import { withUser, parseBody, json } from "@/lib/api";
import { LIMITS } from "@/lib/rate-limit";
import { chatAdoptSchema } from "@/lib/chat/schemas";
import { adoptMessage, toPublicMessage } from "@/lib/chat/service";
import { toPublicConversation } from "@/lib/conversations/service";

export const dynamic = "force-dynamic";

/**
 * POST /api/chat/adopt — "Continue with this model" from an inline Compare / Arena run.
 * Body: { conversationId?, modelKey, arenaResponseId? | content, userText?, systemPrompt?, settings?, projectId? }
 * → 201 { conversation, userMessage | null, message, isNewConversation }
 */
export const POST = withUser(
  async (ctx) => {
    const input = await parseBody(ctx.req, chatAdoptSchema, 1_000_000);
    const res = await adoptMessage({ userId: ctx.user.id, requestId: ctx.requestId, ip: ctx.ip }, input);
    return json({ conversation: toPublicConversation(res.conversation), userMessage: res.userMessage ? toPublicMessage(res.userMessage) : null, message: toPublicMessage(res.message), isNewConversation: res.isNewConversation }, { status: 201 });
  },
  { limit: { ...LIMITS.chat, key: "chat-adopt" } },
);