package main

import (
	"github.com/bwmarrin/discordgo"
	"github.com/sirupsen/logrus"
	"golang.org/x/exp/slices"
)

// Populate Users map for the first launch
// This variable will be keep as sort of cache for all
// operation
func populateUserRole(discordClient *discordgo.Session) error {
	Users = make(map[string]*UserRole)
	APIResponse, err := getUsers42CTF()
	if err != nil {
		return err
	}

	for id, rank := range APIResponse {
		tmp, err := discordClient.GuildMember(guild, id)
		if err == nil {
			if slices.Contains(tmp.Roles, rolesID["top1"]) {
				Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top1"]}
			} else if slices.Contains(tmp.Roles, rolesID["top10"]) {
				Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top10"]}
			} else if slices.Contains(tmp.Roles, rolesID["top50"]) {
				Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top50"]}
			} else {
				Users[id] = &UserRole{Rank: rank, CurrentRole: ""}
			}
		} else {
			logrus.WithFields(logrus.Fields{
				"id": id,
				"rank": rank,
			}).Error(err.Error())
		}
	}
	return nil
}

func updateUserRole(discordClient *discordgo.Session, dryrun bool) error {
	APIResponse, err := getUsers42CTF()
	if err != nil {
		return err
	}
	for id, rank := range APIResponse {
		tmp, err := discordClient.GuildMember(guild, id)
		if err == nil {
			if slices.Contains(tmp.Roles, rolesID["top1"]) {
				Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top1"]}
			} else if slices.Contains(tmp.Roles, rolesID["top10"]) {
				Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top10"]}
			} else if slices.Contains(tmp.Roles, rolesID["top50"]) {
				Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top50"]}
			} else {
				Users[id] = &UserRole{Rank: rank, CurrentRole: ""}
			}
		} else {
			logrus.WithFields(logrus.Fields{
				"id": id,
				"rank": rank,
			}).Error(err.Error())
		}
		user, exist := Users[id]
		if exist {
			if user.Rank != rank {
				logrus.Info("New rank (", rank, ") for user ", id)
				if user.CurrentRole != "" {
					logrus.Info("Remove role for ", id)
					removeRole(discordClient, guild, id, user.CurrentRole, dryrun)
					Users[id] = &UserRole{Rank: rank, CurrentRole: ""}
				}
				if rank == 1 {
					logrus.Info("Add role `top1` for ", id)
					addRole(discordClient, guild, id, rolesID["top1"], dryrun)
					Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top1"]}
				} else if rank <= 10 {
					logrus.Info("Add role `top10` for ", id)
					addRole(discordClient, guild, id, rolesID["top10"], dryrun)
					Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top10"]}
				} else if rank <= 50 {
					logrus.Info("Add role `top50` for ", id)
					addRole(discordClient, guild, id, rolesID["top50"], dryrun)
					Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top50"]}
				}
			}
		}
	}
	return nil
}

func forceUpdate(discordClient *discordgo.Session, dryrun bool) (error) {
	APIResponse, err := getUsers42CTF()
	if err != nil {
		return err
	}
	for id, rank := range APIResponse {
		tmp, err := discordClient.GuildMember(guild, id)
		if err == nil {
			if slices.Contains(tmp.Roles, rolesID["top1"]) {
				removeRole(discordClient, guild, id, rolesID["top1"], dryrun)
			}
			if slices.Contains(tmp.Roles, rolesID["top10"]) {
				removeRole(discordClient, guild, id, rolesID["top10"], dryrun)
			}
			if slices.Contains(tmp.Roles, rolesID["top50"]) {
				removeRole(discordClient, guild, id, rolesID["top50"], dryrun)
			}
			Users[id] = &UserRole{Rank: rank, CurrentRole: ""}
		} else {
			logrus.Error("ID not found", id)
		}
		_, exist := Users[id]
		if exist {
			if rank == 1 {
				logrus.Info("Add role `top1` for ", id)
				addRole(discordClient, guild, id, rolesID["top1"], dryrun)
				Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top1"]}
			} else if rank <= 10 {
				logrus.Info("Add role `top10` for ", id)
				addRole(discordClient, guild, id, rolesID["top10"], dryrun)
				Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top10"]}
			} else if rank <= 50 {
				logrus.Info("Add role `top50` for ", id)
				addRole(discordClient, guild, id, rolesID["top50"], dryrun)
				Users[id] = &UserRole{Rank: rank, CurrentRole: rolesID["top50"]}
			}
		}
	}
	return nil
}