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<?php

//--------------------------------------------------------------------------------------------------

// This script reads event data from a JSON file and outputs those events which are within the range

// supplied by the "start" and "end" GET parameters.

//

// An optional "timezone" GET parameter will force all ISO8601 date stings to a given timezone.

//

// Requires PHP 5.2.0 or higher.

//--------------------------------------------------------------------------------------------------

// Require our Event class and datetime utilities

require dirname(__FILE__) . '/utils.php';

// Short-circuit if the client did not give us a date range.

if (!isset($_GET['start']) || !isset($_GET['end'])) {

        die("Please provide a date range.");

}

// Parse the start/end parameters.

// These are assumed to be ISO8601 strings with no time nor timezone, like "2013-12-29".

// Since no timezone will be present, they will parsed as UTC.

$range_start = parseDateTime($_GET['start']);

$range_end = parseDateTime($_GET['end']);

// Parse the timezone parameter if it is present.

$timezone = null;

if (isset($_GET['timezone'])) {

        $timezone = new DateTimeZone($_GET['timezone']);

}

// Read and parse our events JSON file into an array of event data arrays.

$json = file_get_contents(dirname(__FILE__) . '/../json/events.json');

$input_arrays = json_decode($json, true);

// Accumulate an output array of event data arrays.

$output_arrays = array();

foreach ($input_arrays as $array) {

        // Convert the input array into a useful Event object

        $event = new Event($array, $timezone);

        // If the event is in-bounds, add it to the output

        if ($event->isWithinDayRange($range_start, $range_end)) {

                $output_arrays[] = $event->toArray();

        }

}

// Send JSON to the client.

echo json_encode($output_arrays);