angular.module('cssjidi')
.service('pagination',[function(){
  var _pageCount = 20,
      _currentPage = 0,
      _totalRecords = 0,
      _currentGroup = 1,
      _groupCount = 5;
  this.pageSize = function(){
    return parseInt(Math.ceil(_totalRecords/_pageCount));
  };
  this.setPageCount = function(count){
    _pageCount = parseInt(count);
  };
  this.setGrountCount = function(count){
    _groupCount = parseInt(count);
  };
  this.setRecords = function(count){
    _totalRecords = parseInt(count);
  };
  this.groupSize = function(){
    return Math.ceil(this.pageSize() / _groupCount);
  };
  this.isFirstPage = function(){
    return _currentPage === 1;
  };
  this.isLastPage = function(){
    return _currentPage === parseInt(this.getPageSize());
  };
  this.isFirstGroup = function(){
    return _currentGroup === 1;
  };
  this.isLastGroup = function(){
    return _currentGroup === this.groupSize();
  };
  this.setPage = function(number){
    _currentPage = parseInt(number);
    _currentGroup = Math.ceil(_currentPage / _groupCount);
  };
  this.prvePage = function(){
    if(this.isFirstPage()) return;
    _currentPage = 1;
    this.setPage(1);
  };
  this.nextPage = function(){
    if(this.isLastPage) return;
    _currentPage = this.pageSize();
  };
  this.pagesList = function(){
    var pages = [] ,
        startPage = (_currentGroup-1)*_groupCount,
        endPage = Math.min(_currentPage,this.pageSize());
    for(var number=startPage;number<endPage;number++){
      var listArray = {
        text:number,
        page:number,
        limit:_pageCount
      };
      pages.push(listArray);
    }
    if(startPage > 1){
      var leftList = {
        text: '...',
        number: _currentGroup*_groupCount+1,
        limin:_pageCount
      };
      pages.push(leftList);
    }
    if(endPage < this.pageSize()){
      var rightList = {
        text: '...',
        number: _currentGroup*(_groupCount-1),
        limin:_pageCount
      };
      pages.unshift(rightList);
    }
  };
}])
.directive('paging',[function(){
  return{
    restrict: 'EA',
    replace: true,
    template: '<div class="pagination"></div>',
    scope: {
      pager: 'config=?'
    },
    link: function($scope,$element,$attrs){
      
    }
  };
}])
.controller('demoCtrl',['$scope','pagination',function($scope,pagination){
  $scope.pager = {};
  pagination.setRecords = 421;  
}]);