import {
  DELETE_LINES_BY_MANIFEST,
  DELIVERY_TYPE,
  GET_DELIVERY_HEADER,
  UPDATE_MANIFEST,
} from '../../sql/delivery.js';
import request from '../request.js';
import resolveSelectedCompanyAccess from '../companyuser/resolveSelectedCompanyAccess.js';
import taxEnsure from '../tax/ensure.js';
import {
  loadDelivery,
  normalizeLines,
  parseDeliveryDate,
  shapeSummary,
} from './helpers.js';
import { assertSupplier, insertLines } from './writeLines.js';

/**
 * Updates a delivery's header and/or lines.
 *
 * @param {object} pool - The mssql connection pool.
 * @returns {Function} An async function that updates a delivery.
 *
 * @example
 * const fn = update(pool);
 * const delivery = await fn(42, 5, { number: 'D-2', lines: [...] });
 * // => { id, number, type, entityId, date, lines: [...] }
 */
export default function update(pool) {
  const access = resolveSelectedCompanyAccess(pool);
  const ensureTax = taxEnsure(pool);

  return async (googleAuthId, id, patch = {}) => {
    if (!Number.isFinite(id)) {
      throw new Error('Delivery not found');
    }

    const hasNumber = Object.prototype.hasOwnProperty.call(patch, 'number');
    const hasDate = Object.prototype.hasOwnProperty.call(patch, 'date');
    const hasSupplierId = Object.prototype.hasOwnProperty.call(
      patch,
      'supplierId',
    );
    const hasLines = Object.prototype.hasOwnProperty.call(patch, 'lines');

    if (!hasNumber && !hasDate && !hasSupplierId && !hasLines) {
      throw new Error('Invalid delivery');
    }

    let normalizedLines;
    if (hasLines) {
      normalizedLines = normalizeLines(patch.lines);
    }

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

    const tx = pool.transaction();
    await tx.begin();

    try {
      const existing = await request(pool, tx)
        .input('id', id)
        .input('companyId', companyId)
        .input('type', DELIVERY_TYPE)
        .query(GET_DELIVERY_HEADER);

      const current = existing.recordset[0];
      if (!current) {
        throw new Error('Delivery not found');
      }

      const summary = shapeSummary(current);

      let number = summary.number;
      if (hasNumber) {
        number = patch.number?.trim?.() ? patch.number.trim() : null;
        if (!number) {
          throw new Error('Invalid delivery');
        }
      }

      let date = summary.date;
      if (hasDate) {
        date = parseDeliveryDate(patch.date);
        if (!date) {
          throw new Error('Invalid delivery');
        }
      }

      let supplierId = summary.supplierId;
      if (hasSupplierId) {
        supplierId = await assertSupplier(
          pool,
          tx,
          companyId,
          patch.supplierId ?? null,
        );
      }

      await request(pool, tx)
        .input('id', id)
        .input('companyId', companyId)
        .input('type', DELIVERY_TYPE)
        .input('number', number)
        .input('entityId', supplierId)
        .input('date', date)
        .query(UPDATE_MANIFEST);

      if (hasLines) {
        await request(pool, tx)
          .input('manifestId', id)
          .query(DELETE_LINES_BY_MANIFEST);

        await insertLines(pool, tx, {
          manifestId: id,
          rootCategoryId,
          lines: normalizedLines,
          ensureTax,
        });
      }

      const delivery = await loadDelivery(pool, tx, companyId, id);
      await tx.commit();
      return delivery;
    } catch (err) {
      try {
        await tx.rollback();
      } catch {
        // ignore
      }
      throw err;
    }
  };
}