use \Tsugi\Core\LTIX;

use \Tsugi\Util\LTI;

use \Tsugi\Util\Net;

use \Tsugi\Util\Mersenne_Twister;

$sanity = array(

'urllib' => 'You should use urllib to retrieve the data from the API',

'urlencode' => 'You should use urlencode add parameters to the API url',

'json' => 'You should use the json library to parse the API data'

);

$api_url = dataUrl('opengeo');

$code = 42;

$sample = load_opengeo(42, $api_url);

$sample_location = $sample[0];

$sample_plus = $sample[1];

$sample_count = $sample[2];

$sample_url = $sample[3];

$code = $USER->id+$LINK->id+$CONTEXT->id;

$actual = load_opengeo($code, $api_url);

$actual_location = $actual[0];

$actual_place = $actual[1];

$actual_count = $actual[2];

$actual_url = $actual[3];

$oldgrade = $RESULT->grade;

if ( isset($_POST['plus_code']) && isset($_POST['code']) ) {

$RESULT->setJsonKeys( array(

'code' => $_POST['code'],

'plus_code' => $_POST['plus_code'],

'actual_url' => $actual_url,

'actual_place' => $actual_place

));

if ( $_POST['plus_code'] != $actual_place ) {

$_SESSION['error'] = "Your plus_code did not match";

if ( $USER->instructor ) $_SESSION['error'] = "Your plus_code '".$_POST['plus_code']."' did not match $actual_place";

header('Location: '.addSession('index.php'));

return;

}

$val = validate($sanity, $_POST['code']);

if ( is_string($val) ) {

$_SESSION['error'] = $val;

header('Location: '.addSession('index.php'));

return;

}

LTIX::gradeSendDueDate(1.0, $oldgrade, $dueDate);

// Redirect to ourself

header('Location: '.addSession('index.php'));

return;

}

if ( $RESULT->grade > 0 ) {

echo('<p class="alert alert-info">Your current grade on this assignment is: '.($RESULT->grade*100.0).'%</p>'."\n");

}

if ( $dueDate->message ) {

echo('<p style="color:red;">'.$dueDate->message.'</p>'."\n");

}

<p>

<b>Calling a JSON API</b>

</p>

In this assignment you will write a Python program somewhat similar to

<a href="http://www.py4e.com/code3/opengeo.py" target="_blank">http://www.py4e.com/code3/opengeo.py</a>.

The program will prompt for a location, contact a web service and retrieve

JSON for the web service and parse that data, and retrieve the first

<b>plus_code</b> from the JSON.

An

<a href="https://en.wikipedia.org/wiki/Open_Location_Code" target="_blank">Open Location Code</a>

is a textual identifier that is another form of address based on the location of the address.

</p>

<p>

<b>API End Points</b>

</p>

<p>

To complete this assignment, you should use this API endpoint that has a static subset

of the Open Street Map Data.

<pre>

<a href="<?= deHttps($api_url).'?' ?>" target="_blank"><?= deHttps($api_url) ?>?</a>

</pre>

This API also has no rate limit so you can test as often as you like.

If you visit the URL with no parameters, you get "No address..." response.

</p>

<p>

To call the API, you need to provide the

address that you are requesting as the <b>q=</b> parameter that is

properly URL encoded using the <b>urllib.parse.urlencode()</b> function as shown in

<a href="http://www.py4e.com/code3/opengeo.py"

target="_blank">http://www.py4e.com/code3/opengeo.py</a>

</p>

<p>

<?php httpsWarning($api_url); ?>

<p><b>Test Data / Sample Execution</b></p>

<p>

You can test to see if your program is working with a

location of "<?= $sample_location ?>" which will have a

<b>plus_code</b> of "<?= $sample_plus ?>".

<pre>

$ python solution.py

Enter location: <?= $sample_location . "\n" ?>

Retrieving http://...

Retrieved <?= $sample_count ?> characters

Plus code <?= $sample_plus ?>

</pre>

</p>

<p><b>Turn In</b></p>

<p>

Please run your program to find the <b>plus_code</b> for this location:

<pre>

<?= $actual_location ?>

</pre>

Make sure to enter the name and case exactly as above

and enter the <b>plus_code</b> and your Python code below.

Hint: The first five characters of the <b>plus_code</b>

are "<?= substr($actual_place,0,5) ?> ..."<br/>

</p>

<p>

Make sure to retreive the data from the URL specified above and <b>not</b> the

normal Google API. Your program should work with the Google API - but the

<b>plus_code</b> may not match for this assignment.

</p>

<form method="post">

plus_code: <input type="text" size="40" name="plus_code">

<input type="submit" value="Submit Assignment"><br/>

Python code:<br/>

<textarea rows="20" style="width: 90%" name="code"></textarea><br/>

</form>