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Enhance UI and Add Authentication #6

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66950e0
Enhance authentication by adding password hashing
Gyani25k Aug 2, 2025
e29f751
Create HTML templates with Bootstrap for enhanced UI
Gyani25k Aug 2, 2025
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14 changes: 8 additions & 6 deletions app.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
from flask import Flask, request, jsonify, render_template, redirect, url_for, flash
from flask_sqlalchemy import SQLAlchemy
from flask_login import LoginManager, UserMixin, login_user, login_required, logout_user, current_user
from werkzeug.security import generate_password_hash, check_password_hash
import pdfplumber
import pandas as pd
import re
Expand All @@ -16,9 +17,9 @@


class User(UserMixin, db.Model):
id = db.Column(db.Integer, primary_key=true)
username = db.Column(db.String(150), unique=true, nullable=false)
password = db.Column(db.String(150), nullable=false)
id = db.Column(db.Integer, primary_key=True)
username = db.Column(db.String(150), unique=True, nullable=False)
password = db.Column(db.String(150), nullable=False)


@login_manager.user_loader
Expand All @@ -37,7 +38,8 @@ def register():
flash('Username already exists')
return redirect(url_for('register'))

new_user = User(username=username, password=password) # Hash password before saving
hashed_password = generate_password_hash(password, method='sha256')
new_user = User(username=username, password=hashed_password)
db.session.add(new_user)
db.session.commit()
login_user(new_user)
Expand All @@ -53,7 +55,7 @@ def login():
password = request.form.get('password')

user = User.query.filter_by(username=username).first()
if not user or not user.password == password: # Hash compare instead
if not user or not check_password_hash(user.password, password):
flash('Invalid credentials')
return redirect(url_for('login'))

Expand Down Expand Up @@ -107,4 +109,4 @@ def extract_table_from_pdf(pdf_file_path):
if __name__ == '__main__':
with app.app_context():
db.create_all()
app.run(debug=true, port=8000)
app.run(debug=True, port=8000)
37 changes: 37 additions & 0 deletions templates/homepage.html
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@@ -0,0 +1,37 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Homepage</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">PDF Parser</a>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="/logout">Logout</a>
</li>
</ul>
</div>
</nav>
<div class="container mt-4">
<h1>Welcome to PDF Parser</h1>
<form action="/extract-pdf-dataV1" method="post" enctype="multipart/form-data">
<div class="form-group">
<label for="pdf_file">Upload a PDF file:</label>
<input type="file" class="form-control-file" id="pdf_file" name="file" accept="application/pdf" required>
</div>
<button type="submit" class="btn btn-primary">Extract Data</button>
</form>
</div>
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@1.16.1/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</body>
</html>
28 changes: 28 additions & 0 deletions templates/login.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Login</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container mt-5">
<h2>Login</h2>
<form method="POST">
<div class="form-group">
<label for="username">Username</label>
<input type="text" class="form-control" id="username" name="username" required>
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" class="form-control" id="password" name="password" required>
</div>
<button type="submit" class="btn btn-primary">Login</button>
</form>
</div>
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@1.16.1/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</body>
</html>
28 changes: 28 additions & 0 deletions templates/register.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Register</title>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container mt-5">
<h2>Register</h2>
<form method="POST">
<div class="form-group">
<label for="username">Username</label>
<input type="text" class="form-control" id="username" name="username" required>
</div>
<div class="form-group">
<label for="password">Password</label>
<input type="password" class="form-control" id="password" name="password" required>
</div>
<button type="submit" class="btn btn-success">Register</button>
</form>
</div>
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@1.16.1/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"></script>
</body>
</html>