from flask import Blueprint, render_template, request, jsonify, flash, redirect, url_for
from flask_login import login_required, current_user
from sqlalchemy import func, case
import json
import pymysql
from app import db
from models import PaymentBatch, Payments, SinglePayments, PaymentPlans
from splynx import Splynx, SPLYNX_URL, SPLYNX_KEY, SPLYNX_SECRET
from stripe_payment_processor import StripePaymentProcessor
from config import Config
from services import log_activity

splynx = Splynx(url=SPLYNX_URL, key=SPLYNX_KEY, secret=SPLYNX_SECRET)

def processPaymentResult(pay_id, result, key):
    """Process payment result and update database record."""
    from datetime import datetime
    
    if key == "pay":
        payment = db.session.query(Payments).filter(Payments.id == pay_id).first()
    elif key == "singlepay":
        payment = db.session.query(SinglePayments).filter(SinglePayments.id == pay_id).first()
    
    try:
        if result.get('error') and not result.get('needs_fee_update'):
            payment.Error = f"Error Type: {result['error_type']}\nError: {result['error']}"
            payment.Success = result['success']
            payment.PI_JSON = json.dumps(result)
        else:
            if result.get('needs_fee_update'):
                payment.PI_FollowUp = True
            payment.Payment_Intent = result['payment_intent_id']
            payment.Success = result['success']
            if result['success'] and Config.PROCESS_LIVE and key == "singlepay":
                # Only update Splynx for successful single payments in live mode
                find_pay_splynx_invoices(payment.Splynx_ID)
                add_payment_splynx(
                    splynx_id=payment.Splynx_ID,
                    pi_id=result['payment_intent_id'],
                    pay_id=payment.id,
                    amount=payment.Payment_Amount
                )
            if result.get('payment_method_type') == "card":
                payment.Payment_Method = result['estimated_fee_details']['card_display_brand']
            elif result.get('payment_method_type') == "au_becs_debit":
                payment.Payment_Method = result['payment_method_type']
            if payment.PI_JSON:
                combined = {**json.loads(payment.PI_JSON), **result}
                payment.PI_JSON = json.dumps(combined)
            else:
                payment.PI_JSON = json.dumps(result)
            if result.get('fee_details'):
                payment.Fee_Total = result['fee_details']['total_fee']
                for fee_type in result['fee_details']['fee_breakdown']:
                    if fee_type['type'] == "tax":
                        payment.Fee_Tax = fee_type['amount']
                    elif fee_type['type'] == "stripe_fee":
                        payment.Fee_Stripe = fee_type['amount']
    except Exception as e:
        print(f"processPaymentResult error: {e}\n{json.dumps(result)}")
        payment.PI_FollowUp = True

def find_pay_splynx_invoices(splynx_id):
    """Mark Splynx invoices as paid for the given customer ID."""
    result = splynx.get(url=f"/api/2.0/admin/finance/invoices?main_attributes[customer_id]={splynx_id}&main_attributes[status]=not_paid")

    invoice_pay = {
        "status": "paid"
    }

    for pay in result:
        res = splynx.put(url=f"/api/2.0/admin/finance/invoices/{pay['id']}", params=invoice_pay)
        return res

def add_payment_splynx(splynx_id, pi_id, pay_id, amount):
    """Add a payment record to Splynx."""
    from datetime import datetime
    
    stripe_pay = {
        "customer_id": splynx_id,
        "amount": amount,
        "date": str(datetime.now().strftime('%Y-%m-%d')),
        "field_1": pi_id,
        "field_2": f"Single Payment_ID: {pay_id}"
    }
    
    res = splynx.post(url="/api/2.0/admin/finance/payments", params=stripe_pay)
    if res:
        return res['id']
    else:
        return False

def get_stripe_customer_id(splynx_id):
    """Get Stripe customer ID from MySQL for a given Splynx customer ID."""
    connection = None
    try:
        # Connect to MySQL database
        connection = pymysql.connect(
            host=Config.MYSQL_CONFIG['host'],
            database=Config.MYSQL_CONFIG['database'],
            user=Config.MYSQL_CONFIG['user'],
            password=Config.MYSQL_CONFIG['password'],
            port=Config.MYSQL_CONFIG['port'],
            autocommit=False,
            cursorclass=pymysql.cursors.DictCursor
        )
        
