#!/usr/bin/env python3
"""
Currency Ledger Report Generator
Creates summary reports for community transparency
"""

import csv
import yaml
from datetime import datetime
import os
from collections import defaultdict

def generate_sc_summary():
    """Generate SC summary report"""
    print("📊 SMARTUP CREDITS SUMMARY REPORT")
    print("=" * 40)
    
    ledger_file = os.path.join(os.path.dirname(__file__), '..', 'ledger', 'smartup-credits', 'transactions.csv')
    
    try:
        with open(ledger_file, 'r') as f:
            reader = csv.DictReader(f)
            
            user_balances = defaultdict(int)
            total_minted = 0
            total_redeemed = 0
            transaction_count = 0
            
            for row in reader:
                if row['type'] == 'SC':
                    amount = int(row['amount'])
                    user_balances[row['to']] += amount
                    total_minted += amount
                    transaction_count += 1
                elif row['type'] == 'REDEEM':
                    amount = int(row['amount'])
                    user_balances[row['from']] -= amount
                    total_redeemed += amount
                    transaction_count += 1
            
            print(f"Total SC Minted: {total_minted}")
            print(f"Total SC Redeemed: {total_redeemed}")
            print(f"SC Outstanding: {total_minted - total_redeemed}")
            print(f"Total Transactions: {transaction_count}")
            print(f"Active Contributors: {len([u for u in user_balances if user_balances[u] > 0])}")
            
            # Top contributors
            if user_balances:
                print("\n🏆 TOP SC EARNERS:")
                sorted_users = sorted(user_balances.items(), key=lambda x: x[1], reverse=True)
                for i, (user, balance) in enumerate(sorted_users[:5]):
                    if balance > 0:
                        print(f"{i+1}. {user}: {balance} SC")
                        
    except FileNotFoundError:
        print("❌ No SC transactions found")
    except Exception as e:
        print(f"❌ Error generating SC report: {e}")

def generate_treasury_report():
    """Generate treasury health report"""
    print("\n💰 TREASURY HEALTH REPORT")
    print("=" * 30)
    
    treasury_file = os.path.join(os.path.dirname(__file__), '..', 'ledger', 'treasury', 'balance.csv')
    
    try:
        with open(treasury_file, 'r') as f:
            reader = csv.DictReader(f)
            rows = list(reader)
            
            if rows:
                latest = rows[-1]
                eur_balance = float(latest['total_eur_balance'])
                sc_outstanding = int(latest['sc_outstanding'])
                sc_liability = float(latest['sc_liability_eur'])
                
                print(f"💶 EUR Treasury: €{eur_balance:,.2f}")
                print(f"🪙 SC Outstanding: {sc_outstanding:,} SC")
                print(f"💸 SC Liability: €{sc_liability:,.2f}")
                
                if eur_balance > 0:
                    coverage_ratio = eur_balance / sc_liability if sc_liability > 0 else float('inf')
                    print(f"📊 Coverage Ratio: {coverage_ratio:.2f}x")
                    
                    if coverage_ratio >= 1.0:
                        print("✅ Full SC redemption possible")
                    else:
                        redemption_capacity = int(eur_balance)
                        print(f"⚠️  Partial redemption: €{redemption_capacity:,} available")
                        
                # 3x rule check
                max_allowed_sc = eur_balance * 3
                print(f"🛡️  3x Rule: {sc_outstanding:,} / {max_allowed_sc:,.0f} SC allowed")
                
                if sc_outstanding <= max_allowed_sc:
                    print("✅ 3x Rule: COMPLIANT")
                else:
                    print("🚨 3x Rule: VIOLATION")
                    
            else:
                print("⚠️  Treasury initialized but no balance records")
                
    except FileNotFoundError:
        print("❌ No treasury records found")
    except Exception as e:
        print(f"❌ Error generating treasury report: {e}")

def main():
    """Generate all reports"""
    print("📈 SMARTUP ZERO FINANCIAL REPORTS")
    print(f"Generated: {datetime.now().strftime('%Y-%m-%d %H:%M:%S')}")
    print("=" * 50)
    
    generate_sc_summary()
    generate_treasury_report()
    
    print("\n" + "=" * 50)
    print("💡 All ledger data is public and auditable in git history")

if __name__ == "__main__":
    main()