import { GET_BY_ID } from '../../sql/manifestattachment.js';
import resolveSelectedCompanyAccess from '../companyuser/resolveSelectedCompanyAccess.js';
import resolveManifestAccess from './resolveManifestAccess.js';
import { parseMeta } from './listByManifestId.js';
import request from '../request.js';

export default function getById(pool) {
  const access = resolveSelectedCompanyAccess(pool);
  const manifestAccess = resolveManifestAccess(pool);

  /**
   * Gets an attachment for a manifest by its attachment ID or file ID, including full file content.
   *
   * @param {number} googleAuthId - The id of the Google auth user.
   * @param {number} manifestId - The manifest ID.
   * @param {number} id - The attachment ID or file ID.
   * @returns {Promise<{id: number, manifestId: number, fileId: number, sort: number, hash: string, mimetype: string, name: string, size: number, created: Date, modified: Date, content: Buffer, thumbavif: Buffer|null, thumbx: number|null, thumby: number|null, meta: object|null}>} The attachment record with binary content.
   * @throws {Error} If the manifest or attachment is not found, or user is not authorized.
   *
   * @example
   * const attachment = await store.manifestattachment.getById(42, 1, 5);
   * // => { id, manifestId, fileId, sort, hash, mimetype, name, size, created, modified, content, thumbavif, thumbx, thumby }
   */
  return async (googleAuthId, manifestId, id) => {
    if (!Number.isFinite(id)) {
      throw new Error('Attachment not found');
    }

    const { companyId } = await access(googleAuthId);
    await manifestAccess(companyId, manifestId);

    const res = await request(pool)
      .input('manifestId', manifestId)
      .input('id', id)
      .query(GET_BY_ID);

    const row = res.recordset[0];
    if (!row) {
      throw new Error('Attachment not found');
    }

    return {
      id: row.id,
      manifestId: row.manifestId,
      fileId: row.fileId,
      sort: row.sort,
      hash: row.hash,
      mimetype: row.mimetype,
      name: row.name,
      size: Number(row.size),
      created: row.created,
      modified: row.modified,
      content: row.content,
      thumbavif: row.thumbavif ?? null,
      thumbx: row.thumbx ?? null,
      thumby: row.thumby ?? null,
      meta: parseMeta(row.meta),
    };
  };
}