// PUT https://spreadsheets.google.com/feeds/list/{key}/{worksheetId}/{visibility}/{projection}/{rowId}
function request(data) {
  var rows = (data[1].feed.entry || []).map(function(row) {
    var ret = {id: row.id.$t.substring(row.id.$t.lastIndexOf('/') + 1)};
    ret.etag = row.gd$etag;
    for (var key in row) {
      if (key.indexOf('gsx$') === 0) ret[key.substring(4)] = row[key].$t
    }
    return ret
  })
    
  var issues = [];
  data[0].forEach(function(page) {issues = issues.concat(page)});
  issues = issues.filter(function(i) {return i})
                 .map(global.issueToRow)
      
  issues.forEach(function(i) {
    var row = rows.filter(function(r) {return parseInt(r.number) === i.number})[0]
    if (!row) return;
    row.isChanged = false;
    global.fields.forEach(function(field) {
      if (row[field] !== i[field]) row.isChanged = true;
      row[field] = i[field];
    })
  })
  
  rows = rows.filter(function(r) {return r.isChanged})
  
  return rows.map(function(row) {
    console.log('r.created', row.created);
    return {
      'GData-Version': '2.1',
      visibility: 'private',
      projection: 'full',
      key: constants.spreadsheetID,
      worksheetId: 'od6',
      alt: 'json',
      rowId: row.id,
      body: global.rowXML(row),
      'Content-Type': 'application/atom+xml',
    }
  })
}