feat: dialog to change template metadata in editor

internal/template/http_handlers.go

@@ -19,6 +19,7 @@ type createTemplateRequestBody struct {
 }
 
 type postTemplateRequestBody struct {
+	Name        *string        `json:"name"`
 	Description *string        `json:"description"`
 	Files       []templateFile `json:"files"`
 
@@ -114,13 +115,22 @@ func updateTemplate(c echo.Context, body postTemplateRequestBody) error {
 	mgr := templateManagerFrom(c)
 	ctx := c.Request().Context()
 
-	updatedTemplate, err := mgr.updateTemplate(ctx, name, updateTemplateOptions{
-		description: *body.Description,
-	})
+	var opts updateTemplateOptions
+	if body.Name != nil {
+		opts.name = *body.Name
+	}
+	if body.Description != nil {
+		opts.description = *body.Description
+	}
+
+	updatedTemplate, err := mgr.updateTemplate(ctx, name, opts)
 	if err != nil {
 		if errors.Is(err, errTemplateNotFound) {
 			return echo.NewHTTPError(http.StatusNotFound)
 		}
+		if errors.Is(err, errTemplateExists) {
+			return echo.NewHTTPError(http.StatusConflict)
+		}
 		return err
 	}
 

internal/template/template.go

@@ -20,7 +20,7 @@ type template struct {
 	IsBuilt        bool      `json:"isBuilt"`
 
 	Files   []*templateFile          `bun:"rel:has-many,join:id=template_id" json:"-"`
-	FileMap map[string]*templateFile `bun:"-" json:"files"`
+	FileMap map[string]*templateFile `bun:"-" json:"files,omitempty"`
 }
 
 type templateFile struct {

internal/template/template_manager.go

@@ -30,7 +30,12 @@ type createTemplateOptions struct {
 }
 
 type updateTemplateOptions struct {
-	tx          *bun.Tx
+	tx *bun.Tx
+
+	// name is the new name for the template
+	name string
+
+	// description is the new description for the template
 	description string
 }
 
@@ -183,10 +188,29 @@ func (mgr *templateManager) updateTemplate(ctx context.Context, name string, opt
 		tx = &_tx
 	}
 
+	if opts.name != "" {
+		exists, err := tx.NewSelect().
+			Table("templates").
+			Where("name = ?", opts.name).
+			Exists(ctx)
+		if err != nil {
+			return nil, err
+		}
+		if exists {
+			return nil, errTemplateExists
+		}
+	}
+
 	var template template
-	err := tx.NewUpdate().Model(&template).
-		Where("Name = ?", name).
-		Set("description = ?", opts.description).
+	q := tx.NewUpdate().Model(&template).Where("name = ?", name)
+	if opts.name != "" {
+		q = q.Set("name = ?", opts.name)
+	}
+	if opts.description != "" {
+		q = q.Set("description = ?", opts.description)
+	}
+
+	err := q.
 		Returning("*").
 		Scan(ctx)
 	if err != nil {