package discord

import (
	"fmt"
	"strings"

	"go.etztech.xyz/go-mcm"
	"go.etztech.xyz/go-mcm/model/django"
)

func init() {
	commands["register"] = command{
		validate: func(cmd commandInit) bool {
			return len(cmd.message.Member.Roles) == 0
		},
		run: func(cmd commandInit) (string, error) {
			args := strings.Fields(cmd.message.Content)
			if len(args) < 2 {
				return "You must give this command your application username", nil
			}

			sendTyping(cmd.session, cmd.message.ChannelID)

			manager := mcm.NewMCM(cmd.config.MCMToken, cmd.config.MCMURL)
			models := manager.NewModel()

			players, err := models.Player(models.NewDjangoBuilder().IExact(django.PlayerUsername, args[1]))
			if err != nil {
				return "", err
			}

			apps, err := models.Application(models.NewDjangoBuilder().IExact(django.ApplicationUsername, args[1]))
			if err != nil {
				return "", err
			}

			var nickname string
			var accepted *bool
			if len(players) > 0 {
				nickname = players[0].Username
				if len(apps) == 0 {
					apps, err = models.Application(models.NewDjangoBuilder().Eq(django.ApplicationID, players[0].ApplicationID))
					if len(apps) == 0 {
						return "Something went wrong, please contact staff", nil
					}
				}
			} else if len(apps) > 0 {
				if apps[0].Accepted != nil && *apps[0].Accepted {
					return "Please join the server and then re-try this command", nil
				}
			} else {
				return "No player or applications found for that username", nil
			}
			accepted = apps[0].Accepted

			if accepted == nil {
				return "Your application is still being reviewed, hang tight", nil
			} else if !*accepted {
				return "Your application was denied, good luck finding a new server", nil
			}

			// Accepted
			if err := cmd.session.GuildMemberNickname(cmd.message.GuildID, cmd.message.Author.ID, nickname); err != nil {
				return "", err
			}
			if err := cmd.session.GuildMemberRoleAdd(cmd.message.GuildID, cmd.message.Author.ID, cmd.config.RegisterRole); err != nil {
				return "", err
			}

			// Don't return feedback because this goes in a different channel
			sendMessage(cmd.session, cmd.config.RegisteredChannel, fmt.Sprintf("Welcome, **%s**!", cmd.message.Author.Mention()))
			return "", nil
		},
		help: "Register yourself with the Discord",
	}
}