MapDownloaderPlugin.cs

using System;
using System.IO;
using System.Net;
using BepInEx;
using UnityEngine;

namespace MapDownloader
{
    [BepInPlugin("com.onwardmodcommunity.mapdownloader", "Map Downloader", "1.0.0")]
    public class MapDownloaderPlugin : BaseUnityPlugin
    {
        public static BepInEx.Logging.ManualLogSource Log { get; private set; }

        private const string RemoteManifestUrl =
            "https://pub-6f026005d71a45f583e1bbe8f75cc62f.r2.dev/map_list.json";

        private static readonly string MapsDestinationPath = Path.GetFullPath(Path.Combine(
            Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
            @"..\LocalLow\Downpour Interactive\Onward\CustomContent"));

        private MapDownloader downloader;

        private void Awake()
        {
            Log = Logger;
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
            Logger.LogInfo("MapDownloader plugin loaded.");
            DontDestroyOnLoad(gameObject);

            downloader = new MapDownloader(
                remoteManifestUrl:  RemoteManifestUrl,
                mapsDestinationPath: MapsDestinationPath,
                onComplete:         OnDownloadComplete,
                logger:             Logger
            );

            downloader.StartDownload();
        }

        private void OnDownloadComplete(MapDownloadResult result)
        {
            switch (result.Status)
            {
                case MapDownloadStatus.AllCurrent:
                    Logger.LogInfo($"All maps are up to date. ({result.SkippedCount} checked)");
                    break;

                case MapDownloadStatus.DownloadedSuccessfully:
                    Logger.LogInfo($"Maps downloaded successfully! ({result.DownloadedCount} downloaded, {result.SkippedCount} already current)");
                    break;

                case MapDownloadStatus.CompletedWithErrors:
                    Logger.LogWarning(
                        $"Map download finished with {result.FailedMaps.Count} error(s). " +
                        $"{result.DownloadedCount} downloaded, {result.SkippedCount} already current. " +
                        $"Failed: {string.Join(", ", result.FailedMaps)}"
                    );
                    break;
            }
        }
    }
}