<?php
declare(strict_types=1);

require_once __DIR__ . '/Db.php';

/**
 * Lookups — vistas de solo lectura sobre la tabla users para poblar
 * dropdowns y resolver visibilidad.
 */
final class Lookups {
    /**
     * Nombres completos para el dropdown "Abogado Solicitante".
     * Solo socios y abogados; admins quedan ocultos (el programador no debe
     * aparecer en listas de abogados del firme).
     */
    public static function abogadoNames(): array {
        $rows = Db::pdo()->query(
            "SELECT DISTINCT name FROM users
             WHERE activo = 1
               AND role IN ('socio','abogado')
               AND name != ''
             ORDER BY name ASC"
        )->fetchAll();
        return array_map(fn($r) => $r['name'], $rows);
    }

    /** Usuarios activos para el picker de Involucrados (sin admins ni placeholders). */
    public static function involucrablesUsers(): array {
        $rows = Db::pdo()->query(
            "SELECT id, email, name, role
             FROM users
             WHERE activo = 1
               AND role != 'admin'
               AND email NOT LIKE 'placeholder-%'
             ORDER BY name ASC, email ASC"
        )->fetchAll();
        foreach ($rows as &$r) { $r['id'] = (int)$r['id']; }
        return $rows;
    }

    /**
     * Todos los users para el Panel de Control.
     * Si $includeAdmins es false, oculta el rol admin (uso para socios).
     */
    public static function allUsers(bool $includeAdmins = true): array {
        $sql = "SELECT id, email, name, role, activo, first_seen_at, last_login_at
                FROM users";
        if (!$includeAdmins) $sql .= " WHERE role != 'admin'";
        $sql .= " ORDER BY name ASC, email ASC";
        $rows = Db::pdo()->query($sql)->fetchAll();
        foreach ($rows as &$r) {
            $r['id']     = (int)$r['id'];
            $r['activo'] = (int)$r['activo'];
        }
        return $rows;
    }

    /** id del usuario por email; null si no existe. */
    public static function userIdByEmail(string $email): ?int {
        $stmt = Db::pdo()->prepare('SELECT id FROM users WHERE email = :e');
        $stmt->execute([':e' => $email]);
        $id = $stmt->fetchColumn();
        return $id === false ? null : (int)$id;
    }
}