server.lua

local discordServerId = "ID_SERVER"
local discordRoleId = "ID_ROLE"
local discordAppId = "BOT_TOKEN"

local kickMessage = "Vous n'avez pas le rôle Discord requis pour rejoindre ce serveur."

function CheckDiscordRole(source)
    local discordId = nil
    
    for _, v in ipairs(GetPlayerIdentifiers(source)) do
        if string.sub(v, 1, string.len("discord:")) == "discord:" then
            discordId = string.sub(v, 9)
            break
        end
    end
    
    if discordId == nil then
        return false
    end
    
    local endpoint = ("https://discordapp.com/api/guilds/%s/members/%s"):format(discordServerId, discordId)
    local headers = {
        ["Authorization"] = "Bot " .. discordAppId,
        ["Content-Type"] = "application/json"
    }
    
    local roleFound = false
    PerformHttpRequest(endpoint, function(statusCode, responseText, headers)
        if statusCode == 200 then
            local response = json.decode(responseText)
            for _, role in ipairs(response.roles) do
                if role == discordRoleId then
                    roleFound = true
                    break
                end
            end
        end
    end, "GET", "", headers)
    
    Citizen.Wait(1000)
    
    return roleFound
end

AddEventHandler("playerConnecting", function(name, setKickReason, deferrals)
    local source = source
    
    deferrals.defer()
    deferrals.update("Vérification de votre rôle Discord...")
    
    Citizen.CreateThread(function()
        Citizen.Wait(500)
        
        if CheckDiscordRole(source) then
            deferrals.done()
        else
            deferrals.done(kickMessage)
        end
    end)
end)