feat(svg): added svg template delete endpoint

internal/database/database.go

@@ -32,5 +32,8 @@ func InitDB() {
 }
 
 func Close() error {
+	if database == nil {
+		return nil
+	}
 	return database.Close()
 }

internal/database/svgdb.go

@@ -15,6 +15,7 @@ const SVGTABLECREATE string = `
 const INSERTSVGSQL string = "INSERT INTO svg VALUES (?, ?);"
 const GETSPECIFICSVGSQL string = "SELECT * FROM svg WHERE name = ?;"
 const GETSVGSQL string = "SELECT * FROM svg;"
+const DELETESVGSQL string = "DELETE FROM svg WHERE name = ?;"
 
 func InsertSVG(data *svg.TemplateData) error {
 	json, err := json.Marshal(data.TemplateKeys)
@@ -72,3 +73,19 @@ func GetSpecificSVG(id string) (svg.TemplateData, error) {
 	}
 	return svg.TemplateData{Id: id, TemplateKeys: keys}, nil
 }
+
+func DeleteSvg(id string) (bool, error) {
+	res, err := database.Exec(DELETESVGSQL, id)
+	if err != nil {
+		return false, err
+	}
+	num, err := res.RowsAffected()
+	if err != nil {
+		return false, err
+	}
+
+	if num == 0 {
+		return false, nil
+	}
+	return true, nil
+}