add list subcommand

add renderKindList()

cmd/lottery/list.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+
+	"github.com/onyx-and-iris/lottery-cli"
+)
+
+// listCmd represents the list command.
+var listCmd = &cobra.Command{
+	Use:     "list",
+	Aliases: []string{"ls"},
+	Short:   "List all available lottery kinds.",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		fmt.Println(renderKindList(lottery.AllKinds()))
+		return nil
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(listCmd)
+}

cmd/lottery/render.go

@@ -134,6 +134,7 @@ func maxLineWidth(blocks []string) int {
 	return maxWidth
 }
 
+// renderDrawCollection renders a collection of draw entries into a single string with a title and separator lines.
 func renderDrawCollection(title string, entries []string) string {
 	if len(entries) == 0 {
 		return ""
@@ -149,3 +150,25 @@ func renderDrawCollection(title string, entries []string) string {
 
 	return cardStyle.Render(title + "\n" + body)
 }
+
+// renderKindList renders a list of lottery kinds into a formatted string.
+func renderKindList(kinds []lottery.Kind) string {
+	lines := make([]string, 0, len(kinds)+1)
+	lines = append(
+		lines,
+		labelStyle.Render("Total:")+" "+numbersStyle.Render(strconv.Itoa(len(kinds))),
+	)
+
+	for _, kind := range kinds {
+		lines = append(
+			lines,
+			specialStyle.Render("•")+
+				" "+numbersStyle.Render(kindPromptLabel(kind))+
+				" "+labelStyle.Render("("+string(kind)+")"),
+		)
+	}
+
+	return cardStyle.Render(
+		titleStyle.Render("Available lottery kinds") + "\n" + strings.Join(lines, "\n"),
+	)
+}