<?php
# Generated by the protocol buffer compiler.  DO NOT EDIT!
# source: google/protobuf/timestamp.proto

namespace Google\Protobuf;

use Google\Protobuf\Internal\GPBType;
use Google\Protobuf\Internal\RepeatedField;
use Google\Protobuf\Internal\GPBUtil;

/**
 * A Timestamp represents a point in time independent of any time zone
 * or calendar, represented as seconds and fractions of seconds at
 * nanosecond resolution in UTC Epoch time. It is encoded using the
 * Proleptic Gregorian Calendar which extends the Gregorian calendar
 * backwards to year one. It is encoded assuming all minutes are 60
 * seconds long, i.e. leap seconds are "smeared" so that no leap second
 * table is needed for interpretation. Range is from
 * 0001-01-01T00:00:00Z to 9999-12-31T23:59:59.999999999Z.
 * By restricting to that range, we ensure that we can convert to
 * and from  RFC 3339 date strings.
 * See [https://www.ietf.org/rfc/rfc3339.txt](https://www.ietf.org/rfc/rfc3339.txt).
 * # Examples
 * Example 1: Compute Timestamp from POSIX `time()`.
 *     Timestamp timestamp;
 *     timestamp.set_seconds(time(NULL));
 *     timestamp.set_nanos(0);
 * Example 2: Compute Timestamp from POSIX `gettimeofday()`.
 *     struct timeval tv;
 *     gettimeofday(&tv, NULL);
 *     Timestamp timestamp;
 *     timestamp.set_seconds(tv.tv_sec);
 *     timestamp.set_nanos(tv.tv_usec * 1000);
 * Example 3: Compute Timestamp from Win32 `GetSystemTimeAsFileTime()`.
 *     FILETIME ft;
 *     GetSystemTimeAsFileTime(&ft);
 *     UINT64 ticks = (((UINT64)ft.dwHighDateTime) << 32) | ft.dwLowDateTime;
 *     // A Windows tick is 100 nanoseconds. Windows epoch 1601-01-01T00:00:00Z
 *     // is 11644473600 seconds before Unix epoch 1970-01-01T00:00:00Z.
 *     Timestamp timestamp;
 *     timestamp.set_seconds((INT64) ((ticks / 10000000) - 11644473600LL));
 *     timestamp.set_nanos((INT32) ((ticks % 10000000) * 100));
 * Example 4: Compute Timestamp from Java `System.currentTimeMillis()`.
 *     long millis = System.currentTimeMillis();
 *     Timestamp timestamp = Timestamp.newBuilder().setSeconds(millis / 1000)
 *         .setNanos((int) ((millis % 1000) * 1000000)).build();
 * Example 5: Compute Timestamp from current time in Python.
 *     timestamp = Timestamp()
 *     timestamp.GetCurrentTime()
 * # JSON Mapping
 * In JSON format, the Timestamp type is encoded as a string in the
 * [RFC 3339](https://www.ietf.org/rfc/rfc3339.txt) format. That is, the
 * format is "{year}-{month}-{day}T{hour}:{min}:{sec}[.{frac_sec}]Z"
 * where {year} is always expressed using four digits while {month}, {day},
 * {hour}, {min}, and {sec} are zero-padded to two digits each. The fractional
 * seconds, which can go up to 9 digits (i.e. up to 1 nanosecond resolution),
 * are optional. The "Z" suffix indicates the timezone ("UTC"); the timezone
 * is required, though only UTC (as indicated by "Z") is presently supported.
 * For example, "2017-01-15T01:30:15.01Z" encodes 15.01 seconds past
 * 01:30 UTC on January 15, 2017.
 * In JavaScript, one can convert a Date object to this format using the
 * standard [toISOString()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString]
 * method. In Python, a standard `datetime.datetime` object can be converted
 * to this format using [`strftime`](https://docs.python.org/2/library/time.html#time.strftime)
 * with the time format spec '%Y-%m-%dT%H:%M:%S.%fZ'. Likewise, in Java, one
 * can use the Joda Time's [`ISODateTimeFormat.dateTime()`](
 * http://www.joda.org/joda-time/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime--)
 * to obtain a formatter capable of generating timestamps in this format.
 *
 * Generated from protobuf message <code>google.protobuf.Timestamp</code>
 */
class Timestamp extends \Google\Protobuf\Internal\Message
{
    /**
     * Represents seconds of UTC time since Unix epoch
     * 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
     * 9999-12-31T23:59:59Z inclusive.
     *
     * Generated from protobuf field <code>int64 seconds = 1;</code>
     */
    private $seconds = 0;
    /**
     * Non-negative fractions of a second at nanosecond resolution. Negative
     * second values with fractions must still have non-negative nanos values
     * that count forward in time. Must be from 0 to 999,999,999
     * inclusive.
     *
     * Generated from protobuf field <code>int32 nanos = 2;</code>
     */
    private $nanos = 0;

    public function __construct() {
        \GPBMetadata\Google\Protobuf\Timestamp::initOnce();
        parent::__construct();
    }

    /**
     * Represents seconds of UTC time since Unix epoch
     * 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
     * 9999-12-31T23:59:59Z inclusive.
     *
     * Generated from protobuf field <code>int64 seconds = 1;</code>
     * @return int|string
     */
    public function getSeconds()
    {
        return $this->seconds;
    }

    /**
     * Represents seconds of UTC time since Unix epoch
     * 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to
     * 9999-12-31T23:59:59Z inclusive.
     *
     * Generated from protobuf field <code>int64 seconds = 1;</code>
     * @param int|string $var
     * @return $this
     */
    public function setSeconds($var)
    {
        GPBUtil::checkInt64($var);
        $this->seconds = $var;

        return $this;
    }

    /**
     * Non-negative fractions of a second at nanosecond resolution. Negative
     * second values with fractions must still have non-negative nanos values
     * that count forward in time. Must be from 0 to 999,999,999
     * inclusive.
     *
     * Generated from protobuf field <code>int32 nanos = 2;</code>
     * @return int
     */
    public function getNanos()
    {
        return $this->nanos;
    }

    /**
     * Non-negative fractions of a second at nanosecond resolution. Negative
     * second values with fractions must still have non-negative nanos values
     * that count forward in time. Must be from 0 to 999,999,999
     * inclusive.
     *
     * Generated from protobuf field <code>int32 nanos = 2;</code>
     * @param int $var
     * @return $this
     */
    public function setNanos($var)
    {
        GPBUtil::checkInt32($var);
        $this->nanos = $var;

        return $this;
    }

    /**
     * Converts PHP DateTime to Timestamp.
     *
     * @param DateTime $datetime
     */
    public function fromDateTime($datetime)
    {
        if (get_class($datetime) !== \DateTime::class) {
            trigger_error("Given parameter is not a DateTime.",
                          E_USER_ERROR);
        }
        $this->seconds = $datetime->format('U');
        $this->nanos = 0;
    }

    /**
     * Converts Timestamp to PHP DateTime. Nano second is ignored.
     *
     * @return DateTime $datetime
     */
    public function toDateTime()
    {
        return \DateTime::createFromFormat('U', $this->seconds);
    }
}

