const rawData = [
  "A10|Tomatoes|5|2027-01-01",        // no zone field
  "B21|Bananas|10|2027-01-01|fridge", // zone: "fridge"
  "C32|Eggs|3|2027-01-01|pantry",     // zone: "pantry"
];

function parseShipment(rawData) {
  const parsedData = [];
  for (const row of rawData) {
    const columns = row.split("|");
    
    let isSameSKU = false;
    for (const comparison of parsedData) {
      if (comparison.sku === columns[0]) {
        isSameSKU = true;
      }
    }

    if (isSameSKU) {
      continue;
    }

    const data = {
      sku: columns[0],
      name: columns[1],
      qty: parseInt(columns[2]),
      expires: columns[3],
      zone: "general"
    };
    
    if (columns.length === 5) {
      data.zone = columns[4];
    }

    parsedData.push(data);
  }
  return parsedData;
}

function planRestock(pantry, shipment) {
  let collection = [];

  for (const row of shipment) {
    if (row.qty <= 0) {
      const index = {
        type: "discard",
        item: row
      };
      collection.push(index);
      continue;
    }

    for (const shelf of pantry) {
      if (shelf.sku === row.sku) {
        const index = {
          type: "restock",
          item: row
        };
        collection.push(index);
        continue;
      }
    }

    const index = {
        type: "donate",
        item: row
      };
    collection.push(index);
  }

  return collection;
}

function groupByZone(actions) {
  const groups = {};
  for (const action of actions) {
    if (!groups.hasOwnProperty(action.item.zone)) {
      groups[action.item.zone] = [];
    }

    groups[action.item.zone].push(action.type);
  }

  return groups;
}

function clonePantry(pantry) {
  const pantryCopy = [];
  for (const shelf of pantry) {
    pantryCopy.push(new Object({...shelf}));
  }
  return pantryCopy;
}