using CounterStrikeSharp.API.Core;
using CounterStrikeSharp.API.Core.Translations;
using CounterStrikeSharp.API.Modules.Admin;
using CounterStrikeSharp.API.Modules.Commands;
using CounterStrikeSharp.API.Modules.Memory;
using CounterStrikeSharp.API.Modules.Utils;
using System.Text;
using CounterStrikeSharp.API.Modules.Entities;

namespace CS2_SimpleAdmin;

public partial class CS2_SimpleAdmin
{
    /// <summary>
    /// Sends a chat message only to admins that have chat permission.
    /// The message is encoded properly to handle UTF-8 characters.
    /// </summary>
    /// <param name="caller">The admin player sending the message, or null for console.</param>
    /// <param name="command">The command input containing the message.</param>
    [CommandHelper(1, "<message>")]
    [RequiresPermissions("@css/chat")]
    public void OnAdminToAdminSayCommand(CCSPlayerController? caller, CommandInfo command)
    {
        Helper.LogCommand(caller, command);

        var utf8BytesString = Encoding.UTF8.GetBytes(command.GetCommandString[command.GetCommandString.IndexOf(' ')..]);
        var utf8String = Encoding.UTF8.GetString(utf8BytesString);

        foreach (var player in Helper.GetValidPlayers()
                     .Where(p => AdminManager.PlayerHasPermissions(new SteamID(p.SteamID), "@css/chat")))
        {
            if (_localizer == null) continue;
            // zio: players get ">[STAFF][RANK] name: message", like @ in team chat.
            player.PrintToChat(caller == null
                ? _localizer["sa_adminchat_template_admin", _localizer["sa_console"], utf8String.Trim()]
                : StaffChatMessage(caller, utf8String.Trim()));
        }
    }

    // zio: staff chat line, ">[STAFF][RANK] name: message" ("[RANK]" left out without a rank group).
    private static string StaffChatMessage(CCSPlayerController sender, string message)
    {
        var rank = Helper.GetStaffRankTag(sender);
        return rank == null
            ? _localizer!["sa_staffchat_template_norank", sender.PlayerName, message]
            : _localizer!["sa_staffchat_template", rank, sender.PlayerName, message];
    }

    /// <summary>
    /// Sends a custom chat message to all players with color tags processed.
    /// </summary>
    /// <param name="caller">The admin or console sending the message.</param>
    /// <param name="command">The command input containing the message.</param>
    [CommandHelper(1, "<message>")]
    [RequiresPermissions("@css/chat")]
    public void OnAdminCustomSayCommand(CCSPlayerController? caller, CommandInfo command)
    {
        if (command.GetCommandString[command.GetCommandString.IndexOf(' ')..].Length == 0) return;

        var utf8BytesString = Encoding.UTF8.GetBytes(command.GetCommandString[command.GetCommandString.IndexOf(' ')..]);
        var utf8String = Encoding.UTF8.GetString(utf8BytesString);

        Helper.LogCommand(caller, command);

        foreach (var player in Helper.GetValidPlayers())
        {
            player.PrintToChat(utf8String.ReplaceColorTags());
        }
    }

    /// <summary>
    /// Sends a chat message to all players with localization prefix and color tags handled.
    /// </summary>
    /// <param name="caller">The admin or console sending the message.</param>
    /// <param name="command">The command input containing the message.</param>
    [CommandHelper(1, "<message>")]
    [RequiresPermissions("@css/chat")]
    public void OnAdminSayCommand(CCSPlayerController? caller, CommandInfo command)
    {
        if (command.GetCommandString[command.GetCommandString.IndexOf(' ')..].Length == 0) return;

        var utf8BytesString = Encoding.UTF8.GetBytes(command.GetCommandString[command.GetCommandString.IndexOf(' ')..]);
        var utf8String = Encoding.UTF8.GetString(utf8BytesString);

        Helper.LogCommand(caller, command);

