using System;
using System.Collections.Generic;
using System.Data.Common;
using System.IO;
using System.Linq;
using System.Threading;
using HarmonyLib;
using Photon.Pun;
using Steamworks;
using UnityEngine;
using UnityEngine.UIElements;
using UnityEngine.UIElements.Collections;
using WebSocketSharp;

namespace SpookTubeEX;


class SpookedUploader
{
    void UploadThread(MessageEventArgs evt, WebSocket ws, string path, string uuid, Action<string> setViewableLogText)
    {
        // Begin Upload
        byte[] byteArray = File.ReadAllBytes(path);

        int offset = 0;
        const int chunkSize = 512000;

        var expectedChunks = Math.Ceiling((double)byteArray.Length / chunkSize);

        while (byteArray.Length > offset * chunkSize)
        {
            byte[] buffer = byteArray.Skip(offset * chunkSize).Take(chunkSize).ToArray();
            offset += 1;

            ShowStatus(setViewableLogText, uuid, "stream", $"{offset}/{expectedChunks}");
            Plugin.Logger.LogInfo($"(UPLOAD {uuid}) - {offset}/{expectedChunks} (~{Math.Ceiling((double)buffer.Length / 1000)} KB)");

            List<byte> msgList = new List<byte>();

            msgList.AddRange(new byte[1] { 36 });
            msgList.AddRange(buffer);

            ws.Send(msgList.ToArray());
        }
    }

    void ShowStatus(Action<string> setViewableLogText, string uuid, string logType, string message = "")
    {
        if (uuid.Length == 0) uuid = "...";

        string msg = "";

        switch (logType) {
            case "error":
                msg = $"<color=red>{message}</color>\n<color=red><size=50%>CHECK CONSOLE FOR MORE DETAILS</size></color>";
                break;
            case "stream":
                msg = $"STREAMING VIDEO ({message})";
                break;
            case "complete":
                msg = $"<color=#2E8B57>UPLOAD COMPLETE</color>";
                break;
            default:
                msg = message;
                break;
        }

        setViewableLogText($"{msg}\n<mspace=0.13em><size=20%>UUID: {uuid.ToUpper()}</size></mspace>");
    }

    WebSocket ws;
    public void Upload(IPlayableVideo cameraRecording, Action<string> setViewableLogText, Action onUpload)
    {
        if (cameraRecording.TryGetVideoPath(out string path))
        {
            if (!File.Exists(path))
            {
                Modal.ShowError("Path Nonexistent", $"Can't find {path}");
                return;
            }

            ws = new WebSocket(Plugin.URL.Value);

            string viewableUrl = "";
            string uuid = "";

            ws.OnMessage += (sender, evt) =>
            {
                // Plugin.Logger.LogInfo("WS MESSAGE: " + evt.Data);

                if (evt.Data.StartsWith("url:")) // Set viewable URL for browser open
                {
                    viewableUrl = evt.Data.Substring(4);

                    Plugin.Logger.LogInfo($"Server reports origin as {viewableUrl}.");
                }

                if (evt.Data.StartsWith("uuid:")) // Set UUID
                {
                    uuid = evt.Data.Substring(5);

                    ShowStatus(setViewableLogText, uuid, "stream", "0/?");
                    Plugin.Logger.LogInfo($"Your video has been assigned the UUID {uuid}. Beginning upload...");

                    // Start upload thread
                    new Thread(new ThreadStart(() => UploadThread(evt, ws, path, uuid, setViewableLogText))).Start();
                }

                if (evt.Data.StartsWith("fin")) // On upload complete
                {
                    ShowStatus(setViewableLogText, uuid, "complete");
                    Plugin.Logger.LogInfo($"Upload Complete. Redirecting to {viewableUrl}...");

                    Application.OpenURL($"{viewableUrl}/#{uuid}");
                }

                if (evt.Data.StartsWith("us")) // On heuristics error
                {
                    ShowStatus(setViewableLogText, uuid, "error", "HEUR ERROR");
                    Plugin.Logger.LogError($"SpookTubeEX has experienced a heuristics error. Please contact ModMail at https://discord.gg/Gw2f86B2vC with this UUID in your ticket request: {uuid}\nThis is an automated service, so trolling will get your IP blocked from accessing anything with SpookTubeEX and your Discord account banned from the server. DO NOT SHARE THIS UUID WITH ANYONE!");
                }
            };

            ws.OnError += (sender, evt) =>
            {
                ShowStatus(setViewableLogText, uuid, "error", "WS ERROR");
                Plugin.Logger.LogError(evt.Message);
            };

            ws.OnOpen += (sender, evt) =>
            {
                ws.Send("persona:" + SteamFriends.GetPersonaName());
                ws.Send(SteamUser.GetSteamID().m_SteamID.ToString());
            };

            ws.OnClose += (sender, evt) => {
                onUpload();
            };

            Plugin.Logger.LogInfo($"Connecting to {ws.Url}...");

            ws.ConnectAsync();
        }
    }
}