"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 () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.measureFolderAsync = measureFolderAsync;
exports.findLargeFilesAsync = findLargeFilesAsync;
exports.terminateMeasureWorkers = terminateMeasureWorkers;
/**
 * Offloads filesystem walks to worker threads so the Electron main process stays responsive.
 * Pool of 2 workers balances throughput vs disk contention.
 */
const node_worker_threads_1 = require("node:worker_threads");
const path = __importStar(require("node:path"));
const POOL_SIZE = 2;
let pool = null;
let seq = 0;
const pendingMeasure = new Map();
const pendingLarge = new Map();
function workerScriptPath() {
    return path.join(__dirname, 'fsWorker.js');
}
function rejectAllPending(err) {
    for (const [, p] of pendingMeasure)
        p.reject(err);
    for (const [, p] of pendingLarge)
        p.reject(err);
    pendingMeasure.clear();
    pendingLarge.clear();
}
function ensurePool() {
    if (pool)
        return pool;
    pool = [];
    for (let i = 0; i < POOL_SIZE; i++) {
        const w = new node_worker_threads_1.Worker(workerScriptPath());
        w.on('message', (msg) => {
            if (pendingMeasure.has(msg.id)) {
                const p = pendingMeasure.get(msg.id);
                pendingMeasure.delete(msg.id);
                if (!msg.ok) {
                    p.reject(new Error(msg.error ?? 'measure failed'));
                    return;
                }
                if (msg.bytes !== undefined && msg.files !== undefined && msg.truncated !== undefined) {
                    p.resolve({ bytes: msg.bytes, files: msg.files, truncated: msg.truncated });
                }
                else {
                    p.reject(new Error('invalid measure response'));
                }
                return;
            }
            if (pendingLarge.has(msg.id)) {
                const p = pendingLarge.get(msg.id);
                pendingLarge.delete(msg.id);
                if (!msg.ok) {
                    p.reject(new Error(msg.error ?? 'large file scan failed'));
                    return;
                }
                if (msg.largeResults !== undefined) {
                    p.resolve(msg.largeResults);
                }
                else {
                    p.reject(new Error('invalid large-file response'));
                }
            }
        });
        w.on('error', (err) => {
            rejectAllPending(err);
        });
        pool.push(w);
    }
    return pool;
}
function measureFolderAsync(absPath) {
    const workers = ensurePool();
    const id = ++seq;
    return new Promise((resolve, reject) => {
        pendingMeasure.set(id, { resolve, reject });
        const w = workers[id % POOL_SIZE];
        w.postMessage({ id, kind: 'measure', root: absPath });
    });
}
function findLargeFilesAsync(root, minBytes, maxResults) {
    const workers = ensurePool();
    const id = ++seq;
    return new Promise((resolve, reject) => {
        pendingLarge.set(id, { resolve, reject });
        const w = workers[id % POOL_SIZE];
        w.postMessage({ id, kind: 'large', root, minBytes, maxResults });
    });
}
function terminateMeasureWorkers() {
    if (!pool)
        return;
    for (const w of pool) {
        try {
            w.terminate();
        }
        catch {
            /* ignore */
        }
    }
    pool = null;
    pendingMeasure.clear();
    pendingLarge.clear();
}