#!/usr/bin/php
<?php

define('RESET', "\033[0m");
define('BOLD', "\033[1m");
define('INVERT', "\033[7m");

$options = getopt('fwmy', ['full', 'week-day', 'month-day', 'year-day']);
$display_current_year = $options['full'] ?? $options['f'] ?? null;
$options['week-day'] = $options['week-day'] ?? $options['w'] ?? null;
$options['month-day'] = $options['month-day'] ?? $options['m'] ?? null;
$options['year-day'] = $options['year-day'] ?? $options['y'] ?? true;

require 'libdit.php';

$curr_day = get_dit(format: '%d');
$wkd = get_dit(format: '%w');

// Display column names
echo 'déc ';
foreach (['zér', 'uni', 'duo', 'tri', 'qua', 'qui', 'sex', 'sep', 'oct', 'non'] as $day_in_wkd_nbr => $day_in_wkd_abbr) {
    if ($day_in_wkd_nbr == $curr_day % 10)
        echo BOLD . $day_in_wkd_abbr . RESET;
    else
        echo $day_in_wkd_abbr;
    echo ' ';
}
echo PHP_EOL;

if (isset($display_current_year)) {
    $start_day = 1;
    $stop_day = 365 + date('L');
} else {
    $start_day = ($wkd - 1) * 10;
    $stop_day = (($wkd + 2) * 10) - 1;
}
for ($day = $start_day ; $day <= $stop_day ; $day++) {
    $septenary_day_abbr = match (date_format(date_create_from_format('!Y z', date('Y') . ' ' . $day - 1), 'N')) {
        '1' => 'lun',
        '2' => 'mar',
        '3' => 'mer',
        '4' => 'jeu',
        '5' => 'ven',
        '6' => 'sam',
        '7' => 'dim',
    };

    if ($day % 10 === 0 AND $day !== $start_day)
        echo PHP_EOL;

    $i_wkd = intdiv($day, 10);

    if ($day % 10 === 0 OR $day === 1)
        if ($i_wkd == $wkd)
            echo BOLD . str_pad($i_wkd, 2, ' ', STR_PAD_LEFT) . RESET . '  ';
        else
            echo str_pad($i_wkd, 2, ' ', STR_PAD_LEFT) . '  ';
    if ($day === 1)
        echo '    ';

    if (isset($options['month-day']))
        $content = str_pad(date_format(date_create_from_format('!Y z', date('Y') . ' ' . $day - 1), 'j'), 3, ' ', STR_PAD_LEFT);
    else if (isset($options['week-day']))
        $content = $septenary_day_abbr;
    else if (isset($options['year-day']))
        $content = str_pad($day, 3, ' ', STR_PAD_LEFT);
    if ($day == $curr_day)
        echo INVERT . BOLD . $content . RESET . ' ';
    else
        if ($content === 'lun' OR $content === '  1')
            echo BOLD . $content . RESET . ' ';
        else
            echo $content . ' ';

}
echo PHP_EOL;