/*
 * CSB Match Config Loader
 * Copyright (C) 2026 counter-strike-boost.com
 *
 * amx_mr15 / amx_mr12 exec the matching competitive config and then, a moment
 * later, verify the critical cvars (mp_freezetime, mp_roundtime, mp_startmoney,
 * sv_alltalk, mp_maxrounds). Any cvar that did not take the expected value is
 * printed as a diff, so a silently broken match config is caught immediately.
 *
 * 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>

new const PLUGIN[] = "CSB Match Config Loader"
new const VERSION[] = "1.0.0"
new const AUTHOR[]  = "counter-strike-boost.com"

new g_pCfg15, g_pCfg12

new const g_szCheck[][] =
{
    "mp_freezetime",
    "mp_roundtime",
    "mp_startmoney",
    "sv_alltalk",
    "mp_maxrounds"
}

new g_szExpected[sizeof(g_szCheck)][16]
new g_iPendingMode

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

    g_pCfg15 = register_cvar("csb_cfg_mr15", "csb_mr15.cfg")
    g_pCfg12 = register_cvar("csb_cfg_mr12", "csb_mr12.cfg")

    register_concmd("amx_mr15", "cmdMr15", ADMIN_BAN, "- exec the MR15 config and validate cvars")
    register_concmd("amx_mr12", "cmdMr12", ADMIN_BAN, "- exec the MR12 config and validate cvars")
}

public cmdMr15(id, level, cid)
{
    if (!cmd_access(id, level, cid, 1))
        return PLUGIN_HANDLED

    loadConfig(id, 15)
    return PLUGIN_HANDLED
}

public cmdMr12(id, level, cid)
{
    if (!cmd_access(id, level, cid, 1))
        return PLUGIN_HANDLED

    loadConfig(id, 12)
    return PLUGIN_HANDLED
}

setExpected(const a[], const b[], const c[], const d[], const e[])
{
    copy(g_szExpected[0], charsmax(g_szExpected[]), a)
    copy(g_szExpected[1], charsmax(g_szExpected[]), b)
    copy(g_szExpected[2], charsmax(g_szExpected[]), c)
    copy(g_szExpected[3], charsmax(g_szExpected[]), d)
    copy(g_szExpected[4], charsmax(g_szExpected[]), e)
}

loadConfig(id, mode)
{
    new cfg[64]

    if (mode == 15)
    {
        get_pcvar_string(g_pCfg15, cfg, charsmax(cfg))
        setExpected("0", "1.75", "16000", "0", "30")
    }
    else
    {
        get_pcvar_string(g_pCfg12, cfg, charsmax(cfg))
        setExpected("0", "1.75", "16000", "0", "24")
    }

    if (!cfg[0])
    {
        console_print(id, "[CSB] No config filename is set.")
        return
    }

    server_cmd("exec %s", cfg)
    server_exec()

    client_print(0, print_chat, "[CSB] Executing match config %s (MR%d)...", cfg, mode)
    g_iPendingMode = mode

    new data[1]
    data[0] = id
    set_task(1.0, "taskVerify", 0, data, sizeof(data))
}

bool:cvarMatches(const a[], const b[])
{
    new Float:fa = str_to_float(a)
    new Float:fb = str_to_float(b)
    new Float:diff = fa - fb

    if (diff < 0.0)
        diff = -diff

    return diff < 0.01
}

public taskVerify(data[])
{
    new id = data[0]

    if (id && !is_user_connected(id))
        id = 0

    new mismatches = 0

    for (new i = 0; i < sizeof(g_szCheck); i++)
    {
        new cur[16]
        get_cvar_string(g_szCheck[i], cur, charsmax(cur))

        if (!cvarMatches(cur, g_szExpected[i]))
        {
            mismatches++

            if (id)
                console_print(id, "[CSB] MISMATCH  %s = %s  (expected %s)", g_szCheck[i], cur, g_szExpected[i])
            else
                log_amx("[CSB MR] mismatch %s = %s (expected %s)", g_szCheck[i], cur, g_szExpected[i])

            client_print(0, print_chat, "[CSB] Config warning: %s is %s, expected %s.", g_szCheck[i], cur, g_szExpected[i])
        }
    }

    if (!mismatches)
    {
        client_print(0, print_chat, "[CSB] MR%d config verified: all critical cvars are correct.", g_iPendingMode)
        if (id)
            console_print(id, "[CSB] All %d critical cvars match. Config is good.", sizeof(g_szCheck))
    }
    else
    {
        client_print(0, print_chat, "[CSB] MR%d config has %d cvar(s) that did not take - check server console.", g_iPendingMode, mismatches)
    }
}