src/main.py

@@ -7,16 +7,11 @@
 # Then we build the web interface, using the simple Jinja2 templating.
 
 # Following are the librairies we import,
-from flask import Flask, request, render_template, flash, abort, redirect, url_for, make_response, jsonify       # Used for the web framework
+from flask import Flask, request         # Used for the web framework
-from flask_limiter import Limiter
-from flask_limiter.util import get_remote_address
 from printer import Printer     # The wrapper for the printer class
-from web import Web                     # Wrapper for the web routes and API
 import toml                     # Used for the config file parsing
-import pprint                           # To pretty print JSON
+import pprint
-import time                             # To sleep
+import time
-import os                               # For VARS from the shell.
-# Variables
 
 # Load the configuration file
 try:
@@ -30,12 +25,6 @@ except toml.TomlDecodeError:
 except Exception as e:
     print("Error while loading file : " + str(e))
 
-# Define the USB connections here.
-vendor_id = configuration_file["printer"]["vendor_id"]
-device_id = configuration_file["printer"]["device_id"]
-
-# Output the config file
-if os.getenv('LIPY_DEBUG') == True:
 pprint.pprint(configuration_file)
 
 # We define the app module used by Flask
@@ -45,24 +34,16 @@ app.secret_key = configuration_file["secrets"]["flask_secret_key"]
 
 # Printer connection
 # Uses the class defined in the printer.py file
+
+# Define the USB connections here.
+vendor_id = configuration_file["printer"]["vendor_id"]
+device_id = configuration_file["printer"]["device_id"]
+
 printer = Printer(app,0x04b8, 0x0e28)
 printer.init_printer()
 
-# Web routes
-web = Web(app, printer)
 
 
-limiter = Limiter(
-    app,
-    key_func=get_remote_address,
-    default_limits=["200 per day", "50 per hour"]
-)
-
-@app.route('/')
-@limiter.limit("1/second", override_defaults=False)
-def index():
-    return render_template('index.html')
-
 # API routes
 # The api has the following methods
 # api/print/{sms,img,letter,qr,barcode}
@@ -70,50 +51,22 @@ def index():
 # api/status/{paper,ping,stats}
 
 # If you just call the api route, you get a help back.
+@app.route('/')
+def index():
+    return "Welcome ! Please type your message in the URL bar in such way : /api/print/sms?txt=<message here>"
+
+
 @app.route('/api')
+def api_help():
+    return "Welcome to the API's help page"
+
 @app.route('/api/print')
-@limiter.limit("1/second", override_defaults=False)
 def api_index():
-    return render_template("api.html")
+    return "Welcome to the printing software's API. Please see the index page to get started."
 
-
+@app.route('/api/print/sms', methods=['GET'])
-@app.route('/api/print/sms', methods=['POST'])
-@limiter.limit("2/minute", override_defaults=False)
 def api_print_sms():
-    try:
+    texte = request.args.get("txt",type=str)
-        txt = request.form["txt"]
+    app.logger.debug("Printing : " + texte)
-        sign = request.form["signature"]
+    time.sleep(10)
-    except Exception as e:
+    return  printer.print_sms(texte)
-        flash(e)
-        redirect(url_for('index'))
-
-    flash(web.print_sms(txt,sign))
-    return redirect(url_for('index'))
-
-@app.route('/api/print/image', methods=['POST'])
-@limiter.limit("2/minute", override_defaults=False)
-def api_print_image():
-    flash(web.print_image())
-    return "print image"
-
-@app.route('/login')
-@limiter.limit("1/second", override_defaults=False)
-def login_page():
-    # web.login(username,password)
-    return render_template("index.html")
-
-@app.route('/logout')
-@limiter.limit("1/second", override_defaults=False)
-def logout_page():
-    # web.logout(username, password)
-    return render_template("index.html")
-
-@app.errorhandler(429)
-def ratelimit_handler(e):
-    flash("Rate limit reached, please slow down :) ( Currently at "+ e.description + ")", 'error')
-    return render_template('index.html')
-
-@app.route("/ping")
-@limiter.exempt
-def ping():
-    return "PONG"

src/printer.py

@@ -1,5 +1,4 @@
 # Importing the module to mage the connection to the printer.
-from flask import flash
 from escpos.printer import Usb, USBNotFoundError
 from time import sleep, gmtime, strftime
 import os.path
@@ -36,27 +35,6 @@ class Printer(object):
         self.usb_args['idVendor'] = self.device_id
         self.usb_args['idProduct'] = self.vendor_id
 
-    def check_paper(self) -> bool:
-        # Let's check paper status
-        self.app.logger.debug('Checking paper status...')
-        self.printer.open(self.usb_args)
-        status = self.printer.paper_status()
-        match status:
-            case 0:
-                self.app.logger.error('Printer has no more paper, aborting...')
-                flash("No more paper on the printer. Sorry.",category='error')
-                self.printer.close()
-                return False
-            case 1:
-                self.app.logger.warning('Printer needs paper to be changed very soon ! ')
-                flash('Printer needs paper to be changed very soon ! ', category='info')
-                self.printer.close()
-                return True
-            case 2:
-                self.app.logger.debug('Printer has paper, good to go')
-                self.printer.close()
-                return True
-
     def init_printer(self):
 
