/*********************************************************************
 *
 *  $Id: svn_id $
 *
 *  Implements the high-level API for RealTimeClock functions
 *
 *  - - - - - - - - - License information: - - - - - - - - -
 *
 *  Copyright (C) 2011 and beyond by Yoctopuce Sarl, Switzerland.
 *
 *  Yoctopuce Sarl (hereafter Licensor) grants to you a perpetual
 *  non-exclusive license to use, modify, copy and integrate this
 *  file into your software for the sole purpose of interfacing
 *  with Yoctopuce products.
 *
 *  You may reproduce and distribute copies of this file in
 *  source or object form, as long as the sole purpose of this
 *  code is to interface with Yoctopuce products. You must retain
 *  this notice in the distributed source file.
 *
 *  You should refer to Yoctopuce General Terms and Conditions
 *  for additional information regarding your rights and
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 *
 *  THE SOFTWARE AND DOCUMENTATION ARE PROVIDED 'AS IS' WITHOUT
 *  WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
 *  WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS
 *  FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO
 *  EVENT SHALL LICENSOR BE LIABLE FOR ANY INCIDENTAL, SPECIAL,
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 *********************************************************************/

import { YAPI, YAPIContext, YErrorMsg, YFunction, YModule, YSensor, YDataLogger, YMeasure } from './yocto_api.js';

//--- (YRealTimeClock class start)
/**
 * YRealTimeClock Class: real-time clock control interface, available for instance in the
 * YoctoHub-GSM-4G, the YoctoHub-Wireless-SR, the YoctoHub-Wireless-g or the YoctoHub-Wireless-n
 *
 * The YRealTimeClock class provide access to the embedded real-time clock available on some Yoctopuce
 * devices. It can provide current date and time, even after a power outage
 * lasting several days. It is the base for automated wake-up functions provided by the WakeUpScheduler.
 * The current time may represent a local time as well as an UTC time, but no automatic time change
 * will occur to account for daylight saving time.
 */
//--- (end of YRealTimeClock class start)

export class YRealTimeClock extends YFunction
{
    //--- (YRealTimeClock attributes declaration)
    _className: string;
    _unixTime: number = YRealTimeClock.UNIXTIME_INVALID;
    _dateTime: string = YRealTimeClock.DATETIME_INVALID;
    _utcOffset: number = YRealTimeClock.UTCOFFSET_INVALID;
    _timeSet: YRealTimeClock.TIMESET = YRealTimeClock.TIMESET_INVALID;
    _disableHostSync: YRealTimeClock.DISABLEHOSTSYNC = YRealTimeClock.DISABLEHOSTSYNC_INVALID;
    _valueCallbackRealTimeClock: YRealTimeClock.ValueCallback | null = null;

    // API symbols as object properties
    public readonly UNIXTIME_INVALID: number = YAPI.INVALID_LONG;
    public readonly DATETIME_INVALID: string = YAPI.INVALID_STRING;
    public readonly UTCOFFSET_INVALID: number = YAPI.INVALID_INT;
    public readonly TIMESET_FALSE: YRealTimeClock.TIMESET = 0;
    public readonly TIMESET_TRUE: YRealTimeClock.TIMESET = 1;
    public readonly TIMESET_INVALID: YRealTimeClock.TIMESET = -1;
    public readonly DISABLEHOSTSYNC_FALSE: YRealTimeClock.DISABLEHOSTSYNC = 0;
    public readonly DISABLEHOSTSYNC_TRUE: YRealTimeClock.DISABLEHOSTSYNC = 1;
    public readonly DISABLEHOSTSYNC_INVALID: YRealTimeClock.DISABLEHOSTSYNC = -1;

    // API symbols as static members
    public static readonly UNIXTIME_INVALID: number = YAPI.INVALID_LONG;
    public static readonly DATETIME_INVALID: string = YAPI.INVALID_STRING;
    public static readonly UTCOFFSET_INVALID: number = YAPI.INVALID_INT;
    public static readonly TIMESET_FALSE: YRealTimeClock.TIMESET = 0;
    public static readonly TIMESET_TRUE: YRealTimeClock.TIMESET = 1;
    public static readonly TIMESET_INVALID: YRealTimeClock.TIMESET = -1;
    public static readonly DISABLEHOSTSYNC_FALSE: YRealTimeClock.DISABLEHOSTSYNC = 0;
    public static readonly DISABLEHOSTSYNC_TRUE: YRealTimeClock.DISABLEHOSTSYNC = 1;
    public static readonly DISABLEHOSTSYNC_INVALID: YRealTimeClock.DISABLEHOSTSYNC = -1;
    //--- (end of YRealTimeClock attributes declaration)

    constructor(yapi: YAPIContext, func: string)
    {
        //--- (YRealTimeClock constructor)
        super(yapi, func);
        this._className                  = 'RealTimeClock';
        //--- (end of YRealTimeClock constructor)
    }