        query = """
        SELECT 
            cb.customer_id,
            cb.deposit,
            cb.payment_method,
            pad.field_1 AS stripe_customer_id
        FROM customer_billing cb
        LEFT OUTER JOIN payment_account_data pad ON cb.customer_id = pad.customer_id
        WHERE cb.customer_id = %s
        ORDER BY cb.payment_method ASC
        LIMIT 1
        """
        
        with connection.cursor() as cursor:
            cursor.execute(query, (splynx_id,))
            result = cursor.fetchone()
            
            if result and result['stripe_customer_id']:
                return result['stripe_customer_id']
            else:
                return None
        
    except pymysql.Error as e:
        print(f"MySQL Error in get_stripe_customer_id: {e}")
        return None
    except Exception as e:
        print(f"Unexpected Error in get_stripe_customer_id: {e}")
        return None
    finally:
        if connection:
            connection.close()

def get_stripe_payment_methods(stripe_customer_id):
    """Get payment methods for a Stripe customer."""
    try:
        # Initialize Stripe processor
        if Config.PROCESS_LIVE:
            api_key = "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"
        else:
            api_key = "sk_test_51Rsi9gPfYyg6zE1S4ZpaPI1ehpbsHRLsGhysYXKwAWCZ7w6KYgVXy4pV095Nd8tyjUw9AkBhqfxqsIiiWJg5fexI00Dw36vnvx"
        
        processor = StripePaymentProcessor(api_key=api_key, enable_logging=False)
        
        # Get payment methods from Stripe
        stripe_customer_id = "cus_SoMyDihTxRsa7U"
        payment_methods = processor.get_payment_methods(stripe_customer_id)
        return payment_methods
        
    except Exception as e:
        print(f"Error fetching payment methods: {e}")
        return []

main_bp = Blueprint('main', __name__)

@main_bp.app_template_filter('format_json')
def format_json_filter(json_string):
    """Format JSON string with proper indentation."""
    if not json_string:
        return ''
    try:
        # Parse the JSON string and format it with indentation
        parsed = json.loads(json_string)
        return json.dumps(parsed, indent=2, ensure_ascii=False)
    except (json.JSONDecodeError, TypeError):
        # If it's not valid JSON, return as-is
        return json_string

@main_bp.app_template_filter('currency')
def currency_filter(value):
    """Format number as currency with digit grouping."""
    if value is None:
        return '$0.00'
    try:
        # Convert to float if it's not already
        num_value = float(value)
        # Format with comma separators and 2 decimal places
        return f"${num_value:,.2f}"
    except (ValueError, TypeError):
        return '$0.00'

@main_bp.route('/')
@login_required
def index():
    return render_template('main/index.html')

@main_bp.route('/batches')
@login_required
def batch_list():
    """Display list of all payment batches with summary information."""
    # Query all batches with summary statistics
    batches = db.session.query(
        PaymentBatch.id,
        PaymentBatch.Created,
        func.count(Payments.id).label('payment_count'),
        func.sum(Payments.Payment_Amount).label('total_amount'),
        func.sum(Payments.Fee_Stripe).label('total_fees'),
        func.sum(case((Payments.Success == True, 1), else_=0)).label('successful_count'),
        func.sum(case((Payments.Success == False, 1), else_=0)).label('failed_count'),
        func.sum(case((Payments.Error.isnot(None), 1), else_=0)).label('error_count')
    ).outerjoin(Payments, PaymentBatch.id == Payments.PaymentBatch_ID)\
     .group_by(PaymentBatch.id, PaymentBatch.Created)\
     .order_by(PaymentBatch.Created.desc()).all()
    
    return render_template('main/batch_list.html', batches=batches)

@main_bp.route('/batch/<int:batch_id>')
@login_required 
def batch_detail(batch_id):
    """Display detailed view of a specific payment batch."""
    # Get batch information
    batch = PaymentBatch.query.get_or_404(batch_id)
    
