"use strict";
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var __importStar = (this && this.__importStar) || function (mod) {
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};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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Object.defineProperty(exports, "__esModule", { value: true });
exports.Tool = exports.error = void 0;
const Inventory_1 = require("./Inventory");
const nbt = __importStar(require("prismarine-nbt"));
function error(name, message) {
    const e = new Error(message);
    e.name = name;
    return e;
}
exports.error = error;
/**
 * The main class object for the tool plugin.
 */
class Tool {
    /**
       * Creates a new tool plugin instance.
       *
       * @param bot - The bot the plugin is running on.
       */
    constructor(bot) {
        /**
           * A list of chest locations that the bot is allowed to retrieve items from
           * when using the "getFromChest" option.
           */
        this.chestLocations = [];
        this.bot = bot;
    }
    /**
       * Gets the number of ticks required to mine the target block with the given item.
       *
       * @param block - The block to test against.
       * @param item - The item to test with.
       *
       * @returns The number of ticks it would take to mine.
       */
    getDigTime(block, item) {
        const effects = this.bot.entity.effects;
        const enchants = (item === null || item === void 0 ? void 0 : item.nbt) != null ? nbt.simplify(item.nbt).Enchantments : [];
        // @ts-expect-error ; enchants/effects not in digTime typescript header
        return block.digTime(item === null || item === void 0 ? void 0 : item.type, false, false, false, enchants, effects);
    }
    /**
       * Gets the item currently in the bot's hand.
       */
    itemInHand() {
        return this.bot.inventory.slots[this.bot.getEquipmentDestSlot('hand')];
    }
    /**
       * Checks if the best item in the item list is faster than the item in
       * the bot's hand.
       *
       * @param block - The block to test against.
       * @param itemList - The item list to test against.
       *
       * @returns True if the items in the list are better. False if they are worse or
       *          equal to what's already in the bot's hand.
       */
    isBetterMiningTool(block, itemList) {
        const item = this.itemInHand();
        if (item == null)
            return true;
        if (!itemList.includes(item))
            return true;
        return this.getDigTime(block, itemList[0]) < this.getDigTime(block, item);
    }
    /**
       * This function can be used to equip the best tool currently in the bot's
       * inventory for breaking the given block.
       *
       * @param block - The block the bot is attempting to break.
       * @param options - The options to use for equipping the correct tool.
       * @param cb - The callback.
       */
    equipForBlock(block, options = {}, cb) {
        return __awaiter(this, void 0, void 0, function* () {
            let itemList = [...this.bot.inventory.items()];
            // Add an "undefined" item if the bot has empty space in it's inventory.
            if (this.bot.inventory.emptySlotCount() >= 1) {
                itemList.unshift(undefined);
            }
            if (options.requireHarvest != null && options.requireHarvest) {
                itemList = itemList.filter(item => block.canHarvest(item != null ? item.type : null));
            }
            itemList.sort((a, b) => this.getDigTime(block, a) - this.getDigTime(block, b));
            if (itemList.length === 0) {
                if (options.getFromChest != null && options.getFromChest) {
                    try {
                        yield (0, Inventory_1.retrieveTools)(this.bot, {
                            toolFilter: Inventory_1.standardToolFilter,
                            chestLocations: this.chestLocations,
                            toolCostFilter: (item) => this.getDigTime(block, item),
                            maxTools: options.maxTools
                        });
                        yield this.equipForBlock(block, options);
                    }
                    catch (err) {
                        if (err != null && (cb != null))
                            cb(err);
                        throw err;
                    }
                    if (cb != null)
                        cb();
                    return;
                }
                if (options.requireHarvest != null && options.requireHarvest) {
                    const err = error('NoItem', 'Bot does not have a harvestable tool!');
                    if (cb != null)
                        cb(err);
                    throw err;
                }
                else {
                    if (cb != null)
                        cb();
                }
                return;
            }
            // Don't change item if it has the same performance as the equipped item.
            // Otherwise you just create unneeded equipment calls and can potentially
            // get stuck in an infinite loop in some conditions.
            if (!this.isBetterMiningTool(block, itemList)) {
                if (cb != null)
                    cb();
                return;
            }
            const best = itemList[0];
            try {
                if (best != null) {
                    yield this.bot.equip(best, 'hand');
                }
                else {
                    yield this.bot.unequip('hand');
                }
            }
            catch (err) {
                if (cb != null)
                    cb(err);
                throw err;
            }
            if (cb != null)
                cb();
        });
    }
}
exports.Tool = Tool;