#!/usr/bin/env perl
#---AUTOPRAGMASTART---
use 5.012;
use strict;
use warnings;
use diagnostics;
use mro 'c3';
use English qw( -no_match_vars );
use Carp;
our $VERSION = 1.5;
no if $] >= 5.017011, warnings => 'experimental::smartmatch';
#---AUTOPRAGMAEND---
no utf8;

use Device::BCM2835;
use Time::HiRes qw[sleep alarm time];
use Data::Dumper;

# Make sure the process name is maplat_failbutton
$0 = 'maplat_failbutton';

my $SHUTDOWN = 0;
$SIG{INT} = sub{print "GOT SIGINT, exiting...\n"; $SHUTDOWN=1;};
$SIG{TERM} = sub{print "GOT SIGTERM, exiting...\n"; $SHUTDOWN=1;};

if(!Device::BCM2835::init()) {
    die("Can't open device!");
}

my $testpinnumber = 13; # BCM internal pin number; 21 = GPIO Pin 40
my $sndidx = 1;

# Select as input device
Device::BCM2835::gpio_fsel($testpinnumber, &Device::BCM2835::BCM2835_GPIO_FSEL_INPT);

# Select Pull up resistor mode
Device::BCM2835::gpio_set_pud($testpinnumber, &Device::BCM2835::BCM2835_GPIO_PUD_UP);

my $lastswitch = -1; # "Unknown"
my $lastswitchtime = time;

while(!$SHUTDOWN) {

    my $switch = Device::BCM2835::gpio_lev($testpinnumber);
    if($switch != $lastswitch) {
        my $now = time;
        print "SWITCH SET TO $switch\n";
        if($lastswitch == -1) {
            $lastswitch = $switch;
            sleep(0.5);
            next;
        }
            
        $lastswitch = $switch;
        if($switch) {
            print "Switch pressed...\n";
            $lastswitchtime = $now;
        } else {
            my $cmd;
            my $presslength = $now - $lastswitchtime;
            print "PL: $presslength\n";
            if($presslength < 0.8) {
                print "    short click\n";
                $cmd = '/usr/bin/aplay -r 44100 -f S16_LE /home/cavac/src/maplat_failalert/bullshit' . $sndidx . '.raw';
                $sndidx++;
                if($sndidx == 4) {
                    $sndidx = 1;
                }
            } else {
                print "    long click\n";
                $cmd = '/usr/bin/aplay -r 44100 -f S16_LE /home/cavac/src/maplat_failalert/jeopardy.raw';
            }
            print "Running $cmd\n";
            `$cmd`;
            print "...done.\n";
        }
    }
    sleep(0.1);
}