Add rm command to delete results

internal/cli/rm/rm.go

@@ -0,0 +1,51 @@
+package rm
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/alecthomas/kingpin"
+	"github.com/apex/log"
+	"github.com/ooni/probe-cli/internal/cli/root"
+	"github.com/ooni/probe-cli/internal/database"
+	survey "gopkg.in/AlecAivazis/survey.v1"
+	db "upper.io/db.v3"
+)
+
+func init() {
+	cmd := root.Command("rm", "Delete a result")
+	yes := cmd.Flag("yes", "Skip interactive prompt").Bool()
+
+	resultID := cmd.Arg("id", "the id of the result to delete").Int64()
+
+	cmd.Action(func(_ *kingpin.ParseContext) error {
+		ctx, err := root.Init()
+		if err != nil {
+			log.Errorf("%s", err)
+			return err
+		}
+
+		if *yes == true {
+			err = database.DeleteResult(ctx.DB, *resultID)
+			if err == db.ErrNoMoreRows {
+				return errors.New("result not found")
+			}
+			return err
+		}
+		answer := ""
+		confirm := &survey.Select{
+			Message: fmt.Sprintf("Are you sure you wish to delete the result #%d", *resultID),
+			Options: []string{"true", "false"},
+			Default: "false",
+		}
+		survey.AskOne(confirm, &answer, nil)
+		if answer == "false" {
+			return errors.New("canceled by user")
+		}
+		err = database.DeleteResult(ctx.DB, *resultID)
+		if err == db.ErrNoMoreRows {
+			return errors.New("result not found")
+		}
+		return err
+	})
+}