import { NextRequest, NextResponse } from "next/server";
import { readdirSync, statSync, unlinkSync, existsSync } from "fs";
import { join } from "path";
import { execSync, exec } from "child_process";
import { auth } from "@/lib/auth";

export const dynamic = "force-dynamic";

const BACKUP_DIR = "/home/minecraft/server/backups";
const BACKUP_SCRIPT = "/home/minecraft/dashboard/scripts/backup-world.sh";

export async function GET() {
  const session = await auth();
  if (!session) {
    return NextResponse.json({ error: "Unauthorized" }, { status: 403 });
  }

  if (!existsSync(BACKUP_DIR)) {
    return NextResponse.json([]);
  }

  const files = readdirSync(BACKUP_DIR)
    .filter((f) => f.endsWith(".tar.gz"))
    .map((f) => {
      const stat = statSync(join(BACKUP_DIR, f));
      return {
        name: f,
        size: (stat.size / 1024 / 1024).toFixed(1) + " MB",
        sizeBytes: stat.size,
        createdAt: stat.mtime.toISOString(),
      };
    })
    .sort((a, b) => new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime());

  return NextResponse.json(files);
}

// Create backup now
export async function POST() {
  const session = await auth();
  if (!session) {
    return NextResponse.json({ error: "Unauthorized" }, { status: 403 });
  }

  try {
    execSync(`bash ${BACKUP_SCRIPT}`, { encoding: "utf8", timeout: 60000 });
    return NextResponse.json({ ok: true, message: "Backup created" });
  } catch (e) {
    return NextResponse.json(
      { error: (e as Error).message },
      { status: 500 }
    );
  }
}

// Delete backup
export async function DELETE(req: NextRequest) {
  const session = await auth();
  if (!session) {
    return NextResponse.json({ error: "Unauthorized" }, { status: 403 });
  }

  const { name } = await req.json();
  if (!name || !name.endsWith(".tar.gz") || name.includes("/") || name.includes("..")) {
    return NextResponse.json({ error: "Invalid name" }, { status: 400 });
  }

  const filePath = join(BACKUP_DIR, name);
  if (!existsSync(filePath)) {
    return NextResponse.json({ error: "Backup not found" }, { status: 404 });
  }

  unlinkSync(filePath);
  return NextResponse.json({ ok: true });
}