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129 lines
3.6 KiB
Perl
129 lines
3.6 KiB
Perl
# File: Weather.pm
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#
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# Purpose: Weather command. See Wttr.pm for a more featureful command.
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# SPDX-FileCopyrightText: 2021 Pragmatic Software <pragma78@gmail.com>
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# SPDX-License-Identifier: MIT
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package PBot::Plugin::Weather;
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use parent 'PBot::Plugin::Base';
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use PBot::Imports;
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use PBot::Core::Utils::LWPUserAgentCached;
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use XML::LibXML;
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sub initialize {
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my ($self, %conf) = @_;
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$self->{pbot}->{commands}->add(
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name => 'weather',
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help => 'Provides weather service via AccuWeather',
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subref => sub { $self->cmd_weather(@_) },
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);
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}
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sub unload {
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my $self = shift;
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$self->{pbot}->{commands}->remove('weather');
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}
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sub cmd_weather {
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my ($self, $context) = @_;
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my $usage = "Usage: weather (<location> | -u <user account>)";
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my $arguments = $context->{arguments};
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my %opts;
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my ($opt_args, $opt_error) = $self->{pbot}->{interpreter}->getopt(
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$arguments,
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\%opts,
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['bundling'],
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'u=s',
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'h',
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);
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return $usage if $opts{h};
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return "/say $opt_error -- $usage" if defined $opt_error;
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$arguments = "@$opt_args";
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my $user_override = $opts{u};
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if (defined $user_override) {
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my $userdata = $self->{pbot}->{users}->{storage}->get_data($user_override);
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return "No such user account $user_override." if not defined $userdata;
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return "User account does not have `location` set." if not exists $userdata->{location};
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$arguments = $userdata->{location};
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} else {
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if (not length $arguments) {
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$arguments = $self->{pbot}->{users}->get_user_metadata($context->{from}, $context->{hostmask}, 'location') // '';
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}
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}
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if (not length $arguments) { return $usage; }
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return $self->get_weather($arguments);
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}
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sub get_weather {
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my ($self, $location) = @_;
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my %cache_opt = (
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'namespace' => 'accuweather',
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'default_expires_in' => 3600
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);
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my $ua = PBot::Core::Utils::LWPUserAgentCached->new(\%cache_opt, timeout => 10);
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my $response = $ua->get("http://rss.accuweather.com/rss/liveweather_rss.asp?metric=0&locCode=$location");
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my $xml;
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if ($response->is_success) { $xml = $response->decoded_content; }
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else { return "Failed to fetch weather data: " . $response->status_line; }
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my $dom = XML::LibXML->load_xml(string => $xml);
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my $result = '';
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foreach my $channel ($dom->findnodes('//channel')) {
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my $title = $channel->findvalue('./title');
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my $description = $channel->findvalue('./description');
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if ($description eq 'Invalid Location') {
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return
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"Location $location not found. Use \"<city>, <country abbrev>\" (e.g. \"paris, fr\") or a US Zip Code or \"<city>, <state abbrev>, US\" (e.g., \"austin, tx, us\").";
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}
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$title =~ s/ - AccuW.*$//;
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$result .= "Weather for $title: ";
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}
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foreach my $item ($dom->findnodes('//item')) {
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my $title = $item->findvalue('./title');
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my $description = $item->findvalue('./description');
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if ($title =~ m/^Currently:/) {
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$title = $self->fix_temps($title);
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$result .= "$title; ";
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}
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if ($title =~ m/Forecast$/) {
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$description =~ s/ <img.*$//;
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$description = $self->fix_temps($description);
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$result .= "Forecast: $description";
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last;
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}
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}
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return $result;
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}
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sub fix_temps {
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my ($self, $text) = @_;
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$text =~ s|(-?\d+)\s*F|my $f = $1; my $c = ($f - 32 ) * 5 / 9; $c = sprintf("%.1d", $c); "${c}C/${f}F"|eg;
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return $text;
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}
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1;
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