feat:#94 added delete api and tests

backend/service/db/dbFeeds.go

@@ -1,6 +1,8 @@
 package db
 
 import (
+	"errors"
+	"github.com/pocketbase/dbx"
 	"github.com/pocketbase/pocketbase"
 	"github.com/pocketbase/pocketbase/daos"
 	"github.com/pocketbase/pocketbase/models"
@@ -39,6 +41,25 @@ func FindFeedByToken(token string, app *pocketbase.PocketBase) (*model.Feed, err
 	return &feed, err
 }
 
+func DeleteFeed(db *daos.Dao, feedId string) error {
+
+	sqlResult, err := db.DB().Delete("feeds", dbx.NewExp("id = {:id}", dbx.Params{"id": feedId})).Execute()
+	var deletedRows int64
+	if sqlResult != nil {
+		deletedRows, _ = sqlResult.RowsAffected()
+	}
+
+	if err != nil {
+		return err
+	} else {
+		if deletedRows == 0 {
+			return errors.New("No feed with id " + feedId + " found")
+		} else {
+			return nil
+		}
+	}
+}
+
 func GetAllFeeds(db *daos.Dao) ([]model.Feed, error) {
 	var feeds []model.Feed
 	err := db.DB().Select("*").From("feeds").All(&feeds)