feat: add shared connection capability

packages/backend/src/graphql/queries/get-app.ts

@@ -9,28 +9,55 @@ type Params = {
 const getApp = async (_parent: unknown, params: Params, context: Context) => {
   const conditions = context.currentUser.can('read', 'Connection');
 
-  const userConnections = context.currentUser.$relatedQuery('connections');
-  const allConnections = Connection.query();
-  const connectionBaseQuery = conditions.isCreator ? userConnections : allConnections;
-
   const app = await App.findOneByKey(params.key);
 
   if (context.currentUser) {
-    const connections = await connectionBaseQuery
-      .clone()
-      .select('connections.*')
+    const userConnections = context.currentUser.relatedConnectionsQuery();
+    const allConnections = Connection.query();
+    const connectionBaseQuery = conditions.isCreator ? userConnections : allConnections;
+
+    const connections = await Connection.query()
+      .with('connections', connectionBaseQuery)
+      .with(
+        'connections_with_flow_count',
+        Connection.query()
+          .clearSelect()
+          .select('connections.id')
+          .leftJoinRelated('steps')
+          .leftJoin('flows', function () {
+            this
+              .on(
+                'flows.id',
+                '=',
+                'steps.flow_id',
+              )
+
+            if (conditions.isCreator) {
+              this.andOnVal(
+                'flows.user_id',
+                '=',
+                context.currentUser.id
+              )
+            }
+          })
+          .where({
+            'connections.key': params.key,
+            'connections.draft': false,
+          })
+          .countDistinct('steps.flow_id as flowCount')
+          .groupBy('connections.id')
+      )
+      .select(
+        'connections.*',
+        'connections_with_flow_count.flowCount as flowCount'
+      )
+      .from('connections')
       .withGraphFetched({
         appConfig: true,
         appAuthClient: true
       })
-      .fullOuterJoinRelated('steps')
-      .where({
-        'connections.key': params.key,
-        'connections.draft': false,
-      })
-      .countDistinct('steps.flow_id as flowCount')
-      .groupBy('connections.id')
-      .orderBy('created_at', 'desc');
+      .joinRaw('join connections_with_flow_count on connections.id = connections_with_flow_count.id')
+      .orderBy('connections.created_at', 'desc');
 
     return {
       ...app,