/*-
 * Copyright (c) 2017-2020 Carsten Sonne Larsen <cs@innolan.net>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include "config.h"
#include "message.h"
#include "setting.h"
#include "log.h"

#include "logmod.h"
#define MODULENAME "Validation"

static const char *settingChangedLong = "%s changed: %ld -> %ld";
static const char *settingTooLow = "%s < %ld (too low)";
static const char *settingTooHigh = "%s > %ld (too high)";
static const char *settingGreaterThan = "%s * 2 > %s";

static void ValidateInterval(void)
{
    if (Settings->Interval < INTERVAL_MIN)
    {
        LogInfo(settingTooLow,
                SettingKeys->Interval,
                INTERVAL_MIN);
        LogInfo(settingChangedLong,
                SettingKeys->Interval,
                Settings->Interval,
                INTERVAL_MIN);
        Settings->Interval = INTERVAL_MIN;
    }
}

static void ValidateTimeout(void)
{
    if (Settings->Timeout < TIMEOUT_MIN)
    {
        LogInfo(settingTooLow,
                SettingKeys->Timeout,
                TIMEOUT_MIN);
        LogInfo(settingChangedLong,
                SettingKeys->Timeout,
                Settings->Timeout,
                TIMEOUT_MIN);
        Settings->Timeout = TIMEOUT_MIN;
    }

    if (Settings->Timeout > Settings->Interval / 2)
    {
        LogInfo(settingGreaterThan,
                SettingKeys->Timeout,
                SettingKeys->Interval);
        LogInfo(settingChangedLong,
                SettingKeys->Timeout,
                Settings->Timeout,
                Settings->Interval / 2);
        Settings->Timeout = Settings->Interval / 2;
    }

    if (Settings->Timeout > TIMEOUT_MAX)
    {
        LogInfo(settingTooHigh,
                SettingKeys->Timeout,
                TIMEOUT_MAX);
        LogInfo(settingChangedLong,
                SettingKeys->Timeout,
                Settings->Timeout,
                TIMEOUT_MAX);
        Settings->Timeout = TIMEOUT_MAX;
    }
}

static void ValidatePriority(void)
{
    if (Settings->Priority < PRIORITY_MIN)
    {
        LogInfo(settingTooLow,
                SettingKeys->Priority,
                PRIORITY_MIN);
        LogInfo(settingChangedLong,
                SettingKeys->Priority,
                Settings->Priority,
                PRIORITY_MIN);
        Settings->Priority = PRIORITY_MIN;
    }

    if (Settings->Priority > PRIORITY_MAX)
    {
        LogInfo(settingTooHigh,
                SettingKeys->Priority,
                PRIORITY_MAX);
        LogInfo(settingChangedLong,
                SettingKeys->Priority,
                Settings->Priority,
                PRIORITY_MAX);
        Settings->Priority = PRIORITY_MAX;
    }
}

static void ValidateThreshold(void)
{
    if (Settings->Threshold < THRESHOLD_MIN)
    {
        LogInfo(settingTooLow,
                SettingKeys->Threshold,
                THRESHOLD_MIN);
        LogInfo(settingChangedLong,
                SettingKeys->Threshold,
                Settings->Threshold,
                THRESHOLD_MIN);
        Settings->Threshold = THRESHOLD_MIN;
    }
}

void SanitizeSettings(void)
{
    ValidateInterval();
    ValidateTimeout();
    ValidatePriority();
    ValidateThreshold();
}