287 lines
12 KiB
Python
287 lines
12 KiB
Python
"""
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Budget Alert System
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Monitors spending and sends email alerts when budget limits are exceeded
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"""
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from flask import render_template_string
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from flask_mail import Mail, Message
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from app.models.category import Category
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from app.models.user import User
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from app import db
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from datetime import datetime
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import os
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mail = None
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def init_mail(app):
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"""Initialize Flask-Mail with app configuration"""
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global mail
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# Email configuration from environment variables
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app.config['MAIL_SERVER'] = os.environ.get('MAIL_SERVER', 'smtp.gmail.com')
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app.config['MAIL_PORT'] = int(os.environ.get('MAIL_PORT', 587))
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app.config['MAIL_USE_TLS'] = os.environ.get('MAIL_USE_TLS', 'true').lower() == 'true'
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app.config['MAIL_USERNAME'] = os.environ.get('MAIL_USERNAME')
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app.config['MAIL_PASSWORD'] = os.environ.get('MAIL_PASSWORD')
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app.config['MAIL_DEFAULT_SENDER'] = os.environ.get('MAIL_DEFAULT_SENDER', 'noreply@fina.app')
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mail = Mail(app)
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return mail
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def check_budget_alerts():
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"""Check all categories for budget overruns and send alerts"""
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if not mail:
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print("[Budget Alerts] Mail not configured")
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return 0
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alerts_sent = 0
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# Get all categories with budgets that need checking
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categories = Category.query.filter(
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Category.monthly_budget.isnot(None),
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Category.monthly_budget > 0
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).all()
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for category in categories:
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if category.should_send_budget_alert():
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user = User.query.get(category.user_id)
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if user and user.budget_alerts_enabled:
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if send_budget_alert(user, category):
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category.budget_alert_sent = True
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category.last_budget_check = datetime.now()
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alerts_sent += 1
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db.session.commit()
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return alerts_sent
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def send_budget_alert(user, category):
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"""Send budget alert email to user"""
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if not mail:
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print(f"[Budget Alert] Mail not configured, skipping alert for {user.email}")
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return False
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try:
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status = category.get_budget_status()
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alert_email = user.alert_email or user.email
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# Get user's language
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lang = user.language or 'en'
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# Email templates in multiple languages
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subjects = {
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'en': f'⚠️ Budget Alert: {category.name}',
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'ro': f'⚠️ Alertă Buget: {category.name}',
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'es': f'⚠️ Alerta de Presupuesto: {category.name}'
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}
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# Email body template
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html_template = """
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<!DOCTYPE html>
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<html>
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<head>
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<style>
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body {{ font-family: Arial, sans-serif; line-height: 1.6; color: #333; }}
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.container {{ max-width: 600px; margin: 0 auto; padding: 20px; }}
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.header {{ background: linear-gradient(135deg, #4c1d95 0%, #3b0764 100%);
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color: white; padding: 30px; text-align: center; border-radius: 10px 10px 0 0; }}
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.content {{ background: #f9fafb; padding: 30px; border-radius: 0 0 10px 10px; }}
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.alert-box {{ background: #fef2f2; border-left: 4px solid #ef4444;
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padding: 20px; margin: 20px 0; border-radius: 5px; }}
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.budget-details {{ background: white; padding: 20px; border-radius: 8px; margin: 20px 0; }}
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.stat {{ display: inline-block; margin: 10px 20px 10px 0; }}
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.stat-label {{ color: #6b7280; font-size: 14px; }}
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.stat-value {{ font-size: 24px; font-weight: bold; color: #1f2937; }}
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.over-budget {{ color: #ef4444; }}
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.progress-bar {{ background: #e5e7eb; height: 30px; border-radius: 15px;
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overflow: hidden; margin: 20px 0; }}
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.progress-fill {{ background: {progress_color}; height: 100%;
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transition: width 0.3s; display: flex; align-items: center;
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justify-content: center; color: white; font-weight: bold; }}
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.button {{ display: inline-block; background: #5b5fc7; color: white;
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padding: 12px 30px; text-decoration: none; border-radius: 8px;
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margin: 20px 0; }}
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.footer {{ text-align: center; color: #6b7280; font-size: 14px; margin-top: 30px; }}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="header">
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<h1>🔔 {title}</h1>
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</div>
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<div class="content">
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<div class="alert-box">
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<h2 style="margin-top: 0;">⚠️ {alert_message}</h2>
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<p>{alert_description}</p>
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</div>
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<div class="budget-details">
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<h3>{details_title}</h3>
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<div class="stat">
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<div class="stat-label">{spent_label}</div>
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<div class="stat-value over-budget">{currency}{spent:.2f}</div>
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</div>
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<div class="stat">
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<div class="stat-label">{budget_label}</div>
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<div class="stat-value">{currency}{budget:.2f}</div>
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</div>
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<div class="stat">
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<div class="stat-label">{remaining_label}</div>
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<div class="stat-value" style="color: #ef4444;">{currency}{remaining:.2f}</div>
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</div>
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<div class="progress-bar">
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<div class="progress-fill" style="width: {percentage}%;">
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{percentage:.1f}%
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</div>
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</div>
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<p style="margin-top: 20px; color: #6b7280;">
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<strong>{category_label}:</strong> {category_name}<br>
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<strong>{threshold_label}:</strong> {threshold}%
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</p>
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</div>
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<center>
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<a href="{dashboard_url}" class="button">{button_text}</a>
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</center>
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<div class="footer">
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<p>{footer_text}</p>
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<p style="font-size: 12px;">{disable_text}</p>
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</div>
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</div>
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</div>
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</body>
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</html>
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"""
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# Translations
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translations = {
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'en': {
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'title': 'Budget Alert',
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'alert_message': 'Budget Limit Exceeded!',
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'alert_description': f'Your spending in the "{category.name}" category has exceeded {int(category.budget_alert_threshold * 100)}% of your monthly budget.',
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'details_title': 'Budget Overview',
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'spent_label': 'Spent This Month',
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'budget_label': 'Monthly Budget',
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'remaining_label': 'Over Budget',
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'category_label': 'Category',
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'threshold_label': 'Alert Threshold',
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'button_text': 'View Dashboard',
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'footer_text': 'This is an automated budget alert from FINA Finance Tracker.',
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'disable_text': 'To disable budget alerts, go to Settings > Profile.'
