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|
#!/usr/bin/perl
use strict;
use warnings;
use Path::Tiny;
use Time::Moment;
use Text::ASCIITable;
use Getopt::Long qw( GetOptions );
use JSON::MaybeXS qw( decode_json );
use OpenBSD::Unveil;
# Unveil @INC.
foreach my $path (@INC) {
unveil( $path, 'rx' )
or die "Unable to unveil: $!";
}
my ( $use_local_file, $get_latest, $state_notes, $rows_to_print );
GetOptions(
"local" => \$use_local_file,
"latest" => \$get_latest,
"notes" => \$state_notes,
"rows=i" => \$rows_to_print,
"help" => sub { HelpMessage() },
) or die "Error in command line arguments";
sub HelpMessage {
print "Options:
--local Use local data
--latest Fetch latest data
--notes Print State Notes
--rows=i Number of rows to print (i is Integer)
--help Print this help message
";
exit;
}
die "Can't use --local and --latest together\n"
if $use_local_file and $get_latest ;
# %unveil contains list of paths to unveil with their permissions.
my %unveil = (
"/usr" => "rx",
"/var" => "rx",
"/etc" => "rx",
"/dev" => "rx",
"/tmp" => "rwc",
"/dev/null" => "rw",
);
# Unveil each path from %unveil.
keys %unveil;
# We use sort because otherwise keys is random order everytime.
foreach my $path ( sort keys %unveil ) {
unveil( $path, $unveil{$path} )
or die "Unable to unveil: $!";
}
my $file = '/tmp/data.json';
my $file_mtime;
# If $file exists then get mtime.
if ( -e $file ) {
my $file_stat = path($file)->stat;
$file_mtime = Time::Moment->from_epoch( $file_stat->[9] );
} else {
warn "File '$file' doesn't exist\nFetching latest...\n"
if $use_local_file;
}
# Fetch latest data only if the local data is older than 8 minutes or
# if the file doesn't exist.
if ( not -e $file
or $file_mtime < Time::Moment->now_utc->minus_minutes(8)
or $get_latest ) {
require HTTP::Tiny;
# Fetch latest data from api.
my $url = 'https://api.covid19india.org/data.json';
my $response = HTTP::Tiny
->new( verify_SSL => 1 )
->mirror($url, $file);
die "Failed to fetch latest data...
Reason: $response->{reason}\n
Content: $response->{content}
Status: $response->{status}\n"
unless $response->{success};
}
# Slurp api response to $file_data.
my $file_data = path($file)->slurp;
# Block further unveil calls.
unveil()
or die "Unable to lock unveil: $!";
# Decode $file_data to $json_data.
my $json_data = decode_json($file_data);
# Get statewise information.
my $statewise = $json_data->{statewise};
my ( $covid_19_data, $notes_table, @months, $today );
if ( $state_notes ) {
$notes_table = Text::ASCIITable->new( { drawRowLine => 1 } );
$notes_table->setCols( qw( State Notes ) );
$notes_table->setColWidth( 'Notes', 74 );
} else {
# Map month number to Months.
@months = qw( lol Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec );
$covid_19_data = Text::ASCIITable->new();
$covid_19_data->setCols(
'State',
'Confirmed',
'Active',
'Recovered',
'Deaths',
'Last Updated',
);
$covid_19_data->alignCol( {
'Confirmed' => 'left',
'Recovered' => 'left',
'Deaths' => 'left',
} );
$today = Time::Moment
->now_utc
->plus_hours(5)
->plus_minutes(30); # Current time in 'Asia/Kolkata' TimeZone.
}
# Print all the rows if $rows_to_print evaluates to False or is
# greater than the size of @$statewise or if user wants $state_notes.
$rows_to_print = scalar @$statewise
if ( not $rows_to_print
or $rows_to_print > scalar @$statewise
or $state_notes );
foreach my $i ( 0 ... $rows_to_print - 1 ) {
my $state = $statewise->[$i]{state};
$state = "India"
if $state eq "Total";
$state = $statewise->[$i]{statecode}
if length($state) > 16;
if ( $state_notes ) {
$notes_table->addRow(
$state,
$statewise->[$i]{statenotes},
) unless length($statewise->[$i]{statenotes}) == 0;
} else {
my $update_info;
my $lastupdatedtime = $statewise->[$i]{lastupdatedtime};
my $last_update_dmy = substr( $lastupdatedtime, 0, 10 );
# Add $update_info.
if ( $last_update_dmy
eq $today->strftime( "%d/%m/%Y" ) ) {
$update_info = "Today";
} elsif ( $last_update_dmy
eq $today->minus_days(1)->strftime( "%d/%m/%Y" ) ) {
$update_info = "Yesterday";
} elsif ( $last_update_dmy
eq $today->plus_days(1)->strftime( "%d/%m/%Y" ) ) {
$update_info = "Tomorrow"; # Hopefully we don't see this.
} else {
$update_info =
$months[substr( $lastupdatedtime, 3, 2 )] .
" " .
substr( $lastupdatedtime, 0, 2 );
}
my $confirmed = "$statewise->[$i]{confirmed}";
my $recovered = "$statewise->[$i]{recovered}";
my $deaths = "$statewise->[$i]{deaths}";
# Add delta only if it was updated Today.
if ( $update_info eq "Today" ) {
if ( $statewise->[$i]{deltaconfirmed} >= 0 ) {
$confirmed .= " (+$statewise->[$i]{deltaconfirmed})";
} else {
$confirmed .= " ($statewise->[$i]{deltaconfirmed})";
}
$recovered .= " (+$statewise->[$i]{deltarecovered})";
$deaths .= " (+$statewise->[$i]{deltadeaths})";
}
$covid_19_data->addRow(
$state,
$confirmed,
$statewise->[$i]{active},
$recovered,
$deaths,
$update_info,
);
}
}
# Generate tables.
if ( $state_notes ) {
print $notes_table;
} else {
print $covid_19_data;
}
|