import { type NextRequest } from "next/server";
import { prisma } from "@/lib/prisma";
import { ok, errorResponse, requireRole, parseJson, ApiError } from "@/lib/api";
import { UpdatePartSchema } from "@/lib/schemas";
import { audit } from "@/lib/audit";
import { clientIp } from "@/lib/request";

export async function GET(_req: NextRequest, ctx: { params: Promise<{ id: string }> }) {
  try {
    await requireRole("admin");
    const { id } = await ctx.params;
    const part = await prisma.part.findUnique({
      where: { id },
      include: {
        assembly: {
          include: { project: { select: { id: true, code: true, name: true } } },
        },
        stepFile: true,
        drawingFile: true,
        cutFile: true,
        operations: {
          orderBy: { sequence: "asc" },
          include: { machine: { select: { id: true, name: true } } },
        },
      },
    });
    if (!part) throw new ApiError(404, "not_found", "Part not found");
    return ok({ part });
  } catch (err) {
    return errorResponse(err);
  }
}

export async function PATCH(req: NextRequest, ctx: { params: Promise<{ id: string }> }) {
  try {
    const actor = await requireRole("admin");
    const { id } = await ctx.params;
    const body = await parseJson(req, UpdatePartSchema);

    const before = await prisma.part.findUnique({ where: { id } });
    if (!before) throw new ApiError(404, "not_found", "Part not found");

    const updated = await prisma.part.update({
      where: { id },
      data: {
        ...(body.code !== undefined ? { code: body.code } : {}),
        ...(body.name !== undefined ? { name: body.name } : {}),
        ...(body.material !== undefined ? { material: body.material } : {}),
        ...(body.qty !== undefined ? { qty: body.qty } : {}),
        ...(body.notes !== undefined ? { notes: body.notes } : {}),
        ...(body.stepFileId !== undefined ? { stepFileId: body.stepFileId } : {}),
        ...(body.drawingFileId !== undefined ? { drawingFileId: body.drawingFileId } : {}),
        ...(body.cutFileId !== undefined ? { cutFileId: body.cutFileId } : {}),
      },
    });
    await audit({
      actorId: actor.id,
      action: "update",
      entity: "Part",
      entityId: id,
      before,
      after: updated,
      ipAddress: clientIp(req),
    });
    return ok({ part: updated });
  } catch (err) {
    return errorResponse(err);
  }
}

export async function DELETE(req: NextRequest, ctx: { params: Promise<{ id: string }> }) {
  try {
    const actor = await requireRole("admin");
    const { id } = await ctx.params;
    const before = await prisma.part.findUnique({ where: { id } });
    if (!before) throw new ApiError(404, "not_found", "Part not found");
    await prisma.part.delete({ where: { id } });
    await audit({
      actorId: actor.id,
      action: "delete",
      entity: "Part",
      entityId: id,
      before,
      ipAddress: clientIp(req),
    });
    return ok({ ok: true });
  } catch (err) {
    return errorResponse(err);
  }
}