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},
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'ro': {
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'title': 'Alertă Buget',
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'alert_message': 'Limită buget depășită!',
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'alert_description': f'Cheltuielile în categoria "{category.name}" au depășit {int(category.budget_alert_threshold * 100)}% din bugetul lunar.',
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'details_title': 'Rezumat Buget',
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'spent_label': 'Cheltuit Luna Aceasta',
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'budget_label': 'Buget Lunar',
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'remaining_label': 'Peste Buget',
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'category_label': 'Categorie',
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'threshold_label': 'Prag Alertă',
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'button_text': 'Vezi Tabloul de Bord',
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'footer_text': 'Aceasta este o alertă automată de buget de la FINA Finance Tracker.',
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'disable_text': 'Pentru a dezactiva alertele de buget, mergi la Setări > Profil.'
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},
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'es': {
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'title': 'Alerta de Presupuesto',
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'alert_message': '¡Límite de presupuesto excedido!',
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'alert_description': f'Tus gastos en la categoría "{category.name}" han superado el {int(category.budget_alert_threshold * 100)}% de tu presupuesto mensual.',
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'details_title': 'Resumen de Presupuesto',
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'spent_label': 'Gastado Este Mes',
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'budget_label': 'Presupuesto Mensual',
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'remaining_label': 'Sobre Presupuesto',
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'category_label': 'Categoría',
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'threshold_label': 'Umbral de Alerta',
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'button_text': 'Ver Panel',
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'footer_text': 'Esta es una alerta automática de presupuesto de FINA Finance Tracker.',
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'disable_text': 'Para desactivar las alertas de presupuesto, ve a Configuración > Perfil.'
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}
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}
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t = translations.get(lang, translations['en'])
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# Determine progress bar color
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if status['percentage'] >= 100:
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progress_color = '#ef4444' # Red
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elif status['percentage'] >= 90:
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progress_color = '#f59e0b' # Orange
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else:
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progress_color = '#10b981' # Green
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# Dashboard URL (adjust based on your deployment)
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dashboard_url = os.environ.get('APP_URL', 'http://localhost:5001') + '/dashboard'
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html_body = html_template.format(
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title=t['title'],
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alert_message=t['alert_message'],
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alert_description=t['alert_description'],
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details_title=t['details_title'],
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spent_label=t['spent_label'],
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budget_label=t['budget_label'],
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remaining_label=t['remaining_label'],
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category_label=t['category_label'],
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threshold_label=t['threshold_label'],
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button_text=t['button_text'],
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footer_text=t['footer_text'],
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disable_text=t['disable_text'],
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currency=user.currency,
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spent=status['spent'],
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budget=status['budget'],
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remaining=abs(status['remaining']),
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percentage=min(status['percentage'], 100),
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progress_color=progress_color,
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category_name=category.name,
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threshold=int(category.budget_alert_threshold * 100),
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dashboard_url=dashboard_url
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)
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msg = Message(
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subject=subjects.get(lang, subjects['en']),
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recipients=[alert_email],
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html=html_body
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)
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mail.send(msg)
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print(f"[Budget Alert] Sent to {alert_email} for category {category.name}")
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return True
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except Exception as e:
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print(f"[Budget Alert] Error sending email: {e}")
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return False
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def send_test_budget_alert(user_email):
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"""Send a test budget alert email"""
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if not mail:
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return False, "Mail not configured"
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try:
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msg = Message(
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subject='Test Budget Alert - FINA',
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recipients=[user_email],
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body='This is a test email from FINA budget alert system. If you received this, email alerts are working correctly!',
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html='''
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<html>
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<body style="font-family: Arial, sans-serif;">
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<h2>✅ Test Email Successful</h2>
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<p>This is a test email from the FINA budget alert system.</p>
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<p>If you received this message, your email configuration is working correctly!</p>
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<hr>
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<p style="color: #666; font-size: 12px;">FINA Finance Tracker</p>
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</body>
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</html>
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'''
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)
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mail.send(msg)
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return True, "Test email sent successfully"
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except Exception as e:
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return False, str(e)
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