package main

import "github.com/bwmarrin/discordgo"

var trustCache map[string]float64

func getTrust(discordID string) (float64, error) {
	if v, ok := trustCache[discordID]; ok {
		return v, nil
	}
	votes, err := getTrustVote(discordID)
	if err != nil {
		return 0.0, err
	}
	votes = append(votes, 3)
	var total float64
	for _, v := range votes {
		total += float64(v)
	}
	return total / float64(len(votes)), nil
}

func getTotalTrust(s *discordgo.Session) (float64, error) {
	members, err := getAllMembers(s)
	if err != nil {
		return 0.0, err
	}
	var total float64
	for _, member := range members {
		trust, err := getTrust(member.User.ID)
		if err != nil {
			return 0.0, err
		}
		total += trust
	}
	return total, nil
}

func getAllMembers(s *discordgo.Session) ([]*discordgo.Member, error) {
	initial, err := s.GuildMembers(guildID, "", 1000)
	if err != nil {
		return nil, err
	}
	next := initial[len(initial)-1].User.ID
	for next != "" {
		nextArray, err := s.GuildMembers(guildID, next, 1000)
		if err != nil {
			return nil, err
		}
		if len(nextArray) == 0 {
			next = ""
		} else {
			next = nextArray[len(nextArray)-1].User.ID
			initial = append(initial, nextArray...)
		}
	}
	return initial, nil
}