package main

import (
	"math/rand"
	"strconv"
)

func GetDefaultDeck() []Card {
	cards := make([]Card, 0)
	for _, color := range []string{"GREEN", "BLUE", "RED", "YELLOW"} {
		for i := 0; i < 10; i++ {
			cards = append(cards, Card{
				color, strconv.Itoa(i),
			})
		}
		cards = append(cards, Card{
			color, "RETURN",
		})
		cards = append(cards, Card{
			color, "BLOCK",
		})
		cards = append(cards, Card{
			color, "DRAW2",
		})
	}
	cards = append(cards, Card{
		"BLACK", "CHOOSE",
	})
	cards = append(cards, Card{
		"BLACK", "DRAW4",
	})
	return cards
}

func GetGame(id string) *Game {
	return games[id]
}

func GetRandomCard(cards []Card) *Card {
	index := rand.Intn(len(cards))
	return &cards[index]
}

func FindCard(cards []Card, color string, value string) (*Card, bool) {
	for _, card := range cards {
		if card.Color == color && card.Value == value {
			return &card, true
		}
	}
	return nil, false
}

func FindOnHand(player *Player, card *Card) int {
	for index, handCard := range player.Hand {
		if handCard.Color == card.Color && handCard.Value == card.Value {
			return index
		}
	}
	return -1
}

func RemoveFromHand(player *Player, index int) []*Card {
	player.Hand[len(player.Hand)-1], player.Hand[index] = player.Hand[index], player.Hand[len(player.Hand)-1]
	return player.Hand[:len(player.Hand)-1]
}

func InitPlayer(game *Game, player *Player) {
	player.Game = game
	for i := 0; i < 10; i++ {
		player.Hand = append(player.Hand, GetRandomCard(game.AvailableCards))
	}
}

func DrawNextPlayer(game *Game, count int) {
	nextPlayer := game.GetNextPlayer()
	for i := 0; i < count; i++ {
		nextPlayer.Hand = append(nextPlayer.Hand, GetRandomCard(game.AvailableCards))
	}

	game.send("card.drawn", map[string]interface{}{
		"playerID": nextPlayer.ID,
		"count":    count,
	})
	nextPlayer.send("player.hand", map[string]interface{}{
		"cards": nextPlayer.Hand,
	})
}