import { NextFunction, Request, Response } from "express";
import httpStatus from "http-status";
import { ZodSchema } from "zod";
import { ApiError } from "./api-error";

export const validateAndParseBody =
  (schema: ZodSchema, options?: { sanitize?: boolean }) =>
  (req: Request, res: Response, next: NextFunction) => {
    const result = schema.safeParse(req.body);
    if (!result.success) {
      // Construye errores detallados
      const validationErrors = result.error.errors.map((err) => ({
        field: err.path.join("."),
        message: err.message,
      }));

      throw new ApiError({
        status: httpStatus.BAD_REQUEST, //400
        title: "Validation Error",
        detail: "Algunos campos no cumplen con los criterios de validación.",
        type: "https://example.com/probs/validation-error",
        instance: req.originalUrl,
        errors: validationErrors,
      });
    }

    // Si pasa la validación, opcionalmente reescribe req.body
    if (options?.sanitize ?? true) {
      req.body = result.data;
    }

    next();
  };