import { withUser, parseBody, json } from "@/lib/api";
import { getProjectDetail, updateProject, deleteProject, moveConversations, listUnassignedConversations } from "@/lib/projects/service";
import { projectBodySchema, projectActionSchema } from "@/lib/projects/schemas";

export const dynamic = "force-dynamic";

type P = { id: string };

/** GET /api/projects/:id → { project, conversations, files, prompts, stats } ; `?unassigned=1` → { conversations } outside any project. */
export const GET = withUser<P>(async ({ req, user }, { id }) => {
  if (new URL(req.url).searchParams.get("unassigned") === "1") return json({ conversations: await listUnassignedConversations(user.id) });
  return json(await getProjectDetail(user.id, id));
});

/** PATCH /api/projects/:id (any subset of the create body) → { project } */
export const PATCH = withUser<P>(async ({ req, user }, { id }) => {
  const body = await parseBody(req, projectBodySchema.partial());
  return json({ project: await updateProject(user.id, id, body) });
});

/** POST /api/projects/:id { action: "add-conversations" | "remove-conversations", conversationIds } → { moved } */
export const POST = withUser<P>(async ({ req, user }, { id }) => {
  const body = await parseBody(req, projectActionSchema);
  const moved = await moveConversations(user.id, body.conversationIds, body.action === "add-conversations" ? id : null);
  return json({ moved });
});

/** DELETE /api/projects/:id — conversations are kept (project_id → null); files cascade; prompts are detached. */
export const DELETE = withUser<P>(async ({ user }, { id }) => {
  await deleteProject(user.id, id);
  return json({ ok: true });
});