import { type NextRequest } from "next/server";
import { ok, errorResponse, requireRole, parseJson } from "@/lib/api";
import { DuplicateAssemblySchema } from "@/lib/schemas";
import { audit } from "@/lib/audit";
import { clientIp } from "@/lib/request";
import { duplicateAssembly } from "@/lib/duplicate";

/**
 * Admin-only. Clone an Assembly (plus every child Part, plus every
 * Operation when includeOperations is true) into the same project under a
 * new `code`. Useful when a new project needs the same assembly with minor
 * tweaks — duplicate then edit rather than rebuilding from scratch.
 */
export async function POST(req: NextRequest, ctx: { params: Promise<{ id: string }> }) {
  try {
    const actor = await requireRole("admin");
    const { id } = await ctx.params;
    const body = await parseJson(req, DuplicateAssemblySchema);

    const result = await duplicateAssembly({
      sourceAssemblyId: id,
      code: body.code,
      name: body.name,
      includeOperations: body.includeOperations ?? true,
    });

    await audit({
      actorId: actor.id,
      action: "duplicate",
      entity: "Assembly",
      entityId: result.id,
      after: { sourceAssemblyId: id, ...result },
      ipAddress: clientIp(req),
    });
    return ok(
      {
        assembly: { id: result.id },
        partsCopied: result.partsCopied,
        operationsCopied: result.operationsCopied,
      },
      { status: 201 },
    );
  } catch (err) {
    return errorResponse(err);
  }
}