q.js

angular.module('LoanManager',function(LoansFactory){

  function updateLoansData(response){
    var allLoans = response.data.data;
    return $q.all(allLoans.map(updateLoanData));
  }
  
  function updateLoanData(loan){
    return $q.all({
      need_vote: getPendingVotes(loan),
      has_comment: getPendingComments(loan)
    })
    .then(function(updatedData){
      angular.extend(loan,updatedData);
      return loan;
    })
  }
  
  function getPendingVotes(loan){
    return LoansFactory.getPendingVotes(loan.id)
    .then(function(response){
      return (response.data.data.length === 0);
    });
  }
  
  function getPendingComments(loan){
    return LoansFactory.getPendingComments(loan.id)
      .then(function(response){
        return (response.data.data.length === 0);
      });
  }

//PUBLIC API
return {
  getLoansWithExtraData: function(){
    return LoansFactory.getLoans().then(updateLoansData);
  }
}

});