local env_config_path = os.getenv('APROXY_CONFIG_PATH')
local DEFAULT_CONFIG_PATH = ".;/etc/aproxy"
local config_path = env_config_path or DEFAULT_CONFIG_PATH

function mysplit (inputstr, sep)
        if sep == nil then
                sep = "%s"
        end
        local t={}
        for str in string.gmatch(inputstr, "([^"..sep.."]+)") do
                table.insert(t, str)
        end
        return t
end

local function findConfigFile()
    for _, config_directory in ipairs(mysplit(config_path, ";")) do
        local possible_config_path = config_directory .. "/" .. "conf.lua"
        local fd = io.open(possible_config_path, "rb")
        if fd then
            local data = fd:read("*a")
            fd:close()
            return data
        end
    end

    return nil
end

local function loadConfigFile()
    local config_file_data = assert(findConfigFile(), 'no config file found, config path: ' .. config_path)
    local config_file_function = assert(loadstring(config_file_data))
    return config_file_function()
end

return loadConfigFile()