Restructure main class to activate worker and use tasks, print queue,

update Printer

src/main.py

@@ -23,6 +23,7 @@ import sys
 import os  # For VARS from the shell.
 import pprint  # To pretty print JSON
 import toml  # Used for the config file parsing
+import threading
 from flask import (
     Flask,
     request,
@@ -39,11 +40,15 @@ from flask_limiter.util import get_remote_address
 from printer import Printer  # The wrapper for the printer class
 from raspberry import Raspberry  # The Raspberry pi control Class
 from web import Web  # Wrapper for the web routes and API
+from print_queue import PrintQueue
+from worker import PrintWorker
 
-# Variables
 
+# We create the main Flask object
 app = Flask(__name__)
-socketio = SocketIO(app)
+socketio = SocketIO(app, cors_allowed_origins="*")
+
+# Global variables
 ALLOWED_EXTENSIONS = {"png", "jpg", "jpeg", "gif", "webp"}
 
 # Load the configuration file
@@ -116,18 +121,21 @@ rpi = Raspberry(
 
 RASPBERRY_PI_CONNECTED = rpi.is_raspberry_pi()
 
+# Queue creation
+print_queue = PrintQueue(app)
 
 #  Web & API  routes
+web = Web(app, print_queue)
 
-web = Web(app, printer)
-
-if __name__ == "__main__":
-    app.run(debug=True, use_reloader=False, host="0.0.0.0", ssl_context="adhoc")
+# Start worker thread
+worker = PrintWorker(app, print_queue, printer, socketio)
+worker.start()
 
 limiter = Limiter(
     get_remote_address, app=app, default_limits=["1500 per day", "500 per hour"]
 )
 
+# General routes
 
 @app.route("/")
 @limiter.limit("1/second", override_defaults=False)
@@ -144,6 +152,8 @@ def webcam():
     app.logger.debug("Loading webcam interface")
     return render_template("webcam.html")
 
+# Form treatement
+
 @app.route("/web/print/sms", methods=["POST"])
 @limiter.limit("6/minute", override_defaults=False)
 def web_print_sms():
@@ -299,7 +309,7 @@ def api_print_image():
 
 @app.route("/api/camera/picture", methods=["GET"])
 def camera_picture():
-    """Returns a picture taken by the camera"""
+    """Returns a picture taken by the camera on a raspberry pi"""
     if RASPBERRY_PI_CONNECTED:
         try:
             return rpi.camera_picture()
@@ -308,6 +318,26 @@ def camera_picture():
     else:
         return jsonify({"message": "No camera present"}), 500
 
+@app.route('/api/queue', methods=["GET"])
+def api_queue_status():
+    """API endpoint for entire queue"""
+    return jsonify(web.get_queue_state())
+
+@app.route('/api/worker', methods=["GET"])
+def api_worker_state():
+    """API endpoint to get the worker state"""
+    return jsonify(worker.current_state())
+
+@app.route('/api/worker/start')
+def api_worker_start():
+    worker.start_worker()
+    return jsonify(worker.current_state())
+
+@app.route('/api/worker/stop')
+def api_worker_stop():
+    worker.stop_worker()
+    return jsonify(worker.current_state())
+
 
 ## Authentification
 
@@ -362,3 +392,6 @@ def camera_status():
         socketio.emit("camera_status", True)
     else:
         socketio.emit("camera_status", False)
+
+if __name__ == "__main__":
+    app.run(debug=True, use_reloader=False, host="0.0.0.0", ssl_context="adhoc")