Add dashboard delete command (#46)

Add command to delete dashboards:
arduino-cloud-cli dashboard delete --id <dashboardID>

* Add dashboard delete command

* Update readme

Author: Paolo Calao

README.md

@@ -123,4 +123,8 @@ The default OTA upload should complete in 10 minutes. Use `--deferred` flag to e
 
 Print a list of available dashboards and their widgets by using this command:
 
-`$ arduino-cloud-cli dashboard list --show-widgets`
+`$ arduino-cloud-cli dashboard list --show-widgets`
+
+Delete a dashboard with the following command:
+
+`$ arduino-cloud-cli dashboard delete --id <dashboardID>`

cli/dashboard/dashboard.go

@@ -29,6 +29,7 @@ func NewCommand() *cobra.Command {
 	}
 
 	dashboardCommand.AddCommand(initListCommand())
+	dashboardCommand.AddCommand(initDeleteCommand())
 
 	return dashboardCommand
 }

cli/dashboard/delete.go

@@ -0,0 +1,57 @@
+// This file is part of arduino-cloud-cli.
+//
+// Copyright (C) 2021 ARDUINO SA (http://www.arduino.cc/)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published
+// by the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package dashboard
+
+import (
+	"os"
+
+	"github.com/arduino/arduino-cli/cli/errorcodes"
+	"github.com/arduino/arduino-cli/cli/feedback"
+	"github.com/arduino/arduino-cloud-cli/command/dashboard"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+)
+
+var deleteFlags struct {
+	id string
+}
+
+func initDeleteCommand() *cobra.Command {
+	deleteCommand := &cobra.Command{
+		Use:   "delete",
+		Short: "Delete a dashboard",
+		Long:  "Delete a dashboard from Arduino IoT Cloud",
+		Run:   runDeleteCommand,
+	}
+	deleteCommand.Flags().StringVarP(&deleteFlags.id, "id", "i", "", "Dashboard ID")
+	deleteCommand.MarkFlagRequired("id")
+	return deleteCommand
+}
+
+func runDeleteCommand(cmd *cobra.Command, args []string) {
+	logrus.Infof("Deleting dashboard %s\n", deleteFlags.id)
+
+	params := &dashboard.DeleteParams{ID: deleteFlags.id}
+	err := dashboard.Delete(params)
+	if err != nil {
+		feedback.Errorf("Error during dashboard delete: %v", err)
+		os.Exit(errorcodes.ErrGeneric)
+	}
+
+	logrus.Info("Dashboard successfully deleted")
+}

command/dashboard/delete.go

@@ -0,0 +1,44 @@
+// This file is part of arduino-cloud-cli.
+//
+// Copyright (C) 2021 ARDUINO SA (http://www.arduino.cc/)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published
+// by the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package dashboard
+
+import (
+	"github.com/arduino/arduino-cloud-cli/internal/config"
+	"github.com/arduino/arduino-cloud-cli/internal/iot"
+)
+
+// DeleteParams contains the parameters needed to
+// delete a dashboard from Arduino IoT Cloud.
+type DeleteParams struct {
+	ID string
+}
+
+// Delete command is used to delete a dashboard
+// from Arduino IoT Cloud.
+func Delete(params *DeleteParams) error {
+	conf, err := config.Retrieve()
+	if err != nil {
+		return err
+	}
+	iotClient, err := iot.NewClient(conf.Client, conf.Secret)
+	if err != nil {
+		return err
+	}
+
+	return iotClient.DashboardDelete(params.ID)
+}

internal/iot/client.go

@@ -39,6 +39,7 @@ type Client interface {
 	ThingDelete(id string) error
 	ThingShow(id string) (*iotclient.ArduinoThing, error)
 	ThingList(ids []string, device *string, props bool) ([]iotclient.ArduinoThing, error)
+	DashboardDelete(id string) error
 	DashboardList() ([]iotclient.ArduinoDashboardv2, error)
 }
 
@@ -213,6 +214,16 @@ func (cl *client) DashboardList() ([]iotclient.ArduinoDashboardv2, error) {
 	return dashboards, nil
 }
 
+// DashboardDelete deletes a dashboard from Arduino IoT Cloud.
+func (cl *client) DashboardDelete(id string) error {
+	_, err := cl.api.DashboardsV2Api.DashboardsV2Delete(cl.ctx, id)
+	if err != nil {
+		err = fmt.Errorf("deleting dashboard: %w", errorDetail(err))
+		return err
+	}
+	return nil
+}
+
 func (cl *client) setup(client, secret string) error {
 	// Get the access token in exchange of client_id and client_secret
 	tok, err := token(client, secret)