private String read(MemoriCommand command) {
MemoriEvent displayText;
if (memoriCalendar.isEmpty()) {
return MESSAGE_EMPTYFILE;
} else {
int index = command.getIndex();
if (memoriCalendar.size() < index) {
return LINE_INDEX_DOES_NOT_EXISTS;
} else {
displayText = memoriCalendar.get(index - 1);
return displayText.read();
}
}
}
private String delete(MemoriCommand command, GoogleSync googleSync) {
MemoriEvent event;
if (memoriCalendar.isEmpty()) {
return MESSAGE_EMPTYFILE;
} else {
int index = command.getIndex();
// to implement getIndex in MemoriCommand that returns a String
if (memoriCalendar.size() < index) {
return LINE_INDEX_DOES_NOT_EXISTS;
} else {
event = memoriCalendar.get(index - 1);
memoriCalendar.remove(index - 1);
googleSync.executeCommand(event, command);
return String.format(MESSAGE_DELETE);
}
}
}
private String update(MemoriCommand command, GoogleSync googleSync) {
MemoriEvent originalEvent;
if (memoriCalendar.isEmpty()) {
return MESSAGE_EMPTYFILE;
} else {
int index = command.getIndex();
if (memoriCalendar.size() < index) {
return LINE_INDEX_DOES_NOT_EXISTS;
} else {
originalEvent = memoriCalendar.get(index - 1);
originalEvent.update(
command.getName(),
command.getStart(),
command.getEnd(),
command.getDescription(),
command.getLocation());
googleSync.executeCommand(originalEvent, command);
return String.format(MESSAGE_UPDATE, index);
}
}
}
