MM-10140: API Implementation for Schemes related Endpoints (#8615)

* Implement basic scheme CRUD endpoints.

* Get All Schemes (Paged) Endpoint and store plumbing.

* Add get teams/channels for schemes.

* Fix unit tests.

* Review fixes.

* More review fixes.

app/scheme.go

@@ -12,3 +12,104 @@ func (a *App) GetScheme(id string) (*model.Scheme, *model.AppError) {
 		return result.Data.(*model.Scheme), nil
 	}
 }
+
+func (a *App) GetSchemesPage(scope string, page int, perPage int) ([]*model.Scheme, *model.AppError) {
+	return a.GetSchemes(scope, page*perPage, perPage)
+}
+
+func (a *App) GetSchemes(scope string, offset int, limit int) ([]*model.Scheme, *model.AppError) {
+	if result := <-a.Srv.Store.Scheme().GetAllPage(scope, offset, limit); result.Err != nil {
+		return nil, result.Err
+	} else {
+		return result.Data.([]*model.Scheme), nil
+	}
+}
+
+func (a *App) CreateScheme(scheme *model.Scheme) (*model.Scheme, *model.AppError) {
+	if err := a.IsPhase2MigrationCompleted(); err != nil {
+		return nil, err
+	}
+
+	// Clear any user-provided values for trusted properties.
+	scheme.DefaultTeamAdminRole = ""
+	scheme.DefaultTeamUserRole = ""
+	scheme.DefaultChannelAdminRole = ""
+	scheme.DefaultChannelUserRole = ""
+	scheme.CreateAt = 0
+	scheme.UpdateAt = 0
+	scheme.DeleteAt = 0
+
+	if result := <-a.Srv.Store.Scheme().Save(scheme); result.Err != nil {
+		return nil, result.Err
+	} else {
+		return scheme, nil
+	}
+}
+
+func (a *App) PatchScheme(scheme *model.Scheme, patch *model.SchemePatch) (*model.Scheme, *model.AppError) {
+	if err := a.IsPhase2MigrationCompleted(); err != nil {
+		return nil, err
+	}
+
+	scheme.Patch(patch)
+	scheme, err := a.UpdateScheme(scheme)
+	if err != nil {
+		return nil, err
+	}
+
+	return scheme, err
+}
+
+func (a *App) UpdateScheme(scheme *model.Scheme) (*model.Scheme, *model.AppError) {
+	if err := a.IsPhase2MigrationCompleted(); err != nil {
+		return nil, err
+	}
+
+	if result := <-a.Srv.Store.Scheme().Save(scheme); result.Err != nil {
+		return nil, result.Err
+	} else {
+		return scheme, nil
+	}
+}
+
+func (a *App) DeleteScheme(schemeId string) (*model.Scheme, *model.AppError) {
+	if err := a.IsPhase2MigrationCompleted(); err != nil {
+		return nil, err
+	}
+
+	if result := <-a.Srv.Store.Scheme().Delete(schemeId); result.Err != nil {
+		return nil, result.Err
+	} else {
+		return result.Data.(*model.Scheme), nil
+	}
+}
+
+func (a *App) GetTeamsForSchemePage(scheme *model.Scheme, page int, perPage int) ([]*model.Team, *model.AppError) {
+	return a.GetTeamsForScheme(scheme, page*perPage, perPage)
+}
+
+func (a *App) GetTeamsForScheme(scheme *model.Scheme, offset int, limit int) ([]*model.Team, *model.AppError) {
+	if result := <-a.Srv.Store.Team().GetTeamsByScheme(scheme.Id, offset, limit); result.Err != nil {
+		return nil, result.Err
+	} else {
+		return result.Data.([]*model.Team), nil
+	}
+}
+
+func (a *App) GetChannelsForSchemePage(scheme *model.Scheme, page int, perPage int) (model.ChannelList, *model.AppError) {
+	return a.GetChannelsForScheme(scheme, page*perPage, perPage)
+}
+
+func (a *App) GetChannelsForScheme(scheme *model.Scheme, offset int, limit int) (model.ChannelList, *model.AppError) {
+	if result := <-a.Srv.Store.Channel().GetChannelsByScheme(scheme.Id, offset, limit); result.Err != nil {
+		return nil, result.Err
+	} else {
+		return result.Data.(model.ChannelList), nil
+	}
+}
+
+func (a *App) IsPhase2MigrationCompleted() *model.AppError {
+	// TODO: Actually check the Phase 2 migration has completed before permitting these actions.
+
+	return nil
+}