public ArrayList<String> getAllIdsForDownload() throws IOException, JSONException {
HashMap<String, String> serverIdsRevs = childService.getAllIdsAndRevs();
HashMap<String, String> repoIdsAndRevs = childRepository.getAllIdsAndRevs();
ArrayList<String> idsToDownload = new ArrayList<String>();
for (Map.Entry<String, String> serverIdRev : serverIdsRevs.entrySet()) {
if (!isServerIdExistingInRepository(repoIdsAndRevs, serverIdRev)
|| (repoIdsAndRevs.get(serverIdRev.getKey()) != null
&& isRevisionMismatch(repoIdsAndRevs, serverIdRev))) {
idsToDownload.add(serverIdRev.getKey());
}
}
return idsToDownload;
}