         # Is the printer online ? Is the communication with the printer successfull ?
@@ -75,7 +53,6 @@ class Printer(object):
             try:
                 if p.is_online():
                     self.ready = True
-                    self.app.logger.debug('Printer online !')
             except Exception as e:
                 pass
 
@@ -87,48 +64,40 @@ class Printer(object):
                 return False
 
 
-
+        # Let's check paper status.
+        ps = p.paper_status()
+        if ps == 0:
+            self.app.logger.error('Printer has no more paper, aborting...')
+            return False
+        elif ps == 1:
+            self.app.logger.warning('Printer needs paper to be changed very soon ! ')
+            sleep(5)
+        elif ps == 2:
+            self.app.logger.debug('Printer has paper, good to go')
 
         # Setting up the printing options.
         p.set(align='center', font='a', bold=False, underline=0, width=1, height=1, density=9, invert=False, smooth=False, flip=False, double_width=False, double_height=False, custom_size=False)
-        # Beware : if we print every time the printer becomes ready, it means
+        # Beware : if we print this every time the printer becomes ready, it means
         # we are printing before and after every print !
-        self.printer = p
+
+        self.printer = p;
         self.ready = True;
         self.printer.close();
-
-        if not self.check_paper():
-            return False
-
         return True
 
-    def print_sms(self, msg, signature) -> bool:
+    def print_sms(self, msg):
         clean_msg = str(msg)
-        clean_signature = str(signature)
 
-        if not self.check_paper():
+        if len(clean_msg) > 256 or len(clean_msg) < 10 :
-            return False
-
-        if len(clean_msg) > 256 or len(clean_msg) < 3 :
             self.app.logger.warning("Could not print message of this length :" + str(len(clean_msg)))
-            flash("Could not print message of this length :" + str(len(clean_msg)) + ", needs to between 3 and 256 caracters long.",category='error')
+            return "Could not print message of this length :" + str(len(clean_msg)) + ", needs to be 10 < x <    256"
-            return False
+        else :
-
-        if len(signature) > 256 or len(signature) < 3:
-            self.app.logger.warning("Could not print message without a signature.")
-            flash("Could not print message without a signature.",category='error')
-            return False
-
-        if not os.getenv('LIPY_DEBUG') == True:
             self.printer.open(self.usb_args);
-            self.printer.set(align='left', font='a', bold=False, underline=0, width=1, height=1, density=8, invert=False, smooth=True, flip=False, double_width=False, double_height=False, custom_size=False)
+            self.printer.textln(strftime("%Y-%m-%d %H:%M:%S", gmtime()))
             self.printer.textln(clean_msg)
-            self.printer.set(align='left', font='b', bold=False, underline=1, width=1, height=1, density=9, invert=False, smooth=True, flip=False, double_width=False, double_height=False, custom_size=False)
-            self.printer.textln("> " + clean_signature + " @ " + strftime("%Y-%m-%d %H:%M:%S", gmtime()))
             self.printer.cut()
             self.printer.close()
-        flash("Message printed : " + clean_msg ,category='info')
+            return "Message printed : " + clean_msg
-        return True
 
     def print_img(self, path):
 

src/templates/api.html

@@ -1,10 +0,0 @@
-<!DOCTYPE html>
-<html lang="en" dir="ltr">
-  <head>
-    <meta charset="utf-8">
-    <title>LittlePrynter API</title>
-  </head>
-  <body>
-    "Welcome to the printing software's API. Please see the index page to get started.
-  </body>
-</html>

