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FileDownloader-Module

Module providing file download functionality with GET and POST support

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://updategreasyfork.deno.dev/scripts/530648/1558616/FileDownloader-Module.js 

// ==UserScript==
// @name FileDownloader-Module
// @namespace http://tampermonkey.net/
// @version 1.0
// @description Module providing file download functionality with GET and POST support
// @author maanimis
// @grant GM_xmlhttpRequest
// @run-at document-start
// ==/UserScript==

(function () {
  'use strict';

  class FileDownloader {
    static async fetchAsBlob(url, options = {}) {
      const defaultOptions = {
        method: 'GET',
        headers: {},
        body: null,
      };

      const fetchOptions = { ...defaultOptions, ...options };

      return new Promise((resolve, reject) => {
        GM_xmlhttpRequest({
          method: fetchOptions.method,
          url: url,
          headers: fetchOptions.headers,
          data: fetchOptions.body,
          responseType: 'blob',
          onload: function (response) {
            if (response.status >= 200 && response.status < 300) {
              resolve(response.response);
            } else {
              reject(new Error(`HTTP error! Status: ${response.status}`));
            }
          },
          onerror: function (error) {
            reject(new Error('Network error occurred'));
          },
        });
      });
    }

    static async fetchWithPost(url, data, headers = {}) {
      const options = {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          ...headers,
        },
        body: JSON.stringify(data),
      };
      return this.fetchAsBlob(url, options);
    }

    static async fetchWithFormData(url, formData, headers = {}) {
      // When using FormData with GM_xmlhttpRequest, we don't need to set Content-Type
      // as it will be set automatically with the correct boundary
      const options = {
        method: 'POST',
        headers: {
          ...headers,
        },
        body: formData,
      };
      return this.fetchAsBlob(url, options);
    }

    static createObjectUrl(blob) {
      return URL.createObjectURL(blob);
    }

    static revokeObjectUrl(url) {
      URL.revokeObjectURL(url);
    }

    static triggerDownload(blob, filename) {
      const url = this.createObjectUrl(blob);
      const link = document.createElement('a');
      link.href = url;
      link.download = filename;
      link.style.display = 'none';
      document.body.appendChild(link);
      link.click();
      document.body.removeChild(link);
      this.revokeObjectUrl(url);
    }

    static openInNewTab(blob) {
      const url = this.createObjectUrl(blob);
      window.open(url);
      return url;
    }
  }

  // Add to window as a module
  window.FileDownloaderModule = FileDownloader;

  // Dispatch an event to notify other scripts that the module is loaded
  const event = new CustomEvent('FileDownloaderModuleLoaded');
  document.dispatchEvent(event);
  console.log('FileDownloader module loaded');
})();