import inherits from 'inherits-browser';

import KeyboardBindings from 'diagram-js/lib/features/keyboard/KeyboardBindings';

/**
 * @typedef {import('didi').Injector} Injector
 * @typedef {import('diagram-js/lib/features/editor-actions/EditorActions').default} EditorActions
 * @typedef {import('diagram-js/lib/features/keyboard/Keyboard').default} Keyboard
 */

/**
 * BPMN 2.0 specific keyboard bindings.
 *
 * @param {Injector} injector
 */
export default function BpmnKeyboardBindings(injector: any) {
  //@ts-ignore
  injector.invoke(KeyboardBindings, this);
}

inherits(BpmnKeyboardBindings, KeyboardBindings);

BpmnKeyboardBindings.$inject = ['injector'];

/**
 * Register available keyboard bindings.
 *
 * @param {Keyboard} keyboard
 * @param {EditorActions} editorActions
 */
BpmnKeyboardBindings.prototype.registerBindings = function (keyboard: any, editorActions: any) {
  // inherit default bindings
  KeyboardBindings.prototype.registerBindings.call(this, keyboard, editorActions);

  /**
   * Add keyboard binding if respective editor action
   * is registered.
   *
   * @param {string} action name
   * @param {Function} fn that implements the key binding
   */
  function addListener(action: string, fn: Function) {
    if (editorActions.isRegistered(action)) {
      keyboard.addListener(fn);
    }
  }

  addListener('find', function (context: any) {
    var event = context.keyEvent;

    if (keyboard.isKey(['f', 'F'], event) && keyboard.isCmd(event)) {
      editorActions.trigger('find');

      return true;
    }
  });

  // activate space tool
  // S
  addListener('spaceTool', function (context: any) {
    var event = context.keyEvent;

    if (keyboard.hasModifier(event)) {
      return;
    }

    if (keyboard.isKey(['s', 'S'], event)) {
      editorActions.trigger('spaceTool');

      return true;
    }
  });

  // activate lasso tool
  // L
  addListener('lassoTool', function (context: any) {
    var event = context.keyEvent;

    if (keyboard.hasModifier(event)) {
      return;
    }

    if (keyboard.isKey(['l', 'L'], event)) {
      editorActions.trigger('lassoTool');

      return true;
    }
  });

  // activate hand tool
  // H
  addListener('handTool', function (context: any) {
    var event = context.keyEvent;

    if (keyboard.hasModifier(event)) {
      return;
    }

    if (keyboard.isKey(['h', 'H'], event)) {
      editorActions.trigger('handTool');

      return true;
    }
  });

  // activate global connect tool
  // C
  addListener('globalConnectTool', function (context: any) {
    var event = context.keyEvent;

    if (keyboard.hasModifier(event)) {
      return;
    }

    if (keyboard.isKey(['c', 'C'], event)) {
      editorActions.trigger('globalConnectTool');

      return true;
    }
  });

  // activate direct editing
  // E
  addListener('directEditing', function (context: any) {
    var event = context.keyEvent;

    if (keyboard.hasModifier(event)) {
      return;
    }

    if (keyboard.isKey(['e', 'E'], event)) {
      editorActions.trigger('directEditing');

      return true;
    }
  });

  // activate replace element
  // R
  addListener('replaceElement', function (context: any) {
    var event = context.keyEvent;

    if (keyboard.hasModifier(event)) {
      return;
    }

    if (keyboard.isKey(['r', 'R'], event)) {
      editorActions.trigger('replaceElement', event);

      return true;
    }
  });
};