import { CREATE as MSSQL_CREATE } from '../../providers/mssql/queries/entity.js';
import { CREATE as SQLITE_CREATE } from '../../providers/sqlite3/queries/entity.js';
import { INSERT as MSSQL_INSERT_HISTORY } from '../../providers/mssql/queries/entityhistory.js';
import { INSERT as SQLITE_INSERT_HISTORY } from '../../providers/sqlite3/queries/entityhistory.js';
import resolveSelectedCompanyAccess from '../companyuser/resolveSelectedCompanyAccess.js';
import ensureLieferantenGroup from './ensureLieferantenGroup.js';
import makeRunner from '../runner.js';

export default function create(provider) {
  const access = resolveSelectedCompanyAccess(provider);
  const isSqlite = provider?.dialect === 'sqlite3';
  const createSql = isSqlite ? SQLITE_CREATE : MSSQL_CREATE;
  const insertHistorySql = isSqlite
    ? SQLITE_INSERT_HISTORY
    : MSSQL_INSERT_HISTORY;

  /**
   * Creates a new supplier for the user's selected company, recording history.
   *
   * @param {number} googleAuthId - The id of the Google auth user.
   * @param {object} input - The supplier input.
   * @param {string} input.name - The supplier name.
   * @param {object} [tx] - Optional transaction to run within.
   * @returns {Promise<{id: number, name: string, createdAt: string, updatedAt: string}>} The created supplier.
   * @throws {Error} If the name is empty.
   *
   * @example
   * const supplier = await store.supplier.create(42, { name: 'Acme Supplies' });
   * // => { id, name, createdAt, updatedAt }
   */
  return async (googleAuthId, { name } = {}, tx) => {
    const cleaned = name?.trim();
    if (!cleaned) {
      throw new Error('Name required');
    }

    const runCreate = async (runner) => {
      const { companyId, companyuserId } = await access(googleAuthId, runner);
      const customergroupId = await ensureLieferantenGroup(provider, companyId, runner);

      const created = await runner.query(createSql, {
        customergroupId,
        firstName: null,
        name: cleaned,
        number: null,
      });

      const row = created.rows[0] ?? {
        id: created.insertId,
        name: cleaned,
        createdAt: new Date().toISOString(),
        updatedAt: new Date().toISOString(),
      };

      await runner.query(insertHistorySql, {
        entityId: row.id,
        companyuserId,
        text: 'Erstellt',
      });

      return {
        id: row.id,
        name: row.name,
        createdAt: row.createdAt,
        updatedAt: row.updatedAt,
      };
    };

    if (tx) {
      return runCreate(makeRunner(provider, tx));
    }
    if (typeof provider?.transaction === 'function') {
      return provider.transaction(runCreate);
    }
    return runCreate(makeRunner(provider));
  };
}