package moe.nea.ledger.modules

import moe.nea.ledger.ItemChange
import moe.nea.ledger.ItemId
import moe.nea.ledger.LedgerEntry
import moe.nea.ledger.LedgerLogger
import moe.nea.ledger.SHORT_NUMBER_PATTERN
import moe.nea.ledger.TransactionType
import moe.nea.ledger.events.ChatReceived
import moe.nea.ledger.events.GuiClickEvent
import moe.nea.ledger.getDisplayNameU
import moe.nea.ledger.getLore
import moe.nea.ledger.parseShortNumber
import moe.nea.ledger.unformattedString
import moe.nea.ledger.useMatcher
import moe.nea.ledger.utils.Inject
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent
import net.minecraftforge.fml.common.gameevent.TickEvent
import java.time.Instant
import java.util.regex.Pattern

class DungeonChestDetection @Inject constructor(val logger: LedgerLogger) {

	/*{
		id: "minecraft:chest",
		Count: 1b,
		tag: {
			display: {
				Lore: ["§7Purchase this chest to receive the", "§7rewards above. You can only open", "§7one chest per Dungeons run -", "§7choose wisely!", "", "§7Cost", "§625,000 Coins", "§9Dungeon Chest Key", "", "§7§cNOTE: Coins are withdrawn from your", "§cbank if you don't have enough in", "§cyour purse."],
				Name: "§aOpen Reward Chest"
			}
		},
		Damage: 0s
	}

	{
	id: "minecraft:feather",
	Count: 1b,
	tag: {
		overrideMeta: 1b,
		ench: [],
		HideFlags: 254,
		display: {
			Lore: ["§7Consume a §9Kismet Feather §7to reroll", "§7the loot within this chest.", "", "§7You may only use a feather once", "§7per dungeon run.", "", "§eClick to reroll this chest!"],
			Name: "§aReroll Chest"
		},
		AttributeModifiers: []
	},
	Damage: 0s
}
	*/
	val costPattern = Pattern.compile("(?<cost>$SHORT_NUMBER_PATTERN) Coins")


	data class ChestCost(
		val cost: Double,
		val openTimestamp: Long,
		val hasKey: Boolean,
	)

	var lastOpenedChest: ChestCost? = null

	@SubscribeEvent
	fun onKismetClick(event: GuiClickEvent) {
		val slot = event.slotIn ?: return
		if (!slot.inventory.displayName.unformattedText.unformattedString().endsWith(" Chest")) return
		val stack = slot.stack ?: return
		if (stack.getDisplayNameU() == "§aReroll Chest") {
			logger.logEntry(
				LedgerEntry(
					TransactionType.KISMET_REROLL,
					Instant.now(),
					listOf(
						ItemChange.lose(ItemId.KISMET_FEATHER, 1)
					)
				)
			)
		}
	}

	@SubscribeEvent
	fun onRewardChestClick(event: GuiClickEvent) {
		val slot = event.slotIn ?: return
		if (!slot.inventory.displayName.unformattedText.unformattedString().endsWith(" Chest")) return
		val stack = slot.stack ?: return
		val name = stack.getDisplayNameU()
		if (name != "§aOpen Reward Chest") return
		val lore = stack.getLore()
		val costIndex = lore.indexOf("§7Cost")
		if (costIndex < 0 || costIndex + 1 !in lore.indices) return
		val cost = costPattern.useMatcher(lore[costIndex + 1].unformattedString()) {
			parseShortNumber(group("cost"))
		} ?: 0.0 // Free chest!
		val hasKey = lore.contains("§9Dungeon Chest Key")
		lastOpenedChest?.let(::completeTransaction)
		lastOpenedChest = ChestCost(cost, System.currentTimeMillis(), hasKey)
	}

	@SubscribeEvent
	fun onChatMessage(event: ChatReceived) {
		if (event.message == "You don't have that many coins in the bank!")
			lastOpenedChest = null
	}

	fun completeTransaction(toOpen: ChestCost) {
		lastOpenedChest = null
		logger.logEntry(
			LedgerEntry(
				TransactionType.DUNGEON_CHEST_OPEN,
				Instant.ofEpochMilli(toOpen.openTimestamp),
				listOfNotNull(
					if (toOpen.hasKey) ItemChange.lose(ItemId.DUNGEON_CHEST_KEY, 1) else null,
					ItemChange.loseCoins(toOpen.cost)
				),
			)
		)
	}

	@SubscribeEvent
	fun onTick(event: TickEvent) {
		val toOpen = lastOpenedChest
		if (toOpen != null && toOpen.openTimestamp + 1000L < System.currentTimeMillis()) {
			completeTransaction(toOpen)
		}
	}
}