        // zio: from a player (including @ in all chat), ">[RANK] name: message" with no [SA] prefix.
        // Console (and the web panel over RCON) keeps the plain "ADMIN:" message.
        if (caller != null && _localizer != null)
        {
            var rank = Helper.GetStaffRankTag(caller);
            var line = rank == null
                ? _localizer["sa_staffsay_template_norank", caller.PlayerName, utf8String.Trim()]
                : _localizer["sa_staffsay_template", rank, caller.PlayerName, utf8String.Trim()];
            foreach (var player in Helper.GetValidPlayers())
                player.PrintToChat(line);
            return;
        }

        foreach (var player in Helper.GetValidPlayers())
        {
            player.SendLocalizedMessage(_localizer,
                "sa_adminsay_prefix",
                utf8String.Trim().ReplaceColorTags()); // zio: Trim, the message starts with the space after the command
        }
    }

    /// <summary>
    /// Sends a private chat message from the caller to the specified target player(s).
    /// </summary>
    /// <param name="caller">The admin or console sending the private message.</param>
    /// <param name="command">The command input containing target and message.</param>
    [CommandHelper(2, "<#userid or name> <message>")]
    [RequiresPermissions("@css/chat")]
    public void OnAdminPrivateSayCommand(CCSPlayerController? caller, CommandInfo command)
    {
        var callerName = caller == null ? _localizer?["sa_console"] ?? "Console" : caller.PlayerName;

        var targets = GetTarget(command);
        if (targets == null) return;
        var playersToTarget = targets.Players.Where(player => player is { IsValid: true, IsHLTV: false }).ToList();

        //Helper.LogCommand(caller, command);

        var range = command.GetArg(0).Length + command.GetArg(1).Length + 2;
        var message = command.GetCommandString[range..];

        var utf8BytesString = Encoding.UTF8.GetBytes(message);
        var utf8String = Encoding.UTF8.GetString(utf8BytesString);

        // zio: from a player, "(PM) [RANK] name: message".
        var rank = caller == null ? null : Helper.GetStaffRankTag(caller);
        var line = caller == null || _localizer == null
            ? $"({callerName}) {utf8String.Trim()}".ReplaceColorTags()
            : rank == null
                ? _localizer["sa_psay_template_norank", callerName, utf8String.Trim()]
                : _localizer["sa_psay_template", rank, callerName, utf8String.Trim()];
        playersToTarget.ForEach(player =>
        {
            player.PrintToChat(line);
        });

        command.ReplyToCommand($" Private message sent!");
    }

    /// <summary>
    /// Broadcasts a center-screen message to all players.
    /// </summary>
    /// <param name="caller">The admin or console sending the message.</param>
    /// <param name="command">The command input containing the message.</param>
    [CommandHelper(1, "<message>")]
    [RequiresPermissions("@css/chat")]
    public void OnAdminCenterSayCommand(CCSPlayerController? caller, CommandInfo command)
    {
        var utf8BytesString = Encoding.UTF8.GetBytes(command.GetCommandString[command.GetCommandString.IndexOf(' ')..]);
        var utf8String = Encoding.UTF8.GetString(utf8BytesString);

        Helper.LogCommand(caller, command);
        Helper.PrintToCenterAll(utf8String.ReplaceColorTags());
    }

    /// <summary>
    /// Sends a HUD alert message to all players.
    /// </summary>
    /// <param name="caller">The admin or console sending the message.</param>
    /// <param name="command">The command input containing the message.</param>
    [CommandHelper(1, "<message>")]
    [RequiresPermissions("@css/chat")]
    public void OnAdminHudSayCommand(CCSPlayerController? caller, CommandInfo command)
    {
        var utf8BytesString = Encoding.UTF8.GetBytes(command.GetCommandString[command.GetCommandString.IndexOf(' ')..]);
        var utf8String = Encoding.UTF8.GetString(utf8BytesString);

        Helper.LogCommand(caller, command);

        VirtualFunctions.ClientPrintAll(
            HudDestination.Alert,
            utf8String.ReplaceColorTags(),
            0, 0, 0, 0, 0);
    }
}