package discord

import (
	"context"
	"fmt"
	"strconv"
	"strings"

	"go.jolheiser.com/xkcd"
)

func init() {
	commands["xkcd"] = command{
		validate: func(cmd commandInit) bool {
			return true
		},
		run: func(cmd commandInit) (string, error) {
			if !memeRateLimit.Try() {
				return "", nil
			}

			client := xkcd.New()

			var comic *xkcd.Comic
			var err error
			args := strings.Fields(cmd.message.Content)
			if len(args) < 2 {
				comic, err = client.Current(context.Background())
			} else {
				comicNum, err := strconv.Atoi(args[1])
				if err != nil {
					return "", err
				}
				comic, err = client.Comic(context.Background(), comicNum)
			}
			if err != nil {
				return "", err
			}

			return fmt.Sprintf("%d: %s\n%s\n%s", comic.Num, comic.SafeTitle, comic.Alt, comic.Img), nil
		},
		help: "Get an xkcd comic",
	}
}