<?php
// ─── Mensalidades (cartões de preço) + pedidos de inscrição ───────────────────
// Soft-delete via deleted_at. Only one card may be featured at a time — enforced
// here, on save, rather than in the schema.
// Used by views/admin/memberships/*.php, site/index.php and site/inscricao.php.

function memberships_defaults(): array {
    return [
        'name' => '', 'subtitle' => '', 'price' => '', 'is_addon' => 0,
        'price_suffix' => '/mês', 'features' => '', 'is_featured' => 0,
        'featured_label' => 'Mais popular', 'cta_label' => 'Inscrever',
        'item_order' => 0, 'is_active' => 1,
    ];
}

function db_memberships_list(PDO $pdo, bool $include_deleted = false): array {
    $sql = "SELECT * FROM memberships";
    if (!$include_deleted) $sql .= " WHERE deleted_at IS NULL";
    $sql .= " ORDER BY deleted_at IS NOT NULL, item_order, name";
    return $pdo->query($sql)->fetchAll(PDO::FETCH_ASSOC);
}

// Public list: active, not deleted. Defensive — the table may not exist yet on
// an install that hasn't run the migration.
function site_memberships(PDO $pdo): array {
    try {
        return $pdo->query(
            "SELECT * FROM memberships WHERE deleted_at IS NULL AND is_active = 1 ORDER BY item_order, name"
        )->fetchAll(PDO::FETCH_ASSOC);
    } catch (Throwable $e) { return []; }
}

function db_memberships_get(PDO $pdo, int $id): ?array {
    $stmt = $pdo->prepare("SELECT * FROM memberships WHERE id = ? LIMIT 1");
    $stmt->execute([$id]);
    return $stmt->fetch(PDO::FETCH_ASSOC) ?: null;
}

// Normalise raw POST into the row shape; appends messages to $errors.
function memberships_from_post(array $post, array &$errors): array {
    $price = str_replace([' ', '€'], '', trim((string) ($post['price'] ?? '')));
    $price = str_replace(',', '.', $price);
    $data = [
        'name'           => mb_substr(trim((string) ($post['name'] ?? '')), 0, 100),
        'subtitle'       => mb_substr(trim((string) ($post['subtitle'] ?? '')), 0, 255),
        'price'          => $price,
        'is_addon'       => !empty($post['is_addon']) ? 1 : 0,
        'price_suffix'   => mb_substr(trim((string) ($post['price_suffix'] ?? '')), 0, 60),
        'features'       => trim((string) ($post['features'] ?? '')),
        'is_featured'    => !empty($post['is_featured']) ? 1 : 0,
        'featured_label' => mb_substr(trim((string) ($post['featured_label'] ?? '')), 0, 40),
        'cta_label'      => mb_substr(trim((string) ($post['cta_label'] ?? '')), 0, 40),
        'item_order'     => (int) ($post['item_order'] ?? 0),
        'is_active'      => !empty($post['is_active']) ? 1 : 0,
    ];
    if ($data['name'] === '') $errors[] = 'O nome é obrigatório.';
    if ($price !== '' && (!is_numeric($price) || (float) $price < 0)) $errors[] = 'Preço inválido — usa um número, ex.: 34,90.';
    if ($data['featured_label'] === '') $data['featured_label'] = 'Mais popular';
    if ($data['cta_label'] === '')      $data['cta_label'] = 'Inscrever';
    return $data;
}

function _memberships_params(array $d): array {
    return [
        $d['name'], $d['subtitle'],
        $d['price'] === '' || $d['price'] === null ? null : number_format((float) $d['price'], 2, '.', ''),
        $d['is_addon'], $d['price_suffix'], $d['features'] !== '' ? $d['features'] : null,
        $d['is_featured'], $d['featured_label'], $d['cta_label'], $d['item_order'], $d['is_active'],
    ];
}

function _memberships_clear_featured(PDO $pdo, int $except): void {
    $pdo->prepare("UPDATE memberships SET is_featured = 0 WHERE id <> ? AND is_featured = 1")->execute([$except]);
}

function db_memberships_create(PDO $pdo, array $d): int {
    $pdo->beginTransaction();
    $stmt = $pdo->prepare("
        INSERT INTO memberships (name, subtitle, price, is_addon, price_suffix, features,
                                 is_featured, featured_label, cta_label, item_order, is_active,
                                 created_at, updated_at)
        VALUES (?,?,?,?,?,?,?,?,?,?,?, NOW(), NOW())
    ");
    $stmt->execute(_memberships_params($d));
    $id = (int) $pdo->lastInsertId();
    if ($d['is_featured']) _memberships_clear_featured($pdo, $id);
    $pdo->commit();
    return $id;
}

