feat: add AI workflow service foundation

internal/repositories/ai_workflow_version_repository.go

@@ -0,0 +1,58 @@
+package repositories
+
+import (
+	"agent-desk/internal/models"
+	"agent-desk/internal/pkg/httpx/params"
+
+	"github.com/mlogclub/simple/sqls"
+	"gorm.io/gorm"
+)
+
+var AIWorkflowVersionRepository = newAIWorkflowVersionRepository()
+
+func newAIWorkflowVersionRepository() *aiWorkflowVersionRepository {
+	return &aiWorkflowVersionRepository{}
+}
+
+type aiWorkflowVersionRepository struct{}
+
+func (r *aiWorkflowVersionRepository) Get(db *gorm.DB, id int64) *models.AIWorkflowVersion {
+	ret := &models.AIWorkflowVersion{}
+	if err := db.First(ret, "id = ?", id).Error; err != nil {
+		return nil
+	}
+	return ret
+}
+
+func (r *aiWorkflowVersionRepository) Find(db *gorm.DB, cnd *sqls.Cnd) (list []models.AIWorkflowVersion) {
+	cnd.Find(db, &list)
+	return
+}
+
+func (r *aiWorkflowVersionRepository) FindPageByParams(db *gorm.DB, params *params.QueryParams) (list []models.AIWorkflowVersion, paging *sqls.Paging) {
+	return r.FindPageByCnd(db, &params.Cnd)
+}
+
+func (r *aiWorkflowVersionRepository) FindPageByCnd(db *gorm.DB, cnd *sqls.Cnd) (list []models.AIWorkflowVersion, paging *sqls.Paging) {
+	cnd.Find(db, &list)
+	count := cnd.Count(db, &models.AIWorkflowVersion{})
+	paging = &sqls.Paging{
+		Page:  cnd.Paging.Page,
+		Limit: cnd.Paging.Limit,
+		Total: count,
+	}
+	return
+}
+
+func (r *aiWorkflowVersionRepository) Create(db *gorm.DB, t *models.AIWorkflowVersion) error {
+	return db.Create(t).Error
+}
+
+func (r *aiWorkflowVersionRepository) MaxVersionByWorkflowID(db *gorm.DB, workflowID int64) int {
+	var maxVersion int
+	db.Model(&models.AIWorkflowVersion{}).
+		Where("workflow_id = ?", workflowID).
+		Select("COALESCE(MAX(version), 0)").
+		Scan(&maxVersion)
+	return maxVersion
+}