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2026-07-13 12:58:18 +08:00

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export type ChatStarterPrompt = {
title: string;
message: string;
};
/** Four starter prompts: three bounded build demos + one Excalidraw test. Override via `NEXT_PUBLIC_CHAT_STARTER_PROMPTS`. */
const DEFAULT_PROMPTS: ChatStarterPrompt[] = [
{ title: "Tic tac toe", message: "Create a tic tac toe game" },
{
title: "Tip calculator",
message:
"Create a single-widget tip calculator: bill amount, tip % presets, split between people, and show tip + total per person. Use only React and the existing template CSS—no new npm packages.",
},
{
title: "Dice roller",
message:
"Create a dice roller widget: choose number of dice (16) and sides (e.g. 4, 6, 8, 10, 12, 20), roll button, and show each die result plus the sum. Use only React and the existing template—no chart or diagram libraries.",
},
{
title: "Try Excalidraw",
message:
"Use the Excalidraw MCP server to create a simple flowchart showing: Start → Process → Decision (yes/no branches) → End. Show me the result.",
},
];
/**
* Chat suggestion chips for v2 CopilotChat (see `ChatSuggestions.tsx`).
* Override with `NEXT_PUBLIC_CHAT_STARTER_PROMPTS` — JSON array of `{ "title", "message" }`.
*/
export function getChatStarterPrompts(): ChatStarterPrompt[] {
const raw = process.env.NEXT_PUBLIC_CHAT_STARTER_PROMPTS;
if (typeof raw !== "string" || !raw.trim()) {
return DEFAULT_PROMPTS;
}
try {
const parsed = JSON.parse(raw) as unknown;
if (!Array.isArray(parsed) || parsed.length === 0) {
return DEFAULT_PROMPTS;
}
const out: ChatStarterPrompt[] = [];
for (const item of parsed) {
if (!item || typeof item !== "object") continue;
const rec = item as Record<string, unknown>;
const title = rec.title;
const message = rec.message;
if (typeof title !== "string" || typeof message !== "string") continue;
const t = title.trim();
const m = message.trim();
if (!t || !m) continue;
out.push({ title: t, message: m });
}
return dedupeStarterPrompts(out.length > 0 ? out : DEFAULT_PROMPTS);
} catch {
return DEFAULT_PROMPTS;
}
}
/** Drop duplicate title+message pairs (e.g. mis-merged env) so the UI does not repeat chips. */
function dedupeStarterPrompts(
prompts: ChatStarterPrompt[],
): ChatStarterPrompt[] {
const seen = new Set<string>();
const result: ChatStarterPrompt[] = [];
for (const p of prompts) {
const key = `${p.title.trim()}\n${p.message.trim()}`;
if (seen.has(key)) continue;
seen.add(key);
result.push(p);
}
return result;
}