/*-
 * Copyright (c) 2017-2021 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 "text.h"
#include "conv.h"
#include "sync.h"
#include "log.h"
#include "mem.h"
#include "val.h"
#include "win.h"
#include "tz.h"

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

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

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

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

    if (Settings->Timeout > TIMEOUT_MAX)
    {
        LogInfo(settingTooHigh,
                SettingKeys->Timeout,
                TIMEOUT_MAX);
        LogNotice(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);
        LogNotice(settingChangedLong,
                  SettingKeys->Priority,
                  Settings->Priority,
                  PRIORITY_MIN);
        Settings->Priority = PRIORITY_MIN;
    }
    else if (Settings->Priority > PRIORITY_MAX)
    {
        LogInfo(settingTooHigh,
                SettingKeys->Priority,
                PRIORITY_MAX);
        LogNotice(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);
        LogNotice(settingChangedLong, SettingKeys->Threshold,
                  Settings->Threshold, THRESHOLD_MIN);
        Settings->Threshold = THRESHOLD_MIN;
    }
}

static void ValidateTimeZoneDisplay(void)
{
    if (Settings->TimeZoneDisplay < TZD_MIN)
    {
        LogInfo(settingTooLow, SettingKeys->TimeZoneDisplay, TZD_MIN);
        LogNotice(settingChangedLong, SettingKeys->TimeZoneDisplay,
                  Settings->TimeZoneDisplay, TZD_MIN);
        Settings->TimeZoneDisplay = TZD_MIN;
    }
    else if (Settings->TimeZoneDisplay > TZD_MAX)
    {
        LogInfo(settingTooHigh, SettingKeys->TimeZoneDisplay, TZD_MAX);
        LogNotice(settingChangedLong, SettingKeys->TimeZoneDisplay,
                  Settings->TimeZoneDisplay, TZD_MAX);
        Settings->TimeZoneDisplay = TZD_MAX;
    }
}

static void ValidateTimeZoneValue(void)
{
    if (Settings->TimeZoneValue < TZVALUE_MIN)
    {
        LogInfo(settingTooLow, SettingKeys->TimeZoneValue, TZVALUE_MIN);
        LogNotice(settingChangedLong, SettingKeys->TimeZoneValue,
                  Settings->TimeZoneValue, TZVALUE_MIN);
        Settings->TimeZoneValue = TZVALUE_MIN;
    }
    else if (Settings->TimeZoneValue != TZVALUE_DEF &&
             Settings->TimeZoneValue > TZVALUE_MAX)
    {
        LogInfo(settingTooHigh, SettingKeys->TimeZoneValue, TZVALUE_MAX);
        LogNotice(settingChangedLong, SettingKeys->TimeZoneValue,
                  Settings->TimeZoneValue, TZVALUE_MAX);
        Settings->TimeZoneValue = TZVALUE_MAX;
    }

    if (Settings->TimeZoneValue % 60 >= 60)
    {
        long oldValue = Settings->TimeZoneValue;
        Settings->TimeZoneValue = (Settings->TimeZoneValue / 60) * 60;
        LogInfo(settingInvalid, SettingKeys->TimeZoneValue, oldValue);
        LogNotice(settingChangedLong, SettingKeys->TimeZoneValue,
                  oldValue, Settings->TimeZoneValue);
    }
}

static bool ValidateServer(char *name)
{
    return true;
}

static bool ValidatePort(char *name)
{
    return true;
}

void SanitizeSettings(void)
{
    LogDebug(validatingSettings);
    ValidateInterval();
    ValidateTimeout();
    ValidatePriority();
    ValidateThreshold();
    ValidateTimeZoneDisplay();
    ValidateTimeZoneValue();
    LogTrace(validatedSettings);
}

void SetInterval(long value, long opt)
{
    long oldValue = Settings->Interval;
    if (Settings->Interval != value)
    {
        LogNotice(settingChangedLong,
                  SettingKeys->Interval,
                  Settings->Interval,
                  value);
        Settings->Interval = value;
        ValidateInterval();
    }

    if ((opt & APPLY_UI_BACK) == APPLY_UI_BACK)
    {
        Forbid();
        if (WindowSettings != NULL)
        {
            WindowSettings->Interval = Settings->Interval;
        }
        Permit();
    }

    if ((opt & APPLY_UI_FRONT) == APPLY_UI_FRONT)
    {
        WriteUiInterval();
    }

