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pbot/lib/PBot/Plugin/Wttr.pm
2022-07-03 07:22:33 -07:00

338 lines
12 KiB
Perl

# File: Wttr.pm
#
# Purpose: Weather command using Wttr.in.
# SPDX-FileCopyrightText: 2021 Pragmatic Software <pragma78@gmail.com>
# SPDX-License-Identifier: MIT
package PBot::Plugin::Wttr;
use parent 'PBot::Plugin::Base';
use PBot::Imports;
use PBot::Core::Utils::LWPUserAgentCached;
use JSON;
use URI::Escape qw/uri_escape_utf8/;
sub initialize {
my ($self, %conf) = @_;
$self->{pbot}->{commands}->add(
name => 'wttr',
help => 'Provides weather information via wttr.in',
subref => sub { $self->cmd_wttr(@_) },
);
}
sub unload {
my $self = shift;
$self->{pbot}->{commands}->remove('wttr');
}
sub cmd_wttr {
my ($self, $context) = @_;
my $arguments = $context->{arguments};
my @wttr_options = (
'default',
'all',
'conditions',
'forecast',
'feelslike',
'uvindex',
'visibility',
'dewpoint',
'heatindex',
'cloudcover',
'wind',
'sun',
'sunhours',
'moon',
'chances',
'snowfall',
'location',
'qlocation',
'time',
'population',
);
my $usage = "Usage: wttr (<location> | -u <user account>) [" . join(' ', map { "-$_" } @wttr_options) . "]; to have me remember your location, use `my location <location>`.";
my %options;
my ($opt_args, $opt_error) = $self->{pbot}->{interpreter}->getopt(
$arguments,
\%options,
['bundling_override', 'ignorecase_always'],
'u=s',
'h',
@wttr_options,
);
return "/say $opt_error -- $usage" if defined $opt_error;
return $usage if exists $options{h};
$arguments = "@$opt_args";
if (defined $options{u}) {
my $username = delete $options{u};
my $userdata = $self->{pbot}->{users}->{storage}->get_data($username);
return "No such user account $username." if not defined $userdata;
return "User account does not have `location` set." if not exists $userdata->{location};
$arguments = $userdata->{location};
} else {
if (not length $arguments) {
$arguments = $self->{pbot}->{users}->get_user_metadata($context->{from}, $context->{hostmask}, 'location') // '';
}
}
if (not length $arguments) { return $usage; }
$options{default} = 1 if not keys %options;
if (defined $options{all}) {
%options = ();
map { my $opt = $_; $opt =~ s/\|.*$//; $options{$opt} = 1 } @wttr_options;
delete $options{all};
delete $options{default};
}
my @opts = keys %options;
return $self->get_wttr($arguments, \@opts, \@wttr_options);
}
sub get_wttr {
my ($self, $location, $options, $order) = @_;
my %cache_opt = (
'namespace' => 'wttr',
'default_expires_in' => 3600
);
my $location_uri = uri_escape_utf8 $location;
my $ua = PBot::Core::Utils::LWPUserAgentCached->new(\%cache_opt, timeout => 30);
my $response = $ua->get("http://wttr.in/$location_uri?format=j1&m");
my $json;
if ($response->is_success) {
$json = $response->decoded_content;
} else {
return "Failed to fetch weather data: " . $response->status_line;
}
my $wttr = eval { decode_json $json };
if ($@) {
# error decoding json so it must not be json -- return as-is
$@ = undef;
my $error = $json;
if ($error =~ /^Unknown location/) {
$error = "Unknown location: $location";
}
return $error;
}
# title-case location
$location = ucfirst lc $location;
$location =~ s/( |\.)(\w)/$1 . uc $2/ge;
