LibraryPanels: adds connections (#30212)

* LibraryPanels: adds connections

* Chore: testing signing verification

* Update pkg/services/librarypanels/librarypanels_test.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Update pkg/services/librarypanels/librarypanels_test.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Update pkg/services/librarypanels/librarypanels_test.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Update pkg/services/librarypanels/librarypanels_test.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Update pkg/services/librarypanels/librarypanels_test.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Update pkg/services/librarypanels/librarypanels_test.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Update pkg/services/librarypanels/librarypanels_test.go

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

* Chore: changes after PR comments

* Chore: changes after PR comments

Co-authored-by: Arve Knudsen <arve.knudsen@gmail.com>

pkg/services/librarypanels/database.go

@@ -40,6 +40,34 @@ func (lps *LibraryPanelService) createLibraryPanel(c *models.ReqContext, cmd cre
 	return libraryPanel, err
 }
 
+// connectDashboard adds a connection between a Library Panel and a Dashboard.
+func (lps *LibraryPanelService) connectDashboard(c *models.ReqContext, uid string, dashboardID int64) error {
+	err := lps.SQLStore.WithTransactionalDbSession(context.Background(), func(session *sqlstore.DBSession) error {
+		panel, err := getLibraryPanel(session, uid, c.SignedInUser.OrgId)
+		if err != nil {
+			return err
+		}
+
+		// TODO add check that dashboard exists
+
+		libraryPanelDashboard := libraryPanelDashboard{
+			DashboardID:    dashboardID,
+			LibraryPanelID: panel.ID,
+			Created:        time.Now(),
+			CreatedBy:      c.SignedInUser.UserId,
+		}
+		if _, err := session.Insert(&libraryPanelDashboard); err != nil {
+			if lps.SQLStore.Dialect.IsUniqueConstraintViolation(err) {
+				return nil
+			}
+			return err
+		}
+		return nil
+	})
+
+	return err
+}
+
 // deleteLibraryPanel deletes a Library Panel.
 func (lps *LibraryPanelService) deleteLibraryPanel(c *models.ReqContext, uid string) error {
 	orgID := c.SignedInUser.OrgId
@@ -59,6 +87,29 @@ func (lps *LibraryPanelService) deleteLibraryPanel(c *models.ReqContext, uid str
 	})
 }
 
+// disconnectDashboard deletes a connection between a Library Panel and a Dashboard.
+func (lps *LibraryPanelService) disconnectDashboard(c *models.ReqContext, uid string, dashboardID int64) error {
+	return lps.SQLStore.WithTransactionalDbSession(context.Background(), func(session *sqlstore.DBSession) error {
+		panel, err := getLibraryPanel(session, uid, c.SignedInUser.OrgId)
+		if err != nil {
+			return err
+		}
+
+		result, err := session.Exec("DELETE FROM library_panel_dashboard WHERE librarypanel_id=? and dashboard_id=?", panel.ID, dashboardID)
+		if err != nil {
+			return err
+		}
+
+		if rowsAffected, err := result.RowsAffected(); err != nil {
+			return err
+		} else if rowsAffected != 1 {
+			return errLibraryPanelDashboardNotFound
+		}
+
+		return nil
+	})
+}
+
 func getLibraryPanel(session *sqlstore.DBSession, uid string, orgID int64) (LibraryPanel, error) {
 	libraryPanels := make([]LibraryPanel, 0)
 	session.Table("library_panel")
@@ -105,6 +156,33 @@ func (lps *LibraryPanelService) getAllLibraryPanels(c *models.ReqContext) ([]Lib
 	return libraryPanels, err
 }
 
+// getConnectedDashboards gets all dashboards connected to a Library Panel.
+func (lps *LibraryPanelService) getConnectedDashboards(c *models.ReqContext, uid string) ([]int64, error) {
+	connectedDashboardIDs := make([]int64, 0)
+	err := lps.SQLStore.WithDbSession(context.Background(), func(session *sqlstore.DBSession) error {
+		panel, err := getLibraryPanel(session, uid, c.SignedInUser.OrgId)
+		if err != nil {
+			return err
+		}
+
+		var libraryPanelDashboards []libraryPanelDashboard
+		session.Table("library_panel_dashboard")
+		session.Where("librarypanel_id=?", panel.ID)
+		err = session.Find(&libraryPanelDashboards)
+		if err != nil {
+			return err
+		}
+
+		for _, lpd := range libraryPanelDashboards {
+			connectedDashboardIDs = append(connectedDashboardIDs, lpd.DashboardID)
+		}
+
+		return nil
+	})
+
+	return connectedDashboardIDs, err
+}
+
 // patchLibraryPanel updates a Library Panel.
 func (lps *LibraryPanelService) patchLibraryPanel(c *models.ReqContext, cmd patchLibraryPanelCommand, uid string) (LibraryPanel, error) {
 	var libraryPanel LibraryPanel