added contact suggestion route, code refactor

handlers/auth.go

@@ -40,7 +40,7 @@ func Signup(c *fiber.Ctx) error {
 	// Check if user exists
 	exist, err := database.CheckUserExists(database.DB, u.Username)
 	if err != nil {
-		return helpers.NewError(helpers.ErrInternal, "internal server error", fmt.Errorf("failed to check user existance: %w", err))
+		return err
 	}
 	if exist {
 		return helpers.NewError(helpers.ErrInvalidInput, "User already exists", nil)
@@ -55,7 +55,7 @@ func Signup(c *fiber.Ctx) error {
 	// Insert user
 	userID, err := database.InsertUser(database.DB, u.Username, string(passwordHash))
 	if err != nil {
-		return helpers.NewError(helpers.ErrInternal, "Failed to create user", err)
+		return err
 	}
 
 	// Generate token

handlers/contacts.go

@@ -9,8 +9,8 @@ import (
 
 func DeleteContact(c *fiber.Ctx) error {
 	type params struct {
-		ContactID      uuid.UUID `params:"contact_id"`
-		ConversationID uuid.UUID `params:"conversation_id"`
+		ContactID      uuid.UUID `params:"contactID"`
+		ConversationID uuid.UUID `params:"conversationID"`
 	}
 
 	p := new(params)
@@ -27,7 +27,7 @@ func DeleteContact(c *fiber.Ctx) error {
 
 	err := database.DeleteContact(database.DB, p.ContactID, p.ConversationID)
 	if err != nil {
-		return helpers.NewError(helpers.ErrInternal, "Failed to delete contact", err)
+		return err
 	}
 
 	return c.Status(fiber.StatusOK).JSON(fiber.Map{"message": "Contact deleted"})
@@ -59,7 +59,7 @@ func InsertContact(c *fiber.Ctx) error {
 	}
 
 	if !helpers.IsValidUsername(p.ContactUsername) {
-		return helpers.NewError(helpers.ErrInvalidInput, "username is invalid", nil)
+		return helpers.NewError(helpers.ErrInvalidInput, "invalid username", nil)
 	}
 
 	contactID, err := database.GetUserID(database.DB, p.ContactUsername)
@@ -94,3 +94,23 @@ func GetContacts(c *fiber.Ctx) error {
 
 	return c.Status(fiber.StatusOK).JSON(contacts)
 }
+
+func GetContactSuggestions(c *fiber.Ctx) error {
+	type params struct {
+		ContactUsername string `params:"contactUsername"`
+	}
+
+	p := new(params)
+	if err := c.ParamsParser(p); err != nil {
+		return helpers.NewError(helpers.ErrInvalidInput, "Invalid params", err)
+	}
+	if p.ContactUsername == "" {
+		return helpers.NewError(helpers.ErrInvalidInput, "contact username is empty", nil)
+	}
+
+	suggestions, err := database.ContactSuggestion(database.DB, p.ContactUsername)
+	if err != nil {
+		return err
+	}
+	return c.Status(fiber.StatusOK).JSON(suggestions)
+}