$location =~ s/United States of America/USA/;
my $result = "$location: ";
my $c = $wttr->{'current_condition'}->[0];
my $w = $wttr->{'weather'}->[0];
my $h = $w->{'hourly'}->[0];
my ($obsdate, $obstime) = split / /, $c->{'localObsDateTime'}, 2;
my ($obshour, $obsminute) = split /:/, $obstime;
if ($obsminute =~ s/ PM$//) {
$obshour += 12;
} else {
$obsminute =~ s/ AM$//;
}
if (@$options == 1 and $options->[0] eq 'default') {
push @$options, ('chances', 'time');
}
foreach my $option (@$order) {
next if not grep { $_ eq $option } @$options;
given ($option) {
when ('default') {
$result .= "Currently: $c->{'weatherDesc'}->[0]->{'value'}: $c->{'temp_C'}C/$c->{'temp_F'}F";
if ($c->{'FeelsLikeC'} != $c->{'temp_C'}) {
$result .= " (Feels like $c->{'FeelsLikeC'}C/$c->{'FeelsLikeF'}F); ";
} else {
$result .= '; ';
}
$result .= "Forecast: High: $w->{maxtempC}C/$w->{maxtempF}F, Low: $w->{mintempC}C/$w->{mintempF}F; ";
my $conditions = "Condition changes: ";
my $last_condition = $c->{'weatherDesc'}->[0]->{'value'};
my $sep = '';
foreach my $hour (@{$w->{'hourly'}}) {
my $condition = $hour->{'weatherDesc'}->[0]->{'value'};
my $temp = "$hour->{FeelsLikeC}C/$hour->{FeelsLikeF}F";
my $time = sprintf "%04d", $hour->{'time'};
$time =~ s/(\d{2})$/:$1/;
if ($condition ne $last_condition) {
my ($hour, $minute) = split /:/, $time;
if (($hour > $obshour) or ($hour == $obshour and $minute >= $obsminute)) {
$conditions .= "$sep$time: $condition ($temp)";
$sep = ' -> ';
$last_condition = $condition;
}
}
}
$result .= "$conditions; " if length $sep;
$result .= "Cloud cover: $c->{'cloudcover'}%; Visibility: $c->{'visibility'}km; ";
$result .= "Wind: $c->{'windspeedKmph'}kph/$c->{'windspeedMiles'}mph $c->{'winddirDegree'}°/$c->{'winddir16Point'}; ";
$result .= "Humidity: $c->{'humidity'}%; Precip: $c->{'precipMM'}mm; Pressure: $c->{'pressure'}hPa; UV Index: $c->{'uvIndex'}";
$result .= ";\n";
}
when ('conditions') {
$result .= "Current conditions: $c->{'weatherDesc'}->[0]->{'value'}: $c->{'temp_C'}C/$c->{'temp_F'}F";
if ($c->{'FeelsLikeC'} != $c->{'temp_C'}) {
$result .= " (Feels like $c->{'FeelsLikeC'}C/$c->{'FeelsLikeF'}F); ";
} else {
$result .= '; ';
}
$result .= "Cloud cover: $c->{'cloudcover'}%; Visibility: $c->{'visibility'}km; ";
$result .= "Wind: $c->{'windspeedKmph'}kph/$c->{'windspeedMiles'}mph $c->{'winddirDegree'}°/$c->{'winddir16Point'}; ";
$result .= "Humidity: $c->{'humidity'}%; Precip: $c->{'precipMM'}mm; Pressure: $c->{'pressure'}hPa; UV Index: $c->{'uvIndex'};\n";
}
when ('forecast') {
$result .= "Hourly forecast: ";
my ($last_temp, $last_condition, $sep) = ('', '', '');
foreach my $hour (@{$wttr->{'weather'}->[0]->{'hourly'}}) {
my $temp = "$hour->{FeelsLikeC}C/$hour->{FeelsLikeF}F";
my $condition = $hour->{'weatherDesc'}->[0]->{'value'};
my $text = '';
if ($temp ne $last_temp) {
$text .= $temp;
$last_temp = $temp;
}
if ($condition ne $last_condition) {
$text .= ' ' if length $text;
$text .= "($condition)";
$last_condition = $condition;
}
if (length $text) {
my $time = sprintf '%04d', $hour->{'time'};
$time =~ s/(\d{2})$/:$1/;
my ($hour, $minute) = split /:/, $time;
if (($hour > $obshour) or ($hour == $obshour and $minute >= $obsminute)) {
