/**
* @ngdoc service
* @name ActionSheet
* @module ionic
* @description
* The ActionSheet is a modal menu with options to select based on an action.
*/

import {View, Injectable, NgFor, NgIf} from 'angular2/angular2';

import {Icon} from '../icon/icon';
import {Overlay} from '../overlay/overlay';
import {Animation} from '../../animations/animation';
import * as util from 'ionic/util';


/**
 * @name ActionSheet
 * @description
 * The Action Sheet is a slide-up pane that lets the user choose from a set of options. Dangerous options are made obvious.
 *
 * There are easy ways to cancel out of the action sheet, such as tapping the backdrop or even hitting escape on the keyboard for desktop testing.
 *
 * @usage
 * ```ts
 * openMenu() {
 *
 *   this.actionSheet.open({
 *     buttons: [
 *       { text: 'Share This' },
 *       { text: 'Move' }
 *     ],
 *     destructiveText: 'Delete',
 *     titleText: 'Modify your album',
 *     cancelText: 'Cancel',
 *     cancel: function() {
 *       console.log('Canceled');
 *     },
 *     destructiveButtonClicked: () => {
 *       console.log('Destructive clicked');
 *     },
 *     buttonClicked: function(index) {
 *       console.log('Button clicked', index);
 *       if(index == 1) { return false; }
 *       return true;
 *     }
 *
 *   }).then(actionSheetRef => {
 *     this.actionSheetRef = actionSheetRef;
 *   });
 *
 * }
 * ```
 */
@View({
  template:
    '<backdrop (click)="_cancel()" tappable></backdrop>' +
    '<action-sheet-wrapper>' +
      '<div class="action-sheet-container">' +
        '<div class="action-sheet-group action-sheet-options">' +
          '<div class="action-sheet-title" *ng-if="titleText">{{titleText}}</div>' +
          '<button (click)="_buttonClicked(index)" *ng-for="#b of buttons; #index = index" class="action-sheet-option">' +
            '<icon [name]="b.icon" *ng-if="b.icon"></icon> ' +
            '{{b.text}}' +
          '</button>' +
          '<button *ng-if="destructiveText" (click)="_destructive()" class="destructive action-sheet-destructive">' +
            '<icon [name]="destructiveIcon" *ng-if="destructiveIcon"></icon> ' +
            '{{destructiveText}}</button>' +
        '</div>' +
        '<div class="action-sheet-group action-sheet-cancel" *ng-if="cancelText">' +
          '<button (click)="_cancel()">' +
            '<icon [name]="cancelIcon"></icon> ' +
            '{{cancelText}}</button>' +
        '</div>' +
      '</div>' +
    '</action-sheet-wrapper>',
  directives: [NgFor, NgIf, Icon]
})
class ActionSheetDirective {

  _cancel() {
    this.cancel && this.cancel();
    return this.overlayRef.close();
  }

  _destructive() {
    let shouldClose = this.destructiveButtonClicked();
    if (shouldClose === true) {
      return this.overlayRef.close();
    }
  }

  _buttonClicked(index) {
    let shouldClose = this.buttonClicked(index);
    if (shouldClose === true) {
      return this.overlayRef.close();
    }
  }
}

@Injectable()
export class ActionSheet extends Overlay {
  /**
   * Create and open a new Action Sheet. This is the
   * public API, and most often you will only use ActionSheet.open()
   *
   * @param {Object} [opts={}]  TODO
   * @return {Promise} Promise that resolves when the action sheet is open.
   */
  open(opts={}) {
    let config = this.config;
    let defaults = {
      enterAnimation: config.setting('actionSheetEnter'),
      leaveAnimation: config.setting('actionSheetLeave'),
      cancelIcon: config.setting('actionSheetCancelIcon'),
      destructiveIcon: config.setting('actionSheetDestructiveIcon')
    };

    let context = util.extend(defaults, opts);

    return this.create(OVERLAY_TYPE, ActionSheetDirective, context, context);
  }

  /**
   * TODO
   * @returns {TODO} TODO
   */
  get() {
    return this.getByType(OVERLAY_TYPE);
  }

}

const OVERLAY_TYPE = 'action-sheet';


/**
 * Animations for action sheet
 */
class ActionSheetAnimation extends Animation {
  constructor(element) {
    super(element);
    this.easing('cubic-bezier(.36, .66, .04, 1)').duration(450);

    this.backdrop = new Animation(element.querySelector('backdrop'));
    this.wrapper = new Animation(element.querySelector('action-sheet-wrapper'));

    this.add(this.backdrop, this.wrapper);
  }
}

class ActionSheetSlideIn extends ActionSheetAnimation {
  constructor(element) {
    super(element);
    this.backdrop.fromTo('opacity', 0.01, 0.4);
    this.wrapper.fromTo('translateY', '100%', '0%');
  }
}
Animation.register('action-sheet-slide-in', ActionSheetSlideIn);

class ActionSheetSlideOut extends ActionSheetAnimation {
  constructor(element) {
    super(element);
    this.backdrop.fromTo('opacity', 0.4, 0.01);
    this.wrapper.fromTo('translateY', '0%', '100%');
  }
}
Animation.register('action-sheet-slide-out', ActionSheetSlideOut);


class ActionSheetMdSlideIn extends ActionSheetSlideIn {
  constructor(element) {
    super(element);
    this.backdrop.fromTo('opacity', 0.01, 0.26);
  }
}
Animation.register('action-sheet-md-slide-in', ActionSheetMdSlideIn);

class ActionSheetMdSlideOut extends ActionSheetSlideOut {
  constructor(element) {
    super(element);
    this.backdrop.fromTo('opacity', 0.26, 0.01);
  }
}
Animation.register('action-sheet-md-slide-out', ActionSheetMdSlideOut);