fix default file reader bug

client/src/app/shared/helpers/recipe.ts

@@ -1,3 +1,5 @@
+import { Tuple } from "./tuple";
+
 var rangeMaterialMapping: { [key: string]: (id: number) => boolean } = {
   soda: (id: number) => id == 1031,
   water: (id: number) => id == 1,
@@ -92,5 +94,24 @@ export var stringParamsDefinition: { [key: string]: string } = {
 
 export var conditionTests: { [key: string]: (arg: any) => boolean } = {
   'not-zero': (arg: any) => arg != 0,
+  'zero': (arg: any) => arg == 0,
   'false-if-another-exist': (arg: any) => arg[1] != undefined
 }
+
+
+export var countryMap: Tuple<string, string>[] = [
+  new Tuple<string, string>('tha', 'Thailand'),
+  new Tuple<string, string>('mys', 'Malaysia'),
+  new Tuple<string, string>('aus', 'Australia'),
+];
+
+export function getCountryMapSwitcher(param: string) {
+
+  console.log("param = ", param);
+
+  for (const country of countryMap) {
+    if(country.first == param || country.second == param){
+      return country.switchGet(param);
+    }
+  }
+}

client/src/app/shared/helpers/tuple.ts

@@ -0,0 +1,15 @@
+export class Tuple<T, U> {
+  constructor(public first: T, public second: U) {}
+
+  public get(): [T, U] {
+    return [this.first, this.second];
+  }
+
+  public switchGet(elem: any): any{
+    if(elem == this.first){
+      return this.second;
+    } else {
+      return this.first;
+    }
+  }
+}