theoldfitz/inc/hours.php

<?php
declare(strict_types=1);

/**
 * Pub hours helper functions.
 *
 * Days are keyed 0=Sunday .. 6=Saturday throughout (SQLite's/JS's own
 * convention), so callers can index straight into HOURS_DAY_NAMES etc.
 * without any Monday-first translation.
 */

require_once __DIR__ . '/db.php';

const HOURS_DAY_NAMES = [
    0 => 'Sunday', 1 => 'Monday', 2 => 'Tuesday', 3 => 'Wednesday',
    4 => 'Thursday', 5 => 'Friday', 6 => 'Saturday',
];

const HOURS_DAY_ABBR = [
    0 => 'Sun', 1 => 'Mon', 2 => 'Tue', 3 => 'Wed',
    4 => 'Thu', 5 => 'Fri', 6 => 'Sat',
];

/**
 * Returns all 7 days, 0..6, always fully populated (a day missing from the
 * table — shouldn't happen once seeded, but this keeps every caller below
 * from having to guard against a gap) defaults to closed.
 */
function get_all_hours(): array {
    $pdo = get_db();
    $rows = $pdo->query("SELECT * FROM pub_hours ORDER BY day_of_week ASC")->fetchAll() ?: [];

    $byDay = [];
    foreach ($rows as $row) {
        $byDay[(int) $row['day_of_week']] = $row;
    }

    $result = [];
    for ($d = 0; $d <= 6; $d++) {
        $result[$d] = $byDay[$d] ?? [
            'day_of_week' => $d,
            'is_open' => 0,
            'open_time' => null,
            'close_time' => null,
            'kitchen_close_time' => null,
        ];
    }
    return $result;
}

/**
 * Normalizes a submitted time value down to "HH:MM", or null if it's blank
 * or not something an <input type="time"> would ever actually send.
 */
function normalize_time_value(?string $value): ?string {
    if ($value === null) {
        return null;
    }
    $value = trim($value);
    if ($value === '') {
        return null;
    }
    if (!preg_match('/^([01]?\d|2[0-3]):([0-5]\d)/', $value, $m)) {
        return null;
    }
    return sprintf('%02d:%s', (int) $m[1], $m[2]);
}

/**
 * Persists all 7 days in one go from the admin form's day[N][...] fields.
 * A day marked closed has its times forced to null regardless of whatever
 * stale values its (disabled) time inputs may have carried in the POST.
 */
function save_all_hours(array $daysInput): void {
    $pdo = get_db();
    $stmt = $pdo->prepare("
        INSERT INTO pub_hours (day_of_week, is_open, open_time, close_time, kitchen_close_time, updated_at)
        VALUES (:day, :is_open, :open_time, :close_time, :kitchen_close_time, CURRENT_TIMESTAMP)
        ON CONFLICT(day_of_week) DO UPDATE SET
            is_open = excluded.is_open,
            open_time = excluded.open_time,
            close_time = excluded.close_time,
            kitchen_close_time = excluded.kitchen_close_time,
            updated_at = CURRENT_TIMESTAMP
    ");

    for ($d = 0; $d <= 6; $d++) {
        $dayData = is_array($daysInput[$d] ?? null) ? $daysInput[$d] : [];
        $isOpen = !empty($dayData['is_open']) ? 1 : 0;
        $openTime = normalize_time_value($dayData['open_time'] ?? null);
        $closeTime = normalize_time_value($dayData['close_time'] ?? null);
        $kitchenClose = normalize_time_value($dayData['kitchen_close_time'] ?? null);

        if (!$isOpen) {
            $openTime = null;
            $closeTime = null;
            $kitchenClose = null;
        }

        $stmt->execute([
            ':day' => $d,
            ':is_open' => $isOpen,
            ':open_time' => $openTime,
            ':close_time' => $closeTime,
            ':kitchen_close_time' => $kitchenClose,
        ]);
    }
}

/**
 * "4:00 PM" / "9 AM" — 12-hour, minutes dropped when they're :00 and
 * $dropZeroMinutes is set (used for one-off mentions like the kitchen note;
 * ranges below always keep :00 so both ends line up visually).
 */
function format_time_12h(?string $hhmm, bool $dropZeroMinutes = false): string {
    if (!$hhmm) {
        return '';
    }
    [$h, $m] = array_map('intval', explode(':', $hhmm));
    $period = $h >= 12 ? 'PM' : 'AM';
    $hour12 = $h % 12;
    if ($hour12 === 0) {
        $hour12 = 12;
    }
    if ($dropZeroMinutes && $m === 0) {
        return "{$hour12} {$period}";
    }
    return sprintf('%d:%02d %s', $hour12, $m, $period);
}

/**
 * "4:00 – 10:00 PM" (or "11:00 AM – 2:00 PM" when the two ends straddle
 * noon) — a single trailing meridiem when both ends share one, otherwise
 * both spelled out. $dash lets callers pick the tight "–" the footer's
 * condensed line uses vs the spaced " – " the hours card uses.
 */
function format_time_range(string $openTime, string $closeTime, string $dash = ' – '): string {
    $openHour = (int) explode(':', $openTime)[0];
    $closeHour = (int) explode(':', $closeTime)[0];
    $openPeriod = $openHour >= 12 ? 'PM' : 'AM';
    $closePeriod = $closeHour >= 12 ? 'PM' : 'AM';

