/* Copyright 2016 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/* globals chrome */

'use strict';

if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('CHROME')) {
  var defaultUrl; // eslint-disable-line no-var

  (function rewriteUrlClosure() {
    // Run this code outside DOMContentLoaded to make sure that the URL
    // is rewritten as soon as possible.
    let queryString = document.location.search.slice(1);
    let m = /(^|&)file=([^&]*)/.exec(queryString);
    defaultUrl = m ? decodeURIComponent(m[2]) : '';

    // Example: chrome-extension://.../http://example.com/file.pdf
    let humanReadableUrl = '/' + defaultUrl + location.hash;
    history.replaceState(history.state, '', humanReadableUrl);
    if (top === window) {
      chrome.runtime.sendMessage('showPageAction');
    }
  })();
}

let pdfjsWebApp, pdfjsWebAppOptions;
if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('PRODUCTION')) {
  pdfjsWebApp = require('./app.js');
  pdfjsWebAppOptions = require('./app_options.js');
}

if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
  require('./firefoxcom.js');
  require('./firefox_print_service.js');
}
if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('GENERIC')) {
  require('./genericcom.js');
}
if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('CHROME')) {
  require('./chromecom.js');
}
if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('CHROME || GENERIC')) {
  require('./pdf_print_service.js');
}

function getViewerConfiguration() {
  return {
    appContainer: document.body,
    mainContainer: document.getElementById('viewerContainer'),
    viewerContainer: document.getElementById('viewer'),
    eventBus: null, // Using global event bus with (optional) DOM events.
    toolbar: {
      container: document.getElementById('toolbarViewer'),
      numPages: document.getElementById('numPages'),
      pageNumber: document.getElementById('pageNumber'),
      scaleSelectContainer: document.getElementById('scaleSelectContainer'),
      scaleSelect: document.getElementById('scaleSelect'),
      customScaleOption: document.getElementById('customScaleOption'),
      previous: document.getElementById('previous'),
      next: document.getElementById('next'),
      zoomIn: document.getElementById('zoomIn'),
      zoomOut: document.getElementById('zoomOut'),
      viewFind: document.getElementById('viewFind'),
      openFile: document.getElementById('openFile'),
      print: document.getElementById('print'),
      presentationModeButton: document.getElementById('presentationMode'),
      download: document.getElementById('download'),
      viewBookmark: document.getElementById('viewBookmark'),
    },
    secondaryToolbar: {
      toolbar: document.getElementById('secondaryToolbar'),
      toggleButton: document.getElementById('secondaryToolbarToggle'),
      toolbarButtonContainer:
        document.getElementById('secondaryToolbarButtonContainer'),
      presentationModeButton:
        document.getElementById('secondaryPresentationMode'),
      openFileButton: document.getElementById('secondaryOpenFile'),
      printButton: document.getElementById('secondaryPrint'),
      downloadButton: document.getElementById('secondaryDownload'),
      viewBookmarkButton: document.getElementById('secondaryViewBookmark'),
      firstPageButton: document.getElementById('firstPage'),
      lastPageButton: document.getElementById('lastPage'),
      pageRotateCwButton: document.getElementById('pageRotateCw'),
      pageRotateCcwButton: document.getElementById('pageRotateCcw'),
      cursorSelectToolButton: document.getElementById('cursorSelectTool'),
      cursorHandToolButton: document.getElementById('cursorHandTool'),
      scrollVerticalButton: document.getElementById('scrollVertical'),
      scrollHorizontalButton: document.getElementById('scrollHorizontal'),
      scrollWrappedButton: document.getElementById('scrollWrapped'),
      spreadNoneButton: document.getElementById('spreadNone'),
      spreadOddButton: document.getElementById('spreadOdd'),
      spreadEvenButton: document.getElementById('spreadEven'),
      documentPropertiesButton: document.getElementById('documentProperties'),
    },
    fullscreen: {
      contextFirstPage: document.getElementById('contextFirstPage'),
      contextLastPage: document.getElementById('contextLastPage'),
      contextPageRotateCw: document.getElementById('contextPageRotateCw'),
      contextPageRotateCcw: document.getElementById('contextPageRotateCcw'),
    },
    sidebar: {
      // Divs (and sidebar button)
      outerContainer: document.getElementById('outerContainer'),
      viewerContainer: document.getElementById('viewerContainer'),
      toggleButton: document.getElementById('sidebarToggle'),
      // Buttons
      thumbnailButton: document.getElementById('viewThumbnail'),
      outlineButton: document.getElementById('viewOutline'),
      attachmentsButton: document.getElementById('viewAttachments'),
      // Views
      thumbnailView: document.getElementById('thumbnailView'),
      outlineView: document.getElementById('outlineView'),
      attachmentsView: document.getElementById('attachmentsView'),
    },
    sidebarResizer: {
      outerContainer: document.getElementById('outerContainer'),
      resizer: document.getElementById('sidebarResizer'),
    },
    findBar: {
      bar: document.getElementById('findbar'),
      toggleButton: document.getElementById('viewFind'),
      findField: document.getElementById('findInput'),
      highlightAllCheckbox: document.getElementById('findHighlightAll'),
      caseSensitiveCheckbox: document.getElementById('findMatchCase'),
      entireWordCheckbox: document.getElementById('findEntireWord'),
      findMsg: document.getElementById('findMsg'),
      findResultsCount: document.getElementById('findResultsCount'),
      findPreviousButton: document.getElementById('findPrevious'),
      findNextButton: document.getElementById('findNext'),
    },
    passwordOverlay: {
      overlayName: 'passwordOverlay',
      container: document.getElementById('passwordOverlay'),
      label: document.getElementById('passwordText'),
      input: document.getElementById('password'),
      submitButton: document.getElementById('passwordSubmit'),
      cancelButton: document.getElementById('passwordCancel'),
    },
    documentProperties: {
      overlayName: 'documentPropertiesOverlay',
      container: document.getElementById('documentPropertiesOverlay'),
      closeButton: document.getElementById('documentPropertiesClose'),
      fields: {
        'fileName': document.getElementById('fileNameField'),
        'fileSize': document.getElementById('fileSizeField'),
        'title': document.getElementById('titleField'),
        'author': document.getElementById('authorField'),
        'subject': document.getElementById('subjectField'),
        'keywords': document.getElementById('keywordsField'),
        'creationDate': document.getElementById('creationDateField'),
        'modificationDate': document.getElementById('modificationDateField'),
        'creator': document.getElementById('creatorField'),
        'producer': document.getElementById('producerField'),
        'version': document.getElementById('versionField'),
        'pageCount': document.getElementById('pageCountField'),
        'pageSize': document.getElementById('pageSizeField'),
        'linearized': document.getElementById('linearizedField'),
      },
    },
    errorWrapper: {
      container: document.getElementById('errorWrapper'),
      errorMessage: document.getElementById('errorMessage'),
      closeButton: document.getElementById('errorClose'),
      errorMoreInfo: document.getElementById('errorMoreInfo'),
      moreInfoButton: document.getElementById('errorShowMore'),
      lessInfoButton: document.getElementById('errorShowLess'),
    },
    printContainer: document.getElementById('printContainer'),
    openFileInputName: 'fileInput',
    debuggerScriptPath: './debugger.js',
  };
}

