void TDB2::update (
Task& task,
const bool add_to_backlog,
const bool addition /* = false */)
{
// Validate to add metadata.
task.validate (false);
// If the task already exists, it is a modification, else addition.
Task original;
if (not addition && get (task.get ("uuid"), original))
{
// Update only if the tasks differ
if (task == original)
return;
if (add_to_backlog)
{
// All locally modified tasks are timestamped, implicitly overwriting any
// changes the user or hooks tried to apply to the "modified" attribute.
task.setAsNow ("modified");
}
// Update the task, wherever it is.
if (!pending.modify_task (task))
completed.modify_task (task);
// time <time>
// old <task>
// new <task>
// ---
undo.add_line ("time " + ISO8601d ().toEpochString () + "\n");
undo.add_line ("old " + original.composeF4 () + "\n");
undo.add_line ("new " + task.composeF4 () + "\n");
undo.add_line ("---\n");
}
else
{
// Add new task to either pending or completed.
std::string status = task.get ("status");
if (status == "completed" ||
status == "deleted")
completed.add_task (task);
else
pending.add_task (task);
// Add undo data lines:
// time <time>
// new <task>
// ---
undo.add_line ("time " + ISO8601d ().toEpochString () + "\n");
undo.add_line ("new " + task.composeF4 () + "\n");
undo.add_line ("---\n");
}
// Add task to backlog.
if (add_to_backlog)
backlog.add_line (task.composeJSON () + "\n");
}
void TDB2::revert_backlog (
std::vector <std::string>& b,
const std::string& uuid,
const std::string& current,
const std::string& prior)
{
std::string uuid_att = "\"uuid\":\"" + uuid + "\"";
bool found = false;
for (auto task = b.rbegin (); task != b.rend (); ++task)
{
if (task->find (uuid_att) != std::string::npos)
{
context.debug ("TDB::revert_backlog - task found in backlog.data");
found = true;
// If this is a new task (no prior), then just remove it from the backlog.
if (current != "" && prior == "")
{
// Yes, this is what is needed, when you want to erase using a reverse
// iterator.
b.erase ((++task).base ());
}
// If this is a modification of some kind, add the prior to the backlog.
else
{
Task t (prior);
b.push_back (t.composeJSON ());
}
break;
}
}
if (!found)
throw std::string (STRING_TDB2_UNDO_SYNCED);
}
