/**

 *
 * @璋冪敤鏂规硶
 * $(selector).pagination(option, callback);
 * -姝ゅcallback鏄垵濮嬪寲璋冪敤锛宱ption閲岀殑callback鏄偣鍑婚〉鐮佸悗璋冪敤
 *
 * -- example --
 * $(selector).pagination({
 *     ... // 閰嶇疆鍙傛暟
 *     callback: function(api) {
 *         console.log('鐐瑰嚮椤电爜璋冪敤璇ュ洖璋?); //鍒囨崲椤电爜鏃舵墽琛屼竴娆″洖璋
 *     }
 * }, function(){
 *     console.log('鍒濆鍖?); //鎻掍欢鍒濆鍖栨椂璋冪敤璇ユ柟娉曪紝姣斿璇锋眰绗竴娆℃帴鍙ｆ潵鍒濆鍖栧垎椤甸厤缃
 * });
 */

(function (factory) {
  if (typeof define === 'function' && (define.amd || define.cmd) && !jQuery) {
    // AMD鎴朇MD
    define(['jquery'], factory);
  } else if (typeof module === 'object' && module.exports) {
    // Node/CommonJS
    module.exports = function (root, jQuery) {
      if (jQuery === undefined) {
        if (typeof window !== 'undefined') {
          jQuery = require('jquery');
        } else {
          jQuery = require('jquery')(root);
        }
      }
      factory(jQuery);
      return jQuery;
    };
  } else {
    //Browser globals
    factory(jQuery);
  }
}(function ($) {
  //閰嶇疆鍙傛暟
  var defaults = {
    totalData: 0, //鏁版嵁鎬绘潯鏁
    showData: 0, //姣忛〉鏄剧ず鐨勬潯鏁
    pageCount: 9, //鎬婚〉鏁?榛樿涓?
    current: 1, //褰撳墠绗嚑椤
    prevCls: 'prev', //涓婁竴椤礳lass
    nextCls: 'next', //涓嬩竴椤礳lass
    prevContent: '<', //涓婁竴椤靛唴瀹
    nextContent: '>', //涓嬩竴椤靛唴瀹
    activeCls: 'active', //褰撳墠椤甸€変腑鐘舵€
    coping: false, //棣栭〉鍜屽熬椤
    isHide: false, //褰撳墠椤垫暟涓?椤垫垨鑰?椤垫椂涓嶆樉绀哄垎椤
    homePage: '', //棣栭〉鑺傜偣鍐呭
    endPage: '', //灏鹃〉鑺傜偣鍐呭
    keepShowPN: false, //鏄惁涓€鐩存樉绀轰笂涓€椤典笅涓€椤
    mode: 'unfixed', //鍒嗛〉妯″紡锛寀nfixed锛氫笉鍥哄畾椤电爜鏁伴噺锛宖ixed锛氬浐瀹氶〉鐮佹暟閲
    count: 4, //mode涓簎nfixed鏃舵樉绀哄綋鍓嶉€変腑椤靛墠鍚庨〉鏁帮紝mode涓篺ixed鏄剧ず椤电爜鎬绘暟
    jump: false, //璺宠浆鍒版寚瀹氶〉鏁
    jumpIptCls: 'jump-ipt', //鏂囨湰妗嗗唴瀹
    jumpBtnCls: 'jump-btn', //璺宠浆鎸夐挳
    jumpBtn: '璺宠浆', //璺宠浆鎸夐挳鏂囨湰
    callback: function () {} //鍥炶皟
  };

  var Pagination = function (element, options) {
    //鍏ㄥ眬鍙橀噺
    var opts = options, //閰嶇疆
      current, //褰撳墠椤
      $document = $(document),
      $obj = $(element); //瀹瑰櫒

    /**
     * 璁剧疆鎬婚〉鏁
     * @param {int} page 椤电爜
     * @return opts.pageCount 鎬婚〉鏁伴厤缃
     */
    this.setPageCount = function (page) {
      return opts.pageCount = page;
    };

    /**
     * 鑾峰彇鎬婚〉鏁
     * 濡傛灉閰嶇疆浜嗘€绘潯鏁板拰姣忛〉鏄剧ず鏉℃暟锛屽皢浼氳嚜鍔ㄨ绠楁€婚〉鏁板苟鐣ヨ繃鎬婚〉鏁伴厤缃紝鍙嶄箣
     * @return {int} 鎬婚〉鏁
     */
    this.getPageCount = function () {
      return opts.totalData && opts.showData ? Math.ceil(parseInt(opts.totalData) / opts.showData) : opts.pageCount;
    };

    /**
     * 鑾峰彇褰撳墠椤
     * @return {int} 褰撳墠椤电爜
     */
    this.getCurrent = function () {
      return current;
    };

