import { getCloudViewer } from "@/app/cloud-auth";
import { beginRelayMigration } from "@/db/relay-migrations";
import { apiError, readJsonMutation } from "../../respond";

export async function POST(request: Request) {
  try {
    const viewer = await getCloudViewer();
    if (!viewer) {
      return Response.json(
        { error_code: "authentication_required", message: "请先登录", retryable: false },
        { status: 401 },
      );
    }
    if (!viewer.isAdmin) {
      return Response.json(
        { error_code: "forbidden", message: "没有 Relay 迁移权限", retryable: false },
        { status: 403 },
      );
    }
    const payload = await readJsonMutation<{
      tenant_id?: string;
      target_node_id?: string;
      reason?: string;
      idempotency_key?: string;
    }>(request);
    const migration = await beginRelayMigration({
      tenantId: payload.tenant_id ?? "",
      targetNodeId: payload.target_node_id ?? "",
      actorId: viewer.userId,
      reason: payload.reason ?? "",
      idempotencyKey: payload.idempotency_key ?? "",
    });
    return Response.json(
      { migration_id: migration.id, state: migration.state, started_at: migration.started_at },
      { status: 202, headers: { "cache-control": "no-store" } },
    );
  } catch (error) {
    return apiError(error);
  }
}