package commands

import (
	"strconv"
	"strings"

	"github.com/bwmarrin/discordgo"

	"gitea.teamortix.com/chanbakjsd/Milen/util"
)

func handleRoll(dg *discordgo.Session, m *discordgo.MessageCreate, arguments []string) {
	if len(arguments) > 1 {
		util.SendFailEmbed(dg, m.ChannelID, "Error", "Expected zero or one argument.")
		return
	}
	var argument string
	if len(arguments) == 0 {
		argument = "6"
	} else {
		argument = arguments[0]
	}

	split := strings.SplitN(argument, "d", 2)
	if len(split) == 1 {
		split = []string{"1", split[0]}
	}
	if split[0] == "" {
		split[0] = "1"
	}

	numberOfDice, err := strconv.Atoi(split[0])
	if err != nil || numberOfDice < 1 {
		util.SendFailEmbed(dg, m.ChannelID, "Error", "Unknown dice format. Expected `[num]d[amount of sides]`.")
		return
	}
	if numberOfDice > 5 {
		util.SendFailEmbed(dg, m.ChannelID, "Error", "I only have five dice.")
		return
	}
	numberOfSides, err := strconv.Atoi(split[1])
	if err != nil || numberOfSides < 1 {
		util.SendFailEmbed(dg, m.ChannelID, "Error", "Unknown dice format. Expected `[num]d[amount of sides]`.")
		return
	}
	if numberOfSides > 10000 {
		util.SendFailEmbed(dg, m.ChannelID, "Error", "The largest dice I have only has 10000 sides.")
		return
	}

	result := make([]string, 0, numberOfDice)
	for i := 0; i < numberOfDice; i++ {
		result = append(result, strconv.Itoa(util.Rand.Intn(numberOfSides)+1))
	}
	util.SendEmbed(dg, m.ChannelID, &discordgo.MessageEmbed{
		Title:       "Roll Results",
		Description: "Your roll results are: " + util.FormatCommaSeparatedList(result),
		Color:       0x00D000,
	})
}