Inventory Update WIP

gistfile1.txt

function inventory(warehouse, shipment) {
  // create a key list of items already in warehouse
  
  function makeInvList(list) {
    var IL = [];
    list.forEach(function(item, index) {
      IL.push(item[1]);
    });
    return IL;
  }
 
  var inventoryList = makeInvList(warehouse);
    
  // go through new items  
  shipment.forEach(function(item, index) {
    // check the shipment item against warehouse
    // if there is already inventory of that item...
    var warehouseRef = inventoryList.indexOf(item[1]);
    
    if (inventoryList.indexOf(item[1]) >= 0) {
      
      // update the count in warehouse.
      var shipNum = item[0];
      warehouse[warehouseRef][0] += shipNum;
      
    } else {
     
      // else we just push the new inventory item.
      warehouse.push(item);
    }
  });
  // now to alphabetize the warehouse.
  // create a new inventory list, again, and sort it.
  inventoryList = makeInvList(warehouse).sort();

  var finalCount = [];
  
  inventoryList.forEach(function(item, value) {
    // find the item in warehouse that matches
    warehouse.indexOf()
  });
  
    return finalCount;
}

// Example inventory lists
var curInv = [
    [21, 'Bowling Ball'],
    [2, 'Dirty Sock'],
    [1, 'Hair Pin'],
    [5, 'Microphone']
];

var newInv = [
    [2, 'Hair Pin'],
    [3, 'Half-Eaten Apple'],
    [67, 'Bowling Ball'],
    [7, 'Toothpaste']
];

inventory(curInv, newInv);