package discord

import (
	"fmt"

	"github.com/bwmarrin/discordgo"
)

func init() {
	commands["welcome"] = command{
		validate: func(cmd commandInit) bool {
			return isStaff(cmd.message.Member.Roles, cmd.config.StaffRoles)
		},
		run: func(cmd commandInit) (string, error) {
			if err := cmd.session.ChannelMessageDelete(cmd.message.ChannelID, cmd.message.ID); err != nil {
				return "", err
			}

			orphans := make([]*discordgo.Member, 0)

			members, err := cmd.session.GuildMembers(cmd.message.GuildID, "", 1000)
			if err != nil {
				return "", err
			}
			for _, member := range members {
				if len(member.Roles) == 0 {
					orphans = append(orphans, member)
				}
			}

			resp := "There are no members without roles!"
			if len(orphans) > 0 {
				resp = "```\n"
				for _, orphan := range orphans {
					resp += fmt.Sprintf("<@%s>\n", orphan.User.ID)
				}
				resp += "```"
			}

			channel, err := cmd.session.UserChannelCreate(cmd.message.Author.ID)
			if err != nil {
				return "", nil
			}

			if _, err := cmd.session.ChannelMessageSend(channel.ID, resp); err != nil {
				return "", nil
			}

			return "", nil
		},
		help: "Get a list of people with no roles",
	}
}