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package Travelynx::Helper::DBDB;
# Copyright (C) 2020 Daniel Friesel
#
# SPDX-License-Identifier: AGPL-3.0-or-later
use strict;
use warnings;
use 5.020;
use Encode qw(decode);
use Mojo::Promise;
use JSON;
sub new {
my ( $class, %opt ) = @_;
my $version = $opt{version};
$opt{header}
= { 'User-Agent' =>
"travelynx/${version} on $opt{root_url} +https://finalrewind.org/projects/travelynx"
};
return bless( \%opt, $class );
}
sub has_wagonorder_p {
my ( $self, $ts, $train_no ) = @_;
my $api_ts = $ts->strftime('%Y%m%d%H%M');
my $url
= "https://lib.finalrewind.org/dbdb/has_wagonorder/${train_no}/${api_ts}";
my $cache = $self->{cache};
my $promise = Mojo::Promise->new;
if ( my $content = $cache->get($url) ) {
if ( $content eq 'y' ) {
return $promise->resolve;
}
elsif ( $content eq 'n' ) {
return $promise->reject;
}
}
$self->{user_agent}->request_timeout(5)->head_p( $url => $self->{header} )
->then(
sub {
my ($tx) = @_;
if ( $tx->result->is_success ) {
$cache->set( $url, 'y' );
$promise->resolve;
}
else {
$cache->set( $url, 'n' );
$promise->reject;
}
return;
}
)->catch(
sub {
$cache->set( $url, 'n' );
$promise->reject;
return;
}
)->wait;
return $promise;
}
sub get_wagonorder_p {
my ( $self, $ts, $train_no ) = @_;
my $api_ts = $ts->strftime('%Y%m%d%H%M');
my $url
= "https://ist-wr.noncd.db.de/wagenreihung/1.0/${train_no}/${api_ts}";
my $cache = $self->{cache};
my $promise = Mojo::Promise->new;
if ( my $content = $cache->thaw($url) ) {
$promise->resolve($content);
return $promise;
}
$self->{user_agent}->request_timeout(5)->get_p( $url => $self->{header} )
->then(
sub {
my ($tx) = @_;
my $body = decode( 'utf-8', $tx->res->body );
my $json = JSON->new->decode($body);
$cache->freeze( $url, $json );
$promise->resolve($json);
return;
}
)->catch(
sub {
my ($err) = @_;
$promise->reject($err);
return;
}
)->wait;
return $promise;
}
sub get_stationinfo_p {
my ( $self, $eva ) = @_;
my $url = "https://lib.finalrewind.org/dbdb/s/${eva}.json";
my $cache = $self->{cache};
my $promise = Mojo::Promise->new;
if ( my $content = $cache->thaw($url) ) {
return $promise->resolve($content);
}
$self->{user_agent}->request_timeout(5)->get_p( $url => $self->{header} )
->then(
sub {
my ($tx) = @_;
if ( my $err = $tx->error ) {
$cache->freeze( $url, {} );
$promise->reject("HTTP $err->{code} $err->{message}");
return;
}
my $json = $tx->result->json;
$cache->freeze( $url, $json );
$promise->resolve($json);
return;
}
)->catch(
sub {
my ($err) = @_;
$cache->freeze( $url, {} );
$promise->reject($err);
return;
}
)->wait;
return $promise;
}
1;
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