[IMP] point_of_sale: Per device screen_url

The screen URL is not linked to the Box anymore but to the Device.
We don't need to fetch a screen_url at the boot, it'll be done inside
each device.

TaskID: 1893493

addons/hw_drivers/drivers/DisplayDriver.py

@@ -3,12 +3,15 @@ import json
 import logging
 import netifaces as ni
 import os
+from pathlib import Path
 import subprocess
 import threading
 import time
+import urllib3
 
 from odoo import http
-from odoo.addons.hw_drivers.controllers.driver import Driver, event_manager, iot_devices, get_odoo_server_url, get_mac_address
+from odoo.addons.hw_drivers.tools import helpers
+from odoo.addons.hw_drivers.controllers.driver import Driver, event_manager, iot_devices
 
 path = os.path.realpath(os.path.join(os.path.dirname(__file__), '../views'))
 loader = jinja2.FileSystemLoader(path)
@@ -20,13 +23,6 @@ pos_display_template = jinja_env.get_template('pos_display.html')
 
 _logger = logging.getLogger(__name__)
 
-# Get screen_url from the Box for backward compatibility
-box_url = False
-if get_odoo_server_url():
-    result = requests.get("%s/iot/box/%s/screen_url" % (get_odoo_server_url(), get_mac_address()), {})
-    if result.status_code == 200:
-        box_url = result.text
-
 
 class DisplayDriver(Driver):
     connection_type = 'display'
@@ -39,7 +35,7 @@ class DisplayDriver(Driver):
         self.event_data = threading.Event()
         self.owner = False
         self.rendered_html = ''
-        self.url = 'http://localhost:8069/point_of_sale/display/'
+        self.load_url()
 
     @property
     def device_identifier(self):
@@ -55,7 +51,9 @@ class DisplayDriver(Driver):
         return len(displays) and iot_devices[displays[0]]
 
     def action(self, data):
-        if data.get('action') == "display_refresh":
+        if data.get('action') == "update_url":
+            self.update_url(data.get('url'))
+        elif data.get('action') == "display_refresh":
             self.call_xdotools('F5')
         elif data.get('action') == "take_control":
             self.take_control(self.data['owner'], data.get('html'))
@@ -68,6 +66,37 @@ class DisplayDriver(Driver):
             }
             event_manager.device_changed(self)
 
+    def run(self):
+        while True:
+            if self.url != 'http://localhost:8069/point_of_sale/display/':
+                # Refresh the page every minute
+                time.sleep(60)
+                self.call_xdotools('F5')
+
+    def update_url(self, url=None):
+        firefox_env = os.environ.copy()
+        firefox_env['HOME'] = '/tmp'
+        firefox_env['DISPLAY'] = ':0.0'
+        firefox_env['XAUTHORITY'] = '/run/lightdm/pi/xauthority'
+        self.url = url or 'http://localhost:8069/point_of_sale/display/'
+        if self.device_identifier != 'distant_display':
+            subprocess.Popen(['firefox', self.url], env=firefox_env)
+
+    def load_url(self):
+        if helpers.get_odoo_server_url():
+            # disable certifiacte verification
+            urllib3.disable_warnings()
+            http = urllib3.PoolManager(cert_reqs='CERT_NONE')
+            try:
+                response = http.request('GET', "%s/iot/box/%s/screen_url" % (helpers.get_odoo_server_url(), helpers.get_mac_address()))
+                urls = json.loads(response.data.decode('utf8'))
+                return self.update_url(urls[self.device_identifier])
+            except json.decoder.JSONDecodeError:
+                return self.update_url(response.data.decode('utf8'))
+            except Exception:
+                pass
+        return self.update_url()
+
     def call_xdotools(self, keystroke):
         os.environ['DISPLAY'] = ":0.0"
         os.environ['XAUTHORITY'] = "/run/lightdm/pi/xauthority"

addons/point_of_sale/tools/posbox/overwrite_after_init/etc/xdg/openbox/autostart

@@ -1,30 +0,0 @@
-#!/bin/bash
-xset s off
-xset -dpms
-
-export HOME=/tmp
-
-DISPLAY_URL='http://localhost:8069/point_of_sale/display'
-URL=${DISPLAY_URL}
-
-maciotbox=$(/sbin/ifconfig eth0 |grep -Eo ..\(\:..\){5})
-
-if [ -e /home/pi/odoo-remote-server.conf ]
-	then
-	URL_SERVER=$(grep "" /home/pi/odoo-remote-server.conf)/iot/box/${maciotbox}/screen_url
-	var=0
-	while [ ${var} -lt 30 ]; do
-		var=$((var+1))
-		sleep 1
-		status_code=$(wget ${URL_SERVER} --server-response 2>&1|grep 'HTTP/'|awk '{print $2}')
-		if [ ${status_code} -eq 200 ]
-		then
-			URL=$(wget ${URL_SERVER} -q -O -)
-			break
-		fi
-	done
-fi
-# wait until odoo is ready, otherwise you will have to plug a
-# keyboard into the posbox just to refresh firefox
-until wget -q "${DISPLAY_URL}" -O /dev/null ; do sleep 1 ; done
-/usr/bin/firefox "${URL}" &