travelynx/index.pl

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Perl
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2018-09-02 19:41:33 +00:00
#!/usr/bin/env perl
use Mojolicious::Lite;
use Cache::File;
use DateTime;
use DBI;
use List::Util qw(first);
use Travel::Status::DE::IRIS;
use Travel::Status::DE::IRIS::Stations;
our $VERSION = qx{git describe --dirty} || 'experimental';
my $cache_iris_main = Cache::File->new(
cache_root => $ENV{TRAVELYNX_IRIS_CACHE} // '/tmp/dbf-iris-main',
default_expires => '6 hours',
lock_level => Cache::File::LOCK_LOCAL(),
);
my $cache_iris_rt = Cache::File->new(
cache_root => $ENV{TRAVELYNX_IRISRT_CACHE} // '/tmp/dbf-iris-realtime',
default_expires => '70 seconds',
lock_level => Cache::File::LOCK_LOCAL(),
);
my $dbname = $ENV{TRAVELYNX_DB_FILE} // 'travelynx.sqlite';
my %action_type = (
checkin => 1,
checkout => 2,
undo => -1
);
app->defaults( layout => 'default' );
app->attr(
add_station_query => sub {
my ($self) = @_;
return $self->app->dbh->prepare(
qq{
insert into stations (ds100, name) values (?, ?)
}
);
}
);
app->attr(
add_user_query => sub {
my ($self) = @_;
return $self->app->dbh->prepare(
qq{
insert into users (name) values (?)
}
);
}
);
app->attr(
checkin_query => sub {
my ($self) = @_;
return $self->app->dbh->prepare(
qq{
insert into user_actions (
user_id, action_id, station_id, action_time,
train_type, train_line, train_no, train_id,
sched_time, real_time,
route, messages
) values (
?, $action_type{checkin}, ?, ?,
?, ?, ?, ?,
?, ?,
?, ?
)
}
);
},
);
app->attr(
checkout_query => sub {
my ($self) = @_;
return $self->app->dbh->prepare(
qq{
insert into user_actions (
user_id, action_id, station_id, action_time,
train_type, train_line, train_no, train_id,
sched_time, real_time,
route, messages
) values (
?, $action_type{checkout}, ?, ?,
?, ?, ?, ?,
?, ?,
?, ?
)
}
);
}
);
app->attr(
dbh => sub {
my ($self) = @_;
return DBI->connect( "dbi:SQLite:dbname=${dbname}", q{}, q{} );
}
);
app->attr(
get_all_actions_query => sub {
my ($self) = @_;
return $self->app->dbh->prepare(
qq{
select action_id, action_time, stations.ds100, stations.name,
train_type, train_line, train_no, train_id,
sched_time, real_time,
route, messages
from user_actions
join stations on station_id = stations.id
where user_id = ?
order by action_time asc
}
);
}
);
app->attr(
get_last_actions_query => sub {
my ($self) = @_;
return $self->app->dbh->prepare(
qq{
select action_id, action_time, stations.ds100, stations.name,
train_type, train_line, train_no, train_id, route
from user_actions
join stations on station_id = stations.id
where user_id = ?
order by action_time desc
limit 10
}
);
}
);
app->attr(
get_userid_query => sub {
my ($self) = @_;
return $self->app->dbh->prepare(
qq{select id from users where name = ?});
}
);
app->attr(
get_stationid_by_ds100_query => sub {
my ($self) = @_;
return $self->app->dbh->prepare(
qq{select id from stations where ds100 = ?});
}
);
app->attr(
get_stationid_by_name_query => sub {
my ($self) = @_;
return $self->app->dbh->prepare(
qq{select id from stations where name = ?});
}
);
app->attr(
undo_query => sub {
my ($self) = @_;
return $self->app->dbh->prepare(
qq{
insert into user_actions (
user_id, action_id, action_time,
) values (
?, $action_type{undo}, ?
