Remove printer import, remove vendor&device configuration, update

print_queue

src/main.py

@@ -36,7 +36,6 @@ import werkzeug.exceptions
 from flask_socketio import SocketIO
 from flask_limiter import Limiter
 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
@@ -73,11 +72,7 @@ except OSError as e:
 
 app.logger.debug("Config file loaded !")
 
-# Define the USB connections here.
-vendor_id = configuration_file["printer"]["vendor_id"]
-device_id = configuration_file["printer"]["device_id"]
 UPLOAD_FOLDER = str(configuration_file["printer"]["upload_folder"])
-
 try:
     os.mkdir(UPLOAD_FOLDER)
     app.logger.debug("Directory %s created successfully.", UPLOAD_FOLDER)
@@ -98,13 +93,12 @@ app.config["ALLOWED_EXTENSIONS"] = ALLOWED_EXTENSIONS
 app.config["MAX_CONTENT_LENGTH"] = 10 * 1000 * 1000  # Maximum 3Mb for a file upload
 app.config["TEMPLATES_AUTO_RELOAD"] = True
 
-# Printer connection
-# Uses the class defined in the printer.py file
-printer = Printer(app, 0x04B8, 0x0E28)
+# Queue creation
+print_queue = PrintQueue(app)
 
 # Find out if we are running on a Raspberry Pi
 rpi = Raspberry(
-    printer,
+    print_queue,
     app,
     socketio,
     configuration_file["rpi"]["button_gpio_port_number"],
@@ -112,18 +106,20 @@ rpi = Raspberry(
     configuration_file["rpi"]["flash_gpio_port_number"],
     configuration_file["rpi"]["flash"],
 )
-
 RASPBERRY_PI_CONNECTED = rpi.is_raspberry_pi()
 
-# Queue creation
-print_queue = PrintQueue(app)
 
 #  Web & API management
 web = Web(app, print_queue)
 
 # Start worker thread
-worker = PrintWorker(app, print_queue, printer, socketio)
+# When created, the worker will try to find printers connected to the system
+try:
+    worker = PrintWorker(app, print_queue, socketio)
     worker.start()
+except Exception as e:
+    app.logger.error("Could not start the worker because %s ", str(e))
+    sys.exit(-1)
 
 # The rate limit
 limiter = Limiter(
@@ -303,6 +299,7 @@ def api_print_image():
     return "OK", 200
 
 
+# TODO: This might not depend on the Raspberry Pi
 @app.route("/api/camera/picture", methods=["GET"])
 def camera_picture():
     """Returns a picture taken by the camera on a raspberry pi"""
@@ -320,6 +317,10 @@ def api_queue_status():
     """API endpoint for entire queue"""
     return jsonify(web.get_queue_state())
 
+@app.route("/api/queue/completed", methods=["GET"])
+def api_queue_completed():
+    """API endpoint that returns the finished tasks"""
+    return jsonify(web.get_queue_completed())
 
 @app.route("/api/worker", methods=["GET"])
 def api_worker_state():