gistfile1.txt

  validatePrintToPdfParams(key, data, object, page, margin) {

    let obj = {
      'orientation': function () {
        if (data && data !== 'landscape' && data !== 'portrait') {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It should be either "landscape" (or) "portrait"`);
        } else {
          object.orientation = data;
        }
      },

      'scale': function () {
        if (data >= 0.1 && data <= 2 && typeof data === 'number' && data) {
          object.scale = data;
        } else {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It scale should be in between > 0.1 and < 2`);
        }
      },

      'background': function () {
        if (data && data !== true && data !== false) {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It should be either "true" (or) "false"`);
        } else {
          object.background = data;
        }
      },

      'width': function () {
        if (data && typeof data === 'number' && data >= 0) {
          page.width = data;
          object.page = page;
        } else {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It width should be of type 'integer' and >= 0`);
        }
      },

      'height': function () {
        if (data && typeof data === 'number' && data >= 0) {
          page.height = data;
          object.page = page;
        } else {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It width should be of type 'integer' and >= 0`);
        }
      },

      'top': function () {
        if (data && typeof data === 'number' && data >= 0) {
          margin.top = data;
          object.margin = margin;
        } else {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It width should be of type 'integer' and >= 0`);
        }
      },

      'left': function () {
        if (data && typeof data === 'number' && data >= 0) {
          margin.left = data;
          object.margin = margin;
        } else {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It width should be of type 'integer' and >= 0`);
        }
      },

      'bottom': function () {
        if (data && typeof data === 'number' && data >= 0) {
          margin.bottom = data;
          object.margin = margin;
        } else {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It width should be of type 'integer' and >= 0`);
        }
      },

      'right': function () {
        if (data && typeof data === 'number' && data >= 0) {
          margin.right = data;
          object.margin = margin;
        } else {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It width should be of type 'integer' and >= 0`);
        }
      },

      'shrinkToFit': function () {
        if (data && data !== true && data !== false) {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It should be either "true" (or) "false"`);
        } else {
          object.shrinkToFit = data;
        }
      },

      'pageRanges': function () {
        if (data && data !== true && data !== false) {
          throw new error.InvalidArgumentError(
              `Invalid argument '${key}'. It should be either "true" (or) "false"`);
        } else {
          object.shrinkToFit = data;
        }
      },
    }

    obj[key]();
    return object;
  };

  printToPdf({orientation, scale, background, width, height, top, bottom, left, right, shrinkToFit, pageRanges}) {

    let keys = arguments[0];
    let page = {};
    let margin = {};
    let params = {};
    let res = {};

    let self = this;
    Object.keys(keys).forEach(function (key) {
      res = self.validatePrintToPdfParams(key, keys[key], params, page, margin);
    });

    return this.execute(
        new command.Command(command.Name.PRINT_PAGE).setParameters(res));
  }