    # Get summary statistics for this batch
    summary = db.session.query(
        func.count(Payments.id).label('payment_count'),
        func.sum(Payments.Payment_Amount).label('total_amount'),
        func.sum(Payments.Fee_Stripe).label('total_fees'),
        func.sum(case((Payments.Success == True, 1), else_=0)).label('successful_count'),
        func.sum(case((Payments.Success == False, 1), else_=0)).label('failed_count'),
        func.sum(case((Payments.Error.isnot(None), 1), else_=0)).label('error_count')
    ).filter(Payments.PaymentBatch_ID == batch_id).first()
    
    # Get all payments for this batch ordered by Splynx_ID
    payments = Payments.query.filter_by(PaymentBatch_ID=batch_id)\
                           .order_by(Payments.Splynx_ID.asc()).all()
    
    return render_template('main/batch_detail.html', 
                         batch=batch, 
                         summary=summary, 
                         payments=payments)


@main_bp.route('/single-payment')
@login_required
def single_payment():
    """Display single payment form page."""
    return render_template('main/single_payment.html')

@main_bp.route('/single-payments')
@login_required
def single_payments_list():
    """Display list of all single payments with summary information."""
    # Query all single payments with user information
    from models import Users
    
    payments = db.session.query(
        SinglePayments.id,
        SinglePayments.Splynx_ID,
        SinglePayments.Stripe_Customer_ID,
        SinglePayments.Payment_Intent,
        SinglePayments.Payment_Method,
        SinglePayments.Payment_Amount,
        SinglePayments.Fee_Stripe,
        SinglePayments.Fee_Total,
        SinglePayments.Success,
        SinglePayments.Error,
        SinglePayments.PI_JSON,
        SinglePayments.Created,
        Users.FullName.label('processed_by')
    ).outerjoin(Users, SinglePayments.Who == Users.id)\
     .order_by(SinglePayments.Created.desc()).all()
    
    # Calculate summary statistics
    total_payments = len(payments)
    successful_payments = sum(1 for p in payments if p.Success == True)
    failed_payments = sum(1 for p in payments if p.Success == False)
    pending_payments = sum(1 for p in payments if p.Success == None)
    
    total_amount = sum(p.Payment_Amount or 0 for p in payments if p.Success == True)
    total_fees = sum(p.Fee_Stripe or 0 for p in payments if p.Success == True)
    
    summary = {
        'total_payments': total_payments,
        'successful_payments': successful_payments,
        'failed_payments': failed_payments,
        'pending_payments': pending_payments,
        'total_amount': total_amount,
        'total_fees': total_fees,
        'success_rate': (successful_payments / total_payments * 100) if total_payments > 0 else 0
    }
    
    return render_template('main/single_payments_list.html', payments=payments, summary=summary)

@main_bp.route('/single-payment/detail/<int:payment_id>')
@login_required
def single_payment_detail(payment_id):
    """Display detailed view of a specific single payment."""
    # Get payment information
    from models import Users
    
    payment = db.session.query(
        SinglePayments.id,
        SinglePayments.Splynx_ID,
        SinglePayments.Stripe_Customer_ID,
        SinglePayments.Payment_Intent,
        SinglePayments.PI_FollowUp,
        SinglePayments.PI_Last_Check,
        SinglePayments.Payment_Method,
        SinglePayments.Fee_Tax,
        SinglePayments.Fee_Stripe,
        SinglePayments.Fee_Total,
        SinglePayments.Payment_Amount,
        SinglePayments.PI_JSON,
        SinglePayments.PI_FollowUp_JSON,
        SinglePayments.Error,
        SinglePayments.Success,
        SinglePayments.Created,
        Users.FullName.label('processed_by')
    ).outerjoin(Users, SinglePayments.Who == Users.id)\
     .filter(SinglePayments.id == payment_id).first()
    
    if not payment:
        flash('Payment not found.', 'error')
        return redirect(url_for('main.single_payments_list'))
    
    return render_template('main/single_payment_detail.html', payment=payment)