)
}
);
},
);
sub epoch_to_dt {
my ($epoch) = @_;
return DateTime->from_epoch(
epoch => $epoch,
time_zone => 'Europe/Berlin'
);
}
sub get_departures {
my ( $station, $lookbehind ) = @_;
$lookbehind //= 20;
my @station_matches
= Travel::Status::DE::IRIS::Stations::get_station($station);
if ( @station_matches == 1 ) {
$station = $station_matches[0][0];
my $status = Travel::Status::DE::IRIS->new(
station => $station,
main_cache => $cache_iris_main,
realtime_cache => $cache_iris_rt,
lookbehind => 20,
datetime => DateTime->now( time_zone => 'Europe/Berlin' )
->subtract( minutes => $lookbehind ),
lookahead => $lookbehind + 20,
);
return {
results => [ $status->results ],
errstr => $status->errstr,
station_ds100 =>
( $status->station ? $status->station->{ds100} : 'undef' ),
station_name =>
( $status->station ? $status->station->{name} : 'undef' ),
};
}
elsif ( @station_matches > 1 ) {
return {
results => [],
errstr => 'Ambiguous station name',
};
}
else {
return {
results => [],
errstr => 'Unknown station name',
};
}
}
helper 'checkin' => sub {
my ( $self, $station, $train_id ) = @_;
my $status = get_departures($station);
if ( $status->{errstr} ) {
return ( undef, $status->{errstr} );
}
else {
my ($train)
= first { $_->train_id eq $train_id } @{ $status->{results} };
if ( not defined $train ) {
return ( undef, "Train ${train_id} not found" );
}
else {
my $success = $self->app->checkin_query->execute(
$self->app->get_user_id,
$self->get_station_id(
ds100 => $status->{station_ds100},
name => $status->{station_name}
),
DateTime->now( time_zone => 'Europe/Berlin' )->epoch,
$train->type,
$train->line_no,
$train->train_no,
$train->train_id,
$train->sched_departure->epoch,
$train->departure->epoch,
join( '|', $train->route ),
join( '|',
map { ( $_->[0] ? $_->[0]->epoch : q{} ) . ':' . $_->[1] }
$train->messages )
);
if ( defined $success ) {
return ( $train, undef );
}
else {
return ( undef, 'INSERT failed' );
}
}
}
};
helper 'checkout' => sub {
my ( $self, $station, $force ) = @_;
my $status = get_departures( $station, 180 );
my $user = $self->get_user_status;
my $train_id = $user->{train_id};
if ( $status->{errstr} and not $force ) {
return $status->{errstr};
}
if ( not $user->{checked_in} ) {
return 'You are not checked into any train';
}
else {
my ($train)
= first { $_->train_id eq $train_id } @{ $status->{results} };
if ( not defined $train ) {
if ($force) {
my $success = $self->app->checkout_query->execute(
$self->app->get_user_id,
$self->get_station_id(
ds100 => $status->{station_ds100},
name => $status->{station_name}
),
DateTime->now( time_zone => 'Europe/Berlin' )->epoch,
undef, undef, undef, undef, undef,
undef, undef, undef
);
if ( defined $success ) {
return;
}
else {
return 'INSERT failed';
}
}
else {
return "Train ${train_id} not found";
}
}
else {
my $success = $self->app->checkout_query->execute(
$self->app->get_user_id,
$self->get_station_id(
ds100 => $status->{station_ds100},
name => $status->{station_name}
),
DateTime->now( time_zone => 'Europe/Berlin' )->epoch,
$train->type,
$train->line_no,
$train->train_no,
$train->train_id,
$train->sched_departure->epoch,
$train->departure->epoch,
join( '|', $train->route ),
join( '|',
map { ( $_->[0] ? $_->[0]->epoch : q{} ) . ':' . $_->[1] }
$train->messages )
);
if ( defined $success ) {
return;
}
else {
return 'INSERT failed';
}
}
}
};
helper 'get_station_id' => sub {
my ( $self, %opt ) = @_;
$self->app->get_stationid_by_ds100_query->execute( $opt{ds100} );
my $rows = $self->app->get_stationid_by_ds100_query->fetchall_arrayref;
if ( @{$rows} ) {
return $rows->[0][0];
}
else {
$self->app->add_station_query->execute( $opt{ds100}, $opt{name} );
$self->app->get_stationid_by_ds100_query->execute( $opt{ds100} );
my $rows = $self->app->get_stationid_by_ds100_query->fetchall_arrayref;
return $rows->[0][0];
}
};
helper 'get_user_name' => sub {
my ($self) = @_;
my $user = $self->req->headers->header('X-Remote-User') // 'dev';
return $user;
};
helper 'get_user_id' => sub {
my ( $self, $user_name ) = @_;
$user_name //= $self->get_user_name;
if ( not -e $dbname ) {
$self->app->dbh->do(
qq{
create table users (
id integer primary key,
name char(64) not null unique
)
}
);
$self->app->dbh->do(
qq{
create table stations (
id integer primary key,
ds100 char(16) not null unique,
name char(64) not null unique
)
}
);
$self->app->dbh->do(
qq{
create table user_actions (
