From 06055dc344ac5b2d3ad5d8bb97f641b41c1cffbd Mon Sep 17 00:00:00 2001
From: Ahmed Nagi <ahmedflnagi@gmail.com>
Date: Sun, 21 Jul 2024 11:06:35 +0300
Subject: [PATCH] wip

---
 config/wopi.php                           | 13 +++-
 src/Contracts/AbstractDocumentManager.php | 92 ++++++++++++++++++-----
 2 files changed, 82 insertions(+), 23 deletions(-)

diff --git a/config/wopi.php b/config/wopi.php
index cd60d84..0715f3b 100644
--- a/config/wopi.php
+++ b/config/wopi.php
@@ -1,14 +1,14 @@
 <?php
 
 return [
-     /*
+    /*
      * Managing documents differs a lot between apps, because of this reason
      * this configration left empty to be implemented by the user There's
      * plans to implement example storage manager in the future though.
      */
     'document_manager' => null,
 
-     /*
+    /*
      * Default UI langauge.
      */
     'ui_language' => 'en-US',
@@ -29,7 +29,7 @@
      * not have any validation logic. It's a great place to implement
      * custom validation for the access_token and access_token_ttl.
      */
-    'wopi_request' =>  Nagi\LaravelWopi\Http\Requests\WopiRequest::class,
+    'wopi_request' => Nagi\LaravelWopi\Http\Requests\WopiRequest::class,
 
     /*
      * Here's you can define your middleware pipeline that every
@@ -37,7 +37,7 @@
      */
     'middleware' => [Nagi\LaravelWopi\Http\Middleware\ValidateProof::class],
 
-     /*
+    /*
      * Collabora or Microsoft Office 365 or any WOPI client url.
      */
     'client_url' => env('WOPI_CLIENT_URL', ''),
@@ -111,4 +111,9 @@
      */
     'support_user_info' => false,
 
+    /*
+     * @see https://learn.microsoft.com/en-us/microsoft-365/cloud-storage-partner-program/online/discovery#placeholder-values
+     */
+    'microsoft_365_url_placeholder_value_map' => [],
+
 ];
diff --git a/src/Contracts/AbstractDocumentManager.php b/src/Contracts/AbstractDocumentManager.php
index d5ebfe7..aab1b2d 100644
--- a/src/Contracts/AbstractDocumentManager.php
+++ b/src/Contracts/AbstractDocumentManager.php
@@ -88,7 +88,7 @@ abstract class AbstractDocumentManager
     /**
      * Preform look up for the file/document.
      *
-     * @param string $fileId unique ID, Represent a single file and URL safe.
+     * @param  string  $fileId  unique ID, Represent a single file and URL safe.
      *
      * @throws \Symfony\Component\HttpKernel\Exception\NotFoundHttpException
      */
@@ -271,46 +271,100 @@ public function generateUrl(string $lang = 'en-Us'): string
 
     public function getUrlForAction(string $action, string $lang = 'en-US'): string
     {
-        /** @var ConfigRepositoryInterface */
-        $config = app(ConfigRepositoryInterface::class);
-
-        $lang = empty($lang) ? $config->getDefaultUiLang() : $lang;
-
         $extension = method_exists($this, 'extension')
             ? Str::replaceFirst('.', '', $this->extension())
             : pathinfo($this->basename(), PATHINFO_EXTENSION);
 
+        $actionUrl = optional(Discovery::discoverAction($extension, $action));
+
         $url = route('wopi.checkFileInfo', [
             'file_id' => $this->id(),
         ]);
 
-        // todo handle microsoft office 365 <> placeholders
-        // example https://FFC-onenote.officeapps.live.com/hosting/WopiTestFrame.aspx?<ui=UI_LLCC&><rs=DC_LLCC&><dchat=DISABLE_CHAT&><hid=HOST_SESSION_ID&><sc=SESSION_CONTEXT&><wopisrc=WOPI_SOURCE&><IsLicensedUser=BUSINESS_USER&><testcategory=VALIDATOR_TEST_CATEGORY>
+        /** @var ConfigRepositoryInterface */
+        $config = app(ConfigRepositoryInterface::class);
 
