"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const pinkie_1 = __importDefault(require("pinkie"));
const RequireAnalyzer = __importStar(require("./legacy/analysis/require_analyzer"));
const array_remove_1 = __importDefault(require("../utils/array-remove"));
class RequireReader {
    constructor(descriptorsCache, hammerheadProcessScript) {
        this.descriptorsCache = descriptorsCache || {};
        this.readings = [];
        this.waiters = {};
        this.hammerheadProcessScript = hammerheadProcessScript;
    }
    async _analyzeRequire(require, filename, sourceIndex) {
        this.readings.push(require);
        return new pinkie_1.default(resolve => {
            RequireAnalyzer.run(require, filename, sourceIndex, this.hammerheadProcessScript, (errs, descriptor) => {
                this.descriptorsCache[require] = descriptor;
                (0, array_remove_1.default)(this.readings, require);
                resolve({ errs, descriptor });
                if (this.waiters[require]) {
                    this.waiters[require].forEach(waiter => waiter(descriptor));
                    this.waiters[require] = null;
                }
            });
        });
    }
    async _waitForReading(require) {
        return new pinkie_1.default(resolve => {
            if (!this.waiters[require])
                this.waiters[require] = [];
            this.waiters[require].push(descriptor => resolve({ descriptor, fromCache: true }));
        });
    }
    async read(require, filename, sourceIndex) {
        if (this.descriptorsCache[require]) {
            return {
                descriptor: this.descriptorsCache[require],
                fromCache: true
            };
        }
        if (this.readings.indexOf(require) > -1)
            return await this._waitForReading(require);
        return this._analyzeRequire(require, filename, sourceIndex);
    }
}
exports.default = RequireReader;