fix(workbench): complete profile and channel flows

backend/internal/logic/projects/service.go

@@ -2,6 +2,7 @@ package projects
 
 import (
 	"errors"
+	"net/url"
 	"strings"
 
 	"gorm.io/gorm"
@@ -64,8 +65,40 @@ var (
 	ErrProjectNameRequired       = errors.New("project name is required")
 	ErrProjectIdentifierRequired = errors.New("project identifier is required")
 	ErrProjectIdentifierConflict = errors.New("project identifier already exists")
+	ErrChannelTitleRequired      = errors.New("channel title is required")
+	ErrChannelURLRequired        = errors.New("channel url is required")
+	ErrChannelURLInvalid         = errors.New("channel url must use http or https")
 )
 
+func (s *Service) CreateProjectChannel(ownerID, projectID uint, input CreateProjectChannelInput) (*models.SaProjectChannel, error) {
+	if err := ensureProjectOwner(ownerID, projectID); err != nil {
+		return nil, err
+	}
+	title := strings.TrimSpace(input.Title)
+	if title == "" {
+		return nil, ErrChannelTitleRequired
+	}
+	address := strings.TrimSpace(input.URL)
+	if address == "" {
+		return nil, ErrChannelURLRequired
+	}
+	parsedURL, err := url.ParseRequestURI(address)
+	if err != nil || (parsedURL.Scheme != "http" && parsedURL.Scheme != "https") || parsedURL.Host == "" {
+		return nil, ErrChannelURLInvalid
+	}
+	icon := strings.TrimSpace(input.Icon)
+	if icon == "" {
+		icon = "link"
+	}
+	var previous models.SaProjectChannel
+	_ = models.DBService.Where("project_id = ?", projectID).Order("sort_order DESC").First(&previous).Error
+	channel := &models.SaProjectChannel{ProjectID: projectID, Title: title, Icon: icon, URL: address, SortOrder: previous.SortOrder + 1}
+	if err := models.DBService.Create(channel).Error; err != nil {
+		return nil, err
+	}
+	return channel, nil
+}
+
 // projectWriteError 将 Postgres/SQLite 经 Gorm 翻译后的唯一约束错误收敛为稳定业务冲突。
 func projectWriteError(err error) error {
 	if errors.Is(err, gorm.ErrDuplicatedKey) {