    $openLabel = format_time_12h($openTime);
    $closeLabel = format_time_12h($closeTime);

    if ($openPeriod === $closePeriod) {
        $openLabel = trim(str_replace($openPeriod, '', $openLabel));
    }

    return "{$openLabel}{$dash}{$closeLabel}";
}

/**
 * Groups the week (in Sun..Sat order) into consecutive runs sharing the
 * same open/closed status and, if open, the same start/end time. Doesn't
 * wrap around from Saturday back to Sunday — a closed Sat + Sun would come
 * back as two separate single-day groups rather than one "Sat – Sun" — but
 * that's an edge case this pub's schedule doesn't hit, and not worth the
 * extra complexity of circular grouping for.
 */
function group_hours_into_ranges(array $hoursByDay): array {
    $groups = [];
    $current = null;

    for ($d = 0; $d <= 6; $d++) {
        $day = $hoursByDay[$d];
        $isOpen = !empty($day['is_open']) && $day['open_time'] && $day['close_time'];
        $key = $isOpen ? 'open|' . $day['open_time'] . '|' . $day['close_time'] : 'closed';

        if ($current !== null && $current['key'] === $key) {
            $current['days'][] = $d;
        } else {
            if ($current !== null) {
                $groups[] = $current;
            }
            $current = ['key' => $key, 'is_open' => $isOpen, 'days' => [$d], 'data' => $day];
        }
    }
    if ($current !== null) {
        $groups[] = $current;
    }

    return $groups;
}

/**
 * Rows for the "Hours & Visit" card: every open day gets its own line (even
 * if it's identical to its neighbor's), any run of closed days collapses
 * into one summary row — matches the level of detail the site originally
 * hardcoded (Thursday / Friday / Saturday individually, "Sun – Wed" combined).
 */
function hours_card_rows(array $hoursByDay): array {
    // Open days are collected separately from closed runs, and always
    // rendered first — matching the original hardcoded card, which led
    // with the days you *can* visit and tucked the closed stretch at the
    // bottom as a footnote, rather than the plain chronological (Sun..Sat)
    // order that would otherwise put a Sun–Wed closed run up top.
    $openRows = [];
    $closedGroups = [];
    $closedRun = [];

    for ($d = 0; $d <= 6; $d++) {
        $day = $hoursByDay[$d];
        $isOpen = !empty($day['is_open']) && $day['open_time'] && $day['close_time'];

        if ($isOpen) {
            if (!empty($closedRun)) {
                $closedGroups[] = $closedRun;
                $closedRun = [];
            }
            $openRows[] = ['label' => HOURS_DAY_NAMES[$d], 'text' => format_time_range($day['open_time'], $day['close_time'])];
        } else {
            $closedRun[] = $d;
        }
    }
    if (!empty($closedRun)) {
        $closedGroups[] = $closedRun;
    }

    $rows = $openRows;
    foreach ($closedGroups as $group) {
        $rows[] = ['label' => day_abbr_range($group), 'text' => 'Closed'];
    }

    return $rows;
}

/**
 * Condensed lines for the footer's compact hours summary: every group
 * (open or closed) collapses to one line, open groups listed first — the
 * order the site's footer originally used — with the kitchen note (if any)
 * inserted between the open and closed lines.
 */
function hours_footer_lines(array $hoursByDay): array {
    $groups = group_hours_into_ranges($hoursByDay);
    $openLines = [];
    $closedLines = [];

    foreach ($groups as $group) {
        $label = day_abbr_range($group['days'], ' — ');
        if ($group['is_open']) {
            $openLines[] = $label . ' · ' . format_time_range($group['data']['open_time'], $group['data']['close_time'], '–');
        } else {
            $closedLines[] = $label . ' · Closed';
        }
    }

    $lines = $openLines;
    $kitchenNote = hours_kitchen_note($hoursByDay);
    if ($kitchenNote) {
        $lines[] = $kitchenNote;
    }
    return array_merge($lines, $closedLines);
}

/**
 * "Sun" for a single day, "Sun – Wed" (or with a custom $dash) for a run.
 */
function day_abbr_range(array $days, string $dash = ' – '): string {
    if (count($days) === 1) {
        return HOURS_DAY_ABBR[$days[0]];
    }
    return HOURS_DAY_ABBR[$days[0]] . $dash . HOURS_DAY_ABBR[end($days)];
}

/**
 * "Kitchen closes at 9 PM" — or, if open days don't all share one kitchen
 * closing time, one clause per distinct time naming which days it applies
 * to. Returns null when no open day has a kitchen closing time set, so
 * callers can omit the note entirely rather than print an empty sentence.
 */
function hours_kitchen_note(array $hoursByDay, bool $dropZeroMinutes = true): ?string {
    $byTime = [];
    for ($d = 0; $d <= 6; $d++) {
        $day = $hoursByDay[$d];
        if (!empty($day['is_open']) && !empty($day['kitchen_close_time'])) {
            $byTime[$day['kitchen_close_time']][] = $d;
        }
    }
    if (empty($byTime)) {
        return null;
    }

    if (count($byTime) === 1) {
        $time = array_key_first($byTime);
        return 'Kitchen closes at ' . format_time_12h($time, $dropZeroMinutes);
    }

    $parts = [];
    foreach ($byTime as $time => $days) {
        $parts[] = format_time_12h($time, $dropZeroMinutes) . ' (' . day_abbr_range($days, '–') . ')';
    }
    return 'Kitchen closes at ' . implode(', ', $parts);
}