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5 Commits

Author SHA1 Message Date
n07070
e78f811904 Update numpy 2026-05-20 16:34:57 +02:00
n07070
0f848ba790 Add an alert if the webcam print fails 2026-05-20 16:34:45 +02:00
n07070
24260834ff Update printing routes for the form 2026-05-20 16:34:33 +02:00
n07070
306cab6606 Fix error flashing and transmission 2026-05-20 16:34:01 +02:00
n07070
26c2de12b6 Add new web route, restructure API route 2026-05-20 13:29:23 +02:00
6 changed files with 251 additions and 156 deletions

146
poetry.lock generated
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@@ -886,84 +886,84 @@ files = [
[[package]]
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version = "2.4.6"
description = "Fundamental package for array computing in Python"
optional = false
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groups = ["main"]
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[[package]]

View File

@@ -85,7 +85,7 @@ except PermissionError:
exit(77)
# Output the config file
if os.getenv("LIPY_DEBUG") is True:
if os.getenv("FLASK_DEBUG"):
pprint.pprint(configuration_file)
# We define the app module used by Flask
@@ -98,6 +98,9 @@ app.config["TEMPLATES_AUTO_RELOAD"] = True
# Printer connection
# Uses the class defined in the printer.py file
printer = Printer(app, 0x04B8, 0x0E28)
# printers = Printer(app)
# printers.discover_printers()
# printers.init()
printer.init_printer()
# Find out if we are running on a Raspberry Pi
@@ -141,6 +144,80 @@ def webcam():
app.logger.debug("Loading webcam interface")
return render_template("webcam.html")
@app.route("/web/print/sms", methods=["POST"])
@limiter.limit("6/minute", override_defaults=False)
def web_print_sms():
"""Prints a short message on a printer"""
app.logger.debug("Printing an sms via web method")
try:
txt = request.form["txt"]
except werkzeug.exceptions.BadRequestKeyError as e:
app.logger.error("Whoops, we are missing the txt input field. : %s ", str(e))
flash("Whoops, no forms submitted or missing signature : " + str(e), 'error')
return redirect(url_for("index"))
try:
# comment: We try to get a signature
sign = request.form["signature"]
except werkzeug.exceptions.BadRequestKeyError as e:
app.logger.warning(
"No signature found for this print, using default signature.", str(e)
)
sign = configuration_file["defaults"]["signature"]
try:
web.print_sms(txt, sign)
except Exception as e:
app.logger.error("Whoops, we could not print an SMS because : %s ", str(e))
flash("Whoops, we could not print an SMS because :" + str(e), 'error')
return redirect(url_for("index"))
# end try
flash("The SMS has been printed !", 'info')
return redirect(url_for("index"))
@app.route("/web/print/img", methods=["POST"])
@limiter.limit("1/second", override_defaults=False)
def web_print_img():
"""Prints an image on a printer"""
app.logger.debug("Printing an image with web method")
try:
# comment: We try to get a signature
sign = request.form["signature"]
except werkzeug.exceptions.BadRequestKeyError as e:
app.logger.warning(
"No signature found for this print, using default signature.", str(e)
)
sign = configuration_file["defaults"]["signature"]
# check if the post request has the file part
if "img" not in request.files:
app.logger.error("Whoops, no images submitted : %s ", str(e))
app.logger.error("Error getting the files : %s", str(e))
flash("Whoops, no images submitted : " + str(e), 'error')
return redirect(url_for("index"))
file = request.files["img"]
# 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("Submitted file has no filename !", 'error')
return redirect(url_for("index"))
try:
app.logger.debug("Sending the image to the printer.")
web.print_image(file, sign)
except Exception as e:
app.logger.error("The image could not be printed because : %s ", str(e))
flash("The image could not be printed because : " + str(e), 'error')
return redirect(url_for("index"))
flash("Picture printed !", 'info')
return redirect(url_for("index"))
# API routes
# The api has the following methods
@@ -163,76 +240,64 @@ def api_index():
@limiter.limit("6/minute", override_defaults=False)
def api_print_sms():
"""Prints a short message on a printer"""
app.logger.debug("Printing an sms")
app.logger.debug("Printing an sms via API")
try:
txt = request.form["txt"]
except werkzeug.exceptions.BadRequestKeyError as e:
app.logger.error("Whoops, we are missing the txt input field. : %s ", str(e))
flash("Whoops, no forms submitted or missing signature : %s", str(e))
return redirect(url_for("index"))
return str(e), 400
try:
# comment: We try to get a signature
sign = request.form["signature"]
except werkzeug.exceptions.BadRequestKeyError as e:
app.logger.warning(
"No signature found for this print, using default signature.", str(e)
"No signature found for this print, using default signature. : %s", str(e)
)
sign = configuration_file["defaults"]["signature"]
web.print_sms(txt, sign)
return redirect(url_for("index"))
try:
# comment: We try to print the SMS
web.print_sms(txt, sign)
except Exception as e:
return str(e), 500
# end try
return "OK", 200
@app.route("/api/print/img", methods=["POST"])
@limiter.limit("6/minute", override_defaults=False)
def api_print_image():
"""Prints an image on a printer"""
app.logger.debug("Printing an image")
app.logger.debug("Printing an image via API")
try:
# comment: We try to get a signature
sign = request.form["signature"]
except werkzeug.exceptions.BadRequestKeyError as e:
app.logger.warning(
"No signature found for this print, using default signature.", str(e)
"No signature found for this print, using default signature. %s", str(e)
)
sign = configuration_file["defaults"]["signature"]
if request.method == "POST":
# check if the post request has the file part
if "img" not in request.files:
app.logger.error("Whoops, no images submitted : %s ", str(e))
app.logger.error("Error getting the files : %s", str(e))
flash("Whoops, no images submitted : %s", str(e))
return redirect(url_for("index"))
# check if the post request has the file part
if "img" not in request.files:
app.logger.error("Whoops, no images submitted.")
return "No image submitted", 400
file = request.files["img"]
# 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("Submitted file has no filename !")
return redirect(url_for("index"))
file = request.files["img"]
# 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 !")
return "Submitted file has no filename !", 400
try:
app.logger.debug("Sending the image to the printer.")
web.print_image(file, sign)
except Exception as e:
app.logger.error("The image could not be printed because : %s ", str(e))
flash("The image could not be printed because : %s ", str(e))
return redirect(url_for("index"))
try:
app.logger.debug("Sending the image to the printer.")
web.print_image(file, sign)
except Exception as e:
return str(e), 500
else:
app.logger.error("Method not allowed")
flash("Method not allowed")
return redirect(url_for("index"))
return "OK", 200
flash("Picture printed ! ")
return redirect(url_for("index"))
@app.route("/api/camera/picture")
@app.route("/api/camera/picture", methods=["GET"])
def camera_picture():
"""Returns a picture taken by the camera"""
if RASPBERRY_PI_CONNECTED:
@@ -244,12 +309,14 @@ def camera_picture():
return jsonify({"message": "No camera present"}), 500
## Authentification
@app.route("/login")
@limiter.limit("1/second", override_defaults=False)
def login_page():
"""Unsued, logins"""
# web.login(username,password)
return redirect(url_for("index"))
return redirect(url_for("index")), 501
@app.route("/logout")
@@ -257,7 +324,7 @@ def login_page():
def logout_page():
"""Unused, logout"""
# web.logout(username, password)
return redirect(url_for("index"))
return redirect(url_for("index")), 501
@app.errorhandler(429)

