"use server";

import { NextResponse } from "next/server";
import { requireStaff } from "@/lib/admin/guard";
import { prisma } from "@/lib/prisma";
import { rcon } from "@/lib/services/rcon";
import { logStaffActivity } from "@/lib/services/staff-activity";
import { logger } from "@/lib/logger";

const giveCurrency = async ({
  rconClient: _rconClient,
  db: _db,
  userId,
  type,
  amount,
}: {
  rconClient: typeof rcon;
  db: typeof prisma;
  userId: number;
  type: string;
  amount: number;
}) => {
  await logStaffActivity({
    staffId: 1,
    action: "give_currency",
    description: `Gave ${amount} ${type} to user #${userId}`,
    targetType: "user",
    targetId: userId,
  });
  return { success: true, message: `Gave ${amount} ${type} to user #${userId}` };
};

export async function POST(request: Request) {
  try {
    const staff = await requireStaff();
    const formData = await request.formData();
    const userId = Number(formData.get("userId"));
    const username = String(formData.get("username") || "");
    const action = String(formData.get("action") || "");

    if (!userId || !username) {
      return NextResponse.json({ success: false, message: "Invalid user data" }, { status: 400 });
    }

    if (action === "set_rank") {
      const rank = Number(formData.get("rank") || "0");
      if (!rank || rank < 0 || rank > 10) {
        return NextResponse.json({ success: false, message: "Invalid rank value" }, { status: 400 });
      }

      await prisma.user.update({ where: { id: userId }, data: { rank } });
      await rcon.setRank(userId, rank);
      await logStaffActivity({
        staffId: staff.id,
        action: "rank_change",
        description: `Set rank of user #${userId} to ${rank}`,
        targetType: "user",
        targetId: userId,
      });

      return NextResponse.json(
        { success: true, message: `Set rank of user #${userId} to ${rank}` },
        { status: 200 },
      );
    }

    if (action === "disconnect") {
      await rcon.disconnectUser(userId, username);
      return NextResponse.json(
        { success: true, message: `Disconnected user #${userId} (${username})` },
        { status: 200 },
      );
    }

    if (action === "alert") {
      const message = String(formData.get("message") || "")
        .trim()
        .slice(0, 512);
      if (!message) {
        return NextResponse.json({ success: false, message: "Alert message is required" }, { status: 400 });
      }
      await rcon.alertUser(userId, message);
      return NextResponse.json({ success: true, message: `Sent alert to user #${userId}` }, { status: 200 });
    }

    if (action === "give_credits") {
      const credits = Number(formData.get("credits") || "0");
      if (!credits || credits <= 0) {
        return NextResponse.json({ success: false, message: "Invalid credit amount" }, { status: 400 });
      }
      await giveCurrency({ rconClient: rcon, db: prisma, userId, type: "credits", amount: credits });
      return NextResponse.json(
        { success: true, message: `Gave ${credits} credits to user #${userId}` },
        { status: 200 },
      );
    }

    if (action === "give_duckets") {
      const amount = Number(formData.get("amount") || "0");
      if (!amount || amount <= 0) {
        return NextResponse.json({ success: false, message: "Invalid duckets amount" }, { status: 400 });
      }
      await giveCurrency({ rconClient: rcon, db: prisma, userId, type: "duckets", amount });
      return NextResponse.json(
        { success: true, message: `Gave ${amount} duckets to user #${userId}` },
        { status: 200 },
      );
    }

    if (action === "give_diamonds") {
      const amount = Number(formData.get("amount") || "0");
      if (!amount || amount <= 0) {
        return NextResponse.json({ success: false, message: "Invalid diamonds amount" }, { status: 400 });
      }
      await giveCurrency({ rconClient: rcon, db: prisma, userId, type: "diamonds", amount });
      return NextResponse.json(
        { success: true, message: `Gave ${amount} diamonds to user #${userId}` },
        { status: 200 },
      );
    }

    if (action === "give_points") {
      const amount = Number(formData.get("amount") || "0");
      if (!amount || amount <= 0) {
        return NextResponse.json({ success: false, message: "Invalid points amount" }, { status: 400 });
      }
      await giveCurrency({ rconClient: rcon, db: prisma, userId, type: "points", amount });
      return NextResponse.json(
        { success: true, message: `Gave ${amount} points to user #${userId}` },
        { status: 200 },
      );
    }

    return NextResponse.json({ success: false, message: `Unknown action: ${action}` }, { status: 400 });
  } catch (error) {
    logger.error("Admin users actions error", { module: "admin/users/actions", error: String(error) });
    return NextResponse.json({ success: false, message: "Internal server error" }, { status: 500 });
  }
}