function db_memberships_update(PDO $pdo, int $id, array $d): bool {
    $pdo->beginTransaction();
    $stmt = $pdo->prepare("
        UPDATE memberships SET name = ?, subtitle = ?, price = ?, is_addon = ?, price_suffix = ?,
               features = ?, is_featured = ?, featured_label = ?, cta_label = ?, item_order = ?,
               is_active = ?, updated_at = NOW()
         WHERE id = ?
    ");
    $params   = _memberships_params($d);
    $params[] = $id;
    $stmt->execute($params);
    $changed = $stmt->rowCount() > 0;
    if ($d['is_featured']) _memberships_clear_featured($pdo, $id);
    $pdo->commit();
    return $changed;
}

function db_memberships_delete(PDO $pdo, int $id): bool {
    $stmt = $pdo->prepare("UPDATE memberships SET deleted_at = NOW(), is_featured = 0 WHERE id = ? AND deleted_at IS NULL");
    $stmt->execute([$id]);
    return $stmt->rowCount() > 0;
}

function db_memberships_restore(PDO $pdo, int $id): bool {
    $stmt = $pdo->prepare("UPDATE memberships SET deleted_at = NULL WHERE id = ? AND deleted_at IS NOT NULL");
    $stmt->execute([$id]);
    return $stmt->rowCount() > 0;
}

// "34,90 €" / "+10 €" / "Sob consulta" — PT formatting, drops ",00".
function membership_price_label(array $m): string {
    if ($m['price'] === null || $m['price'] === '') return 'Sob consulta';
    $p = (float) $m['price'];
    $s = number_format($p, floor($p) == $p ? 0 : 2, ',', ' ');
    return (!empty($m['is_addon']) ? '+' : '') . $s . ' €';
}

// Non-empty trimmed lines of a textarea — used for features, skills, formações.
function text_lines(?string $text): array {
    $out = [];
    foreach (preg_split('/\R/', (string) $text) as $line) {
        $line = trim($line, " \t-•");
        if ($line !== '') $out[] = $line;
    }
    return $out;
}

// ─── Pedidos de inscrição (leads) ─────────────────────────────────────────────

function membership_lead_statuses(): array {
    return ['novo' => 'Novo', 'contactado' => 'Contactado', 'inscrito' => 'Inscrito', 'descartado' => 'Descartado'];
}

function db_membership_leads_list(PDO $pdo, string $status = ''): array {
    $sql  = "SELECT * FROM membership_leads";
    $args = [];
    if ($status !== '' && isset(membership_lead_statuses()[$status])) { $sql .= " WHERE status = ?"; $args[] = $status; }
    $sql .= " ORDER BY created_at DESC, id DESC";
    $stmt = $pdo->prepare($sql);
    $stmt->execute($args);
    return $stmt->fetchAll(PDO::FETCH_ASSOC);
}

function db_membership_leads_count_new(PDO $pdo): int {
    try { return (int) $pdo->query("SELECT COUNT(*) FROM membership_leads WHERE status = 'novo'")->fetchColumn(); }
    catch (Throwable $e) { return 0; }
}

function db_membership_lead_create(PDO $pdo, array $d): int {
    $stmt = $pdo->prepare("
        INSERT INTO membership_leads (membership_id, membership_name, name, email, phone, message,
                                      consent, consent_text, ip, user_agent, created_at, updated_at)
        VALUES (?,?,?,?,?,?,?,?,?,?, NOW(), NOW())
    ");
    $stmt->execute([
        $d['membership_id'] ?: null,
        mb_substr((string) ($d['membership_name'] ?? ''), 0, 100),
        mb_substr(trim((string) ($d['name']    ?? '')), 0, 150),
        mb_substr(trim((string) ($d['email']   ?? '')), 0, 190),
        mb_substr(trim((string) ($d['phone']   ?? '')), 0, 40),
        mb_substr(trim((string) ($d['message'] ?? '')), 0, 1000),
        !empty($d['consent']) ? 1 : 0,
        mb_substr((string) ($d['consent_text'] ?? ''), 0, 255),
        mb_substr((string) ($d['ip']           ?? ''), 0, 45),
        mb_substr((string) ($d['user_agent']   ?? ''), 0, 255),
    ]);
    return (int) $pdo->lastInsertId();
}

function db_membership_lead_update(PDO $pdo, int $id, string $status, string $notes): bool {
    if (!isset(membership_lead_statuses()[$status])) return false;
    $stmt = $pdo->prepare("UPDATE membership_leads SET status = ?, admin_notes = ?, updated_at = NOW() WHERE id = ?");
    $stmt->execute([$status, $notes !== '' ? $notes : null, $id]);
    return $stmt->rowCount() > 0;
}

function db_membership_lead_delete(PDO $pdo, int $id): bool {
    $stmt = $pdo->prepare("DELETE FROM membership_leads WHERE id = ?");
    $stmt->execute([$id]);
    return $stmt->rowCount() > 0;
}