@main_bp.route('/payment/detail/<int:payment_id>')
@login_required
def payment_detail(payment_id):
    """Display detailed view of a specific single payment."""
    # Get payment information
    
    payment = db.session.query(
        Payments.id,
        Payments.Splynx_ID,
        Payments.Stripe_Customer_ID,
        Payments.Payment_Intent,
        Payments.PI_FollowUp,
        Payments.PI_Last_Check,
        Payments.Payment_Method,
        Payments.Fee_Tax,
        Payments.Fee_Stripe,
        Payments.Fee_Total,
        Payments.Payment_Amount,
        Payments.PI_JSON,
        Payments.PI_FollowUp_JSON,
        Payments.Error,
        Payments.Success,
        Payments.Created)\
     .filter(Payments.id == payment_id).first()
    
    if not payment:
        flash('Payment not found.', 'error')
        return redirect(url_for('main.single_payments_list'))
    
    return render_template('main/single_payment_detail.html', payment=payment)

@main_bp.route('/single-payment/check-intent/<int:payment_id>', methods=['POST'])
@login_required
def check_payment_intent(payment_id):
    """Check the status of a payment intent and update the record."""
    from datetime import datetime
    
    try:
        # Get the payment record
        payment = SinglePayments.query.get_or_404(payment_id)
        
        if not payment.Payment_Intent:
            return jsonify({'success': False, 'error': 'No payment intent found'}), 400
        
        # Initialize Stripe processor
        if Config.PROCESS_LIVE:
            api_key = "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"
        else:
            api_key = "sk_test_51Rsi9gPfYyg6zE1S4ZpaPI1ehpbsHRLsGhysYXKwAWCZ7w6KYgVXy4pV095Nd8tyjUw9AkBhqfxqsIiiWJg5fexI00Dw36vnvx"
        
        processor = StripePaymentProcessor(api_key=api_key, enable_logging=True)
        
        # Check payment intent status
        intent_result = processor.check_payment_intent(payment.Payment_Intent)
        
        print(json.dumps(intent_result, indent=2))
        
        if intent_result['status'] == "succeeded":
            payment.PI_FollowUp_JSON = json.dumps(intent_result)
            payment.PI_FollowUp = False
            payment.PI_Last_Check = datetime.now()
            processPaymentResult(pay_id=payment.id, result=intent_result, key="singlepay")
        else:
            payment.PI_FollowUp_JSON = json.dumps(intent_result)
            payment.PI_Last_Check = datetime.now()
        
        db.session.commit()
        
        return jsonify({
            'success': True,
            'status': intent_result['status'],
            'payment_succeeded': intent_result['status'] == "succeeded",
            'message': f'Payment intent status: {intent_result["status"]}'
        })
        
    except Exception as e:
        db.session.rollback()
        print(f"Check payment intent error: {e}")
        return jsonify({'success': False, 'error': 'Failed to check payment intent'}), 500

@main_bp.route('/single-payment/process', methods=['POST'])
@login_required
def process_single_payment():
    """Process a single payment using Stripe."""
    try:
        # Get form data
        splynx_id = request.form.get('splynx_id')
        amount = request.form.get('amount')
        
        # Validate inputs
        if not splynx_id or not amount:
            return jsonify({'success': False, 'error': 'Missing required fields'}), 400
        
        try:
            splynx_id = int(splynx_id)
            amount = float(amount)
        except (ValueError, TypeError):
            return jsonify({'success': False, 'error': 'Invalid input format'}), 400
        
        if amount <= 0:
            return jsonify({'success': False, 'error': 'Amount must be greater than 0'}), 400
        
        # Get customer details from Splynx
        customer_data = splynx.Customer(splynx_id)
        if not customer_data:
            return jsonify({'success': False, 'error': 'Customer not found in Splynx'}), 404
        
        # Get Stripe customer ID from MySQL
        stripe_customer_id = get_stripe_customer_id(splynx_id)
        if not stripe_customer_id:
            return jsonify({'success': False, 'error': 'Customer does not have a valid Stripe payment method'}), 400
        
