import type { Request, Response, NextFunction } from 'express';
import { prisma } from '../config/database.js';
import { AppError } from './error.middleware.js';

declare global {
  namespace Express {
    interface Request {
      tenantSchema?: string;
    }
  }
}

export async function tenantMiddleware(req: Request, res: Response, next: NextFunction) {
  if (!req.user) {
    return next(new AppError(401, 'No autenticado'));
  }

  try {
    const tenant = await prisma.tenant.findUnique({
      where: { id: req.user.tenantId },
      select: { schemaName: true, active: true },
    });

    if (!tenant || !tenant.active) {
      return next(new AppError(403, 'Tenant no encontrado o inactivo'));
    }

    req.tenantSchema = tenant.schemaName;

    // Set search_path for this request
    await prisma.$executeRawUnsafe(`SET search_path TO "${tenant.schemaName}", public`);

    next();
  } catch (error) {
    next(new AppError(500, 'Error al configurar tenant'));
  }
}