user_id int not null,
action_id int not null,
station_id int,
action_time int not null,
train_type char(16),
train_line char(16),
train_no char(16),
train_id char(128),
sched_time int,
real_time int,
route text,
messages text,
primary key (user_id, action_time)
)
}
);
}
$self->app->get_userid_query->execute($user_name);
my $rows = $self->app->get_userid_query->fetchall_arrayref;
if ( @{$rows} ) {
return $rows->[0][0];
}
else {
$self->app->add_user_query->execute($user_name);
$self->app->get_userid_query->execute($user_name);
my $rows = $self->app->get_userid_query->fetchall_arrayref;
return $rows->[0][0];
}
};
helper 'get_user_travels' => sub {
my ($self) = @_;
my $uid = $self->get_user_id( $self->get_user_name );
$self->app->get_all_actions_query->execute($uid);
my @travels;
while ( my @row = $self->app->get_all_actions_query->fetchrow_array ) {
my (
$action, $raw_ts, $ds100, $name,
$train_type, $train_line, $train_no, $train_id,
$raw_sched_ts, $raw_real_ts, $raw_route, $raw_messages
) = @row;
if ( $action == $action_type{checkin} ) {
push(
@travels,
{
from_name => $name,
sched_departure => epoch_to_dt($raw_sched_ts),
rt_departure => epoch_to_dt($raw_real_ts),
type => $train_type,
line => $train_line,
no => $train_no,
messages => [ split( qr{|}, $raw_messages ) ],
completed => 0,
}
);
}
elsif ( $action == $action_type{checkout} ) {
my $ref = $travels[-1];
$ref->{to_name} = $name;
$ref->{completed} = 1;
# if train_no is undef, we have a forced checkout without data
if ($train_no) {
$ref->{sched_arrival} = epoch_to_dt($raw_sched_ts),
$ref->{rt_arrival} = epoch_to_dt($raw_real_ts),
$ref->{messages} = [ split( qr{|}, $raw_messages ) ];
}
}
}
@travels = reverse @travels;
return @travels;
};
helper 'get_user_status' => sub {
my ($self) = @_;
my $uid = $self->get_user_id( $self->get_user_name );
$self->app->get_last_actions_query->execute($uid);
my $rows = $self->app->get_last_actions_query->fetchall_arrayref;
if ( @{$rows} ) {
my $now = DateTime->now( time_zone => 'Europe/Berlin' );
my $ts = DateTime->from_epoch(
epoch => $rows->[0][1],
time_zone => 'Europe/Berlin'
);
my $checkin_station_name = $rows->[0][3];
my @route = split( qr{[|]}, $rows->[0][8] // q{} );
my @route_after;
my $is_after = 0;
for my $station (@route) {
if ( $station eq $checkin_station_name ) {
$is_after = 1;
}
if ($is_after) {
push( @route_after, $station );
}
}
return {
checked_in => ( $rows->[0][0] == $action_type{checkin} ),
timestamp => $ts,
timestamp_delta => $now->subtract_datetime($ts),
station_ds100 => $rows->[0][2],
station_name => $rows->[0][3],
train_type => $rows->[0][4],
train_line => $rows->[0][5],
train_no => $rows->[0][6],
train_id => $rows->[0][7],
route => \@route,
route_after => \@route_after,
};
}
return {
checked_in => 0,
timestamp => 0
};
};
helper 'navbar_class' => sub {
my ( $self, $path ) = @_;
if ( $self->req->url eq $self->url_for($path) ) {
return 'active';
}
return q{};
};
get '/' => sub {
my ($self) = @_;
$self->render('landingpage');
};
get '/a/checkin' => sub {
my ($self) = @_;
my $station = $self->param('station');
my $train_id = $self->param('train');
my ( $train, $error ) = $self->checkin( $station, $train_id );
if ($error) {
$self->render(
'checkin',
error => $error,
train => undef
);
}
else {
$self->render(
'checkin',
error => undef,
train => $train
);
}
};
get '/a/checkout' => sub {
my ($self) = @_;
my $station = $self->param('station');
my $force = $self->param('force');
my $error = $self->checkout( $station, $force );
if ($error) {
$self->render( 'checkout', error => $error );
}
else {
$self->redirect_to("/${station}");
}
};
get '/*station' => sub {
my ($self) = @_;
my $station = $self->stash('station');
my $status = get_departures($station);
if ( $status->{errstr} ) {
$self->render( 'landingpage', error => $status->{errstr} );
}
else {
my @results = sort { $a->line cmp $b->line } @{ $status->{results} };
# You can't check into a train which terminates here
@results = grep { $_->departure } @results;
$self->render(
'departures',
ds100 => $status->{station_ds100},
results => \@results,
station => $status->{station_name}
);
}
};
app->defaults( layout => 'default' );
app->config(
hypnotoad => {
accepts => 10,
listen => [ $ENV{DBFAKEDISPLAY_LISTEN} // 'http://*:8092' ],
pid_file => '/tmp/db-fakedisplay.pid',
workers => $ENV{DBFAKEDISPLAY_WORKERS} // 2,
},
);
app->start;