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package main

import (
	"context"
	"fmt"
	"log"
	"os"
	"strings"

	"github.com/urfave/cli/v3"
)

func main() {
	cmd := &cli.Command{
		Commands: []*cli.Command{
			{

				Name:    "add",
				Aliases: []string{"a"},
				Usage:   "add a task to the list",
				Action: func(ctx context.Context, cmd *cli.Command) error {
					args := cmd.Args().Slice()
					task := strings.Join(args, " ")

					return cmdAdd(task)
				},
			},
			{
				Name:    "do",
				Aliases: []string{"d"},
				Usage:   "complete a task on the list",
				Arguments: []cli.Argument{
					&cli.IntArg{
						Name: "taskIndex",
					},
				},
				Action: func(ctx context.Context, cmd *cli.Command) error {
					taskIndex := cmd.IntArg("taskIndex")

					// If taskIndex is 0, it's
					// likely missing; any other
					// non-positive value is a
					// deliberate
					// misconfiguration.
					if taskIndex <= 0 {
						return fmt.Errorf("invalid 'do' argument: %d", taskIndex)
					}

					return cmdDo(taskIndex)
				},
			},
			{
				Name:    "list",
				Aliases: []string{"l"},
				Usage:   "list pending tasks",
				Action: func(ctx context.Context, cmd *cli.Command) error {
					return cmdList()
				},
			},
		},
	}

	if err := cmd.Run(context.Background(), os.Args); err != nil {
		log.Fatal(err)
	}
}