View File

@@ -1,6 +1,6 @@
# Importing the module to manage the connection to the printer.
import escpos.printer as escp
import brother-ql-inventree
import escpos.printer
import brother_ql
from time import sleep, gmtime, strftime
import os.path
from PIL import Image, ImageEnhance, ImageOps
@@ -47,7 +47,7 @@ class Printer(object):
case 0:
self.app.logger.error("Printer has no more paper, aborting...")
self.printer.close()
raise Exception("No more paper in the printer")
raise RuntimeError("No more paper in the printer")
case 1:
self.app.logger.warning(
"Printer needs paper to be changed very soon ! "
@@ -60,17 +60,21 @@ class Printer(object):
def init_printer(self):
# Is the printer online ? Is the communication with the printer successfull ?
waiting_elapsed = 30
if os.getenv("FLASK_DEBUG"):
waiting_elapsed = 1
else:
waiting_elapsed = 10
self.app.logger.debug("Waiting for printer to get online...")
while not self.ready:
try:
# This also calls open(), which we need to close()
# or else the device will appear as busy.
p = escp.Usb(self.device_id, self.vendor_id, 0, profile="TM-P80")
p = escpos.printer.Usb(self.device_id, self.vendor_id, 0, profile="TM-P80")
except Exception as e:
self.app.logger.error(
"The USB device is not plugged in, trying again : " + str(e)
"The USB device is not plugged in, trying again %s : %s",waiting_elapsed, str(e)
)
pass
@@ -79,6 +83,8 @@ class Printer(object):
self.ready = True
self.app.logger.debug("Printer online !")
except Exception as e:
self.app.logger.error("Error while getting the printer online %s : %s",waiting_elapsed, str(e)
)
pass
sleep(1)
@@ -149,6 +155,7 @@ class Printer(object):
self.printer.close()
except Exception as e:
self.app.logger.error("Unable to print because : " + str(e))
raise RuntimeError("Unable to print a SMS, the printer couldn't do it.") from e
self.app.logger.info("Printed text")
return True
@@ -194,9 +201,14 @@ class Printer(object):
os.remove(path)
self.app.logger.debug("Removed image : " + str(path))
except Exception as e:
self.printer.close()
self.app.logger.error(str(e))
return False
raise RuntimeError("Could not print the picture") from e
finally:
try:
self.printer.close()
except Exception as e:
self.app.logger.error(str(e))
raise RuntimeError("Could not close the printer connexion. ") from e
self.app.logger.info("Printed a picture")
return True
@@ -285,6 +297,7 @@ def process_image(self, path):
# Convert to JPEG and save
jpeg_path = os.path.splitext(path)[0] + "_processed.jpg"
original_img.save(jpeg_path, format="JPEG", quality=95, optimize=True)
app.logger.debug("Processed and saved image.")
return jpeg_path

