import { type NextRequest } from "next/server";
import { prisma } from "@/lib/prisma";
import { ok, errorResponse, requireRole, parseJson, ApiError } from "@/lib/api";
import { UpdateTemplateSchema } 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 template = await prisma.operationTemplate.findUnique({
      where: { id },
      include: { machine: true },
    });
    if (!template) throw new ApiError(404, "not_found", "Template not found");
    return ok({ template });
  } 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, UpdateTemplateSchema);

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

    const updated = await prisma.operationTemplate.update({
      where: { id },
      data: {
        ...(body.name !== undefined ? { name: body.name } : {}),
        ...(body.machineId !== undefined ? { machineId: body.machineId } : {}),
        ...(body.defaultSettings !== undefined ? { defaultSettings: body.defaultSettings } : {}),
        ...(body.defaultInstructions !== undefined
          ? { defaultInstructions: body.defaultInstructions }
          : {}),
        ...(body.qcRequired !== undefined ? { qcRequired: body.qcRequired } : {}),
        ...(body.active !== undefined ? { active: body.active } : {}),
      },
    });
    await audit({
      actorId: actor.id,
      action: "update",
      entity: "OperationTemplate",
      entityId: id,
      before,
      after: updated,
      ipAddress: clientIp(req),
    });
    return ok({ template: 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.operationTemplate.findUnique({ where: { id } });
    if (!before) throw new ApiError(404, "not_found", "Template not found");

    const updated = await prisma.operationTemplate.update({
      where: { id },
      data: { active: false },
    });
    await audit({
      actorId: actor.id,
      action: "deactivate",
      entity: "OperationTemplate",
      entityId: id,
      before,
      after: updated,
      ipAddress: clientIp(req),
    });
    return ok({ ok: true });
  } catch (err) {
    return errorResponse(err);
  }
}