feat: extensions check + resolver

server/graph/resolvers/system.js

@@ -34,7 +34,14 @@ module.exports = {
         result.push({ key, value })
       }, [])
     },
-    async info() { return {} }
+    async info () { return {} },
+    async extensions () {
+      const exts = Object.values(WIKI.extensions.ext).map(ext => _.pick(ext, ['key', 'title', 'description', 'isInstalled']))
+      for (let ext of exts) {
+        ext.isCompatible = await WIKI.extensions.ext[ext.key].isCompatible()
+      }
+      return exts
+    }
   },
   SystemMutation: {
     async updateFlags (obj, args, context) {

server/graph/schemas/system.graphql

@@ -17,6 +17,7 @@ extend type Mutation {
 type SystemQuery {
   flags: [SystemFlag] @auth(requires: ["manage:system"])
   info: SystemInfo
+  extensions: [SystemExtension]! @auth(requires: ["manage:system"])
 }
 
 # -----------------------------------------------
@@ -112,3 +113,11 @@ type SystemImportUsersResponseFailed {
   email: String
   error: String
 }
+
+type SystemExtension {
+  key: String!
+  title: String!
+  description: String!
+  isInstalled: Boolean!
+  isCompatible: Boolean!
+}