'use strict';

// Reviewed first-party modules only. No filesystem scanning or runtime installs.
const { manifests } = require('./manifest');
const { validate } = require('./validation');
const plugins = Object.freeze({
  weebcentral: require('./weebcentral'),
  mangadex: require('./mangadex'),
  mangapill: require('./mangapill'),
});

function parse(plugin, operation, input) {
  const manifest = manifests[plugin];
  const handler = manifest?.operations.includes(operation) ? plugins[plugin]?.[operation] : null;
  if (typeof handler !== 'function') throw new Error('Unknown source plugin or operation');
  if (!input || typeof input !== 'object' || typeof input.url !== 'string'
    || (typeof input.html !== 'string' && !(plugin === 'mangadex' && input.data && typeof input.data === 'object'))) {
    throw new Error('Invalid parser input');
  }
  const url = new URL(input.url);
  if (!['https:', 'http:'].includes(url.protocol)) throw new Error('Invalid source URL');
  if (!manifest.sourceHosts.includes(url.hostname)) throw new Error('Source URL does not belong to plugin');
  return validate(plugin, operation, handler({ html: input.html, data: input.data, url: url.href }));
}

module.exports = { parse, manifests };