/**
 * This file is part of the NocoBase (R) project.
 * Copyright (c) 2020-2024 NocoBase Co., Ltd.
 * Authors: NocoBase Team.
 *
 * This project is dual-licensed under AGPL-3.0 and NocoBase Commercial License.
 * For more information, please refer to: https://www.nocobase.com/agreement.
 */

var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
  // If the importer is in node compatibility mode or this is not an ESM
  // file that has been converted to a CommonJS file using a Babel-
  // compatible transform (i.e. "__esModule" has not been set), then set
  // "default" to the CommonJS "module.exports" for node compatibility.
  isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
  mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var loader_exports = {};
__export(loader_exports, {
  DocumentLoader: () => DocumentLoader
});
module.exports = __toCommonJS(loader_exports);
var import_node_worker_threads = require("node:worker_threads");
var import_constants = require("./constants");
var import_node_path = __toESM(require("node:path"));
var import_utils = require("./utils");
class DocumentLoader {
  constructor(fileManager) {
    this.fileManager = fileManager;
  }
  async load(file) {
    const extname = (0, import_utils.resolveExtname)(file);
    if (!import_constants.SUPPORTED_DOCUMENT_EXTNAMES.includes(extname)) {
      return [];
    }
    const { stream, contentType } = await this.fileManager.getFileStream(file);
    const blob = await this.streamToBlob(stream, contentType ?? file.mimetype);
    return await this.loadByWorker(extname, blob);
  }
  async streamToBlob(stream, mimeType = "application/octet-stream") {
    const chunks = [];
    for await (const chunk of stream) {
      chunks.push(chunk);
    }
    return new Blob(chunks, { type: mimeType });
  }
  async loadByWorker(extname, blob) {
    const buffer = Buffer.from(await blob.arrayBuffer());
    const isTsRuntime = __filename.endsWith(".ts");
    const workerPath = import_node_path.default.join(__dirname, `loader.worker.${isTsRuntime ? "ts" : "js"}`);
    const worker = new import_node_worker_threads.Worker(workerPath, {
      execArgv: isTsRuntime ? ["--require", "tsx/cjs"] : void 0
    });
    return new Promise((resolve, reject) => {
      let settled = false;
      const close = (error, result) => {
        if (settled) {
          return;
        }
        settled = true;
        if (error) {
          reject(error);
          return;
        }
        resolve(result || []);
      };
      worker.once("message", (payload) => {
        if (payload == null ? void 0 : payload.error) {
          close(new Error(payload.error));
          return;
        }
        close(void 0, (payload == null ? void 0 : payload.documents) || []);
      });
      worker.once("error", (error) => close(error));
      worker.once("exit", (code) => {
        if (!settled && code !== 0) {
          close(new Error(`Document loader worker exited with code ${code}`));
        }
      });
      worker.postMessage({
        extname,
        mimeType: blob.type,
        buffer: Uint8Array.from(buffer)
      });
    }).finally(() => {
      worker.terminate().catch(() => void 0);
    });
  }
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  DocumentLoader
});