        # Create payment record in database
        payment_record = SinglePayments(
            Splynx_ID=splynx_id,
            Stripe_Customer_ID=stripe_customer_id,
            Payment_Amount=amount,
            Who=current_user.id
        )
        db.session.add(payment_record)
        db.session.commit()  # Commit to get the payment ID
        
        # Initialize Stripe processor
        if Config.PROCESS_LIVE:
            print("LIVE Payment")
            api_key = "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"
        else:
            print("SANDBOX Payment")
            api_key = "sk_test_51Rsi9gPfYyg6zE1S4ZpaPI1ehpbsHRLsGhysYXKwAWCZ7w6KYgVXy4pV095Nd8tyjUw9AkBhqfxqsIiiWJg5fexI00Dw36vnvx"
            # Use test customer for sandbox
            import random
            test_customers = ['cus_SoNAgAbkbFo8ZY', 'cus_SoMyDihTxRsa7U', 'cus_SoQedaG3q2ecKG', 'cus_SoMVPWxdYstYbr']
            stripe_customer_id = random.choice(test_customers)
        
        processor = StripePaymentProcessor(api_key=api_key, enable_logging=True)
        print(f"stripe_customer_id: {stripe_customer_id}")
        # Process payment
        result = processor.process_payment(
            customer_id=stripe_customer_id,
            amount=amount,
            currency="aud",
            description=f"Single Payment - Splynx ID: {splynx_id} - Payment ID: {payment_record.id}"
        )
        
        # Update payment record with results
        payment_record.Success = result.get('success', False)
        payment_record.Payment_Intent = result.get('payment_intent_id')
        payment_record.PI_JSON = json.dumps(result)
        
        if result.get('error') and not result.get('needs_fee_update'):
            payment_record.Error = f"Error Type: {result.get('error_type', 'Unknown')}\nError: {result['error']}"
        
        if result.get('needs_fee_update'):
            payment_record.PI_FollowUp = True
        
        if result.get('payment_method_type') == "card":
            payment_record.Payment_Method = result.get('estimated_fee_details', {}).get('card_display_brand', 'card')
        elif result.get('payment_method_type') == "au_becs_debit":
            payment_record.Payment_Method = result['payment_method_type']
        
        if result.get('fee_details'):
            payment_record.Fee_Total = result['fee_details']['total_fee']
            for fee_type in result['fee_details']['fee_breakdown']:
                if fee_type['type'] == "tax":
                    payment_record.Fee_Tax = fee_type['amount']
                elif fee_type['type'] == "stripe_fee":
                    payment_record.Fee_Stripe = fee_type['amount']
        
        # Commit the updated payment record
        db.session.commit()
        
        # Check if payment was actually successful
        if result.get('success'):
            # Payment succeeded - update Splynx if in live mode
            if Config.PROCESS_LIVE:
                try:
                    # Mark invoices as paid in Splynx
                    find_pay_splynx_invoices(splynx_id)
                    
                    # Add payment record to Splynx
                    splynx_payment_id = add_payment_splynx(
                        splynx_id=splynx_id,
                        pi_id=result.get('payment_intent_id'),
                        pay_id=payment_record.id,
                        amount=amount
                    )
                    
                    if splynx_payment_id:
                        print(f"✅ Splynx payment record created: {splynx_payment_id}")
                    else:
                        print("⚠️ Failed to create Splynx payment record")
                        
                except Exception as splynx_error:
                    print(f"❌ Error updating Splynx: {splynx_error}")
                    # Continue processing even if Splynx update fails
            
            # Log successful payment
            log_activity(
                current_user.id, 
                "PAYMENT_SUCCESS", 
                "SinglePayment", 
                payment_record.id,
                details=f"Single payment successful: ${amount:,.2f} for customer {splynx_id} ({customer_data.get('name', 'Unknown')})"
            )
            