    //--- (YRealTimeClock implementation)

    imm_parseAttr(name: string, val: any): number
    {
        switch (name) {
        case 'unixTime':
            this._unixTime = <number> <number> val;
            return 1;
        case 'dateTime':
            this._dateTime = <string> <string> val;
            return 1;
        case 'utcOffset':
            this._utcOffset = <number> <number> val;
            return 1;
        case 'timeSet':
            this._timeSet = <YRealTimeClock.TIMESET> <number> val;
            return 1;
        case 'disableHostSync':
            this._disableHostSync = <YRealTimeClock.DISABLEHOSTSYNC> <number> val;
            return 1;
        }
        return super.imm_parseAttr(name, val);
    }

    /**
     * Returns the current time in Unix format (number of elapsed seconds since Jan 1st, 1970).
     *
     * @return an integer corresponding to the current time in Unix format (number of elapsed seconds
     * since Jan 1st, 1970)
     *
     * On failure, throws an exception or returns YRealTimeClock.UNIXTIME_INVALID.
     */
    async get_unixTime(): Promise<number>
    {
        let res: number;
        if (this._cacheExpiration <= this._yapi.GetTickCount()) {
            if (await this.load(this._yapi.defaultCacheValidity) != this._yapi.SUCCESS) {
                return YRealTimeClock.UNIXTIME_INVALID;
            }
        }
        res = this._unixTime;
        return res;
    }

    /**
     * Changes the current time. Time is specifid in Unix format (number of elapsed seconds since Jan 1st, 1970).
     *
     * @param newval : an integer corresponding to the current time
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    async set_unixTime(newval: number): Promise<number>
    {
        let rest_val: string;
        rest_val = String(newval);
        return await this._setAttr('unixTime', rest_val);
    }

    /**
     * Returns the current time in the form "YYYY/MM/DD hh:mm:ss".
     *
     * @return a string corresponding to the current time in the form "YYYY/MM/DD hh:mm:ss"
     *
     * On failure, throws an exception or returns YRealTimeClock.DATETIME_INVALID.
     */
    async get_dateTime(): Promise<string>
    {
        let res: string;
        if (this._cacheExpiration <= this._yapi.GetTickCount()) {
            if (await this.load(this._yapi.defaultCacheValidity) != this._yapi.SUCCESS) {
                return YRealTimeClock.DATETIME_INVALID;
            }
        }
        res = this._dateTime;
        return res;
    }

    /**
     * Returns the number of seconds between current time and UTC time (time zone).
     *
     * @return an integer corresponding to the number of seconds between current time and UTC time (time zone)
     *
     * On failure, throws an exception or returns YRealTimeClock.UTCOFFSET_INVALID.
     */
    async get_utcOffset(): Promise<number>
    {
        let res: number;
        if (this._cacheExpiration <= this._yapi.GetTickCount()) {
            if (await this.load(this._yapi.defaultCacheValidity) != this._yapi.SUCCESS) {
                return YRealTimeClock.UTCOFFSET_INVALID;
            }
        }
        res = this._utcOffset;
        return res;
    }

    /**
     * Changes the number of seconds between current time and UTC time (time zone).
     * The timezone is automatically rounded to the nearest multiple of 15 minutes.
     * Remember to call the saveToFlash() method of the module if the
     * modification must be kept.
     *
     * @param newval : an integer corresponding to the number of seconds between current time and UTC time (time zone)
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    async set_utcOffset(newval: number): Promise<number>
    {
        let rest_val: string;
        rest_val = String(newval);
        return await this._setAttr('utcOffset', rest_val);
    }

    /**
     * Returns true if the clock has been set, and false otherwise.
     *
     * @return either YRealTimeClock.TIMESET_FALSE or YRealTimeClock.TIMESET_TRUE, according to true if
     * the clock has been set, and false otherwise
     *
     * On failure, throws an exception or returns YRealTimeClock.TIMESET_INVALID.
     */
    async get_timeSet(): Promise<YRealTimeClock.TIMESET>
    {
        let res: number;
        if (this._cacheExpiration <= this._yapi.GetTickCount()) {
            if (await this.load(this._yapi.defaultCacheValidity) != this._yapi.SUCCESS) {
                return YRealTimeClock.TIMESET_INVALID;
            }
        }
        res = this._timeSet;
        return res;
    }

