and would flag duplicate empty emails.
+func CreateBotUser(s *xorm.Session, bot *User, owner *User) (*User, error) {
+	if owner == nil || owner.ID == 0 {
+		return nil, ErrNoUsernamePassword{}
+	}
+	if owner.IsBot() {
+		return nil, &ErrBotNotOwned{UserID: owner.ID}
+	}
+
+	// Reuse the same username format rules as regular user creation
+	if err := checkUsernameFormat(bot.Username); err != nil {
+		return nil, err
+	}
+	if !strings.HasPrefix(bot.Username, "bot-") {
+		return nil, &ErrBotUsernameMustHavePrefix{Username: bot.Username}
+	}
+
+	if _, err := GetUserByUsername(s, bot.Username); err == nil {
+		return nil, ErrUsernameExists{Username: bot.Username}
+	} else if !IsErrUserDoesNotExist(err) {
+		return nil, err
+	}
+
+	bot.ID = 0
+	bot.BotOwnerID = owner.ID
+	bot.Status = StatusActive
+	bot.Issuer = IssuerLocal
+	bot.Password = ""
+	bot.Email = ""
+
+	if _, err := s.Insert(bot); err != nil {
+		return nil, err
+	}
+
+	newBot, err := GetUserByID(s, bot.ID)
+	if err != nil {
+		return nil, err
+	}
+
+	events.DispatchOnCommit(s, &CreatedEvent{User: newBot})
+	return newBot, nil
+}
+
 // HashPassword hashes a password
 func HashPassword(password string) (string, error) {
 	bytes, err := bcrypt.GenerateFromPassword([]byte(password), config.ServiceBcryptRounds.GetInt())
 	return string(bytes), err
 }
 
+// checkUsernameFormat validates username format rules shared by regular and bot users.
+func checkUsernameFormat(username string) error {
+	if username == "" {
+		return ErrNoUsernamePassword{}
+	}
+
+	if strings.Contains(username, " ") {
+		return &ErrUsernameMustNotContainSpaces{
+			Username: username,
+		}
+	}
+
+	// Check if username matches the reserved link-share pattern
+	linkSharePattern := regexp.MustCompile(`^link-share-\d+$`)
+	if linkSharePattern.MatchString(username) {
+		return ErrUsernameReserved{
+			Username: username,
+		}
+	}
+
+	return nil
+}
+
 func checkIfUserIsValid(user *User) error {
 	if user.Email == "" ||
 		(user.Issuer != IssuerLocal && user.Subject == "") ||
@@ -135,18 +204,8 @@ func checkIfUserIsValid(user *User) error {
 		return ErrNoUsernamePassword{}
 	}
 
-	if strings.Contains(user.Username, " ") {
-		return &ErrUsernameMustNotContainSpaces{
-			Username: user.Username,
-		}
-	}
-
-	// Check if username matches the reserved link-share pattern
-	linkSharePattern := regexp.MustCompile(`^link-share-\d+$`)
-	if linkSharePattern.MatchString(user.Username) {
-		return ErrUsernameReserved{
-			Username: user.Username,
-		}
+	if err := checkUsernameFormat(user.Username); err != nil {
+		return err
 	}
 
 	// Reserve the bot- prefix for bot users (created via CreateBotUser)

pkg/user/user_test.go

@@ -25,6 +25,75 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+func TestCreateBotUser(t *testing.T) {
+	t.Run("success", func(t *testing.T) {
+		db.LoadAndAssertFixtures(t)
+		s := db.NewSession()
+		defer s.Close()
+
+		owner, err := GetUserByID(s, 1)
+		require.NoError(t, err)
+
+		bot, err := CreateBotUser(s, &User{Username: "bot-reviewer"}, owner)
+		require.NoError(t, err)
+		assert.True(t, bot.IsBot())
+		assert.Equal(t, owner.ID, bot.BotOwnerID)
+		assert.Equal(t, StatusActive, bot.Status)
+		assert.Empty(t, bot.Email)
+		assert.Empty(t, bot.Password)
+	})
+	t.Run("empty username", func(t *testing.T) {
+		db.LoadAndAssertFixtures(t)
+		s := db.NewSession()
+		defer s.Close()
+		owner, err := GetUserByID(s, 1)
+		require.NoError(t, err)
+		_, err = CreateBotUser(s, &User{Username: ""}, owner)
+		require.Error(t, err)
+	})
+	t.Run("username with spaces", func(t *testing.T) {
+		db.LoadAndAssertFixtures(t)
+		s := db.NewSession()
+		defer s.Close()
+		owner, err := GetUserByID(s, 1)
+		require.NoError(t, err)
+		_, err = CreateBotUser(s, &User{Username: "bot- name"}, owner)
+		require.Error(t, err)
+		assert.True(t, IsErrUsernameMustNotContainSpaces(err))
+	})
+	t.Run("missing bot- prefix", func(t *testing.T) {
+		db.LoadAndAssertFixtures(t)
+		s := db.NewSession()
+		defer s.Close()
+		owner, err := GetUserByID(s, 1)
+		require.NoError(t, err)
+		_, err = CreateBotUser(s, &User{Username: "reviewer"}, owner)
+		require.Error(t, err)
+		assert.True(t, IsErrBotUsernameMustHavePrefix(err))
+	})
+	t.Run("duplicate username", func(t *testing.T) {
+		db.LoadAndAssertFixtures(t)
+		s := db.NewSession()
+		defer s.Close()
+		owner, err := GetUserByID(s, 1)
+		require.NoError(t, err)
+		_, err = CreateBotUser(s, &User{Username: "bot-dup"}, owner)
+		require.NoError(t, err)
+		_, err = CreateBotUser(s, &User{Username: "bot-dup"}, owner)
+		require.Error(t, err)
+		assert.True(t, IsErrUsernameExists(err))
+	})
+	t.Run("bot cannot create bot", func(t *testing.T) {
+		db.LoadAndAssertFixtures(t)
+		s := db.NewSession()
+		defer s.Close()
+		botOwner := &User{ID: 999, BotOwnerID: 1}
+		_, err := CreateBotUser(s, &User{Username: "bot-child"}, botOwner)
+		require.Error(t, err)
+		assert.True(t, IsErrBotNotOwned(err))
+	})
+}
+
 func TestCreateUser_RejectsBotPrefix(t *testing.T) {
 	db.LoadAndAssertFixtures(t)
 	s := db.NewSession()