View File

@@ -255,7 +255,12 @@ function print_picture(data){
// headers:{
// 'Content-Type': 'multipart/form-data'
// }
}).then(function(response) { console.log('Success:', response); } , true)
}).then(function(response) {
console.log('Reponse:', response);
if(response.status != 200 ){
alert("The picture could not be printed be : " + response.statusText)
}
} , true)
.catch(error => console.error('Error:', error), false);
}

View File

@@ -5,7 +5,7 @@
<div class="card">
<h3 class="card-header">Print a short message</h3>
<div class="card-body">
<form class="form-group" action="/api/print/sms" method="post">
<form class="form-group" action="/web/print/sms" method="post">
<input class="form-control" type="text" name="txt" placeholder="200 chars or less " maxlength="200" required><br>
<input class="form-control" type="text" name="signature" placeholder="Signature or pseudo" maxlength="200"><br>
<input class="btn btn-primary float-right" type="submit" value="Imprimer" name="imprimer">
@@ -18,7 +18,7 @@
<div class="card">
<h3 class="card-header">Print an image</h3>
<div class="card-body">
<form enctype="multipart/form-data" class="form-group" action="/api/print/img" method="post">
<form enctype="multipart/form-data" class="form-group" action="/web/print/img" method="post">
<input class="form-control" type="file" name="img" required><br>
<input class="form-control" type="text" name="signature" placeholder="Signature or pseudo" maxlength="200"><br>
<input class="btn btn-primary float-right" type="submit" value="Imprimer" name="imprimer">

View File

@@ -6,51 +6,63 @@ import os
class Web(object):
"""docstring for web."""
"""Web is the class that gets all of the information from web calls ( API and Web page ) and provides checks before sending stuff to printing"""
def __init__(self, app, printer):
super(Web).__init__()
self.printer = printer
self.app = app
def print_sms(self, texte, sign: str):
# TODO: verify the texte before printing it here ?
def print_sms(self, texte, sign: str) -> bool:
"""
Get text and a signature, prints the text and cuts after that.
"""
self.app.logger.debug("Printing : " + str(texte) + " from " + str(sign))
try:
self.printer.print_sms(texte, sign)
self.printer.cut()
except Exception as e:
self.app.logger.error(e)
flash("Error while printing the SMS : " + str(e))
raise RuntimeError("Could not print SMS, " + str(e)) from e
flash("You message " + str(texte) + " has been printed :)")
return True
def print_image(self, image, sign):
self.app.logger.debug("Uploading file")
def print_image(self, image, sign: str) -> bool:
"""
Get an image and a signature, prints the image and cuts after that.
"""
try:
self.app.logger.debug("Uploading file from " + str(sign))
if self.upload_file(image):
self.app.logger.debug("File has been uploaded, printing...")
self.printer.print_img(
os.path.join(
self.app.config["UPLOAD_FOLDER"],
secure_filename(image.filename),
),
sign=sign,
process=True,
)
self.printer.cut()
self.upload_file(image)
except Exception as e:
self.app.logger.error(e)
flash("Could not upload file." + str(e))
raise RuntimeError("Could not upload file") from e
flash("Your image has been printed :)")
self.app.logger.debug("File has been uploaded, printing...")
def login(username: str, password: str) -> bool:
pass
def logout(username: str, password: str) -> bool:
pass
try:
self.printer.print_img(
os.path.join(
self.app.config["UPLOAD_FOLDER"],
secure_filename(image.filename),
),
sign=sign,
process=True,
)
self.printer.cut()
except Exception as e:
raise RuntimeError("Could not print file") from e
self.app.logger.debug("Image printed and cut !")
return True
def login(self, username: str, password: str) -> bool:
"""Not implemented"""
return
def logout(self, username: str, password: str) -> bool:
"""Not implemented"""
return
def allowed_file(self, filename) -> bool:
self.app.logger.debug("Is the filename allowed ?")
@@ -67,10 +79,8 @@ class Web(object):
self.app.logger.debug("File valid")
try:
image.save(os.path.join(self.app.config["UPLOAD_FOLDER"], filename))
self.app.logger.debug("File saved")
except Exception as e:
self.app.logger.error("Could not save file")
flash(str(e), "error")
self.app.logger.error("Could not save file %s", e)
return False
self.app.logger.debug(