using System.Collections.Generic;
using System.Linq;
using System.Text;

using Dalamud.Configuration;
using Dalamud.Configuration.Internal;
using Dalamud.Interface.Internal;
using Dalamud.Plugin.Internal;
using Dalamud.Plugin.Internal.Types.Manifest;
using Dalamud.Utility;
using Newtonsoft.Json;
using Serilog;

namespace Dalamud.Support;

/// <summary>
/// Class responsible for printing troubleshooting information to the log.
/// </summary>
public static class Troubleshooting
{
    /// <summary>
    /// Gets the most recent exception to occur.
    /// </summary>
    public static Exception? LastException { get; private set; }

    /// <summary>
    /// Log the last exception in a parseable format to serilog.
    /// </summary>
    /// <param name="exception">The exception to log.</param>
    /// <param name="context">Additional context.</param>
    public static void LogException(Exception exception, string context)
    {
        LastException = exception;

        var fixedContext = context?.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries).FirstOrDefault();

        try
        {
            var payload = new ExceptionPayload
            {
                Context = fixedContext,
                When = DateTime.Now,
                Info = exception.ToString(),
            };

            var encodedPayload = Convert.ToBase64String(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(payload)));
            Log.Information($"LASTEXCEPTION:{encodedPayload}");
        }
        catch (Exception ex)
        {
            Log.Error(ex, "Could not print exception.");
        }
    }

    /// <summary>
    /// Log troubleshooting information in a parseable format to Serilog.
    /// </summary>
    internal static void LogTroubleshooting()
    {
        var startInfo = Service<Dalamud>.Get().StartInfo;
        var configuration = Service<DalamudConfiguration>.Get();
        var interfaceManager = Service<InterfaceManager>.GetNullable();
        var pluginManager = Service<PluginManager>.GetNullable();

        try
        {
            var payload = new TroubleshootingPayload
            {
                LoadedPlugins = pluginManager?.InstalledPlugins?.Select(x => x.Manifest as LocalPluginManifest)?.OrderByDescending(x => x.InternalName).ToArray(),
                PluginStates = pluginManager?.InstalledPlugins?.Where(x => !x.IsDev).ToDictionary(x => x.Manifest.InternalName, x => x.IsBanned ? "Banned" : x.State.ToString()),
                EverStartedLoadingPlugins = pluginManager?.InstalledPlugins.Where(x => x.HasEverStartedLoad).Select(x => x.InternalName).ToList(),
                DalamudVersion = Util.AssemblyVersion,
                DalamudGitHash = Util.GetGitHash(),
                GameVersion = startInfo.GameVersion?.ToString() ?? "Unknown",
                Language = startInfo.Language.ToString(),
                BetaKey = configuration.DalamudBetaKey,
                DoPluginTest = configuration.DoPluginTest,
                LoadAllApiLevels = pluginManager?.LoadAllApiLevels == true,
                InterfaceLoaded = interfaceManager?.IsReady ?? false,
                HasThirdRepo = configuration.ThirdRepoList is { Count: > 0 },
                ForcedMinHook = EnvironmentConfiguration.DalamudForceMinHook,
            };

            var encodedPayload = Convert.ToBase64String(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(payload)));
            Log.Information($"TROUBLESHOOTING:{encodedPayload}");
        }
        catch (Exception ex)
        {
            Log.Error(ex, "Could not print troubleshooting.");
        }
    }

    private class ExceptionPayload
    {
        public DateTime When { get; set; }

        public string Info { get; set; }

        public string? Context { get; set; }
    }

    private class TroubleshootingPayload
    {
        public LocalPluginManifest[]? LoadedPlugins { get; set; }

        public Dictionary<string, string>? PluginStates { get; set; }

        public List<string>? EverStartedLoadingPlugins { get; set; }

        public string DalamudVersion { get; set; }

        public string DalamudGitHash { get; set; }

        public string GameVersion { get; set; }

        public string Language { get; set; }

        public bool DoDalamudTest => false;

        public string? BetaKey { get; set; }

        public bool DoPluginTest { get; set; }

        public bool LoadAllApiLevels { get; set; }

        public bool InterfaceLoaded { get; set; }

        public bool ForcedMinHook { get; set; }

        public List<ThirdPartyRepoSettings> ThirdRepo => new();

        public bool HasThirdRepo { get; set; }
    }
}