$result .= "$sep $time: $text";
$sep = ', ';
}
}
}
$result .= ";\n";
}
when ('chances') {
$result .= 'Chances of: ';
$result .= 'Fog: ' . $h->{'chanceoffog'} . '%, ' if $h->{'chanceoffog'};
$result .= 'Frost: ' . $h->{'chanceoffrost'} . '%, ' if $h->{'chanceoffrost'};
$result .= 'High temp: ' . $h->{'chanceofhightemp'} . '%, ' if $h->{'chanceofhightemp'};
$result .= 'Overcast: ' . $h->{'chanceofovercast'} . '%, ' if $h->{'chanceofovercast'};
$result .= 'Rain: ' . $h->{'chanceofrain'} . '%, ' if $h->{'chanceofrain'};
$result .= 'Remaining dry: ' . $h->{'chanceofremdry'} . '%, ' if $h->{'chanceofremdry'};
$result .= 'Snow: ' . $h->{'chanceofsnow'} . '%, ' if $h->{'chanceofsnow'};
$result .= 'Sunshine: ' . $h->{'chanceofsunshine'} . '%, ' if $h->{'chanceofsunshine'};
$result .= 'Thunder: ' . $h->{'chanceofthunder'} . '%, ' if $h->{'chanceofthunder'};
$result .= 'Windy: ' . $h->{'chanceofwindy'} . '%, ' if $h->{'chanceofwindy'};
$result =~ s/,\s+$/;\n/;
}
when ('wind') {
$result .= "Wind: $c->{'windspeedKmph'}kph/$c->{'windspeedMiles'}mph $c->{'winddirDegree'}°/$c->{'winddir16Point'}, ";
$result .= "gust: $h->{'WindGustKmph'}kph/$h->{'WindGustMiles'}mph, chill: $h->{'WindChillC'}C/$h->{'WindChillF'}F;\n";
}
when ('qlocation') {
my $l = $wttr->{'request'}->[0];
$result .= "Query location: $l->{'query'} ($l->{'type'});\n";
}
when ('dewpoint') { $result .= "Dew point: $h->{'DewPointC'}C/$h->{'DewPointF'}F;\n"; }
when ('feelslike') { $result .= "Feels like: $h->{'FeelsLikeC'}C/$h->{'FeelsLikeF'}F;\n"; }
when ('heatindex') { $result .= "Heat index: $h->{'HeatIndexC'}C/$h->{'HeatIndexF'}F;\n"; }
when ('moon') {
my $a = $w->{'astronomy'}->[0];
$result .= "Moon: phase: $a->{'moon_phase'}, illumination: $a->{'moon_illumination'}%, rise: $a->{'moonrise'}, set: $a->{'moonset'};\n";
}
when ('sun') {
my $a = $w->{'astronomy'}->[0];
$result .= "Sun: rise: $a->{'sunrise'}, set: $a->{'sunset'};\n";
}
when ('sunhours') { $result .= "Hours of sun: $w->{'sunHour'};\n"; }
when ('snowfall') { $result .= "Total snow: $w->{'totalSnow_cm'}cm;\n"; }
when ('uvindex') { $result .= "UV Index: $c->{'uvIndex'};\n"; }
when ('visibility') { $result .= "Visibility: $c->{'visibility'}km;\n"; }
when ('cloudcover') { $result .= "Cloud cover: $c->{'cloudcover'}%;\n"; }
when ('time') { $result .= "Observed: $c->{'localObsDateTime'};\n"; }
when ('location') {
if (exists $wttr->{nearest_area}) {
my $areaName = $wttr->{nearest_area}->[0]->{areaName}->[0]->{value};
my $region = $wttr->{nearest_area}->[0]->{region}->[0]->{value};
my $country = $wttr->{nearest_area}->[0]->{country}->[0]->{value};
my $location = '';
$location .= "$areaName, " if length $areaName;
$location .= "$region, " if length $region and $region ne $areaName;
$location .= "$country, " if length $country;
$location =~ s/, $//;
$result .= "Observation location: $location;\n";
} else {
$result .= "Query location: $location;\n";
}
}
when ('population') {
my $population = $wttr->{nearest_area}->[0]->{population};
$population =~ s/(\d)(?=(\d{3})+(\D|$))/$1\,/g;
$result .= "Population: $population;\n";
}
default { $result .= "Option $_ coming soon;\n" unless lc $_ eq 'u'; }
}
}
$result =~ s/;\s+$//;
return $result;
}
1;