package handlers

import (
	"synlotto-website/models"
)

func MatchTicketToDraw(ticket models.Ticket, draw models.DrawResult, rules []models.PrizeRule) models.MatchResult {
	mainMatches := countMatches(ticket.Balls, draw.Balls)
	bonusMatches := countMatches(ticket.BonusBalls, draw.BonusBalls)

	prizeTier := getPrizeTier(ticket.GameType, mainMatches, bonusMatches, rules)
	isWinner := prizeTier != ""

	return models.MatchResult{
		MatchedDrawID: draw.DrawID,
		MatchedMain:   mainMatches,
		MatchedBonus:  bonusMatches,
		PrizeTier:     prizeTier,
		IsWinner:      isWinner,
	}
}

func countMatches(a, b []int) int {
	m := make(map[int]bool)
	for _, n := range b {
		m[n] = true
	}
	match := 0
	for _, n := range a {
		if m[n] {
			match++
		}
	}
	return match
}

func getPrizeTier(game string, main, bonus int, rules []models.PrizeRule) string {
	for _, rule := range rules {
		if rule.Game == game && rule.MainMatches == main && rule.BonusMatches == bonus {
			return rule.Tier
		}
	}
	return ""
}