add table output to preview subcommand

cmd/signaldctl/cmd/group/preview/preview.go

@@ -22,7 +22,9 @@ import (
 	"os"
 	"strings"
 
+	"github.com/jedib0t/go-pretty/v6/table"
 	"github.com/spf13/cobra"
+	"gopkg.in/yaml.v2"
 
 	"gitlab.com/signald/signald-go/cmd/signaldctl/common"
 	"gitlab.com/signald/signald-go/cmd/signaldctl/config"
@@ -68,8 +70,30 @@ var (
 			}
 
 			switch common.OutputFormat {
-			case common.OutputFormatJSON, common.OutputFormatDefault:
+			case common.OutputFormatJSON:
 				return json.NewEncoder(os.Stdout).Encode(info)
+			case common.OutputFormatYAML:
+				return yaml.NewEncoder(os.Stdout).Encode(info)
+			case common.OutputFormatDefault, common.OutputFormatTable:
+				t := table.NewWriter()
+				t.SetOutputMirror(os.Stdout)
+
+				joinApproval := "unknown"
+				switch info.AddFromInviteLink {
+				case 3:
+					joinApproval = "yes"
+				case 1:
+					joinApproval = "no"
+				}
+
+				t.AppendRows([]table.Row{
+					table.Row{"Title", info.Title},
+					table.Row{"Group ID", info.GroupID},
+					table.Row{"Member Count", info.MemberCount},
+					table.Row{"Membership Approval", joinApproval},
+				})
+				common.StylizeTable(t)
+				t.Render()
 			}
 
 			return nil