Add CSV output formatter

cmd/signaldctl/cmd/get/account/account.go

@@ -57,17 +57,17 @@ var (
 			}
 
 			switch common.OutputFormat {
-			case "json":
+			case common.OutputFormatJSON:
 				err := json.NewEncoder(os.Stdout).Encode(accounts)
 				if err != nil {
 					log.Fatal(err, "error encoding response to stdout")
 				}
-			case "yaml":
+			case common.OutputFormatYAML:
 				err := yaml.NewEncoder(os.Stdout).Encode(accounts)
 				if err != nil {
 					log.Fatal(err, "error encoding response to stdout")
 				}
-			case "table":
+			case common.OutputFormatCSV, common.OutputFormatTable, common.OutputFormatDefault:
 				t := table.NewWriter()
 				t.SetOutputMirror(os.Stdout)
 				t.AppendHeader(table.Row{"Phone Number", "UUID", "Device ID", "Subscribed"})
@@ -76,7 +76,11 @@ var (
 					t.AppendRow(table.Row{account.Username, account.UUID, account.DeviceID, account.Subscribed})
 				}
 
-				t.Render()
+				if common.OutputFormat == common.OutputFormatCSV {
+					t.RenderCSV()
+				} else {
+					t.Render()
+				}
 			default:
 				log.Fatal("Unsupported output format")
 			}

cmd/signaldctl/cmd/get/group/group.go

@@ -67,17 +67,17 @@ var (
 			}
 
 			switch common.OutputFormat {
-			case "json":
+			case common.OutputFormatJSON:
 				err := json.NewEncoder(os.Stdout).Encode(resp)
 				if err != nil {
 					log.Fatal(err, "error encoding response to stdout")
 				}
-			case "yaml":
+			case common.OutputFormatYAML:
 				err := yaml.NewEncoder(os.Stdout).Encode(resp)
 				if err != nil {
 					log.Fatal(err, "error encoding response to stdout")
 				}
-			case "table":
+			case common.OutputFormatCSV, common.OutputFormatTable, common.OutputFormatDefault:
 				t := table.NewWriter()
 				t.SetOutputMirror(os.Stdout)
 				t.AppendHeader(table.Row{"ID", "Title", "Members"})
@@ -90,7 +90,11 @@ var (
 					t.AppendRow(table.Row{group.GroupId, group.Name, len(group.Members)})
 				}
 
-				t.Render()
+				if common.OutputFormat == common.OutputFormatCSV {
+					t.RenderCSV()
+				} else {
+					t.Render()
+				}
 			default:
 				log.Fatal("Unsupported output format")
 			}

cmd/signaldctl/cmd/version.go

@@ -51,23 +51,27 @@ var versionCmd = &cobra.Command{
 			},
 		}
 		switch common.OutputFormat {
-		case "json":
+		case common.OutputFormatJSON:
 			err := json.NewEncoder(os.Stdout).Encode(output)
 			if err != nil {
 				log.Fatal(err, "error encoding response to stdout")
 			}
-		case "yaml":
+		case common.OutputFormatYAML:
 			err := yaml.NewEncoder(os.Stdout).Encode(output)
 			if err != nil {
 				log.Fatal(err, "error encoding response to stdout")
 			}
-		case "table":
+		case common.OutputFormatCSV, common.OutputFormatTable, common.OutputFormatDefault:
 			t := table.NewWriter()
 			t.SetOutputMirror(os.Stdout)
 			t.AppendHeader(table.Row{"Name", "Version", "Branch", "Commit"})
 			t.AppendRow(table.Row{common.Name, common.Version, common.Branch, common.Commit})
 			t.AppendRow(table.Row{response.Name, response.Version, response.Branch, response.Commit})
-			t.Render()
+			if common.OutputFormat == common.OutputFormatCSV {
+				t.RenderCSV()
+			} else {
+				t.Render()
+			}
 		default:
 			log.Fatal("Unsupported output format")
 		}

cmd/signaldctl/common/output-formats.go

@@ -0,0 +1,9 @@
+package common
+
+const (
+	OutputFormatDefault = "default"
+	OutputFormatCSV     = "csv"
+	OutputFormatTable   = "table"
+	OutputFormatJSON    = "json"
+	OutputFormatYAML    = "yaml"
+)