            # Payment succeeded
            return jsonify({
                'success': True,
                'payment_success': True,
                'payment_id': payment_record.id,
                'payment_intent': result.get('payment_intent_id'),
                'amount': amount,
                'customer_name': customer_data.get('name'),
                'message': f'Payment processed successfully for {customer_data.get("name")}'
            })
        else:
            # Payment failed - log the failure
            log_activity(
                current_user.id, 
                "PAYMENT_FAILED", 
                "SinglePayment", 
                payment_record.id,
                details=f"Single payment failed: ${amount:,.2f} for customer {splynx_id} ({customer_data.get('name', 'Unknown')}) - {result.get('error', 'Unknown error')}"
            )
            
            # Payment failed - return the specific error
            if result.get('needs_fee_update'):
                fee_update = True
            else:
                fee_update = False
            return jsonify({
                'success': False,
                'payment_success': False,
                'fee_update': fee_update,
                'payment_id': payment_record.id,
                'error': result.get('error', 'Payment failed'),
                'error_type': result.get('error_type', 'unknown_error'),
                'stripe_error': result.get('error', 'Unknown payment error'),
                'customer_name': customer_data.get('name')
            }), 422  # 422 Unprocessable Entity for business logic failures
        
    except Exception as e:
        db.session.rollback()
        print(f"Single payment processing error: {e}")
        return jsonify({'success': False, 'error': 'Payment processing failed. Please try again.'}), 500

@main_bp.route('/payment-plans')
@login_required
def payment_plans_list():
    """Display list of all payment plans with summary information."""
    from models import Users
    
    # Query all payment plans with user information
    plans = db.session.query(
        PaymentPlans.id,
        PaymentPlans.Splynx_ID,
        PaymentPlans.Amount,
        PaymentPlans.Frequency,
        PaymentPlans.Start_Date,
        PaymentPlans.Stripe_Payment_Method,
        PaymentPlans.Enabled,
        PaymentPlans.Created,
        Users.FullName.label('created_by')
    ).outerjoin(Users, PaymentPlans.Who == Users.id)\
     .order_by(PaymentPlans.Created.desc()).all()
    
    # Calculate summary statistics
    total_plans = len(plans)
    active_plans = sum(1 for p in plans if p.Enabled == True)
    inactive_plans = sum(1 for p in plans if p.Enabled == False)
    
    total_recurring_amount = sum(p.Amount or 0 for p in plans if p.Enabled == True)
    
    summary = {
        'total_plans': total_plans,
        'active_plans': active_plans,
        'inactive_plans': inactive_plans,
        'total_recurring_amount': total_recurring_amount
    }
    
    return render_template('main/payment_plans_list.html', plans=plans, summary=summary)

@main_bp.route('/payment-plans/create')
@login_required
def payment_plans_create():
    """Display payment plan creation form."""
    return render_template('main/payment_plans_form.html', edit_mode=False)

@main_bp.route('/payment-plans/create', methods=['POST'])
@login_required
def payment_plans_create_post():
    """Handle payment plan creation."""
    try:
        # Get form data
        splynx_id = request.form.get('splynx_id')
        amount = request.form.get('amount')
        frequency = request.form.get('frequency')
        start_date = request.form.get('start_date')
        stripe_payment_method = request.form.get('stripe_payment_method')
        
        # Validate inputs
        if not all([splynx_id, amount, frequency, start_date, stripe_payment_method]):
            flash('All fields are required.', 'error')
            return redirect(url_for('main.payment_plans_create'))
        
        try:
            splynx_id = int(splynx_id)
            amount = float(amount)
            from datetime import datetime
            start_date = datetime.strptime(start_date, '%Y-%m-%d')
        except (ValueError, TypeError):
            flash('Invalid input format.', 'error')
            return redirect(url_for('main.payment_plans_create'))
        
        if amount <= 0:
            flash('Amount must be greater than 0.', 'error')
            return redirect(url_for('main.payment_plans_create'))
        
        # Validate customer exists in Splynx
        customer_data = splynx.Customer(splynx_id)
        if not customer_data:
            flash('Customer not found in Splynx.', 'error')
            return redirect(url_for('main.payment_plans_create'))
        
