Add information on contributions

README.md

@@ -61,6 +61,12 @@ This command should start a web server with which you can test your configuratio
 
 Voilà !
 
+## Contributions
+
+Your contributions are very much welcome ! You can either request an account on git.n07070.xyz, or send me a patch by email ( see git-send-mail.io ). Please [squash](https://www.geeksforgeeks.org/git/use-of-git-squash-commits/) yours commits into one commit, and add as much information in the commit's description. The more you add comments and descriptions, the better it is.
+
+Please also say if you had a printer to test your code, and which printer you've been using.
+
 ## Screenshots
 
 ![](src/static/images/homepage.png)

requirements.txt

@@ -1,31 +1,36 @@
-Adafruit-Thermal~=1.1.0
-appdirs~=1.4.4
-argcomplete~=2.0.0
-click~=8.1.3
-commonmark~=0.9.1
-Deprecated~=1.2.13
-escpos~=2.0.0
-Flask~=2.1.2
-Flask-Limiter~=2.4.5.1
-future~=0.18.2
-itsdangerous~=2.1.2
-Jinja2~=3.1.2
-limits~=2.6.1
-MarkupSafe~=2.1.1
-packaging~=21.3
-Pillow
-Pygments~=2.12.0
-pyparsing~=3.0.8
-pyserial~=3.5
-python-barcode~=0.13.1
-pyusb~=1.2.1
-PyYAML~=6.0
-qrcode~=7.3.1
-rich~=12.4.1
-six~=1.16.0
-toml~=0.10.2
-typing_extensions~=4.2.0
-Unidecode~=1.3.4
-viivakoodi~=0.8.0
-Werkzeug~=2.1.2
-wrapt~=1.14.1
+Adafruit_Thermal==1.1.0
+appdirs==1.4.4
+argcomplete==2.0.6
+cffi==1.17.1
+click==8.1.8
+commonmark==0.9.1
+cryptography==45.0.4
+Deprecated==1.2.18
+escpos==2.0.0
+Flask==2.1.3
+Flask-Limiter==2.4.5.1
+future==0.18.3
+itsdangerous==2.1.2
+Jinja2==3.1.6
+limits==2.6.3
+MarkupSafe==2.1.5
+numpy==2.3.0
+packaging==21.3
+pillow==11.2.1
+pycparser==2.22
+Pygments==2.12.0
+pyparsing==3.0.9
+pyserial==3.5
+python-barcode==0.13.1
+pyusb==1.2.1
+PyYAML==6.0.2
+qrcode==7.3.1
+rich==12.4.4
+setuptools==80.9.0
+six==1.16.0
+toml==0.10.2
+typing_extensions==4.2.0
+Unidecode==1.3.8
+viivakoodi==0.8.0
+Werkzeug==2.1.2
+wrapt==1.14.1

src/main.py

@@ -40,6 +40,16 @@ 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(f"Directory '{UPLOAD_FOLDER}' created successfully.")
+except FileExistsError:
+    app.logger.error(f"Directory '{UPLOAD_FOLDER}' already exists.")
+except PermissionError:
+    app.logger.error(f"Permission denied: Unable to create '{UPLOAD_FOLDER}'.")
+except Exception as e:
+    app.logger.error(f"An error occurred: {e}")
+
 ALLOWED_EXTENSIONS = {'png', 'jpg', 'jpeg', 'gif'}
 
 # Output the config file
@@ -61,6 +71,9 @@ printer.init_printer()
 # Web routes
 web = Web(app, printer)
 
+if __name__ == "__main__":
+    app.run(ssl_context='adhoc')
+
 
 limiter = Limiter(
     app,
@@ -103,15 +116,16 @@ def api_print_sms():
         txt = request.form["txt"]
         sign = request.form["signature"]
     except Exception as e:
-        flash(e,'error')
-        redirect(url_for('index'))
+        app.logger.error(str(e) + " - Whoops, no forms submitted or missing signature.")
+        return jsonify({'message': 'Error getting the information from the form :' + e}), 500
 
     try:
         web.print_sms(txt,sign)
     except Exception as e:
-        pass
+        return jsonify({'message': 'Error printing the SMS:' + e}), 500
 
-    return redirect(url_for('index'))
+
+    return jsonify({'message': 'Message printed'}), 200
 
 @app.route('/api/print/img', methods=['POST'])
 @limiter.limit("6/minute", override_defaults=False)
@@ -121,43 +135,41 @@ def api_print_image():
     try:
         sign = request.form["signature"]
     except Exception as e:
-        flash(str(e),'error')
         app.logger.error(str(e) + " - Whoops, no forms submitted or missing signature.")
-        return redirect(url_for('index'))
+        return jsonify({'message': 'Error getting the information from the form :' + e}), 500
+
 
     if request.method == 'POST':
         # check if the post request has the file part
         try:
             if 'img' not in request.files:
-                flash('No file found. Did you use the good form ?', 'error')
                 app.logger.error("No file found. Did you use the good form ?")
-                return redirect(url_for("index"))
+                return jsonify({'message': 'No file found. Did you use the good form ?'}), 500
             else:
                 file = request.files['img']
         except Exception as e:
-            if sign is not None and photo is not None:
-                pass
-            else:
-                flash(str(e), 'error')
-                app.logger.error("Couldn't get an image nor signature : " + str(e))
+            app.logger.error('Error getting the files :' + e)
+            return jsonify({'message': 'Error getting the files :' + e}), 500
 
