#!/usr/bin/env python3
"""
Personal Finance Dashboard — 0€ budget
Track income, expenses, and savings in your terminal
"""

import json
import os
from datetime import datetime
from collections import defaultdict

DATA_FILE = "finance_data.json"

def load_data():
 if os.path.exists(DATA_FILE):
 with open(DATA_FILE) as f:
 return json.load(f)
 return {"transactions": []}

def save_data(data):
 with open(DATA_FILE, "w") as f:
 json.dump(data, f, indent=2)

def add_transaction(data):
 print("\n📝 Add Transaction")
 t_type = input("Type (income/expense): ").strip().lower()
 if t_type not in ["income", "expense"]:
 print("❌ Invalid type")
 return

 amount = float(input("Amount (€): "))
 category = input("Category (e.g. Food, Rent, Salary, Freelance): ").strip()
 note = input("Note (optional): ").strip()

 data["transactions"].append({
 "date": datetime.now().strftime("%Y-%m-%d"),
 "type": t_type,
 "amount": amount,
 "category": category,
 "note": note
 })
 save_data(data)
 print("✅ Transaction saved!")

def show_dashboard(data, month=None):
 if not data["transactions"]:
 print("📭 No transactions yet. Add some first!")
 return

 if month:
 txs = [t for t in data["transactions"] if t["date"].startswith(month)]
 else:
 month = datetime.now().strftime("%Y-%m")
 txs = [t for t in data["transactions"] if t["date"].startswith(month)]

 if not txs:
 print(f"📭 No transactions for {month}")
 return

 income = sum(t["amount"] for t in txs if t["type"] == "income")
 expenses = sum(t["amount"] for t in txs if t["type"] == "expense")
 savings = income - expenses
 savings_rate = (savings / income * 100) if income > 0 else 0

 print(f"\n{'='*45}")
 print(f"💰 FINANCE DASHBOARD — {month}")
 print(f"{'='*45}")
 print(f"📈 Income: €{income:>10.2f}")
 print(f"📉 Expenses: €{expenses:>10.2f}")
 print(f"💚 Savings: €{savings:>10.2f} ({savings_rate:.1f}%)")
 print(f"{'='*45}")

 categories = defaultdict(float)
 for t in txs:
 if t["type"] == "expense":
 categories[t["category"]] += t["amount"]

 if categories:
 print("\n📊 Expenses by Category:")
 max_val = max(categories.values())
 for cat, val in sorted(categories.items(), key=lambda x: -x[1]):
 bar_len = int(val / max_val * 20)
 bar = "█" * bar_len + "░" * (20 - bar_len)
 pct = val / expenses * 100 if expenses > 0 else 0
 print(f"{cat:<15}{bar} €{val:.0f} ({pct:.0f}%)")

 if savings_rate > 0:
 annual = savings * 12
 print(f"\n🚀 At this rate: €{annual:.0f} saved/year")

 print()

def main():
 data = load_data()

 while True:
 print("\n💼 Personal Finance Dashboard")
 print("1. Add transaction")
 print("2. View dashboard (current month)")
 print("3. View all months")
 print("4. Exit")

 choice = input("\nChoice: ").strip()

 if choice == "1":
 add_transaction(data)
 elif choice == "2":
 show_dashboard(data)
 elif choice == "3":
 months = sorted(set(t["date"][:7] for t in data["transactions"]))
 for m in months:
 show_dashboard(data, m)
 elif choice == "4":
 print("👋 Goodbye!")
 break

if __name__ == "__main__":
 main()

python3 finance_dashboard.py

=============================================
💰 FINANCE DASHBOARD — 2026-03
=============================================
📈 Income: €3,200.00
📉 Expenses: €1,847.00
💚 Savings: €1,353.00 (42.3%)
=============================================

📊 Expenses by Category:
 Rent ████████████░░░░░░░░ €800 (43%)
 Food ██████░░░░░░░░░░░░░░ €350 (19%)
 Transport ████░░░░░░░░░░░░░░░░ €200 (11%)
 Freelance tools ██░░░░░░░░░░░░░░░░░░ €97 (5%)
 Other ████████░░░░░░░░░░░░ €400 (22%)

🚀 At this rate: €16,236 saved/year