<?php
// Sets which show is airing. Run before going live:
//   php cli/set_show.php              list shows and the current state
//   php cli/set_show.php <slug>       queue that show for the next broadcast
//                                     (or assign it to the live one if already streaming)
//   php cli/set_show.php <slug> 2026-10-30 19:30
//                                     queue it with an advertised start time (Eastern) for the main page
//   php cli/set_show.php <slug> 2026-10-30 19:30 --title="Ethereal and Enya"
//                                     also give the episode a title (works with or without a start time)

if (PHP_SAPI !== 'cli') {
    http_response_code(403);
    exit;
}

require __DIR__ . '/../includes/db.php';
require __DIR__ . '/../includes/broadcasts.php';

$db = getDB();
// Pull out --title=... so the remaining arguments stay positional
$episodeTitle = null;
$args = [];
foreach (array_slice($argv, 1) as $arg) {
    if (str_starts_with($arg, '--title=')) {
        $episodeTitle = substr($arg, 8);
    } else {
        $args[] = $arg;
    }
}
$slug = $args[0] ?? null;
$scheduledAt = null;
if (isset($args[1])) {
    $scheduledAt = stationTimeToUtc($args[1] . ' ' . ($args[2] ?? ''));
    if ($scheduledAt === null) {
        fwrite(STDERR, "Start time must be a valid date and time like 2026-10-30 19:30 (" . STATION_TIMEZONE_LABEL . ").\n");
        exit(1);
    }
}

if ($slug === null) {
    echo "Shows:\n";
    foreach ($db->query('SELECT slug, name FROM shows ORDER BY name') as $show) {
        printf("  %-20s %s\n", $show['slug'], $show['name']);
    }
    $current = currentShow($db);
    echo "\nCurrent: " . ($current ? $current['name'] : '(none)')
        . ($current && $current['episode_title'] ? " \"{$current['episode_title']}\"" : '') . (liveBroadcast($db) ? ' [live]' : '');
    if ($current && $current['scheduled_at'] && !$current['started_at']) {
        echo ', scheduled for ' . utcToStationTime($current['scheduled_at'])->format('Y-m-d H:i') . ' ' . STATION_TIMEZONE_LABEL . " ({$current['scheduled_at']} UTC)";
    }
    echo "\n";
    exit;
}

$stmt = $db->prepare('SELECT id, name FROM shows WHERE slug = ?');
$stmt->execute([$slug]);
$show = $stmt->fetch();
if (!$show) {
    fwrite(STDERR, "Unknown show '{$slug}'. Run without arguments to list shows.\n");
    exit(1);
}

$label = $show['name'] . (trim((string)$episodeTitle) !== '' ? ' "' . trim($episodeTitle) . '"' : '');
if (setBroadcastShow($db, (int)$show['id'], $scheduledAt, $episodeTitle) === 'live') {
    echo "Live broadcast is now {$label}." . ($scheduledAt ? ' (Start time ignored.)' : '') . "\n";
} else {
    echo "{$label} is queued for the next broadcast" . ($scheduledAt ? " at {$args[1]} {$args[2]} " . STATION_TIMEZONE_LABEL . " ({$scheduledAt} UTC)" : '') . ".\n";
}