From 8f80ba24df0a1c6dd83775fe1361c9a233ffd5cd Mon Sep 17 00:00:00 2001
From: "John R. D'Orazio" <priest@johnromanodorazio.com>
Date: Fri, 3 Jan 2025 01:08:56 +0100
Subject: [PATCH] only allow to request a supported locale for a calendar

---
 php/index.php         |  2 +-
 php/src/Utilities.php | 27 ++++++++++++++++++++++-----
 2 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/php/index.php b/php/index.php
index d7fb32c..490b53e 100644
--- a/php/index.php
+++ b/php/index.php
@@ -114,7 +114,7 @@
 
 if ($litSettings->Year >= 1970 && $litSettings->Year <= 9999) {
     $queryData  = Utilities::prepareQueryData($litSettings);
-    $response   = Utilities::sendAPIRequest($queryData);
+    $response   = Utilities::sendAPIRequest($queryData, $metadata);
     $LitCalData = json_decode($response);
 
     if (json_last_error() !== JSON_ERROR_NONE) {
diff --git a/php/src/Utilities.php b/php/src/Utilities.php
index 15bb37d..0e85482 100644
--- a/php/src/Utilities.php
+++ b/php/src/Utilities.php
@@ -46,10 +46,31 @@ public static function retrieveMetadata()
      * @return string The response from the API request.
      * @throws Exception If the request fails or the HTTP response status is not 200.
      */
-    public static function sendAPIRequest(array $queryData)
+    public static function sendAPIRequest(array $queryData, array $metadata)
     {
         $url = LITCAL_API_URL;
         $headers = ['Accept: application/json'];
+        if (isset($queryData["locale"])) {
+            if (isset($queryData["diocesan_calendar"])) {
+                $diocesanCalendarMetadata = array_values(array_filter($metadata['diocesan_calendars'], fn($calendar) => $queryData["diocesan_calendar"] === $calendar["calendar_id"]))[0];
+                if (!in_array($queryData["locale"], $diocesanCalendarMetadata["locales"])) {
+                    $queryData["locale"] = $diocesanCalendarMetadata["locales"][0];
+                }
+            }
+            elseif (isset($queryData["national_calendar"])) {
+                $nationalCalendarMetadata = array_values(array_filter($metadata['national_calendars'], fn($calendar) => $queryData["national_calendar"] === $calendar["calendar_id"]))[0];
+                if (!in_array($queryData["locale"], $nationalCalendarMetadata["locales"])) {
+                    $queryData["locale"] = $nationalCalendarMetadata["locales"][0];
+                }
+            }
+            else {
+                if (!in_array($queryData["locale"], $metadata['locales'])) {
+                    $queryData["locale"] = $metadata['locales'][0];
+                }
+            }
+            $headers[] = 'Accept-Language: ' . $queryData["locale"];
+            unset($queryData["locale"]);
+        }
         if (isset($queryData["diocesan_calendar"])) {
             $url .= "/diocese/" . $queryData["diocesan_calendar"];
             unset($queryData["diocesan_calendar"]);
@@ -58,10 +79,6 @@ public static function sendAPIRequest(array $queryData)
             $url .= "/nation/" . $queryData["national_calendar"];
             unset($queryData["national_calendar"]);
         }
-        if (isset($queryData["locale"])) {
-            $headers[] = 'Accept-Language: ' . $queryData["locale"];
-            unset($queryData["locale"]);
-        }
         if (isset($queryData["year"])) {
             $url .= "/" . $queryData["year"];
             unset($queryData["year"]);