    /**
     * Returns true if the automatic clock synchronization with host has been disabled,
     * and false otherwise.
     *
     * @return either YRealTimeClock.DISABLEHOSTSYNC_FALSE or YRealTimeClock.DISABLEHOSTSYNC_TRUE,
     * according to true if the automatic clock synchronization with host has been disabled,
     *         and false otherwise
     *
     * On failure, throws an exception or returns YRealTimeClock.DISABLEHOSTSYNC_INVALID.
     */
    async get_disableHostSync(): Promise<YRealTimeClock.DISABLEHOSTSYNC>
    {
        let res: number;
        if (this._cacheExpiration <= this._yapi.GetTickCount()) {
            if (await this.load(this._yapi.defaultCacheValidity) != this._yapi.SUCCESS) {
                return YRealTimeClock.DISABLEHOSTSYNC_INVALID;
            }
        }
        res = this._disableHostSync;
        return res;
    }

    /**
     * Changes the automatic clock synchronization with host working state.
     * To disable automatic synchronization, set the value to true.
     * To enable automatic synchronization (default), set the value to false.
     *
     * If you want the change to be kept after a device reboot,
     * make sure  to call the matching module saveToFlash().
     *
     * @param newval : either YRealTimeClock.DISABLEHOSTSYNC_FALSE or YRealTimeClock.DISABLEHOSTSYNC_TRUE,
     * according to the automatic clock synchronization with host working state
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    async set_disableHostSync(newval: YRealTimeClock.DISABLEHOSTSYNC): Promise<number>
    {
        let rest_val: string;
        rest_val = String(newval);
        return await this._setAttr('disableHostSync', rest_val);
    }

    /**
     * Retrieves a real-time clock for a given identifier.
     * The identifier can be specified using several formats:
     *
     * - FunctionLogicalName
     * - ModuleSerialNumber.FunctionIdentifier
     * - ModuleSerialNumber.FunctionLogicalName
     * - ModuleLogicalName.FunctionIdentifier
     * - ModuleLogicalName.FunctionLogicalName
     *
     *
     * This function does not require that the real-time clock is online at the time
     * it is invoked. The returned object is nevertheless valid.
     * Use the method YRealTimeClock.isOnline() to test if the real-time clock is
     * indeed online at a given time. In case of ambiguity when looking for
     * a real-time clock by logical name, no error is notified: the first instance
     * found is returned. The search is performed first by hardware name,
     * then by logical name.
     *
     * If a call to this object's is_online() method returns FALSE although
     * you are certain that the matching device is plugged, make sure that you did
     * call registerHub() at application initialization time.
     *
     * @param func : a string that uniquely characterizes the real-time clock, for instance
     *         YHUBGSM5.realTimeClock.
     *
     * @return a YRealTimeClock object allowing you to drive the real-time clock.
     */
    static FindRealTimeClock(func: string): YRealTimeClock
    {
        let obj: YRealTimeClock | null;
        obj = <YRealTimeClock> YFunction._FindFromCache('RealTimeClock', func);
        if (obj == null) {
            obj = new YRealTimeClock(YAPI, func);
            YFunction._AddToCache('RealTimeClock', func, obj);
        }
        return obj;
    }

    /**
     * Retrieves a real-time clock for a given identifier in a YAPI context.
     * The identifier can be specified using several formats:
     *
     * - FunctionLogicalName
     * - ModuleSerialNumber.FunctionIdentifier
     * - ModuleSerialNumber.FunctionLogicalName
     * - ModuleLogicalName.FunctionIdentifier
     * - ModuleLogicalName.FunctionLogicalName
     *
     *
     * This function does not require that the real-time clock is online at the time
     * it is invoked. The returned object is nevertheless valid.
     * Use the method YRealTimeClock.isOnline() to test if the real-time clock is
     * indeed online at a given time. In case of ambiguity when looking for
     * a real-time clock by logical name, no error is notified: the first instance
     * found is returned. The search is performed first by hardware name,
     * then by logical name.
     *
     * @param yctx : a YAPI context
     * @param func : a string that uniquely characterizes the real-time clock, for instance
     *         YHUBGSM5.realTimeClock.
     *
     * @return a YRealTimeClock object allowing you to drive the real-time clock.
     */
    static FindRealTimeClockInContext(yctx: YAPIContext, func: string): YRealTimeClock
    {
        let obj: YRealTimeClock | null;
        obj = <YRealTimeClock> YFunction._FindFromCacheInContext(yctx, 'RealTimeClock', func);
        if (obj == null) {
            obj = new YRealTimeClock(yctx, func);
            YFunction._AddToCache('RealTimeClock', func, obj);
        }
        return obj;
    }

