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524 lines
14 KiB
Perl
524 lines
14 KiB
Perl
# File: RemindMe.pm
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#
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# Purpose: Users can use `remindme` to set up reminders. Reminders are
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# sent to the user (or channel, if -c and admin).
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package Plugins::RemindMe;
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use parent 'Plugins::Plugin';
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use PBot::Imports;
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use DBI;
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use Time::Duration qw/concise duration/;
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use Time::HiRes qw/time/;
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use Getopt::Long qw/GetOptionsFromArray/;
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sub initialize {
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my ($self, %conf) = @_;
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# register `remindme` bot command
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$self->{pbot}->{commands}->register(sub { $self->cmd_remindme(@_) }, 'remindme', 0);
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# set location of sqlite database
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$self->{filename} = $self->{pbot}->{registry}->get_value('general', 'data_dir') . '/reminders.sqlite3';
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# open the database
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$self->dbi_begin;
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# create tables, etc
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$self->create_database;
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# add saved reminders to event queue
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$self->enqueue_reminders;
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}
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sub unload {
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my ($self) = @_;
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# close database
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$self->dbi_end;
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# unregister `remindme` command
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$self->{pbot}->{commands}->unregister('remindme');
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# remove all reminder events from event queue
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$self->{pbot}->{event_queue}->dequeue_event('reminder .*');
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}
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# `remindme` bot command
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sub cmd_remindme {
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my ($self, $context) = @_;
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if (not $self->{dbh}) {
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return "Internal error.";
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}
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my $usage = "Usage: remindme [-c channel] [-r count] message -t time | remindme -l [nick] | remindme -d id";
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return $usage if not length $context->{arguments};
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my ($channel, $repeats, $text, $alarm, $list_reminders, $delete_id);
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my $getopt_error;
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local $SIG{__WARN__} = sub {
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$getopt_error = shift;
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chomp $getopt_error;
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};
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my @opt_args = $self->{pbot}->{interpreter}->split_line($context->{arguments}, strip_quotes => 1);
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Getopt::Long::Configure("bundling");
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GetOptionsFromArray(
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\@opt_args,
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'r:i' => \$repeats,
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't:s' => \$alarm,
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'c:s' => \$channel,
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'm:s' => \$text,
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'l:s' => \$list_reminders,
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'd:i' => \$delete_id
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);
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return "$getopt_error -- $usage" if defined $getopt_error;
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# option -l was provided; list reminders
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if (defined $list_reminders) {
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my $nick_override = $list_reminders if length $list_reminders;
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my $account;
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if ($nick_override) {
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my $hostmask;
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# look up account id and hostmask by nickname
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($account, $hostmask) = $self->{pbot}->{messagehistory}->{database}->find_message_account_by_nick($nick_override);
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if (not $account) {
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return "I don't know anybody named $nick_override.";
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}
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# capture nick portion of hostmask
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($nick_override) = $hostmask =~ m/^([^!]+)!/;
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} else {
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$account = $self->{pbot}->{messagehistory}->{database}->get_message_account($context->{nick}, $context->{user}, $context->{host});
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}
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$account = $self->{pbot}->{messagehistory}->{database}->get_ancestor_id($account);
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my $reminders = $self->get_reminders($account);
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my $count = 0;
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my $text = '';
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my $now = time;
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foreach my $reminder (@$reminders) {
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my $interval = concise duration $reminder->{alarm} - $now;
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$text .= "$reminder->{id}) in $interval";
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if ($reminder->{repeats}) {
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$text .= " ($reminder->{repeats} repeat" . ($reminder->{repeats} == 1 ? '' : 's') . " left)";
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}
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$text .= ": $reminder->{text}\n";
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$count++;
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}
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if (not $count) {
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if ($nick_override) {
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return "$nick_override has no reminders.";
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} else {
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return "You have no reminders.";
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}
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}
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# reuse $reminders variable to store this text
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$reminders = $count == 1 ? 'reminder' : 'reminders';
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return "$count $reminders: $text";
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}
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# option -d was provided; delete a reminder
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if ($delete_id) {
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my $admininfo = $self->{pbot}->{users}->loggedin_admin($channel ? $channel : $context->{from}, $context->{hostmask});
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# admins can delete any reminders
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if ($admininfo) {
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my $reminder = $self->get_reminder($delete_id);
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if (not $reminder) {
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return "Reminder $delete_id does not exist.";
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}
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if ($self->delete_reminder($delete_id)) {
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return "Reminder $delete_id ($reminder->{text}) deleted.";
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} else {
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return "Could not delete reminder $delete_id.";
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}
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}
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my $account = $self->{pbot}->{messagehistory}->{database}->get_message_account($context->{nick}, $context->{user}, $context->{host});
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$account = $self->{pbot}->{messagehistory}->{database}->get_ancestor_id($account);
