"use server";

import config from "@payload-config";
import { getPayload } from "payload";
import type { AttendanceResponse } from "@/lib/attendance";
import { setMissionAttendance as setAttendance } from "@/lib/attendance";

export interface ActionResult<T = undefined> {
  success: boolean;
  error?: string;
  data?: T;
}

async function authenticate() {
  const payloadConfig = await config;
  const payload = await getPayload({ config: payloadConfig });
  const { headers } = await import("next/headers");
  const hdrs = await headers();
  const { user } = await payload.auth({ headers: hdrs, canSetHeaders: false });

  if (!user) {
    throw new Error("Unauthorized");
  }

  return { payload, user };
}

export async function setMissionAttendance(input: {
  missionId: number;
  response: AttendanceResponse;
}): Promise<ActionResult> {
  try {
    const { payload, user } = await authenticate();
    const userId = user.id as number;

    await setAttendance(payload, {
      missionId: input.missionId,
      userId,
      response: input.response,
    });

    return { success: true };
  } catch (error) {
    const message = error instanceof Error ? error.message : "Unknown error";
    return message === "Unauthorized"
      ? { success: false, error: "You must be logged in." }
      : { success: false, error: message };
  }
}