src/templates/index.html

@@ -1,60 +0,0 @@
-<!DOCTYPE html>
-<html>
-    <head>
-        <meta charset="utf-8">
-        <title>LittlePrynter</title>
-        <link rel="shortcut icon" href="{{ url_for('static', filename='favicon.ico') }}">
-        <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
-        <link href="{{ url_for('static', filename='css/bootstrap.min.css') }}" rel="stylesheet">
-        <link rel="stylesheet" href="{{ url_for('static',filename='css/style.css') }}">
-    </head>
-    <body class="container">
-        <div class="col-md-6 offset-md-3">
-            <img class="rounded" width="100px" src="{{ url_for('static', filename='images/little-printer.png') }}" alt="LittlePrynter icon"><h1 class="card-title font-weight-bold">Little Prynter</h1>
-            <hr>
-            <br>
-            {% with messages = get_flashed_messages(category_filter=('error')) %}
-              {% if messages %}
-                {% for message in messages %}
-                  <div class="alert alert-warning" role="alert">{{ message }}</div>
-                {% endfor %}
-              {% endif %}
-            {% endwith %}
-
-            {% with messages = get_flashed_messages(category_filter=('info')) %}
-              {% if messages %}
-                {% for message in messages %}
-                  <div class="alert alert-info" role="alert">{{ message }}</div>
-                {% endfor %}
-              {% endif %}
-            {% endwith %}
-
-            <!-- <br>
-            <h3>Imprimer une image aléatoire</h3>
-            <a class="btn btn-primary btn-lg" href="/api/print/image"> Imprimer</a>
-            <hr>
-            <br> -->
-            <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">
-                  <input class="form-control" type="text" name="txt" placeholder="200 chars or less " maxlength="200"><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">
-                </form>
-              </div>
-
-              <div id="pbar" style="display:none">
-                <img src="{{ url_for('static',filename='load.gif') }}" alt="loading wheel">
-              </div>
-
-            </div>
-            <br>
-            <br>
-            <hr>
-            <footer>Little Prynter is built for fun by <a href="https://n07070.xyz/about-me/">n07070</a> for fun :) </footer>
-        </div>
-    </body>
-</html>

src/user.py

@@ -1,6 +0,0 @@
-class User(object):
-    """docstring for User."""
-
-    def __init__(self, arg):
-        super(User, self).__init__()
-        self.arg = arg

src/web.py

@@ -1,29 +1,12 @@
-from flask import Flask, request
+class web(object):
-from printer import Printer
-import time
-import os
-
-class Web(object):
     """docstring for web."""
 
-    def __init__(self, app, printer ):
+    def __init__(self, arg):
-        super(Web).__init__()
+        super(web, self).__init__()
-        self.printer = printer
+        self.arg = arg
-        self.app = app
 
-    def print_sms(self, texte, sign: str):
+    def login_page():
-        # TODO: verify the texte before printing it here ?
+        return "login page"
-        self.app.logger.debug("Printing : " + str(texte))
-        if not os.getenv('LIPY_DEBUG'):
-            time.sleep(10)
 
-        return self.printer.print_sms(texte, sign)
+    def logout_page():
-
+        return "logout"
-    def print_image(self, image):
-        pass
-        
-    def login(username: str,password: str) -> bool:
-        pass
-
-    def logout(username: str, password: str) -> bool:
-        pass

templates/index.html

@@ -0,0 +1,75 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="utf-8">
+        <title>LittlePrynter</title>
+        <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+        <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
+        <link rel="stylesheet" href="{{ url_for('static',filename='css/style.css') }}">
+    </head>
+    <body class="container">
+        <div class="col-md-6 offset-md-3">
+            <h1 class="font-weight-bold">Little Prynter</h1>
+            <hr>
+            <br>
+            {% with messages = get_flashed_messages() %}
+              {% if messages %}
+                {% for message in messages %}
+                  <div class="alert alert-danger" role="alert">{{ message }}</div>
+                {% endfor %}
+              {% endif %}
+            {% endwith %}
+            <br>
+            <h3>Imprimer une image aléatoire</h3>
+            <a class="btn btn-primary btn-lg btn-block" href="/print/image"> Imprimer</a>
+            <hr>
+            <br>
+            <h3>Imprimer ton propre texte</h3>
+            <form class="form-group" action="/print/text" method="post">
+                <input class="form-control" type="text" name="message" placeholder="200 caractères ou moins " maxlength="200"><br>
+                <input class="btn btn-primary float-right" type="submit" value="Imprimer" name="imprimer">
+            </form>
+
+            <div id="pbar" style="display:none">
+                <img src="{{ url_for('static',filename='load.gif') }}" alt="loading wheel">
+            </div>
+            <br>
+            <br>
+            <footer><a href="/logout">Se déconnecter</a></footer>
+        </div>
+    </body>
+
+    <script>
+
+    function printImage() {
+        // Make an ajax call to the flask server on the /print/image route to trigger an image to be printer.
+        var xhttp = new XMLHttpRequest();
+         xhttp.onreadystatechange = function() {
+             var x = document.getElementById("pbar");
+                if (x.style.display === "none") {
+                    x.style.display = "inline";
+                }
+           if (this.readyState == 4 && this.status == 429) {
+               x.style.display = "none";
+               alert("Hé, attends un peu avant d'imprimer une autre image, je me repose...");
+           } else if (this.readyState == 4 && this.status == 200) {
+               x.style.display = "none";
+           }
+         };
+         xhttp.open("GET", "/print/image", true);
+         xhttp.send();
+    }
+
+    function printText(){
+        var xhttp = new XMLHttpRequest();
+         xhttp.onreadystatechange = function() {
+             if (this.readyState == 4 && this.status == 400) {
+               alert("Le text est trop long !");
+           }
+         };
+         xhttp.open("GET", "/print/text", true);
+         xhttp.send();
+    }
+
+    </script>
+</html>