        # Create payment plan record
        payment_plan = PaymentPlans(
            Splynx_ID=splynx_id,
            Amount=amount,
            Frequency=frequency,
            Start_Date=start_date,
            Stripe_Payment_Method=stripe_payment_method,
            Who=current_user.id
        )
        
        db.session.add(payment_plan)
        db.session.commit()
        
        # Log payment plan creation
        log_activity(
            current_user.id,
            "PAYPLAN_CREATED",
            "PaymentPlan",
            payment_plan.id,
            details=f"Payment plan created: ${amount:,.2f} {frequency} for customer {splynx_id} ({customer_data.get('name', 'Unknown')})"
        )
        
        flash(f'Payment plan created successfully for {customer_data.get("name", "customer")}.', 'success')
        return redirect(url_for('main.payment_plans_detail', plan_id=payment_plan.id))
        
    except Exception as e:
        db.session.rollback()
        print(f"Payment plan creation error: {e}")
        flash('Failed to create payment plan. Please try again.', 'error')
        return redirect(url_for('main.payment_plans_create'))

@main_bp.route('/payment-plans/edit/<int:plan_id>')
@login_required
def payment_plans_edit(plan_id):
    """Display payment plan edit form."""
    plan = PaymentPlans.query.get_or_404(plan_id)
    return render_template('main/payment_plans_form.html', plan=plan, edit_mode=True)

@main_bp.route('/payment-plans/edit/<int:plan_id>', methods=['POST'])
@login_required
def payment_plans_edit_post(plan_id):
    """Handle payment plan updates."""
    try:
        plan = PaymentPlans.query.get_or_404(plan_id)
        
        # Get form data
        amount = request.form.get('amount')
        frequency = request.form.get('frequency')
        start_date = request.form.get('start_date')
        stripe_payment_method = request.form.get('stripe_payment_method')
        
        # Validate inputs
        if not all([amount, frequency, start_date, stripe_payment_method]):
            flash('All fields are required.', 'error')
            return redirect(url_for('main.payment_plans_edit', plan_id=plan_id))
        
        try:
            amount = float(amount)
            from datetime import datetime
            start_date = datetime.strptime(start_date, '%Y-%m-%d')
        except (ValueError, TypeError):
            flash('Invalid input format.', 'error')
            return redirect(url_for('main.payment_plans_edit', plan_id=plan_id))
        
        if amount <= 0:
            flash('Amount must be greater than 0.', 'error')
            return redirect(url_for('main.payment_plans_edit', plan_id=plan_id))
        
        # Update payment plan
        plan.Amount = amount
        plan.Frequency = frequency
        plan.Start_Date = start_date
        plan.Stripe_Payment_Method = stripe_payment_method
        
        db.session.commit()
        
        # Log payment plan update
        log_activity(
            current_user.id,
            "PAYPLAN_UPDATED",
            "PaymentPlan",
            plan.id,
            details=f"Payment plan updated: ${amount:,.2f} {frequency} starting {start_date.strftime('%Y-%m-%d')}"
        )
        
        flash('Payment plan updated successfully.', 'success')
        return redirect(url_for('main.payment_plans_detail', plan_id=plan.id))
        
    except Exception as e:
        db.session.rollback()
        print(f"Payment plan update error: {e}")
        flash('Failed to update payment plan. Please try again.', 'error')
        return redirect(url_for('main.payment_plans_edit', plan_id=plan_id))

@main_bp.route('/payment-plans/delete/<int:plan_id>', methods=['POST'])
@login_required
def payment_plans_delete(plan_id):
    """Handle payment plan deletion (soft delete)."""
    try:
        plan = PaymentPlans.query.get_or_404(plan_id)
        
        # Soft delete by setting Enabled to False
        plan.Enabled = False
        db.session.commit()
        
        flash('Payment plan has been disabled.', 'success')
        return redirect(url_for('main.payment_plans_list'))
        
    except Exception as e:
        db.session.rollback()
        print(f"Payment plan deletion error: {e}")
        flash('Failed to disable payment plan. Please try again.', 'error')
        return redirect(url_for('main.payment_plans_detail', plan_id=plan_id))

