import { z } from "zod";
import { withUser, parseBody, json } from "@/lib/api";
import { listConversations, createConversation } from "@/lib/conversations/service";
import { isProviderId } from "@/lib/ai/core/types";

export const dynamic = "force-dynamic";

export const GET = withUser(async ({ req, user }) => {
  const url = new URL(req.url);
  const p = url.searchParams;
  const provider = p.get("provider");
  const res = await listConversations(user.id, {
    q: p.get("q") ?? undefined,
    provider: provider && isProviderId(provider) ? provider : undefined,
    modelKey: p.get("model") ?? undefined,
    folderId: p.get("folder") ?? undefined,
    projectId: p.get("projectId") ?? undefined,
    archived: p.get("archived") === "1",
    pinned: p.get("pinned") === "1" ? true : undefined,
    since: p.get("since") ? new Date(p.get("since")!) : undefined,
    until: p.get("until") ? new Date(p.get("until")!) : undefined,
    limit: p.get("limit") ? Number(p.get("limit")) : undefined,
    cursor: p.get("cursor") ?? undefined,
  });
  return json(res);
});

const createSchema = z.object({
  title: z.string().max(200).optional(),
  modelKey: z.string().max(120).nullable().optional(),
  systemPrompt: z.string().max(50_000).nullable().optional(),
  folderId: z.string().max(64).nullable().optional(),
  projectId: z.string().max(64).nullable().optional(),
  settings: z.record(z.string(), z.unknown()).optional(),
});

export const POST = withUser(async ({ req, user }) => {
  const body = await parseBody(req, createSchema);
  const c = await createConversation(user.id, body);
  return json({ conversation: c }, { status: 201 });
});