Add a rudimentary endpoint for vote data

It’s a start. Toward #10.

htdocs/1.1/.htaccess

@@ -7,6 +7,7 @@ RewriteRule ^bills/([0-9]{4}).json$ bills.php?year=$1 [QSA]
 RewriteRule ^bill/([0-9]{4})/([A-Za-z0-9]+).json$ bill.php?year=$1&bill=$2 [QSA]
 RewriteRule ^legislators.json$ legislators.php [QSA]
 RewriteRule ^legislator/([a-z]+).json$ legislator.php?shortname=$1 [QSA]
+RewriteRule ^vote/([0-9]{4})/([a-zA-Z0-9]{4,12}).json$ vote.php?year=$1&lis_id=$2 [QSA]
 
 # By default, API data expires in just one hour.
 #Header set Cache-Control "max-age=360, public"

htdocs/1.1/vote.php

@@ -0,0 +1,64 @@
+<?php
+
+/**
+ * Vote endpoint
+ *
+ * PURPOSE
+ * Displays the outcome of a vote for a given year
+ **/
+
+
+/*
+ * Includes
+ */
+require_once $_SERVER['DOCUMENT_ROOT'].'/includes/settings.inc.php';
+require_once $_SERVER['DOCUMENT_ROOT'].'/includes/functions.inc.php';
+require_once 'functions.inc.php';
+
+/*
+ * Localize variables
+ */
+$year = mysql_escape_string($_REQUEST['year']);
+$lis_id = mysql_escape_string($_REQUEST['lis_id']);
+if (isset($_REQUEST['callback']))
+{
+    $callback = $_REQUEST['callback'];
+}
+
+/*
+ * Send an HTTP header defining the content as JSON.
+ */
+header('Content-type: application/json');
+
+/*
+ * Send an HTTP header allowing CORS.
+ */
+header("Access-Control-Allow-Origin: *");
+
+$vote_info = new Vote;
+$vote_info->lis_id = $lis_id;
+$vote_info->session_year = $year;
+$vote = $vote_info->get_aggregate();
+if ($vote === FALSE)
+{
+    header('HTTP/1.0 404 Not Found');
+    exit();
+}
+
+/*
+ * Get detailed information about who voted how.
+ */
+$vote['legislators'] = $vote_info->get_detailed();
+
+
+# Send the JSON. If a callback has been specified, prefix the JSON with that callback and wrap the
+# JSON in parentheses.
+if (isset($callback))
+{
+    echo $callback . ' (';
+}
+echo json_encode($vote);
+if (isset($callback))
+{
+    echo ');';
+}