<?php
// public/userarea/api/api_user_schools.php
// Returns ONLY the schools where the authenticated user is enrolled.

declare(strict_types=1);

require_once __DIR__ . '/_bootstrap.php'; // provides $pdo, $iduserlogin

try {
    // Optional user info for greeting
    $stmt = $pdo->prepare("SELECT first_name, avatar FROM auth_users WHERE id = ? LIMIT 1");
    $stmt->execute([$iduserlogin]);
    $user = $stmt->fetch(PDO::FETCH_ASSOC) ?: [];

    // User schools only
    $stmt = $pdo->prepare("
        SELECT 
            s.id,
            s.name,
            s.logo,
            s.address_street,
            s.address_postal_code,
            s.address_city,
            s.address_province,
            s.address_country
        FROM user_schools us
        JOIN schools s ON us.school_id = s.id
        WHERE us.user_id = ?
          AND us.status = 'active'
          AND s.status = 'active'
        ORDER BY s.name
    ");
    $stmt->execute([$iduserlogin]);
    $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);

    $schools = array_map(function (array $s): array {
        $street = trim((string)($s['address_street'] ?? ''));
        $zip    = trim((string)($s['address_postal_code'] ?? ''));
        $city   = trim((string)($s['address_city'] ?? ''));
        $prov   = trim((string)($s['address_province'] ?? ''));
        $cntry  = trim((string)($s['address_country'] ?? ''));

        $line2Parts = [];
        if ($zip !== '')  $line2Parts[] = $zip;
        if ($city !== '') $line2Parts[] = $city;

        $line2 = implode(' ', $line2Parts);
        if ($prov !== '')  $line2 .= ' (' . $prov . ')';
        if ($cntry !== '') $line2 .= ' - ' . $cntry;

        return [
            'id' => (int)$s['id'],
            'name' => (string)($s['name'] ?? ''),
            'logo' => ($s['logo'] ?? null) !== null && trim((string)$s['logo']) !== '' ? (string)$s['logo'] : null,
            'address_street' => $street !== '' ? $street : null,
            'address_postal_code' => $zip !== '' ? $zip : null,
            'address_city' => $city !== '' ? $city : null,
            'address_province' => $prov !== '' ? $prov : null,
            'address_country' => $cntry !== '' ? $cntry : null,
            'address_full' => trim($street . ($street && $line2 ? ', ' : '') . $line2),
        ];
    }, $rows);

    $autoSelect = (count($schools) === 1);
    $selectedSchoolId = $autoSelect ? (int)$schools[0]['id'] : null;

    echo json_encode([
        'success' => true,
        'auto_select' => $autoSelect,
        'selected_school_id' => $selectedSchoolId,
        'user' => [
            'id' => $iduserlogin,
            'first_name' => $user['first_name'] ?? null,
            'avatar' => $user['avatar'] ?? null,
        ],
        'schools' => $schools,
        'message' => empty($schools)
            ? 'No active schools assigned to this user. Please contact your school.'
            : null
    ], JSON_UNESCAPED_UNICODE);
} catch (Throwable $e) {
    http_response_code(500);
    echo json_encode([
        'success' => false,
        'message' => 'Server error.',
        'error' => $e->getMessage()
    ]);
}