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my $reminder = $self->get_reminder($delete_id);
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if (not $reminder) {
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return "Reminder $delete_id does not exist.";
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}
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if ($reminder->{account} != $account) {
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return "Reminder $delete_id does not belong to you.";
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}
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if ($self->delete_reminder($delete_id)) {
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return "Reminder $delete_id ($reminder->{text}) deleted.";
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} else {
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return "Could not delete reminder $delete_id.";
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}
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}
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# otherwise we're adding a reminder
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# if -t wasn't provided set text to ''
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$text //= '';
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# add to the reminder text anything left in the arguments
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if (@opt_args) {
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$text .= ' ' if length $text;
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$text .= join ' ', @opt_args;
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}
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return "Please use -t to specify a time for this reminder." if not $alarm;
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return "Please specify a reminder message." if not $text;
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my $admininfo = $self->{pbot}->{users}->loggedin_admin($channel ? $channel : $context->{from}, $context->{hostmask});
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# option -c was provided; ensure bot is in channel
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if ($channel and not $self->{pbot}->{channels}->is_active($channel)) {
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return "I'm not active in channel $channel.";
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}
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# parse "5 minutes", "next week", "3pm", etc into seconds
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my ($seconds, $error) = $self->{pbot}->{parsedate}->parsedate($alarm);
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return $error if $error;
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if ($seconds > 31536000 * 10) {
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return "Come on now, I'll be dead by then.";
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}
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# set repeats to 0 if option -r was not provided
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$repeats //= 0;
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# prevent non-admins from abusing repeat
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if (not defined $admininfo and $repeats > 20) {
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return "You may only set up to 20 repeats.";
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}
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if ($repeats < 0) {
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return "Repeats must be 0 or greater.";
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}
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# set timestamp for alarm
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$alarm = time + $seconds;
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my $account = $self->{pbot}->{messagehistory}->{database}->get_message_account($context->{nick}, $context->{user}, $context->{host});
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$account = $self->{pbot}->{messagehistory}->{database}->get_ancestor_id($account);
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# limit maximum reminders for non-admin users
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if (not defined $admininfo) {
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my $reminders = $self->get_reminders($account);
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if (@$reminders >= 50) {
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return "You may only set 50 reminders at a time. Use `remindme -d id` to remove a reminder.";
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}
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}
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my $id = $self->add_reminder(
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account => $account,
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channel => $channel,
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text => $text,
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alarm => $alarm,
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interval => $seconds,
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repeats => $repeats,
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hostmask => $context->{hostmask},
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);
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if ($id) {
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return "Reminder $id added.";
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} else {
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return "Failed to add reminder.";
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}
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}
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# invoked whenever a reminder event is ready
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sub do_reminder {
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my ($self, $id, $event) = @_;
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my $reminder = $self->get_reminder($id);
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if (not defined $reminder) {
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$self->{pbot}->{logger}->log("Queued reminder $id no longer exists.\n");
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# unset `repeating` flag for event item in PBot event queue
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$event->{repeating} = 0;
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# nothing to do
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return;
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}
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# ensures we get the current nick of the person being reminded
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my $hostmask = $self->{pbot}->{messagehistory}->{database}->find_most_recent_hostmask($reminder->{account});
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my ($nick) = $hostmask =~ /^([^!]+)!/;
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# try again in 30 seconds if the person isn't around yet
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if (not $self->{pbot}->{nicklist}->is_present_any_channel($nick)) {
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$event->{interval} = 30;
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$event->{repeating} = 1;
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return;
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}
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# send reminder text to person
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my $target = $reminder->{channel} // $nick;
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my $text = $reminder->{text};
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# if sending reminder to channel, highlight person being reminded
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if ($target =~ /^#/) {
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$text = "$nick: $text";
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}
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$self->{pbot}->{conn}->privmsg($target, $text);
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# log event
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$self->{pbot}->{logger}->log("Reminded $target about \"$text\"\n");
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# update repeats or delete reminder
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if ($reminder->{repeats} > 0) {
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# update reminder
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$reminder->{repeats}--;
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$reminder->{alarm} = time + $reminder->{interval};
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# update reminder in SQLite database
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my $data = { repeats => $reminder->{repeats}, alarm => $reminder->{alarm} };
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$self->update_reminder($reminder->{id}, $data);
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# update reminder event in PBot event queue
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$event->{interval} = $reminder->{interval};
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$event->{repeating} = 1;
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} else {
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# delete reminder
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$self->delete_reminder($reminder->{id});
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$event->{repeating} = 0;
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}
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}
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# load all reminders from SQLite database and add them
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# to PBot's event queue. typically used once at PBot start-up.
