try to read var from config

tasks/main.yml

@@ -42,6 +42,25 @@
     virtualenv_command: virtualenv
     virtualenv_python: /usr/bin/python3
 
+- name: Check if the bridge is already configured
+  stat:
+    path: /opt/mautrix-facebook/config.yaml
+  register: register_config
+
+- name: Set read token variable
+  block:
+    - name: read config file
+      slurp:
+        src: /opt/mautrix-facebook/config.yaml
+      register: encoded_facebook_config
+    - name: decode config file
+      set_fact:
+        facebook_config: "{{ encoded_facebook_config.content | b64decode | from_yaml }}"
+    - name: print config
+      debug:
+        msg: "{{ facebook_config }}"
+  when: register_config.stat.exists
+
 - name: Configure the bridge
   template:
     src: config.yaml