paginationService

angular
  .module('app')
  .factory('paginationService', paginationService);

paginationService.$inject = ['lnCmsClientService', '$state'];

function paginationService(lnCmsClientService, $state){

  var current = 1;
  var total = 1;
  var callback = () => {};
  const endpoint = $state.current.data.endpoint;

  return {
    init: init,
    nextPage: nextPage,
    hasPages: hasPages
  };

  function init( data = {} ) {
    total = data.pages || 1;
    current = 1;
  }

  function nextPage(cb){
    if ( hasPages() ) {
      var params = angular.extend(
        {},
        $state.current.data.fixedParams,
        { paged: current + 1 }
      );
      callback = cb;
      lnCmsClientService
        .getView(endpoint, params)
        .then(response);
    }
  }

  function response(response) {
    current += 1;
    callback(response);
  }

  function hasPages(){
    return current < total;
  }
}