/*
 * CSB Admin Godmode
 * Copyright (C) 2026 counter-strike-boost.com
 *
 * Toggles invulnerability on a target with set_user_godmode, shows a small HUD
 * marker while it is active, and clears it automatically on death, disconnect
 * and map change. Restricted to a high access flag and announced to admins.
 *
 * Inspired by the god-mode command from the classic AMX Mod X Admin Commands
 * plugin (AMX Mod X Development Team). This is an independent GPL
 * re-implementation; no original code is reused.
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later
 * version. It is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See <https://www.gnu.org/licenses/> for details.
 */

#include <amxmodx>
#include <amxmisc>
#include <fun>

new const PLUGIN[] = "CSB Admin Godmode"
new const VERSION[] = "1.0.0"
new const AUTHOR[]  = "counter-strike-boost.com"

new bool:g_bGod[33]
new g_pEnabled, g_pHud
new g_iSyncHud

public plugin_init()
{
    register_plugin(PLUGIN, VERSION, AUTHOR)

    g_pEnabled = register_cvar("csb_god_enabled", "1")
    g_pHud     = register_cvar("csb_god_hud", "1")

    register_concmd("amx_god", "cmdGod", ADMIN_CFG, "<name or #userid> [0|1] - toggle godmode on a target")

    register_event("DeathMsg", "eventDeath", "a", "1>0")

    g_iSyncHud = CreateHudSyncObj()

    set_task(1.0, "taskHud", 0, _, _, "b")
}

public client_disconnected(id)
{
    g_bGod[id] = false
}

public eventDeath()
{
    new victim = read_data(2)

    if (victim >= 1 && victim <= 32 && g_bGod[victim])
    {
        g_bGod[victim] = false

        if (is_user_connected(victim))
        {
            set_user_godmode(victim, 0)
            client_print(victim, print_chat, "[CSB] Your godmode was cleared on death.")
        }
    }
}

public cmdGod(id, level, cid)
{
    if (!cmd_access(id, level, cid, 1))
        return PLUGIN_HANDLED

    if (!get_pcvar_num(g_pEnabled))
    {
        console_print(id, "[CSB] Godmode is disabled (csb_god_enabled 0).")
        return PLUGIN_HANDLED
    }

    new arg[32]
    read_argv(1, arg, charsmax(arg))

    new target = cmd_target(id, arg, CMDTARGET_OBEY_IMMUNITY | CMDTARGET_ALLOW_SELF)

    if (!target)
        return PLUGIN_HANDLED

    if (!is_user_alive(target))
    {
        client_print(id, print_chat, "[CSB] That player is not alive.")
        return PLUGIN_HANDLED
    }

    new bool:want

    if (read_argc() > 2)
    {
        new stateArg[4]
        read_argv(2, stateArg, charsmax(stateArg))
        want = (str_to_num(stateArg) != 0)
    }
    else
    {
        want = !g_bGod[target]
    }

    g_bGod[target] = want
    set_user_godmode(target, want ? 1 : 0)

    new aname[32], tname[32]
    getAdminName(id, aname, charsmax(aname))
    get_user_name(target, tname, charsmax(tname))

    new msg[160]
    formatex(msg, charsmax(msg), "^x04[CSB]^x03 %s^x01 turned godmode^x04 %s^x01 for^x03 %s^x01.",
        aname, want ? "ON" : "OFF", tname)

    adminChat(msg)
    log_amx("[CSB Godmode] %s set godmode %s for %s", aname, want ? "on" : "off", tname)

    return PLUGIN_HANDLED
}

public taskHud()
{
    if (!get_pcvar_num(g_pHud))
        return

    new players[32], num, pid
    get_players(players, num, "a")

    for (new i = 0; i < num; i++)
    {
        pid = players[i]

        if (!g_bGod[pid])
            continue

        set_hudmessage(0, 255, 128, -1.0, 0.75, 0, 0.0, 1.1, 0.0, 0.0, -1)
        ShowSyncHudMsg(pid, g_iSyncHud, "[ GODMODE ]")
    }
}

getAdminName(id, name[], len)
{
    if (id)
        get_user_name(id, name, len)
    else
        copy(name, len, "CONSOLE")
}

adminChat(const msg[])
{
    new players[32], num, pid, msgid = get_user_msgid("SayText")
    get_players(players, num, "ch")

    for (new i = 0; i < num; i++)
    {
        pid = players[i]

        if (!(get_user_flags(pid) & ADMIN_CFG))
            continue

        message_begin(MSG_ONE, msgid, _, pid)
        write_byte(pid)
        write_string(msg)
        message_end()
    }
}