1 files changed, 45 insertions, 0 deletions
diff --git a/src/lib/stores/prompt.js b/src/lib/stores/prompt.js
new file mode 100644
index 0000000..59df711
--- /dev/null
+++ b/src/lib/stores/prompt.js
@@ -0,0 +1,45 @@
+import { readable } from 'svelte/store';
+import { browser } from '$app/env';
+
+const internals = {
+  kDataPrefix: 'http://localhost:3000/data/',
+  kAdjectivesPath: '/adjectives.json',
+  kNounsPath: '/nouns.json',
+
+  async get(locale, path) {
+
+    const shortLocale = locale.split('-')[0];
+    const targetFile = internals.kDataPrefix + shortLocale + path;
+    const data = browser && sessionStorage.getItem(targetFile);
+
+    if (data) {
+      return JSON.parse(data);
+    }
+
+    let newData = await (await fetch(targetFile)).json();
+    browser && sessionStorage.setItem(targetFile, JSON.stringify(newData));
+
+    return newData;
+  },
+
+  random(list) {
+
+    return list[Math.floor(Math.random() * list.length)];
+  }
+};
+
+export const getPrompt = function (locale) {
+
+  return readable(null, function (set) {
+
+    (async function() {
+
+      const adjectives = await internals.get(locale, internals.kAdjectivesPath);
+      const nouns = await internals.get(locale, internals.kNounsPath);
+
+      set(`${internals.random(nouns)}, ${internals.random(nouns)}, ${internals.random(adjectives)}`);
+    })();
+
+    return function stop() {};
+  });
+};