@main_bp.route('/payment-plans/toggle/<int:plan_id>', methods=['POST'])
@login_required
def payment_plans_toggle(plan_id):
    """Toggle payment plan enabled status."""
    try:
        plan = PaymentPlans.query.get_or_404(plan_id)
        
        # Toggle enabled status
        plan.Enabled = not plan.Enabled
        db.session.commit()
        
        # Log payment plan toggle
        action = "PAYPLAN_ENABLED" if plan.Enabled else "PAYPLAN_DISABLED"
        log_activity(
            current_user.id,
            action,
            "PaymentPlan",
            plan.id,
            details=f"Payment plan {'enabled' if plan.Enabled else 'disabled'}: ${plan.Amount:,.2f} {plan.Frequency}"
        )
        
        status = "enabled" if plan.Enabled else "disabled"
        flash(f'Payment plan has been {status}.', 'success')
        return redirect(url_for('main.payment_plans_detail', plan_id=plan_id))
        
    except Exception as e:
        db.session.rollback()
        print(f"Payment plan toggle error: {e}")
        flash('Failed to update payment plan status. Please try again.', 'error')
        return redirect(url_for('main.payment_plans_detail', plan_id=plan_id))

@main_bp.route('/payment-plans/detail/<int:plan_id>')
@login_required
def payment_plans_detail(plan_id):
    """Display detailed view of a specific payment plan."""
    from models import Users
    
    # Get payment plan with user information
    plan = db.session.query(
        PaymentPlans.id,
        PaymentPlans.Splynx_ID,
        PaymentPlans.Amount,
        PaymentPlans.Frequency,
        PaymentPlans.Start_Date,
        PaymentPlans.Stripe_Payment_Method,
        PaymentPlans.Enabled,
        PaymentPlans.Created,
        Users.FullName.label('created_by')
    ).outerjoin(Users, PaymentPlans.Who == Users.id)\
     .filter(PaymentPlans.id == plan_id).first()
    
    if not plan:
        flash('Payment plan not found.', 'error')
        return redirect(url_for('main.payment_plans_list'))
    
    # Get associated single payments
    associated_payments = db.session.query(
        Payments.id,
        Payments.Payment_Amount,
        Payments.Success,
        Payments.Error,
        Payments.Created,
        Payments.Payment_Intent)\
     .filter(Payments.PaymentPlan_ID == plan_id)\
     .order_by(Payments.Created.desc()).all()
    
    return render_template('main/payment_plans_detail.html', 
                         plan=plan, 
                         associated_payments=associated_payments)

@main_bp.route('/api/stripe-payment-methods/<stripe_customer_id>')
@login_required
def api_stripe_payment_methods(stripe_customer_id):
    """Get Stripe payment methods for a customer."""
    try:
        payment_methods = get_stripe_payment_methods(stripe_customer_id)
        return jsonify({'success': True, 'payment_methods': payment_methods})
    except Exception as e:
        print(f"Error fetching payment methods: {e}")
        return jsonify({'success': False, 'error': 'Failed to fetch payment methods'}), 500

@main_bp.route('/api/splynx/<int:id>')
@login_required 
def api_splynx_customer(id):
    """
    Get Splynx customer information by ID
    
    Security: Restricted to operational and financial staff who need customer data access
    """
    try:
        log_activity(current_user.id, "API_ACCESS", "SplynxCustomer", id, 
                    details=f"Accessed Splynx customer API for customer {id}")
        
        print(f"Splynx Customer API: {id}")
        res = splynx.Customer(id)
        
        if res:
            log_activity(current_user.id, "API_SUCCESS", "SplynxCustomer", id, 
                        details=f"Successfully retrieved Splynx customer {id}")
            return res
        else:
            log_activity(current_user.id, "API_NOT_FOUND", "SplynxCustomer", id, 
                        details=f"Splynx customer {id} not found")
            return {"error": "Customer not found"}, 404
            
    except Exception as e:
        log_activity(current_user.id, "API_ERROR", "SplynxCustomer", id, 
                    details=f"Splynx customer API error: {str(e)}")
        return {"error": "Internal server error"}, 500