Add System Settings. Enable/Disable User registration.

app.py

@@ -1,5 +1,5 @@
 from flask import Flask, render_template, request, redirect, url_for, jsonify, flash, session, g
-from models import db, TimeEntry, WorkConfig, User
+from models import db, TimeEntry, WorkConfig, User, SystemSettings
 import logging
 from datetime import datetime, time, timedelta
 import os
@@ -42,6 +42,23 @@ mail = Mail(app)
 # Initialize the database with the app
 db.init_app(app)
 
+# Add this function to initialize system settings
+def init_system_settings():
+    # Check if registration_enabled setting exists, if not create it
+    if not SystemSettings.query.filter_by(key='registration_enabled').first():
+        registration_setting = SystemSettings(
+            key='registration_enabled',
+            value='true',
+            description='Controls whether new user registration is allowed'
+        )
+        db.session.add(registration_setting)
+        db.session.commit()
+
+# Call this function during app initialization (add it where you initialize the app)
+@app.before_first_request
+def initialize_app():
+    init_system_settings()
+
 # Authentication decorator
 def login_required(f):
     @wraps(f)
@@ -123,6 +140,14 @@ def logout():
 
 @app.route('/register', methods=['GET', 'POST'])
 def register():
+    # Check if registration is enabled
+    reg_setting = SystemSettings.query.filter_by(key='registration_enabled').first()
+    registration_enabled = reg_setting and reg_setting.value == 'true'
+    
+    if not registration_enabled:
+        flash('Registration is currently disabled by the administrator.', 'error')
+        return redirect(url_for('login'))
+    
     if request.method == 'POST':
         username = request.form.get('username')
         email = request.form.get('email')
@@ -681,5 +706,27 @@ def toggle_user_status(user_id):
     
     return redirect(url_for('admin_users'))
 
+# Add this route to manage system settings
+@app.route('/admin/settings', methods=['GET', 'POST'])
+@admin_required
+def admin_settings():
+    if request.method == 'POST':
+        # Update registration setting
+        registration_enabled = 'registration_enabled' in request.form
+        
+        reg_setting = SystemSettings.query.filter_by(key='registration_enabled').first()
+        if reg_setting:
+            reg_setting.value = 'true' if registration_enabled else 'false'
+            db.session.commit()
+            flash('System settings updated successfully!', 'success')
+        
+    # Get current settings
+    settings = {}
+    for setting in SystemSettings.query.all():
+        if setting.key == 'registration_enabled':
+            settings['registration_enabled'] = setting.value == 'true'
+    
+    return render_template('admin_settings.html', title='System Settings', settings=settings)
+
 if __name__ == '__main__':
     app.run(debug=True)

migrate_db.py

@@ -1,7 +1,7 @@
 from app import app, db
 import sqlite3
 import os
-from models import User, TimeEntry, WorkConfig
+from models import User, TimeEntry, WorkConfig, SystemSettings
 from werkzeug.security import generate_password_hash
 from datetime import datetime
 
@@ -13,6 +13,9 @@ def migrate_database():
         print("Database doesn't exist. Creating new database.")
         with app.app_context():
             db.create_all()
+            
+            # Initialize system settings
+            init_system_settings()
         return
 
     print("Migrating existing database...")
@@ -104,6 +107,20 @@ def migrate_database():
         print("Adding is_blocked column to user table...")
         cursor.execute("ALTER TABLE user ADD COLUMN is_blocked BOOLEAN DEFAULT 0")
 
+    # Check if the system_settings table exists
+    cursor.execute("SELECT name FROM sqlite_master WHERE type='table' AND name='system_settings'")
+    if not cursor.fetchone():
+        print("Creating system_settings table...")
+        cursor.execute("""
+        CREATE TABLE system_settings (
+            id INTEGER PRIMARY KEY AUTOINCREMENT,
+            key VARCHAR(50) UNIQUE NOT NULL,
+            value VARCHAR(255) NOT NULL,
+            description VARCHAR(255),
+            updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )
+        """)
+
     # Commit changes and close connection
     conn.commit()
     conn.close()
@@ -112,6 +129,9 @@ def migrate_database():
         # Create tables if they don't exist
         db.create_all()
         
+        # Initialize system settings
+        init_system_settings()
+        
         # Check if admin user exists
         admin = User.query.filter_by(username='admin').first()
         if not admin:
@@ -154,6 +174,21 @@ def migrate_database():
         print(f"Associated {len(orphan_configs)} existing work configs with admin user")
         print(f"Marked {len(existing_users)} existing users as verified")
 
