#include < amxmodx >
#include < fakemeta >

#define PLUGIN  "Unlimited Team Changes"
#define VERSION "1.3"
#define AUTHOR  "HamletEagle"

#define BITS 1<<8
#define ADMIN_ACCES ADMIN_KICK

const m_bHasChangeTeamThisRound = 125
const XO_PLAYER = 5

enum _: eCvarsData
{
    cvar_OnlyAdmins,
    cvar_Enable
}

new g_iCvars[ eCvarsData ]
new g_iCachedCvars[ eCvarsData ]

new _pfnClientCommand

public plugin_init( )
{
    register_plugin
    (
        .plugin_name  = PLUGIN,
        .version      = VERSION,
        .author       = AUTHOR
    )

    g_iCvars[ cvar_OnlyAdmins ] = register_cvar( "only_admins_can_use", "0" )
    /*
    0 - all players
    1 - only admins with specified flag
    */

    g_iCvars[ cvar_Enable ] = register_cvar( "plugin_enabled", "1" )
    /*
    0 - plugin disabled
    1 - plugin enabled
    */

    _pfnClientCommand = register_forward( FM_ClientCommand, "pfnClientCommand", false )
    register_event( "HLTV", "Event_NewRound", "a", "1=0", "2=0" )

    register_clcmd( "chooseteam", "ClientCommand_ChTeam" )
    register_clcmd( "jointeam"  , "ClientCommand_ChTeam" )
}

public plugin_cfg( )
{
    UTIL_CacheCvars( )
}

public pfnClientCommand( id )
{
    //We need to catch the exact moment, so the cached cvar is not reliable here
    if( get_pcvar_num( g_iCvars[ cvar_Enable ] ) == 0 )
    {
        log_amx( "Plugin paused by cvar" )
        unregister_forward( FM_ClientCommand, _pfnClientCommand, false )
        pause( "a" )
    }
}

public Event_NewRound( )
{
    UTIL_CacheCvars( )
}

public ClientCommand_ChTeam( id )
{
    switch( g_iCachedCvars[ cvar_OnlyAdmins ] )
    {
        case 0 :
        {
            set_pdata_int( id, m_bHasChangeTeamThisRound , get_pdata_int( id, m_bHasChangeTeamThisRound, XO_PLAYER ) &  ~BITS, XO_PLAYER )
        }

        case 1 :
        {
            if( get_user_flags( id ) & ADMIN_ACCES )
            {
                set_pdata_int( id, m_bHasChangeTeamThisRound , get_pdata_int( id, m_bHasChangeTeamThisRound, XO_PLAYER ) &  ~BITS, XO_PLAYER )
            }
        }
        default:
        {
            return 0
        }
    }
    return 0
}

UTIL_CacheCvars( )
{
    for( new i; i < sizeof g_iCvars; i++ )
    {
        g_iCachedCvars[ i ] = get_pcvar_num( g_iCvars[ i ] )
    }
}