    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && Settings->Interval != oldValue)
    {
        SendBrokerMessage(ATK_RESTART);
    }
}

void SetTimeout(long value, long opt)
{
    long oldValue = Settings->Timeout;
    if (Settings->Timeout != value)
    {
        LogNotice(settingChangedLong,
                  SettingKeys->Timeout,
                  Settings->Timeout,
                  value);
        Settings->Timeout = value;
        ValidateTimeout();
    }

    if ((opt & APPLY_UI_BACK) == APPLY_UI_BACK)
    {
        Forbid();
        if (WindowSettings != NULL)
        {
            WindowSettings->Timeout = Settings->Timeout;
        }
        Permit();
    }

    if ((opt & APPLY_UI_FRONT) == APPLY_UI_FRONT)
    {
        WriteUiTimeout();
    }

    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && Settings->Timeout != oldValue)
    {
        SendBrokerMessage(ATK_RESTART);
    }
}

void SetThreshold(char *valueString, long opt)
{
    unsigned long long value;
    long long oldValue = Settings->Threshold;
    int p = StrToLongLong(valueString, &value);

    if (p != -1 && Settings->Threshold != value)
    {
        char newValueString[MAXLONGLONGCHARSIZE];
        char oldValueString[MAXLONGLONGCHARSIZE];
        LongLongToStr(Settings->Threshold, oldValueString);
        LongLongToStr(value, newValueString);
        LogNotice(settingChangedString,
                  SettingKeys->Threshold,
                  oldValueString,
                  newValueString);
        Settings->Threshold = value;
        ValidateThreshold();
    }

    if ((opt & APPLY_UI_BACK) == APPLY_UI_BACK)
    {
        Forbid();
        if (WindowSettings != NULL)
        {
            WindowSettings->Threshold = Settings->Threshold;
        }
        Permit();
    }

    if ((opt & APPLY_UI_FRONT) == APPLY_UI_FRONT)
    {
        WriteUiThreshold();
    }

    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && Settings->Threshold != oldValue)
    {
        SendBrokerMessage(ATK_RESTART);
    }
}

void SetPriority(char *valueString, long opt)
{
    LONG value, oldValue = Settings->Priority;
    int p = StrToLong((STRPTR)valueString, &value);

    if (p != -1 && Settings->Priority != value)
    {
        LogNotice(settingChangedLong,
                  SettingKeys->Priority,
                  Settings->Priority,
                  value);
        Settings->Priority = value;
        ValidatePriority();
    }

    if ((opt & APPLY_UI_BACK) == APPLY_UI_BACK)
    {
        Forbid();
        if (WindowSettings != NULL)
        {
            WindowSettings->Priority = Settings->Priority;
        }
        Permit();
    }

    if ((opt & APPLY_UI_FRONT) == APPLY_UI_FRONT)
    {
        WriteUiCxPriority();
    }

    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && Settings->Priority != oldValue)
    {
        SetBrokerPriority(Settings->Priority);
    }
}

void SetServer(char *valueString, long opt)
{
    char *oldSettingValue, *newSettingValue;
    char *oldValue;

    if (!ValidateServer(valueString))
        return;

    oldValue = StrDupSafe(Settings->DestinationAddress);
    if (Stricmp((STRPTR)oldValue, (STRPTR)valueString) == 0)
    {
        FreeMemSafe(oldValue);
        return;
    }

    LogNotice(settingChangedString,
              SettingKeys->Threshold,
              oldValue,
              valueString);
    FreeMemSafe(oldValue);

    bool active = SynchronizerRunning;
    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && active)
    {
        Deactivate();
    }

    newSettingValue = StrDupSafe(valueString);
    Forbid();
    oldSettingValue = Settings->DestinationAddress;
    Settings->DestinationAddress = newSettingValue;
    Permit();
    FreeMemSafe(oldSettingValue);

    if ((opt & APPLY_UI_BACK) == APPLY_UI_BACK)
    {
        newSettingValue = StrDupSafe(valueString);
        oldSettingValue = NULL;