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sub enqueue_reminders {
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my ($self) = @_;
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return if not $self->{dbh};
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my $reminders = eval {
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my $sth = $self->{dbh}->prepare('SELECT * FROM Reminders');
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$sth->execute;
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return $sth->fetchall_arrayref({});
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};
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if ($@) {
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$self->{pbot}->{logger}->log("Enqueue reminders failed: $@");
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return;
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}
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foreach my $reminder (@$reminders) {
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my $timeout = $reminder->{alarm} - time;
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# delete this reminder if it's expired by 31 days
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if ($timeout <= 86400 * 31) {
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$self->{pbot}->{logger}->log("Deleting expired reminder: $reminder->{id}) $reminder->{text} set by $reminder->{created_by}\n");
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$self->delete_reminder($reminder->{id});
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next;
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}
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$self->{pbot}->{event_queue}->enqueue_event(
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sub {
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my ($event) = @_;
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$self->do_reminder($reminder->{id}, $event);
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},
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$timeout, "reminder $reminder->{id}", $reminder->{repeats}
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);
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}
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}
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sub create_database {
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my ($self) = @_;
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return if not $self->{dbh};
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eval {
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$self->{dbh}->do(<<SQL);
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CREATE TABLE IF NOT EXISTS Reminders (
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id INTEGER PRIMARY KEY,
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account TEXT,
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channel TEXT,
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text TEXT,
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alarm NUMERIC,
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repeats INTEGER,
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interval NUMERIC,
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created_on NUMERIC,
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created_by TEXT
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)
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SQL
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};
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$self->{pbot}->{logger}->log("RemindMe: create database failed: $@") if $@;
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}
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sub dbi_begin {
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my ($self) = @_;
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eval {
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$self->{dbh} = DBI->connect("dbi:SQLite:dbname=$self->{filename}", "", "", {RaiseError => 1, PrintError => 0, AutoInactiveDestroy => 1, sqlite_unicode => 1})
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or die $DBI::errstr;
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};
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if ($@) {
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$self->{pbot}->{logger}->log("Error opening RemindMe database: $@");
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delete $self->{dbh};
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return 0;
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} else {
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return 1;
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}
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}
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sub dbi_end {
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my ($self) = @_;
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return if not $self->{dbh};
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$self->{dbh}->disconnect;
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delete $self->{dbh};
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}
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# add a reminder
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sub add_reminder {
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my ($self, %args) = @_;
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my $id = eval {
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my $sth = $self->{dbh}->prepare('INSERT INTO Reminders (account, channel, text, alarm, interval, repeats, created_on, created_by) VALUES (?, ?, ?, ?, ?, ?, ?, ?)');
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$sth->execute(
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$args{account},
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$args{channel},
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$args{text},
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$args{alarm},
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$args{interval},
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$args{repeats},
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scalar time,
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$args{owner},
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);
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return $self->{dbh}->sqlite_last_insert_rowid;
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};
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if ($@) {
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$self->{pbot}->{logger}->log("Add reminder failed: $@");
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return 0;
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}
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$self->{pbot}->{event_queue}->enqueue_event(
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sub {
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my ($event) = @_;
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$self->do_reminder($id, $event);
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},
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$args{interval}, "reminder $id", $args{repeats}
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);
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return $id;
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}
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# delete a reminder by its id
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sub delete_reminder {
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my ($self, $id) = @_;
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return if not $self->{dbh};
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eval {
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my $sth = $self->{dbh}->prepare('DELETE FROM Reminders WHERE id = ?');
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$sth->execute($id);
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};
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if ($@) {
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$self->{pbot}->{logger}->log("Delete reminder $id failed: $@");
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return 0;
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}
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$self->{pbot}->{event_queue}->dequeue_event("reminder $id");
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return 1;
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}
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# update a reminder's metadata
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sub update_reminder {
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my ($self, $id, $data) = @_;
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eval {
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my $sql = 'UPDATE Reminders SET ';
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my @fields;
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foreach my $key (keys %$data) {
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push @fields, "$key = ?";
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}
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$sql .= join ', ', @fields;
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$sql .= ' WHERE id = ?';
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my $sth = $self->{dbh}->prepare($sql);
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my $param = 1;
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foreach my $key (keys %$data) {
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$sth->bind_param($param++, $data->{$key});
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}
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$sth->bind_param($param++, $id);
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$sth->execute;
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};
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$self->{pbot}->{logger}->log($@) if $@;
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}
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# get a single reminder by its id
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sub get_reminder {
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my ($self, $id) = @_;
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my $reminder = eval {
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my $sth = $self->{dbh}->prepare('SELECT * FROM Reminders WHERE id = ?');
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$sth->execute($id);
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return $sth->fetchrow_hashref();
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};
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if ($@) {
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$self->{pbot}->{logger}->log("Get reminder failed: $@");
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return undef;
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}
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return $reminder;
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}
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# get all reminders belonging to a user
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sub get_reminders {
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my ($self, $account) = @_;
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my $reminders = eval {
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my $sth = $self->{dbh}->prepare('SELECT * FROM Reminders WHERE account = ? ORDER BY id');
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$sth->execute($account);
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return $sth->fetchall_arrayref({});
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};
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if ($@) {
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$self->{pbot}->{logger}->log("Get reminders failed: $@");
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return [];
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}
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return $reminders;
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}
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1;
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