+def init_system_settings():
+    """Initialize system settings with default values if they don't exist"""
+    # Check if registration_enabled setting exists
+    reg_setting = SystemSettings.query.filter_by(key='registration_enabled').first()
+    if not reg_setting:
+        print("Adding registration_enabled system setting...")
+        reg_setting = SystemSettings(
+            key='registration_enabled',
+            value='true',  # Default to enabled
+            description='Controls whether new user registration is allowed'
+        )
+        db.session.add(reg_setting)
+        db.session.commit()
+        print("Registration setting initialized to enabled")
+
 if __name__ == "__main__":
     migrate_database()
     print("Database migration completed")

models.py

@@ -49,6 +49,16 @@ class User(db.Model):
     def __repr__(self):
         return f'<User {self.username}>'
 
+class SystemSettings(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    key = db.Column(db.String(50), unique=True, nullable=False)
+    value = db.Column(db.String(255), nullable=False)
+    description = db.Column(db.String(255))
+    updated_at = db.Column(db.DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    def __repr__(self):
+        return f'<SystemSettings {self.key}={self.value}>'
+
 class TimeEntry(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     arrival_time = db.Column(db.DateTime, nullable=False)

static/css/style.css

@@ -523,3 +523,77 @@ input[type="time"]::-webkit-datetime-edit {
     background-color: #f8d7da;
     color: #721c24;
 }
+
+.settings-card {
+    background-color: #f8f9fa;
+    border-radius: 5px;
+    padding: 20px;
+    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+    margin-bottom: 20px;
+}
+
+.setting-description {
+    color: #6c757d;
+    font-size: 0.9em;
+    margin-top: 5px;
+}
+
+.checkbox-container {
+    display: block;
+    position: relative;
+    padding-left: 35px;
+    margin-bottom: 12px;
+    cursor: pointer;
+    font-size: 16px;
+    user-select: none;
+}
+
+.checkbox-container input {
+    position: absolute;
+    opacity: 0;
+    cursor: pointer;
+    height: 0;
+    width: 0;
+}
+
+.checkmark {
+    position: absolute;
+    top: 0;
+    left: 0;
+    height: 25px;
+    width: 25px;
+    background-color: #eee;
+    border-radius: 4px;
+}
+
+.checkbox-container:hover input ~ .checkmark {
+    background-color: #ccc;
+}
+
+.checkbox-container input:checked ~ .checkmark {
+    background-color: #2196F3;
+}
+
+.checkmark:after {
+    content: "";
+    position: absolute;
+    display: none;
+}
+
+.checkbox-container input:checked ~ .checkmark:after {
+    display: block;
+}
+
+.checkbox-container .checkmark:after {
+    left: 9px;
+    top: 5px;
+    width: 5px;
+    height: 10px;
+    border: solid white;
+    border-width: 0 3px 3px 0;
+    transform: rotate(45deg);
+}
+
+.form-actions {
+    margin-top: 20px;
+}

templates/admin_dashboard.html

@@ -11,14 +11,11 @@
             <a href="{{ url_for('admin_users') }}" class="btn btn-primary">Manage Users</a>
         </div>
         
-        <!-- You can add more admin cards here in the future -->
-        <!-- For example:
         <div class="admin-card">
             <h2>System Settings</h2>
-            <p>Configure application-wide settings.</p>
-            <a href="#" class="btn btn-primary">Configure</a>
+            <p>Configure application-wide settings like registration and more.</p>
+            <a href="{{ url_for('admin_settings') }}" class="btn btn-primary">Configure</a>
         </div>
-        -->
     </div>
 </div>
 {% endblock %}

templates/admin_settings.html

@@ -0,0 +1,31 @@
+{% extends "layout.html" %}
+
+{% block content %}
+<div class="admin-container">
+    <h1>System Settings</h1>
+    
+    <form method="POST" action="{{ url_for('admin_settings') }}">
+        <div class="settings-card">
+            <h2>Registration Settings</h2>
+            
+            <div class="form-group">
+                <label class="checkbox-container">
+                    <input type="checkbox" name="registration_enabled" 
+                           {% if settings.registration_enabled %}checked{% endif %}>
+                    <span class="checkmark"></span>
+                    Enable User Registration
+                </label>
+                <p class="setting-description">
+                    When enabled, new users can register accounts. When disabled, only administrators can create new accounts.
+                </p>
+            </div>
+            
+            <!-- You can add more settings here in the future -->
+        </div>
+        
+        <div class="form-actions">
+            <button type="submit" class="btn btn-primary">Save Settings</button>
+        </div>
+    </form>
+</div>
+{% endblock %}