fix bugs in sales and purchases API.

server/src/services/Sales/HasItemsEntries.ts

@@ -0,0 +1,56 @@
+import { difference, omit } from 'lodash';
+import { ItemEntry } from '@/models';
+
+export default class HasItemEntries {
+  /**
+   * Patch items entries to the storage.
+   *
+   * @param {Array} newEntries -
+   * @param {Array} oldEntries -
+   * @param {String} referenceType -
+   * @param {String|Number} referenceId -
+   *
+   * @return {Promise}
+   */
+  static async patchItemsEntries(newEntries: Array<any>, oldEntries: Array<any>, referenceType: string, referenceId: string|number) {
+    const entriesHasIds = newEntries.filter((entry) => entry.id);
+    const entriesHasNoIds = newEntries.filter((entry) => !entry.id);
+    const entriesIds = entriesHasIds.map(entry => entry.id);
+
+    const oldEntriesIds = oldEntries.map((e) => e.id);
+    const excludeAttrs = ['id', 'amount'];
+    const opers = [];
+
+    const entriesIdsShouldDelete = difference(
+      oldEntriesIds,
+      entriesIds,
+    );
+    if (entriesIdsShouldDelete.length > 0) {
+      const deleteOper = ItemEntry.tenant()
+        .query()
+        .whereIn('id', entriesIdsShouldDelete)
+        .delete();
+      opers.push(deleteOper);
+    }
+    entriesHasIds.forEach((entry) => {
+      const updateOper = ItemEntry.tenant()
+        .query()
+        .where('id', entry.id)
+        .update({
+          ...omit(entry, excludeAttrs),
+        });
+      opers.push(updateOper);
+    });
+    entriesHasNoIds.forEach((entry) => {
+      const insertOper = ItemEntry.tenant()
+        .query()
+        .insert({
+          reference_id: referenceId,
+          reference_type: referenceType,
+          ...omit(entry, excludeAttrs),
+        });
+      opers.push(insertOper);
+    });
+    return Promise.all([...opers]);
+  }
+}