using System;
using System.Collections.Generic;
using System.Linq;
using Dalamud.Game.Text.SeStringHandling;
using Dalamud.Game.Text.SeStringHandling.Payloads;

namespace KamiLib.ChatCommands;

internal record ChatLinkPayload(uint CommandID, uint Type, DalamudLinkPayload Payload);

public class ChatPayloadManager : IDisposable
{
    private static ChatPayloadManager? _instance;
    public static ChatPayloadManager Instance => _instance ??= new ChatPayloadManager();

    private List<ChatLinkPayload> ChatLinkPayloads { get; } = new();

    public static void Cleanup()
    {
        _instance?.Dispose();
    }
    
    public void Dispose()
    {
        foreach (var payload in ChatLinkPayloads)
        {
            Service.PluginInterface.RemoveChatLinkHandler( payload.Type + 1000 );
        }
    }

    public DalamudLinkPayload AddChatLink(Enum type, Action<uint, SeString> payloadAction) => AddChatLink(Convert.ToUInt32(type), payloadAction);

    private DalamudLinkPayload AddChatLink(uint type, Action<uint, SeString> payloadAction)
    {
        // If the payload is already registered
        var payload = ChatLinkPayloads.FirstOrDefault(linkPayload => linkPayload.CommandID == type + 1000)?.Payload;
        if (payload != null) return payload;

        // else
        Service.PluginInterface.RemoveChatLinkHandler(type + 1000);
        payload = Service.PluginInterface.AddChatLinkHandler(type + 1000, payloadAction);

        ChatLinkPayloads.Add(new ChatLinkPayload(type + 1000, type, payload));

        return payload;
    }
}