Add developer toolkit UI component

The commit adds a new a UI component that's enabled in development mode.
This component, initially, provides a button that wen clicked, logs all
the script and category names to the console. It helps revising names
used throughout the application.

By having this component in a conditionally rendered component, it's
excluded from the production builds.

src/presentation/components/App.vue

@@ -7,11 +7,12 @@
       <TheCodeButtons class="app__row app__code-buttons" />
       <TheFooter />
     </div>
+    <OptionalDevToolkit />
   </div>
 </template>
 
 <script lang="ts">
-import { defineComponent } from 'vue';
+import { defineAsyncComponent, defineComponent } from 'vue';
 import TheHeader from '@/presentation/components/TheHeader.vue';
 import TheFooter from '@/presentation/components/TheFooter/TheFooter.vue';
 import TheCodeButtons from '@/presentation/components/Code/CodeButtons/TheCodeButtons.vue';
@@ -22,13 +23,18 @@ import { provideDependencies } from '../bootstrapping/DependencyProvider';
 
 const singletonAppContext = await buildContext();
 
+const OptionalDevToolkit = process.env.NODE_ENV !== 'production'
+  ? defineAsyncComponent(() => import('@/presentation/components/DevToolkit/DevToolkit.vue'))
+  : null;
+
 export default defineComponent({
   components: {
     TheHeader,
     TheCodeButtons,
     TheScriptArea,
     TheSearchBar,
     TheFooter,
+    OptionalDevToolkit,
   },
   setup() {
     provideDependencies(singletonAppContext); // In Vue 3.0 we can move it to main.ts
@@ -59,5 +65,4 @@ export default defineComponent({
     }
   }
 }
-
 </style>

src/presentation/components/DevToolkit/DevToolkit.vue

@@ -0,0 +1,71 @@
+<template>
+  <div class="dev-toolkit">
+    <div class="title">
+      Tools
+    </div>
+    <hr />
+    <button
+      v-for="action in devActions"
+      @click="action.handler"
+      :key="action.name"
+      type="button">
+      {{ action.name }}
+    </button>
+  </div>
+</template>
+
+<script lang="ts">
+import { defineComponent } from 'vue';
+import { dumpNames } from './DumpNames';
+
+export default defineComponent({
+  setup() {
+    const devActions: readonly DevAction[] = [
+      {
+        name: 'Log script/category names',
+        handler: async () => {
+          const names = await dumpNames();
+          console.log(names);
+        },
+      },
+    ];
+    return {
+      devActions,
+    };
+  },
+});
+
+interface DevAction {
+  readonly name: string;
+  readonly handler: () => void | Promise<void>;
+}
+</script>
+
+<style scoped lang="scss">
+@use "@/presentation/assets/styles/main" as *;
+
+.dev-toolkit {
+  position: fixed;
+  top: 0;
+  right: 0;
+  background-color: rgba($color-on-surface, 0.5);
+  color: $color-on-primary;
+  padding: 10px;
+  z-index: 10000;
+
+  .title {
+    font-weight: bold;
+    text-align: center;
+  }
+
+  button {
+    display: block;
+    margin-bottom: 10px;
+    padding: 5px 10px;
+    background-color: $color-primary;
+    color: $color-on-primary;
+    border: none;
+    cursor: pointer;
+  }
+}
+</style>

src/presentation/components/DevToolkit/DumpNames.ts

@@ -0,0 +1,35 @@
+import { IApplication } from '@/domain/IApplication';
+import { ApplicationFactory } from '@/application/ApplicationFactory';
+
+export async function dumpNames(): Promise<string> {
+  const application = await ApplicationFactory.Current.getApp();
+  const names = collectNames(application);
+  const output = names.join('\n');
+  return output;
+}
+
+function collectNames(application: IApplication): string[] {
+  const { collections } = application;
+
+  const allNames = [
+    ...collections.flatMap((collection) => collection.getAllCategories().map((c) => c.name)),
+    ...collections.flatMap((collection) => collection.getAllScripts().map((c) => c.name)),
+  ];
+
+  const uniqueNames = [...new Set(allNames)];
+
+  return shuffle(uniqueNames);
+}
+
+/*
+  Shuffle an array of strings, returning a new array with elements in random order.
+  Uses the Fisher-Yates (or Durstenfeld) algorithm.
+*/
+function shuffle(array: readonly string[]): string[] {
+  const shuffledArray = [...array];
+  for (let i = array.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1));
+    [shuffledArray[i], shuffledArray[j]] = [shuffledArray[j], shuffledArray[i]];
+  }
+  return shuffledArray;
+}

src/presentation/components/TheHeader.vue

@@ -22,6 +22,7 @@ export default defineComponent({
     };
   },
 });
+
 </script>
 
 <style scoped lang="scss">