Transaction Sets

gistfile1.js

// REQUEST
// transactionSets POST
// transactionSets/23 PUT

{
  transactionIds: [315, 311]
}

// RESPONSE

{
  currentTransactionSet: {
    mergeId: 23,
    primaryTransactionId: 315,
    transactionIds: [315, 311, 300]
  },
  updatedtedTransactionSets: [{
    mergeId: 13,
    primaryTransactionId: 89,
    transactionIds: [89, 91]
  }],
  deletedTransactionsSetMergeIds: [47]
}

// TRANSACTIONS & MERGE SETS API

var cache = {
  transactions: [],
  mergeSets: []
}

function fetchMergeSets(){
  var defer = $.Deferred();
  $.ajax({
    url: "transactions",
    parse: function(res){
      cache.transactions = res.transactions;
      cache.mergeSets    = res.mergeSets;
      defer.resolve( createMergeSetCollection(res) );
    }
  });
  return defer;
}

function createMergeSetCollection(res){
  var unmerged = _.filter(res.transactions, function(transaction){
    return transaction.mergeId === undefined;
  });
  var mergeSets = res.mergeSets;
  _.each(unmerged, function(transaction){
    mergeSets.push({
      primaryTransactionId: transaction.id,
      transactionIds: [transaction.id]
    });
  });
  var mergeSetCollection = new MergeSetCollection();
  return mergeSetCollection.add(mergeSets);
}

function mergeSetUpdate(attrs) {
  var model = cache.mergeSets.get(attrs.id);
  if( attrs.transactionIds.length =< 1 ) {
    model.set({
      id: undefined,
      primaryTransactionId: undefined
    });
  }
  model.set({transactionIds: attrs.transactionIds});
}

function createTransactionCollection(ids){
  var transactions = _.filter(cache.transactions, function(transaction){
    return _.contains(ids, transaction.id);
  });
  var transactionCollection = new TransactionCollection();
  return transactionCollection.add(transactions);
}

Data.reply("mergeSets:fetch", function(){
  return fetchTransactions();
});

Data.comply("mergeSet:change", function(attrs){
  mergeSetUpdate(attrs);
}

Data.reply("transaction:collection:create", function(ids){
  return createTransactionCollection(ids);
});

// TRANSACTIONS COLLECTION

url: "transactions" // PUT, DELETE

model: TransactionModel

// MERGE SET COLLECTION

url: "mergeSet", // POST, PUT

model: MergeSetModel

// MERGE SET MODEL

defaults: {
  transactionIds: []
},

parse function(res) {
  if(res.affectedMergeSets){
    Data.command("mergeSet:primaryTransaction:change", res.otherModel);
  }
  return res.currentModel;
}

// CONTROLLER
Data.request("mergeSets:fetch").done(function(collection){
  mergeSetCollectionView = new MergeSetCollectionView({
    collection: collection
  });
});