import type { PipeTransform } from '@nestjs/common';
import { z } from 'zod';
import { AppError } from './errors/app-error';

export class SchemaPipe<T> implements PipeTransform<unknown, T> {
  constructor(private readonly schema: z.ZodType<T>) {}
  transform(value: unknown): T {
    const result = this.schema.safeParse(value);
    if (!result.success) {
      throw new AppError('REQUEST_INVALID', 'SCHEMA_REJECTED', [
        ...new Set(result.error.issues.map((issue) => issue.path.join('.'))),
      ]);
    }
    return result.data;
  }
}