function webViewerLoad() {
  let config = getViewerConfiguration();
  if (typeof PDFJSDev === 'undefined' || !PDFJSDev.test('PRODUCTION')) {
    Promise.all([
      SystemJS.import('pdfjs-web/app'),
      SystemJS.import('pdfjs-web/app_options'),
      SystemJS.import('pdfjs-web/genericcom'),
      SystemJS.import('pdfjs-web/pdf_print_service'),
    ]).then(function([app, appOptions, ...otherModules]) {
      window.PDFViewerApplication = app.PDFViewerApplication;
      window.PDFViewerApplicationOptions = appOptions.AppOptions;
      app.PDFViewerApplication.run(config);
    });
  } else {
    if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('CHROME')) {
      pdfjsWebAppOptions.AppOptions.set('defaultUrl', defaultUrl);
    }

    window.PDFViewerApplication = pdfjsWebApp.PDFViewerApplication;
    window.PDFViewerApplicationOptions = pdfjsWebAppOptions.AppOptions;

    if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('GENERIC')) {
      // Give custom implementations of the default viewer a simpler way to
      // set various `AppOptions`, by dispatching an event once all viewer
      // files are loaded but *before* the viewer initialization has run.
      const event = document.createEvent('CustomEvent');
      event.initCustomEvent('webviewerloaded', true, true, {});
      document.dispatchEvent(event);
    }

    pdfjsWebApp.PDFViewerApplication.run(config);
  }
}

if (document.readyState === 'interactive' ||
    document.readyState === 'complete') {
  webViewerLoad();
} else {
  document.addEventListener('DOMContentLoaded', webViewerLoad, true);
}