package mapobject

import (
	"mapserver/mapblockparser"
	"mapserver/mapobjectdb"
	"strconv"
	"math"
)

type SmartShopBlock struct{}

func (this *SmartShopBlock) onMapObject(x, y, z int, block *mapblockparser.MapBlock) []*mapobjectdb.MapObject {
	list := make([]*mapobjectdb.MapObject, 4)

	md := block.Metadata.GetMetadata(x, y, z)
	invMap := block.Metadata.GetInventoryMapAtPos(x, y, z)
	mainInv := invMap["main"]

	if mainInv.IsEmpty() {
		return list
	}

	for i := 1; i <= 4; i++ {
		payInvName := "pay" + strconv.Itoa(i)
		giveInvName := "give" + strconv.Itoa(i)

		pay := invMap[payInvName]
		give := invMap[giveInvName]

		if pay.IsEmpty() || give.IsEmpty() {
			continue
		}

		o := mapobjectdb.NewMapObject(block.Pos, x, y, z, "shop")
		o.Attributes["type"] = "smartshop"
		o.Attributes["owner"] = md["owner"]

		in_item := pay.Items[0].Name
		in_count := math.Max(1, float64(pay.Items[0].Count))

		out_item := give.Items[0].Name
		out_count := math.Max(1, float64(give.Items[0].Count))

		stock := 0

		for _, item := range mainInv.Items {
				if item.Name == out_item {
						stock += item.Count
				}
		}

		//multiples of out_count
		stock_factor := math.Floor( float64(stock) / float64(out_count) )

		o.Attributes["in_item"] = in_item
		o.Attributes["in_count"] = strconv.Itoa(int(in_count))
		o.Attributes["out_item"] = out_item
		o.Attributes["out_count"] = strconv.Itoa(int(out_count))
		o.Attributes["stock"] = strconv.Itoa(int(stock_factor))

		list = append(list, o)
	}

	return list
}