    /**
     * Registers the callback function that is invoked on every change of advertised value.
     * The callback is then invoked only during the execution of ySleep or yHandleEvents.
     * This provides control over the time when the callback is triggered. For good responsiveness,
     * remember to call one of these two functions periodically. The callback is called once juste after beeing
     * registered, passing the current advertised value  of the function, provided that it is not an empty string.
     * To unregister a callback, pass a null pointer as argument.
     *
     * @param callback : the callback function to call, or a null pointer. The callback function should take two
     *         arguments: the function object of which the value has changed, and the character string describing
     *         the new advertised value.
     * @noreturn
     */
    async registerValueCallback(callback: YRealTimeClock.ValueCallback | null): Promise<number>
    {
        let val: string;
        if (callback != null) {
            await YFunction._UpdateValueCallbackList(this, true);
        } else {
            await YFunction._UpdateValueCallbackList(this, false);
        }
        this._valueCallbackRealTimeClock = callback;
        // Immediately invoke value callback with current value
        if (callback != null && await this.isOnline()) {
            val = this._advertisedValue;
            if (!(val == '')) {
                await this._invokeValueCallback(val);
            }
        }
        return 0;
    }

    async _invokeValueCallback(value: string): Promise<number>
    {
        if (this._valueCallbackRealTimeClock != null) {
            try {
                await this._valueCallbackRealTimeClock(this, value);
            } catch (e) {
                this._yapi.imm_log('Exception in valueCallback:', e);
            }
        } else {
            await super._invokeValueCallback(value);
        }
        return 0;
    }

    /**
     * Continues the enumeration of real-time clocks started using yFirstRealTimeClock().
     * Caution: You can't make any assumption about the returned real-time clocks order.
     * If you want to find a specific a real-time clock, use RealTimeClock.findRealTimeClock()
     * and a hardwareID or a logical name.
     *
     * @return a pointer to a YRealTimeClock object, corresponding to
     *         a real-time clock currently online, or a null pointer
     *         if there are no more real-time clocks to enumerate.
     */
    nextRealTimeClock(): YRealTimeClock | null
    {
        let resolve = this._yapi.imm_resolveFunction(this._className, this._func);
        if (resolve.errorType != YAPI.SUCCESS) return null;
        let next_hwid = this._yapi.imm_getNextHardwareId(this._className, <string> resolve.result);
        if (next_hwid == null) return null;
        return YRealTimeClock.FindRealTimeClockInContext(this._yapi, next_hwid);
    }

    /**
     * Starts the enumeration of real-time clocks currently accessible.
     * Use the method YRealTimeClock.nextRealTimeClock() to iterate on
     * next real-time clocks.
     *
     * @return a pointer to a YRealTimeClock object, corresponding to
     *         the first real-time clock currently online, or a null pointer
     *         if there are none.
     */
    static FirstRealTimeClock(): YRealTimeClock | null
    {
        let next_hwid = YAPI.imm_getFirstHardwareId('RealTimeClock');
        if (next_hwid == null) return null;
        return YRealTimeClock.FindRealTimeClock(next_hwid);
    }

    /**
     * Starts the enumeration of real-time clocks currently accessible.
     * Use the method YRealTimeClock.nextRealTimeClock() to iterate on
     * next real-time clocks.
     *
     * @param yctx : a YAPI context.
     *
     * @return a pointer to a YRealTimeClock object, corresponding to
     *         the first real-time clock currently online, or a null pointer
     *         if there are none.
     */
    static FirstRealTimeClockInContext(yctx: YAPIContext): YRealTimeClock | null
    {
        let next_hwid = yctx.imm_getFirstHardwareId('RealTimeClock');
        if (next_hwid == null) return null;
        return YRealTimeClock.FindRealTimeClockInContext(yctx, next_hwid);
    }

    //--- (end of YRealTimeClock implementation)
}

export namespace YRealTimeClock {
    //--- (YRealTimeClock definitions)
    export const enum TIMESET
    {
        FALSE = 0,
        TRUE = 1,
        INVALID = -1
    }

    export const enum DISABLEHOSTSYNC
    {
        FALSE = 0,
        TRUE = 1,
        INVALID = -1
    }

    export interface ValueCallback {(func: YRealTimeClock, value: string): void}

    //--- (end of YRealTimeClock definitions)
}