        Forbid();
        if (WindowSettings != NULL)
        {
            oldSettingValue = WindowSettings->DestinationAddress;
            WindowSettings->DestinationAddress = newSettingValue;
        }
        Permit();

        if (oldSettingValue == NULL)
            FreeMemSafe(newSettingValue);
        else
            FreeMemSafe(oldSettingValue);
    }

    if ((opt & APPLY_UI_FRONT) == APPLY_UI_FRONT)
    {
        WriteUiServer();
    }

    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && active)
    {
        while (SynchronizerRunning)
            Delay(10);
        Activate();
    }
}

void SetPort(char *valueString, long opt)
{
    char *oldSettingValue, *newSettingValue;
    char *oldValue;

    if (!ValidatePort(valueString))
        return;

    oldValue = StrDupSafe(Settings->DestinationPort);
    if (Stricmp((STRPTR)oldValue, (STRPTR)valueString) == 0)
    {
        FreeMemSafe(oldValue);
        return;
    }

    LogNotice(settingChangedString,
              SettingKeys->DestinationPort,
              oldValue,
              valueString);
    FreeMemSafe(oldValue);

    bool active = SynchronizerRunning;
    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && active)
    {
        Deactivate();
    }

    newSettingValue = StrDupSafe(valueString);
    Forbid();
    oldSettingValue = Settings->DestinationPort;
    Settings->DestinationPort = newSettingValue;
    Permit();
    FreeMemSafe(oldSettingValue);

    if ((opt & APPLY_UI_BACK) == APPLY_UI_BACK)
    {
        newSettingValue = StrDupSafe(valueString);
        oldSettingValue = NULL;

        Forbid();
        if (WindowSettings != NULL)
        {
            oldSettingValue = WindowSettings->DestinationPort;
            WindowSettings->DestinationPort = newSettingValue;
        }
        Permit();

        if (oldSettingValue == NULL)
            FreeMemSafe(newSettingValue);
        else
            FreeMemSafe(oldSettingValue);
    }

    if ((opt & APPLY_UI_FRONT) == APPLY_UI_FRONT)
    {
        WriteUiPort();
    }

    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && active)
    {
        while (SynchronizerRunning)
            Delay(10);
        Activate();
    }
}

void SetTimeZoneSetting(const char *settingKey, char **setting, char *valueString, long opt)
{
    char *oldSettingValue, *newSettingValue;
    char *oldValue;

    oldValue = StrDupSafe(*setting);
    if (Stricmp((STRPTR)oldValue, (STRPTR)valueString) == 0)
    {
        FreeMemSafe(oldValue);
        return;
    }

    LogNotice(settingChangedString,
              settingKey,
              oldValue,
              valueString);
    FreeMemSafe(oldValue);

    bool active = SynchronizerRunning;
    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && active)
    {
        Deactivate();
    }

    newSettingValue = StrDupSafe(valueString);
    Forbid();
    oldSettingValue = *setting;
    *setting = newSettingValue;
    Permit();
    FreeMemSafe(oldSettingValue);

    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && settingKey == SettingKeys->TZ)
    {
        InitTimezone();
    }

    if ((opt & APPLY_UI_FRONT) == APPLY_UI_FRONT)
    {
        SendWindowMessage(ATK_TZ_CHANGED);
    }

    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME && active)
    {
        while (SynchronizerRunning)
            Delay(10);
        Activate();
    }
}

void SetTimeZoneSettingLong(const char *settingKey, long *setting, char *valueString, long opt)
{
    LONG value, oldValue = *setting;
    int p = StrToLong((STRPTR)valueString, &value);

    if (p != -1 && oldValue != value)
    {
        LogNotice(settingChangedLong,
                  settingKey,
                  oldValue,
                  value);
        *setting = value;
    }

    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME)
    {
        if (settingKey == SettingKeys->TimeZoneValue || settingKey == SettingKeys->TimeZoneDst)
        {
            InitTimezone();
        }
    }

    if ((opt & APPLY_UI_FRONT) == APPLY_UI_FRONT)
    {
        SendWindowMessage(ATK_TZ_CHANGED);
    }

    if ((opt & APPLY_RUNTIME) == APPLY_RUNTIME)
    {
        SendBrokerMessage(ATK_RESTART);
    }
}