Show promo messages for relevant AI errors (#216)

src/components/chat/ChatErrorBox.tsx

+import { IpcClient } from "@/ipc/ipc_client";
+import { X } from "lucide-react";
+export function ChatErrorBox({
+  onDismiss,
+  error,
+  isDyadProEnabled,
+}: {
+  onDismiss: () => void;
+  error: string;
+  isDyadProEnabled: boolean;
+}) {
+  if (error.includes("doesn't have a free quota tier")) {
+    return (
+      <ChatErrorContainer onDismiss={onDismiss}>
+        {error}
+        <span className="ml-1">
+          <ExternalLink href="https://dyad.sh/pro">
+            Access with Dyad Pro.
+          </ExternalLink>
+        </span>
+      </ChatErrorContainer>
+    );
+  }
+
+  // Important, this needs to come after the "free quota tier" check
+  // because it also includes this URL in the error message
+  if (error.includes("https://ai.google.dev/gemini-api/docs/rate-limits")) {
+    return (
+      <ChatErrorContainer onDismiss={onDismiss}>
+        {error}
+        <span className="ml-1">
+          <ExternalLink href="https://dyad.sh/pro">
+            Upgrade to Dyad Pro.
+          </ExternalLink>
+        </span>
+      </ChatErrorContainer>
+    );
+  }
+
+  if (error.includes("LiteLLM Virtual Key expected")) {
+    return (
+      <ChatInfoContainer onDismiss={onDismiss}>
+        <span>
+          Looks like you don't have a valid Dyad Pro key.{" "}
+          <ExternalLink href="https://dyad.sh/pro">
+            Upgrade to Dyad Pro
+          </ExternalLink>{" "}
+          today.
+        </span>
+      </ChatInfoContainer>
+    );
+  }
+  if (isDyadProEnabled && error.includes("ExceededBudget:")) {
+    return (
+      <ChatInfoContainer onDismiss={onDismiss}>
+        <span>
+          You have used all of your Dyad AI credits this month.{" "}
+          <ExternalLink href="https://academy.dyad.sh/subscription">
+            Upgrade to Dyad Max
+          </ExternalLink>{" "}
+          and get more AI credits
+        </span>
+      </ChatInfoContainer>
+    );
+  }
+  return <ChatErrorContainer onDismiss={onDismiss}>{error}</ChatErrorContainer>;
+}
+
+function ExternalLink({
+  href,
+  children,
+}: {
+  href: string;
+  children: React.ReactNode;
+}) {
+  return (
+    <a
+      className="underline cursor-pointer text-blue-500 hover:text-blue-700"
+      onClick={() => IpcClient.getInstance().openExternalUrl(href)}
+    >
+      {children}
+    </a>
+  );
+}
+
+function ChatErrorContainer({
+  onDismiss,
+  children,
+}: {
+  onDismiss: () => void;
+  children: React.ReactNode;
+}) {
+  return (
+    <div className="relative mt-2 bg-red-50 border border-red-200 rounded-md shadow-sm p-2 mx-4">
+      <button
+        onClick={onDismiss}
+        className="absolute top-1 left-1 p-1 hover:bg-red-100 rounded"
+      >
+        <X size={14} className="text-red-500" />
+      </button>
+      <div className="px-6 py-1 text-sm">
+        <div className="text-red-700 text-wrap">{children}</div>
+      </div>
+    </div>
+  );
+}
+
+function ChatInfoContainer({
+  onDismiss,
+  children,
+}: {
+  onDismiss: () => void;
+  children: React.ReactNode;
+}) {
+  return (
+    <div className="relative mt-2 bg-sky-50 border border-sky-200 rounded-md shadow-sm p-2 mx-4">
+      <button
+        onClick={onDismiss}
+        className="absolute top-1 left-1 p-1 hover:bg-sky-100 rounded"
+      >
+        <X size={14} className="text-sky-600" />
+      </button>
+      <div className="px-6 py-1 text-sm">
+        <div className="text-sky-800 text-wrap">{children}</div>
+      </div>
+    </div>
+  );
+}

src/components/chat/ChatInput.tsx

@@ -60,6 +60,7 @@ import { AttachmentsList } from "./AttachmentsList";
 import { DragDropOverlay } from "./DragDropOverlay";
 import { showError, showExtraFilesToast } from "@/lib/toast";
 import { ChatInputControls } from "../ChatInputControls";
+import { ChatErrorBox } from "./ChatErrorBox";
 const showTokenBarAtom = atom(false);
 
 export function ChatInput({ chatId }: { chatId?: number }) {
@@ -235,17 +236,11 @@ export function ChatInput({ chatId }: { chatId?: number }) {
   return (
     <>
       {error && showError && (
-        <div className="relative mt-2 bg-red-50 border border-red-200 rounded-md shadow-sm p-2">
-          <button
-            onClick={dismissError}
-            className="absolute top-1 left-1 p-1 hover:bg-red-100 rounded"
-          >
-            <X size={14} className="text-red-500" />
-          </button>
-          <div className="px-6 py-1 text-sm">
-            <div className="text-red-700 text-wrap">{error}</div>
-          </div>
-        </div>
+        <ChatErrorBox
+          onDismiss={dismissError}
+          error={error}
+          isDyadProEnabled={settings.enableDyadPro ?? false}
+        />
       )}
       {/* Display loading or error state for proposal */}
       {isProposalLoading && (