enkapsulacja i uporządkowanie komponentów

src/components/app/Footer.vue

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+<template>
+  <footer>
+    <div class="text--grayed">
+      Ta strona ma charakter informacyjny. Autor nie ponosi odpowiedzialności za tworzenie pociągów niezgodnych z
+      <a
+        style="color: #ccc"
+        href="https://docs.google.com/document/d/1UAAPUtN0d_RoS4RgOzEzllJZJhA0VcizzCzKW4QylbY/edit"
+        target="_blank"
+      >
+        regulaminem symulatora Train Driver 2 </a
+      >!
+    </div>
+
+    <div class="text--grayed" v-if="store.stockData">
+      Strona jest kompletna dla wersji {{ store.stockData.version }} symulatora TD2
+    </div>
+
+    <div>
+      &copy;
+      <a href="https://td2.info.pl/profile/?u=20777" target="_blank">Spythere</a>
+      {{ new Date().getUTCFullYear() }} | v{{ VERSION }}{{ !isOnProductionHost ? 'dev' : '' }}
+    </div>
+  </footer>
+</template>
+
+<script lang="ts">
+import { defineComponent } from 'vue';
+import packageInfo from '../../../package.json';
+import { useStore } from '../../store';
+
+export default defineComponent({
+  data() {
+    return {
+      isOnProductionHost: location.hostname == 'pojazdownik-td2.web.app',
+      VERSION: packageInfo.version,
+      store: useStore(),
+    };
+  },
+});
+</script>
+
+<style lang="scss" scoped>
+footer {
+  display: flex;
+  flex-direction: column;
+  gap: 0.25em;
+
+  text-align: center;
+  padding: 1em 1em 0 1em;
+}
+</style>