-        $actionUrl = optional(Discovery::discoverAction($extension, $action));
+        $lang = empty($lang) ? $config->getDefaultUiLang() : $lang;
 
         if (is_null($actionUrl['urlsrc'])) {
             throw new Exception("Unsupported action \"{$action}\" for \"{$extension}\" extension.");
         }
 
+        if (str($actionUrl['urlsrc'])->contains('officeapps.live.com')) {
+            return $this->processMicrosoftOffice365Url($actionUrl['urlsrc'], $url);
+        }
+
         return "{$actionUrl['urlsrc']}lang={$lang}&WOPISrc={$url}";
     }
 
+    protected function processMicrosoftOffice365Url(string $url, string $wopiSrc): string
+    {
+        /** @var ConfigRepositoryInterface */
+        $config = app(ConfigRepositoryInterface::class);
+
+        $lang = empty($lang) ? $config->getDefaultUiLang() : $lang;
+
+        $url = str($url);
+
+        // extract all placeholders <PLACEHOLDER_VALUE&> or <PLACEHOLDER_VALUE>
+        // https://excel.officeapps.live.com/x/_layouts/xlviewerinternal.aspx?<ui=UI_LLCC&><rs=DC_LLCC&><dchat=DISABLE_CHAT&><hid=HOST_SESSION_ID&><sc=SESSION_CONTEXT&><wopisrc=WOPI_SOURCE&><IsLicensedUser=BUSINESS_USER&><actnavid=ACTIVITY_NAVIGATION_ID&>
+
+        $reqiredReplaceMap = [
+            'UI_LLCC' => $lang,
+            'DC_LLCC' => $lang,
+            'WOPI_SOURCE' => $wopiSrc,
+        ];
+
+        // extract it form the url and remove the required from them
+        $otherReplaceMap = config('wopi.microsoft_365_url_placeholder_value_map', []);
+
+        preg_match_all('/<([^>]*)>/', $url, $matches);
+
+        collect($matches[1])
+        // filter out nulls and falsy values
+            ->filter()
+            ->each(function (string $queryParamWithPlaceholder) use (&$url, &$reqiredReplaceMap, &$otherReplaceMap) {
+
+                foreach ($reqiredReplaceMap as $placeholder => $value) {
+                    if (str($queryParamWithPlaceholder)->contains($placeholder)) {
+                        $url = str($url)->replace($placeholder, $value);
+
+                        return;
+                    }
+                }
+
+                foreach ($otherReplaceMap as $placeholder => $value) {
+                    if (str($queryParamWithPlaceholder)->contains($placeholder)) {
+                        $url = str($url)->replace($placeholder, $value);
+
+                        return;
+                    }
+                }
+
+                // remove the rest of <PLACEHOLDER_VALUE> if not found
+                $url = str($url)->replace('<'.$queryParamWithPlaceholder.'>', '');
+            });
+
+        return $url->replace(['<', '>'], '')
+            ->replaceLast('&', '')
+            ->toString();
+    }
+
     /**
      * Get CheckfileInfo response proprites based
      * on implemented interfaces/features.
      */
     public function getResponseProprties(): array
     {
-        return  collect(static::$propertyMethodMapping)
-                ->flatMap(function (string $methodName, string $propertyName) {
-                    if (method_exists($this, $methodName)) {
-                        return [
-                             $propertyName => $this->$methodName(),
-                        ];
-                    }
-                })
-                ->filter(fn ($value) => $value !== null)
-                ->toArray();
+        return collect(static::$propertyMethodMapping)
+            ->flatMap(function (string $methodName, string $propertyName) {
+                if (method_exists($this, $methodName)) {
+                    return [
+                        $propertyName => $this->$methodName(),
+                    ];
+                }
+            })
+            ->filter(fn ($value) => $value !== null)
+            ->toArray();
     }
 }