         # If the user does not select a file, the browser submits an
         # empty file without a filename.
         if file.filename == '':
             app.logger.error("Submitted file has no filename !")
-            flash('No file submitted, please select a file','error')
-            return redirect(url_for("index"))
+            return jsonify({'message': "Submitted file has no filename !" + e}), 500
 
         try:
             app.logger.debug("Sending the image to the printer.")
             web.print_image(file, sign)
         except Exception as e:
-            pass
-    else:
-        flash('Cannot access to page with this method.','error')
-        app.logger.debug('Bad access type to this API.')
+            app.logger.error("The image could not be printed : " + e )
+            return jsonify({'message': "The image could not be printed :" + e}), 500
+
+    else:
+        return jsonify({'message': "Method Not Allowed, please POST"}), 403
+        app.logger.debug('Bad access type to this API, please POST')
+
+    return jsonify({'message': 'Message printed'}), 200
 
-    return redirect(url_for("index"))
 
 @app.route('/login')
 @limiter.limit("1/second", override_defaults=False)
@@ -174,10 +186,12 @@ def logout_page():
 @app.errorhandler(429)
 def ratelimit_handler(e):
     flash("Rate limit reached, please slow down :) ( Currently at "+ e.description + ")", 'error')
+    app.logger.debug('Rate limit reached ' + e)
     return redirect(url_for("index"))
 
 @app.route("/ping")
 @limiter.exempt
 def ping():
     flash("🏓 Pong !",'info')
+    app.logger.debug('🏓 Pong !')
     return redirect(url_for("index"))

src/printer.py

@@ -177,7 +177,7 @@ class Printer(object):
 def process_image(self, path):
     brightness_factor = 1.5  # Used only if image is too dark
     brightness_threshold = 150  # Brightness threshold (0–255)
-    contrast_factor = 0.8         # Less than 1.0 = lower contrast
+    contrast_factor = 1.2         # Less than 1.0 = lower contrast
     max_width = 575
     max_height = 1000
 

src/static/js/webcam.js

@@ -190,6 +190,9 @@ async function get_webcam(options){
       printButton.removeAttribute("disabled","");
       current_stream = stream;
       video.srcObject = stream;
+      video.setAttribute('autoplay', '');
+      video.setAttribute('muted', '');
+      video.setAttribute('playsinline', '')
       video.play();
       return true;
     })

src/templates/webcam.html

@@ -27,11 +27,6 @@
 						  <path d="M15 12a1 1 0 0 1-1 1H2a1 1 0 0 1-1-1V6a1 1 0 0 1 1-1h1.172a3 3 0 0 0 2.12-.879l.83-.828A1 1 0 0 1 6.827 3h2.344a1 1 0 0 1 .707.293l.828.828A3 3 0 0 0 12.828 5H14a1 1 0 0 1 1 1v6zM2 4a2 2 0 0 0-2 2v6a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V6a2 2 0 0 0-2-2h-1.172a2 2 0 0 1-1.414-.586l-.828-.828A2 2 0 0 0 9.172 2H6.828a2 2 0 0 0-1.414.586l-.828.828A2 2 0 0 1 3.172 4H2z"/>
 						  <path d="M8 11a2.5 2.5 0 1 1 0-5 2.5 2.5 0 0 1 0 5zm0 1a3.5 3.5 0 1 0 0-7 3.5 3.5 0 0 0 0 7zM3 6.5a.5.5 0 1 1-1 0 .5.5 0 0 1 1 0z"/>
 						</svg>
-						<b>&</b>
-						<svg xmlns="http://www.w3.org/2000/svg" width="54" height="54" fill="currentColor" class="bi bi-printer" viewBox="0 0 16 16">
-						  <path d="M2.5 8a.5.5 0 1 0 0-1 .5.5 0 0 0 0 1z"/>
-						  <path d="M5 1a2 2 0 0 0-2 2v2H2a2 2 0 0 0-2 2v3a2 2 0 0 0 2 2h1v1a2 2 0 0 0 2 2h6a2 2 0 0 0 2-2v-1h1a2 2 0 0 0 2-2V7a2 2 0 0 0-2-2h-1V3a2 2 0 0 0-2-2H5zM4 3a1 1 0 0 1 1-1h6a1 1 0 0 1 1 1v2H4V3zm1 5a2 2 0 0 0-2 2v1H2a1 1 0 0 1-1-1V7a1 1 0 0 1 1-1h12a1 1 0 0 1 1 1v3a1 1 0 0 1-1 1h-1v-1a2 2 0 0 0-2-2H5zm7 2v3a1 1 0 0 1-1 1H5a1 1 0 0 1-1-1v-3a1 1 0 0 1 1-1h6a1 1 0 0 1 1 1z"/>
-						</svg>
 					</button>
 					<button class="col-sm col-lg-3 offset-lg-2 btn btn-secondary justify-content-center" name="flip" id="flip" data-bs-toggle="tooltip" data-bs-placement="top" title="Change camera" disabled="">
 						<svg xmlns="http://www.w3.org/2000/svg" width="54" height="54" fill="currentColor" class="bi bi-arrow-repeat" viewBox="0 0 16 16">