🐛 api now waits for all connected inputs to have value

package.json

@@ -1,6 +1,6 @@
 {
   "name": "graphfx",
-  "version": "0.4.3",
+  "version": "0.4.4",
   "description": "Graph image processing pipeline",
   "main": "src/index.ts",
   "scripts": {

src/nodes/Api.ts

@@ -84,7 +84,7 @@ export default class Api extends Node<typeof inputs, typeof outputs> {
     }
 
     async _update() {
-        if (!this.in.url.value) {
+        if (!this.canUpdate()) {
             return;
         }
 
@@ -102,6 +102,31 @@ export default class Api extends Node<typeof inputs, typeof outputs> {
         }
     }
 
+    private canUpdate(): boolean {
+        if (!this.in.url.value) {
+            return false
+        }
+
+        const inputs = [
+            'image0',
+            'image1',
+            'image2',
+            'image3',
+            'image4',
+            'image5',
+            'image6',
+            'image7',
+        ]
+
+        for(const input of inputs) {
+            if (this.in[input].output && !this.in[input].value) {
+                return false
+            }
+        }
+
+        return true;
+    }
+
     private async upload(): Promise<HTMLImageElement | undefined> {
         const formData = await this.createFormData();