From 63bf88ac6652f0da20ff55b15674e6759dffff27 Mon Sep 17 00:00:00 2001
From: Oliver Walters <oliver.henry.walters@gmail.com>
Date: Fri, 25 Mar 2022 22:53:36 +1100
Subject: [PATCH] Adds a function to return a list of plugins which support a
 specified mixin

---
 lib/api.dart | 31 ++++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 deletions(-)

diff --git a/lib/api.dart b/lib/api.dart
index 1574b6b6..4c326879 100644
--- a/lib/api.dart
+++ b/lib/api.dart
@@ -235,7 +235,28 @@ class InvenTreeAPI {
   // Returns True only if the server API version is new enough, and plugins are enabled
   bool pluginsEnabled() => apiVersion >= 34 && _pluginsEnabled;
 
-  List<InvenTreePlugin> plugins = [];
+  // Cached list of plugins (refreshed when we connect to the server)
+  List<InvenTreePlugin> _plugins = [];
+
+  // Return a list of plugins enabled on the server
+  // Can optionally filter by a particular 'mixin' type
+  List<InvenTreePlugin> getPlugins({String mixin = ""}) {
+    List<InvenTreePlugin> plugins = [];
+
+    for (var plugin in _plugins) {
+      // Do we wish to filter by a particular mixin?
+      if (mixin.isNotEmpty) {
+        if (!plugin.supportsMixin(mixin)) {
+          continue;
+        }
+      }
+
+      plugins.add(plugin);
+    }
+
+    // Return list of matching plugins
+    return plugins;
+  }
 
   // Getter for server version information
   String get version => _version;
@@ -305,7 +326,7 @@ class InvenTreeAPI {
     _BASE_URL = address;
 
     // Clear the list of available plugins
-    plugins.clear();
+    _plugins.clear();
 
     print("Connecting to ${apiUrl} -> username=${username}");
 
@@ -486,7 +507,7 @@ class InvenTreeAPI {
 
     // The server does not support plugins, or they are not enabled
     if (!pluginsEnabled()) {
-      plugins.clear();
+      _plugins.clear();
       return;
     }
 
@@ -497,12 +518,12 @@ class InvenTreeAPI {
       if (result is InvenTreePlugin) {
         if (result.active) {
           // Only add plugins that are active
-          plugins.add(result);
+          _plugins.add(result);
         }
       }
     }
 
-    print("Discovered ${plugins.length} active plugins!");
+    print("Discovered ${_plugins.length} active plugins!");
   }