import type { ScrapePayload } from './types.js';

type Defaults = {
  optimizeImages: boolean;
  optimizeTitles: boolean;
  optimizeVariants: boolean;
  needTranslate: boolean;
};

export function buildPayloadFromUrl(
  url: string,
  needTranslateOverride: string,
  defaults: Defaults,
): ScrapePayload {
  if (!url || url.trim() === '') {
    throw new Error('url is required');
  }

  const payload: ScrapePayload = {
    url: url.trim(),
    optimizeImages: defaults.optimizeImages,
    optimizeTitles: defaults.optimizeTitles,
    optimizeVariants: defaults.optimizeVariants,
    needTranslate: defaults.needTranslate,
  };

  if (needTranslateOverride && needTranslateOverride.trim() !== '') {
    payload.needTranslate = parseBoolean(needTranslateOverride);
  }

  return payload;
}

export function validatePayloadJson(raw: string): ScrapePayload {
  let data: unknown;
  try {
    data = JSON.parse(raw);
  } catch (error) {
    throw new Error(`invalid payload json: ${(error as SyntaxError).message}`);
  }

  if (typeof data !== 'object' || data === null || Array.isArray(data)) {
    throw new Error('payload must be a JSON object');
  }

  const obj = data as Record<string, unknown>;
  if (!obj.url) {
    throw new Error('payload.url is required');
  }

  return {
    url: obj.url as string,
    optimizeImages: parseBoolean(obj.optimizeImages ?? true),
    optimizeTitles: parseBoolean(obj.optimizeTitles ?? true),
    optimizeVariants: parseBoolean(obj.optimizeVariants ?? true),
    needTranslate: parseBoolean(obj.needTranslate ?? false),
  };
}

function parseBoolean(value: unknown): boolean {
  const str = String(value).trim().toLowerCase();
  return ['1', 'true', 'yes', 'y'].includes(str);
}