Query history: Create API to delete query from query history (#44653)

* Query history: Add delete and refactor

* Update docs/sources/http_api/query_history.md

Co-authored-by: Piotr Jamróz <pm.jamroz@gmail.com>

Co-authored-by: Piotr Jamróz <pm.jamroz@gmail.com>

pkg/services/queryhistory/database.go

@@ -9,12 +9,12 @@ import (
 	"github.com/grafana/grafana/pkg/util"
 )
 
-func (s QueryHistoryService) createQuery(ctx context.Context, user *models.SignedInUser, cmd CreateQueryInQueryHistoryCommand) error {
+func (s QueryHistoryService) createQuery(ctx context.Context, user *models.SignedInUser, cmd CreateQueryInQueryHistoryCommand) (QueryHistoryDTO, error) {
 	queryHistory := QueryHistory{
-		OrgId:         user.OrgId,
-		Uid:           util.GenerateShortUID(),
+		OrgID:         user.OrgId,
+		UID:           util.GenerateShortUID(),
 		Queries:       cmd.Queries,
-		DatasourceUid: cmd.DatasourceUid,
+		DatasourceUID: cmd.DatasourceUID,
 		CreatedBy:     user.UserId,
 		CreatedAt:     time.Now().Unix(),
 		Comment:       "",
@@ -25,8 +25,32 @@ func (s QueryHistoryService) createQuery(ctx context.Context, user *models.Signe
 		return err
 	})
 	if err != nil {
-		return err
+		return QueryHistoryDTO{}, err
 	}
 
-	return nil
+	dto := QueryHistoryDTO{
+		UID:           queryHistory.UID,
+		DatasourceUID: queryHistory.DatasourceUID,
+		CreatedBy:     queryHistory.CreatedBy,
+		CreatedAt:     queryHistory.CreatedAt,
+		Comment:       queryHistory.Comment,
+		Queries:       queryHistory.Queries,
+		Starred:       false,
+	}
+
+	return dto, nil
+}
+
+func (s QueryHistoryService) deleteQuery(ctx context.Context, user *models.SignedInUser, UID string) (int64, error) {
+	var queryID int64
+	err := s.SQLStore.WithDbSession(ctx, func(session *sqlstore.DBSession) error {
+		id, err := session.Where("org_id = ? AND created_by = ? AND uid = ?", user.OrgId, user.UserId, UID).Delete(QueryHistory{})
+		if id == 0 {
+			return ErrQueryNotFound
+		}
+		queryID = id
+		return err
+	})
+
+	return queryID, err
 }