    /**
     * 濉厖鏁版嵁
     * @param {int} 椤电爜
     */
    this.filling = function (index) {
      var html = '';
      current = parseInt(index) || parseInt(opts.current); //褰撳墠椤电爜
      var pageCount = this.getPageCount(); //鑾峰彇鐨勬€婚〉鏁
      switch (opts.mode) { //閰嶇疆妯″紡
        case 'fixed': //鍥哄畾鎸夐挳妯″紡
          html += '<a href="javascript:;" class="' + opts.prevCls + '">' + opts.prevContent + '</a>';
          if (opts.coping) {
            var home = opts.coping && opts.homePage ? opts.homePage : '1';
            html += '<a href="javascript:;" data-page="1">' + home + '</a>';
          }
          var start = current > opts.count - 1 ? current + opts.count - 1 > pageCount ? current - (opts.count - (pageCount - current)) : current - 2 : 1;
          var end = current + opts.count - 1 > pageCount ? pageCount : start + opts.count;
          for (; start <= end; start++) {
            if (start != current) {
              html += '<a href="javascript:;" data-page="' + start + '">' + start + '</a>';
            } else {
              html += '<span class="' + opts.activeCls + '">' + start + '</span>';
            }
          }
          if (opts.coping) {
            var _end = opts.coping && opts.endPage ? opts.endPage : pageCount;
            html += '<a href="javascript:;" data-page="' + pageCount + '">' + _end + '</a>';
          }
          html += '<a href="javascript:;" class="' + opts.nextCls + '">' + opts.nextContent + '</a>';
          break;
        case 'unfixed': //涓嶅浐瀹氭寜閽ā寮
          if (opts.keepShowPN || current > 1) { //涓婁竴椤
            html += '<a href="javascript:;" class="' + opts.prevCls + '">' + opts.prevContent + '</a>';
          } else {
            if (opts.keepShowPN == false) {
              $obj.find('.' + opts.prevCls) && $obj.find('.' + opts.prevCls).remove();
            }
          }
          if (current >= opts.count + 2 && current != 1 && pageCount != opts.count) {
            var home = opts.coping && opts.homePage ? opts.homePage : '1';
            html += opts.coping ? '<a href="javascript:;" data-page="1">' + home + '</a><span>...</span>' : '';
          }
          var start = (current - opts.count) <= 1 ? 1 : (current - opts.count);
          var end = (current + opts.count) >= pageCount ? pageCount : (current + opts.count);
          for (; start <= end; start++) {
            if (start <= pageCount && start >= 1) {
              if (start != current) {
                html += '<a href="javascript:;" data-page="' + start + '">' + start + '</a>';
              } else {
                html += '<span class="' + opts.activeCls + '">' + start + '</span>';
              }
            }
          }
          if (current + opts.count < pageCount && current >= 1 && pageCount > opts.count) {
            var end = opts.coping && opts.endPage ? opts.endPage : pageCount;
            html += opts.coping ? '<span>...</span><a href="javascript:;" data-page="' + pageCount + '">' + end + '</a>' : '';
          }
          if (opts.keepShowPN || current < pageCount) { //涓嬩竴椤
            html += '<a href="javascript:;" class="' + opts.nextCls + '">' + opts.nextContent + '</a>';
          } else {
            if (opts.keepShowPN == false) {
              $obj.find('.' + opts.nextCls) && $obj.find('.' + opts.nextCls).remove();
            }
          }
          break;
        case 'easy': //绠€鍗曟ā寮
          break;
        default:
      }
      html += opts.jump ? '<input type="text" class="' + opts.jumpIptCls + '"><a href="javascript:;" class="' + opts.jumpBtnCls + '">' + opts.jumpBtn + '</a>' : '';
      $obj.empty().html(html);
    };

    //缁戝畾浜嬩欢
    this.eventBind = function () {
      var that = this;
      var pageCount = that.getPageCount(); //鎬婚〉鏁
      var index = 1;
      $obj.off().on('click', 'a', function () {
        if ($(this).hasClass(opts.nextCls)) {
          if ($obj.find('.' + opts.activeCls).text() >= pageCount) {
            $(this).addClass('disabled');
            return false;
          } else {
            index = parseInt($obj.find('.' + opts.activeCls).text()) + 1;
          }
        } else if ($(this).hasClass(opts.prevCls)) {
          if ($obj.find('.' + opts.activeCls).text() <= 1) {
            $(this).addClass('disabled');
            return false;
          } else {
            index = parseInt($obj.find('.' + opts.activeCls).text()) - 1;
          }
        } else if ($(this).hasClass(opts.jumpBtnCls)) {
          if ($obj.find('.' + opts.jumpIptCls).val() !== '') {
            index = parseInt($obj.find('.' + opts.jumpIptCls).val());
          } else {
            return;
          }
        } else {
          index = parseInt($(this).data('page'));
        }
        that.filling(index);
        typeof opts.callback === 'function' && opts.callback(that);
      });
      //杈撳叆璺宠浆鐨勯〉鐮
      $obj.on('input propertychange', '.' + opts.jumpIptCls, function () {
        var $this = $(this);
        var val = $this.val();
        var reg = /[^\d]/g;
        if (reg.test(val)) { $this.val(val.replace(reg, '')); }
        (parseInt(val) > pageCount) && $this.val(pageCount);
        if (parseInt(val) === 0) { $this.val(1); } //鏈€灏忓€间负1
      });
      //鍥炶溅璺宠浆鎸囧畾椤电爜
      $document.keydown(function (e) {
        if (e.keyCode == 13 && $obj.find('.' + opts.jumpIptCls).val()) {
          var index = parseInt($obj.find('.' + opts.jumpIptCls).val());
          that.filling(index);
          typeof opts.callback === 'function' && opts.callback(that);
        }
      });
    };

    //鍒濆鍖
    this.init = function () {
      this.filling(opts.current);
      this.eventBind();
      if (opts.isHide && this.getPageCount() == '1' || this.getPageCount() == '0') {
        $obj.hide();
      } else {
        $obj.show();
      }
    };
    this.init();
  };

  $.fn.pagination = function (parameter, callback) {
    if (typeof parameter == 'function') { //閲嶈浇
      callback = parameter;
      parameter = {};
    } else {
      parameter = parameter || {};
      callback = callback || function () {};
    }
    var options = $.extend({}, defaults, parameter);
    return this.each(function () {
      var pagination = new Pagination(this, options);
      callback(pagination);
    });
  };
}));