using System;
using System.Collections.Generic;
using System.Reflection;
using JetBrains.Annotations;
using Newtonsoft.Json;
using Oxide.Core.Plugins;
using ProtoBuf;
using UnityEngine;

namespace Oxide.Plugins;

[Info("Ping Location", "Ilovepatatos", "1.0.4")]
[Description("Pings location for teammates using the middle mouse button call of duty style.")]
public class PingLocation : RustPlugin
{
    private static readonly MethodInfo s_applyPingStyle = typeof(BasePlayer).GetMethod("ApplyPingStyle", BindingFlags.Instance | BindingFlags.NonPublic);
    private Configuration _internalConfigs;

#region Configs

    [Serializable]
    private class Configuration
    {
        [JsonProperty("Use perms")]
        public string UsePerms = "pinglocation.use";

        [JsonProperty("Ping duration")]
        public float Duration = 2f;

        [JsonProperty("Max ping distance")]
        public float MaxDistance = 300;
    }

    protected override void LoadConfig()
    {
        base.LoadConfig();

        try
        {
            _internalConfigs = Config.ReadObject<Configuration>();
            SaveConfig();
        }
        catch (Exception ex)
        {
            LoadDefaultConfig();
            Puts($"The configuration file seems to be corrupted! Loading default configuration...");
            Puts(ex.Message);
        }
    }

    protected override void LoadDefaultConfig()
    {
        _internalConfigs = new Configuration();
    }

    protected override void SaveConfig()
    {
        Config.WriteObject(_internalConfigs);
    }

#endregion

#region Hooks

    [UsedImplicitly]
    [HookMethod(nameof(Init))]
    private void Init()
    {
        permission.RegisterPermission(_internalConfigs.UsePerms, this);
    }

    [UsedImplicitly]
    [HookMethod(nameof(OnPlayerInput))]
    private void OnPlayerInput(BasePlayer player, InputState input)
    {
        if (input.WasJustPressed(BUTTON.FIRE_THIRD))
            TryPing(player);
    }

#endregion

#region Methods

    private void TryPing(BasePlayer player)
    {
        Configuration configs = _internalConfigs;
        if (!permission.UserHasPermission(player.UserIDString, configs.UsePerms))
            return;

        const int layer = (1 << (int)Rust.Layer.Player_Server) | (1 << (int)Rust.Layer.World) | (1 << (int)Rust.Layer.Construction) |
                          (1 << (int)Rust.Layer.Terrain) | (1 << (int)Rust.Layer.Tree);

        if (!Cast(player, out Vector3 pos, configs.MaxDistance, layer))
            return;

        player.State.pings ??= new List<MapNote>();

        List<MapNote> pings = player.State.pings;
        if (pings.Count >= ConVar.Server.maximumPings)
            pings.RemoveAt(0);

        var note = Facepunch.Pool.Get<MapNote>();
        note.isPing = true;
        note.worldPosition = pos;
        note.timeRemaining = configs.Duration;
        note.totalDuration = configs.Duration;

        s_applyPingStyle?.Invoke(player, new object[] { note, BasePlayer.PingType.Hostile });
        pings.Add(note);

        player.DirtyPlayerState();
        player.SendPingsToClient();
        player.TeamUpdate(true);
    }

#endregion

#region Utility

    private static bool Cast(BasePlayer player, out Vector3 pos, float distance, int layerMask)
    {
        bool result = Physics.Raycast(player.eyes.HeadRay(), out RaycastHit hit, distance, layerMask);
        pos = hit.point;
        return result;
    }

#endregion
}