summaryrefslogtreecommitdiff
path: root/index.pl
blob: 8912c690188bedabc4a77e9fc750589886805d22 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
#!/usr/bin/env perl
use Mojolicious::Lite;
use DBI;
use Travel::Status::DE::IRIS;
use Travel::Status::DE::IRIS::Stations;
use 5.014;
use utf8;

no if $] >= 5.018, warnings => "experimental::smartmatch";

#our $VERSION = qx{git describe --dirty} || '0.01';

my $table = $ENV{DBDB_TABLE} // 'departures';

app->defaults( layout => 'default' );

app->attr(
	dbh => sub {
		my $self = shift;

		my $dbname = $ENV{DBDB_FILE} // 'iris.sqlite';
		my $dbh = DBI->connect( "dbi:SQLite:dbname=$dbname", q{}, q{} );

		return $dbh;
	}
);

helper count_unique_column => sub {
	my ($self, $column) = @_;
	my $dbh = $self->app->dbh;

	if (not $column) {
		return scalar $dbh->selectall_arrayref("select count() from $table")->[0][0];
	}
	return scalar $dbh->selectall_arrayref("select count(distinct $column) from $table")->[0][0];
};

helper single_query => sub {
	my ($self, $query) = @_;

	return scalar $self->app->dbh->selectall_arrayref($query)->[0][0];
};

helper globalstats => sub {
	my ($self) = @_;
	my $dbh = $self->app->dbh;

	my $stations = [ map { Travel::Status::DE::IRIS::Stations::get_station($_)->[1] }
		@{ $self->app->dbh->selectcol_arrayref(
		"select distinct station from $table") } ];

	my $ret = {
		departures => $self->count_unique_column(),
		stationlist => $stations,
		stations => $self->count_unique_column('station'),
		realtime => $self->single_query("select count() from $table where delay is not null"),
		realtime_rate => $self->single_query("select avg(delay is not null) from $table"),
		ontime => $self->single_query("select count() from $table where delay < 1"),
		ontime_rate => $self->single_query("select avg(delay < 1) from $table"),
		days => $self->count_unique_column('strftime("%Y%m%d", scheduled_time, "unixepoch")'),
		delayed => $self->single_query("select count() from $table where delay > 5"),
		delayed_rate => $self->single_query("select avg(delay > 5) from $table"),
		canceled => $self->single_query("select count() from $table where is_canceled > 0"),
		canceled_rate => $self->single_query("select avg(is_canceled > 0) from $table"),
		delay_sum => $self->single_query("select sum(delay) from $table"),
		delay_avg => $self->single_query("select avg(delay) from $table"),
	};

	return $ret;
};

get '/by_hour.json' => sub {
	my $self = shift;

	my $json = [];

	my $res = $self->app->dbh->selectall_arrayref(
		qq{
		select strftime("%H", scheduled_time, "unixepoch") as time,
		avg(delay) as date from $table group by time}
	);

	for my $row ( @{$res} ) {
		push(
			@{$json},
			{
				hour     => $row->[0],
				avgdelay => $row->[1]
			}
		);
	}

	$self->render( json => $json );
	return;
};

get '/2ddata.tsv' => sub {
	my $self      = shift;
	my $aggregate = $self->param('aggregate') // 'hour';
	my $metric    = $self->param('metric') // 'delay';
	my $msgnum    = int( $self->param('msgnum') // 0 );

	my @weekdays = qw(So Mo Di Mi Do Fr Sa);

	if ( $msgnum < 0 or $msgnum > 99 ) {
		$msgnum = 0;
	}

	my $where_clause = '1 = 1';

	my $res = "x\ty\n";

	my $query;
	my $format = 'strftime("%H", scheduled_time, "unixepoch")';

	given ($aggregate) {
		when ('weekday') {
			$format = 'strftime("%w", scheduled_time, "unixepoch")';
		}
		when ('weekhour') {
			$format = 'strftime("%w%H", scheduled_time, "unixepoch")';
		}
		when ('line') {
			$format       = 'train_type || " " || line_no';
			$where_clause = 'line_no is not null';
		}
		when ('train_type') {
			$format = 'train_type';
		}
	}

	given ($metric) {
		when ('cancel_num') {
			$query = qq{
				select $format as aggregate,
				count(is_canceled) from $table where $where_clause group by aggregate
			};
		}
		when ('cancel_rate') {
			$query = qq{
				select $format as aggregate,
				avg(is_canceled) from $table where $where_clause group by aggregate
			};
		}
		when ('delay') {
			$query = qq{
				select $format as aggregate,
				avg(delay) from $table where not is_canceled and $where_clause group by aggregate
			};
		}
		when ('message_rate') {
			$query = qq{
				select $format as aggregate,
				avg(msgtable.train_id is not null) from $table
				left outer join msg_$msgnum as msgtable using
				(scheduled_time, train_id) where $where_clause group by aggregate
			};
		}
		when ('realtime_rate') {
			$query = qq{
				select $format as aggregate,
				avg(delay is not null) from $table
				where $where_clause group by aggregate
			};
		}
	}

	my $dbres = $self->app->dbh->selectall_arrayref($query);

	if ( $aggregate eq 'weekday' ) {
		@{$dbres} = map { [ $weekdays[ $_->[0] ], $_->[1] ] }
		  ( @{$dbres}[ 1 .. 6 ], $dbres->[0] );
	}
	elsif ( $aggregate eq 'weekhour' ) {
		@{$dbres} = map {
			[
				$weekdays[ substr( $_->[0], 0, 1 ) ] . q{ }
				  . substr( $_->[0], 1 ),
				$_->[1]
			]
		} ( @{$dbres}[ 1 * 24 .. 6 * 24 ], $dbres->[0] );
	}

	for my $row ( @{$dbres} ) {
		$res .= sprintf( "%s\t%s\n", @{$row} );
	}

	$self->render( data => $res );
	return;
};

get '/' => sub {
	my $self = shift;

	$self->render('intro');
	return;
};

get '/all' => sub {
	my $self = shift;
	my $dbh  = $self->app->dbh;

	my $num_departures = $dbh->selectall_arrayref(
		qq{
		select count() from $table}
	)->[0][0];

	$self->render(
		'main',
		num_departures => $num_departures,
	);
	return;
};

app->config(
	hypnotoad => {
		accepts  => 10,
		listen   => ['http://*:8093'],
		pid_file => '/tmp/db-fake.pid',
		workers  => $ENV{DBDB_WORKERS} // 2,
	},
);

app->types->type( json => 'application/json; charset=utf-8' );
app->start();