feat: add advanced context actions and optional translation

dialog/controller.js

@@ -0,0 +1,46 @@
+import { normalizeLanguage } from '../lib/settings.js';
+import { prepareAction } from '../lib/prepare-action.js';
+
+export function createDialogController({ payload, open, render, close }) {
+  let request = structuredClone(payload.request);
+  let state = { ...payload.preparation, busy: false };
+  let cancelled = false;
+  const show = () => render({ ...state });
+  show();
+  return {
+    cancel() {
+      if (state.busy || cancelled) return;
+      cancelled = true;
+      request = null;
+      close();
+    },
+    async submit(language) {
+      if (cancelled || state.busy || state.kind === 'error') return;
+      if (state.kind === 'language') {
+        const normalized = normalizeLanguage(language);
+        if (!normalized) {
+          state.message = 'Enter a language using up to 100 characters.';
+          show(); return;
+        }
+        request.language = normalized;
+        state = { ...prepareAction(request), busy: false };
+        show();
+        if (state.kind !== 'ready') return;
+      }
+      if (!['ready', 'shortened'].includes(state.kind)) return;
+      state.busy = true;
+      state.message = '';
+      show();
+      try {
+        await open(state.url, request.settings.openIn);
+        cancelled = true;
+        request = null;
+        close();
+      } catch {
+        state.busy = false;
+        state.message = 'Could not open ChatGPT. Please try again or cancel.';
+        show();
+      }
+    },
+  };
+}