/**
 * Author         : CheneyLiu
 * Date           : date
 * isAuto:        true, 自动播放
 * transTime:     3000, 自动播放间隔
 * animateSpeed:  1000,  动画速度
 * sliderMode:    'slide', 类型//'slide | fade',
 * pointerControl: true, 指示器开关
 * pointerEvent:  'click', 指示器类型//'hover' | 'click',
 * arrowControl:  true, 左右控制
 */
;
(function($) {
  $.fn.Slider = function(options) {
    "use strict";

    var settings = $.extend({
      isAuto: true,
      transTime: 10000,
      animateSpeed: 1000,
      sliderMode: 'fade', //'slide | fade',
      pointerControl: false,
      pointerEvent: 'hover', //'hover' | 'click',
      arrowControl: true,
    }, options);
    var interval;
    var isAnimating = false;
    var $slider = $(this);
    var $sliderWrap = $slider.find('.slider-inner');
    var sliderCount = $sliderWrap.find('> .item').length;
    var sliderWidth = $slider.width();
    var currentIndex = 0;

    var sliderFun = {
      controlInit: function() {
        // pointerControl
        if (settings.pointerControl) {

          var html = '';
          html += '<ol class="slider-pointer">';
          for (var i = 0; i < sliderCount; i++) {
            if (i == 0) {
              html += '<li class="active"></li>'
            } else {
              html += '<li></li>'
            }
          }
          html += '</ol>'
          $slider.append(html);
          // 指示器居中
          var $pointer = $slider.find('.slider-pointer');
          $pointer.css({
            left: '80%',
            marginLeft: -$pointer.width() / 2
          });
        }
        // pointerControl
        if (settings.arrowControl) {
          var html = "";
          html += '<span class="slider-control prev">&lt;</span>';
          html += '<span class="slider-control next">&gt;</span>'
          $slider.append(html);
        }
        $slider.on('click', '.slider-control.prev', function(event) {
          sliderFun.toggleSlide('prev');
        });
        $slider.on('click', '.slider-control.next', function(event) {
          sliderFun.toggleSlide('next');
        });
      },
      // slider
      sliderInit: function() {
        sliderFun.controlInit();
        // 模式选择
        if (settings.sliderMode == 'slide') {
          // slide 模式
          $sliderWrap.width(sliderWidth * sliderCount);
          $sliderWrap.children().width(sliderWidth);
        } else {
          // mode 模式
          $sliderWrap.children().css({
            'position': 'absolute',
            'left': 0,
            'top': 0
          });
          $sliderWrap.children().first().siblings().hide();
        }
        // 控制事件
        if (settings.pointerEvent == 'hover') {
          $slider.find('.slider-pointer > li').mouseenter(function(event) {
            sliderFun.sliderPlay($(this).index());
          });
        } else {
          $slider.find('.slider-pointer > li').click(function(event) {
            sliderFun.sliderPlay($(this).index());
          });
        }
        // 自动播放
        sliderFun.autoPlay();
      },
      // slidePlay
      sliderPlay: function(index) {
        sliderFun.stop();
        isAnimating = true;
        $sliderWrap.children().first().stop(true, true);
        $sliderWrap.children().stop(true, true);
        $slider.find('.slider-pointer').children()
          .eq(index).addClass('active')
          .siblings().removeClass('active');
        if (settings.sliderMode == "slide") {
          // slide
          if (index > currentIndex) {
            $sliderWrap.animate({
              left: '-=' + Math.abs(index - currentIndex) * sliderWidth + 'px'
            }, settings.animateSpeed, function() {
              isAnimating = false;
              sliderFun.autoPlay();
            });
          } else if (index < currentIndex) {
            $sliderWrap.animate({
              left: '+=' + Math.abs(index - currentIndex) * sliderWidth + 'px'
            }, settings.animateSpeed, function() {
              isAnimating = false;
              sliderFun.autoPlay();
            });
          } else {
            return;
          }
        } else {
          // fade
          if ($sliderWrap.children(':visible').index() == index) return;
          $sliderWrap.children().fadeOut(settings.animateSpeed)
            .eq(index).fadeIn(settings.animateSpeed, function() {
              isAnimating = false;
              sliderFun.autoPlay();
            });
        }
        currentIndex = index;
      },
      // toggleSlide
      toggleSlide: function(arrow) {
        if (isAnimating) {
          return;
        }
        var index;
        if (arrow == 'prev') {
          index = (currentIndex == 0) ? sliderCount - 1 : currentIndex - 1;
          sliderFun.sliderPlay(index);
        } else if (arrow == 'next') {
          index = (currentIndex == sliderCount - 1) ? 0 : currentIndex + 1;
          sliderFun.sliderPlay(index);
        }
      },
      // autoPlay
      autoPlay: function() {
        if (settings.isAuto) {
          interval = setInterval(function() {
            var index = currentIndex;
            (currentIndex == sliderCount - 1) ? index = 0: index = currentIndex + 1;
            sliderFun.sliderPlay(index);
          }, settings.transTime);
        } else {
          return;
        }
      },
      //stop
      stop: function() {
        clearInterval(interval);
      },
    };
    sliderFun.sliderInit();
  }
})(jQuery);
jQuery(document).ready(function($) {
  $('#slider0').Slider();
  $('#slider1').Slider();
  $('#slider2').Slider();
});