fixed unique path function (#71)

src/datasources/product-api.ts

@@ -20,7 +20,12 @@ import {
   Batch,
 } from '../types/product-types';
 import { Maybe } from '../types/types';
-import { booleanStringField, nullOrNumber, roundOrDefaultTo } from './utils';
+import {
+  booleanStringField,
+  isInt,
+  nullOrNumber,
+  roundOrDefaultTo,
+} from './utils';
 import { UserInputError } from 'apollo-server';
 
 const MINUTE = 60;
@@ -279,65 +284,67 @@ export class ProductAPI extends BaseSQLDataSource {
     );
   }
 
-  async getUniqueProductSlug(
-    slug: string,
+  async getUniqueProductPath(
+    path: string,
     productId?: number,
   ): Promise<string> {
-    // If productId is set then check if slug is already
+    // If productId is set then check if path is already
     // set on that product.
     if (productId) {
       const productPath = await this.knex.raw(
         `SELECT path FROM "product-products" WHERE productid = ?`,
         [productId],
       );
-      if (productPath.rows[0].path === slug) {
-        return slug;
+      if (productPath.rows[0].path === path) {
+        return path;
       }
     }
 
-    // Check for unique-slug
+    // Check for unique-path
     // Get paths from product-products
+    const basePath = slug(path, { remove: /(\d+)(?!.*\d)/ }); // Remove last number adf-1-asdf-123 = adf-1-asdf-
     const pathResponse = await this.knex.raw(
       `SELECT path FROM "product-products" WHERE path LIKE ?`,
-      [slug + '%'],
+      [basePath + '%'],
     );
     const paths = pathResponse.rows.map((item) => item.path);
-
     // Evaluate new pathname
-    let newSlug = '';
+    let newPath = '';
     // If the exact match of the slug is not listed
     // in the paths queried from db. Then use the
     // tested slug.
-    if (!paths.includes(slug)) {
-      newSlug = slug;
+    if (!paths.includes(path)) {
+      newPath = path;
     } else {
       // Try to find any numbers in the pathname
       const numbers = paths
-        .map((path) => {
-          return parseInt(path.replace(slug + '-', ''));
+        .map((p) => {
+          const numStr = p.replace(basePath + '-', '');
+          return isInt(numStr) ? parseInt(numStr) : null;
         })
         .filter(Boolean); // Remove falsy
+
       if (numbers.length === 0) {
         // No numbers found, add 1.
-        newSlug = slug + '-1';
+        newPath = path + '-1';
       } else {
         // Get highest number + 1
         const next = Math.max(...numbers) + 1;
-        newSlug = slug + '-' + next;
+        newPath = basePath + '-' + next;
       }
     }
-    return newSlug;
+    return newPath;
   }
 
   async addProduct(name: string, batch: string): Promise<number> {
     const path = batch ? batch + ' ' + name : name;
-    const productSlug = slug(path);
-    const safeSlug = await this.getUniqueProductSlug(productSlug, null);
+    const productPath = slug(path);
+    const safePath = await this.getUniqueProductPath(productPath, null);
 
     const idres = await this.knex
       .table('product-products')
       .insert({
-        path: slug(safeSlug),
+        path: slug(safePath),
         browsable: 0,
         visible: 0,
       })
@@ -354,7 +361,7 @@ export class ProductAPI extends BaseSQLDataSource {
     info: ProductInfoInput,
   ): Promise<any[]> {
     // Check path and insert new unique path if taken
-    const uniquePath = await this.getUniqueProductSlug(info.path, productId);
+    const uniquePath = await this.getUniqueProductPath(info.path, productId);
 
     const promises = [];
     promises.push(

src/datasources/utils.ts

@@ -4,6 +4,10 @@ function isNumeric(n: InputType) {
   return !isNaN(parseFloat(n));
 }
 
+export function isInt(str: InputType) {
+  return !isNaN(parseFloat(str)) && Number.isInteger(parseFloat(str));
+}
+
 function isBoolean(n: InputType | boolean) {
   if (typeof n === 'boolean') {
     return true;