/**
 * PAYG (Pay-As-You-Go) Stripe metered billing configuration.
 * 
 * Each billable feature is a Stripe Meter + Metered Price.
 * Users subscribe via Stripe Checkout (no upfront charge).
 * Usage is reported per action. Stripe invoices monthly.
 * 
 * After creating meters and prices in Stripe Dashboard,
 * replace the placeholder IDs below with actual Stripe price IDs.
 * 
 * Dashboard: https://dashboard.stripe.com/billing/meters
 */

export type MeterId = 'invoices' | 'employees' | 'payroll-runs' | 'expenses' | 'leave-requests';

export interface MeterConfig {
  id: MeterId;
  name: string;
  description: string;
  pricePerUnit: number;      // In cents (e.g. 50 = $0.50)
  stripePriceId: string;     // Stripe metered price ID
  stripeMeterName: string;   // Stripe meter event name (matches meter in Dashboard)
  icon: string;
}

export const METERS: Record<MeterId, MeterConfig> = {
  invoices: {
    id: 'invoices',
    name: 'Invoices',
    description: '$0.50 per invoice created. Includes line items and status tracking.',
    pricePerUnit: 50,
    stripePriceId: process.env.STRIPE_INVOICES_PRICE_ID || '',
    stripeMeterName: 'vela_invoices',
    icon: '📄',
  },
  employees: {
    id: 'employees',
    name: 'Employees',
    description: '$1.00 per employee per month. Unlimited profiles and details.',
    pricePerUnit: 100,
    stripePriceId: process.env.STRIPE_EMPLOYEES_PRICE_ID || '',
    stripeMeterName: 'vela_employees',
    icon: '👤',
  },
  'payroll-runs': {
    id: 'payroll-runs',
    name: 'Payroll Runs',
    description: '$3.00 per payroll execution. Multi-jurisdiction tax calculation included.',
    pricePerUnit: 300,
    stripePriceId: process.env.STRIPE_PAYROLL_RUNS_PRICE_ID || '',
    stripeMeterName: 'vela_payroll_runs',
    icon: '💰',
  },
  expenses: {
    id: 'expenses',
    name: 'Expenses',
    description: '$0.25 per expense recorded. Categories, approvals, and reporting included.',
    pricePerUnit: 25,
    stripePriceId: process.env.STRIPE_EXPENSES_PRICE_ID || '',
    stripeMeterName: 'vela_expenses',
    icon: '🧾',
  },
  'leave-requests': {
    id: 'leave-requests',
    name: 'Leave Requests',
    description: '$0.50 per leave request. Balance tracking and approval workflow included.',
    pricePerUnit: 50,
    stripePriceId: process.env.STRIPE_LEAVE_REQUESTS_PRICE_ID || '',
    stripeMeterName: 'vela_leave_requests',
    icon: '🏖️',
  },
};

// Always-free features (never metered)
export const FREE_FEATURES = [
  'Dashboard',
  'Organisation management',
  'Member invitations',
  'Payroll jurisdiction setup',
  'Reports (basic P&L)',
  'Balance Sheet',
];

// Estimated monthly cost based on typical usage
export const ESTIMATED_COSTS = [
  { label: 'Starter (5 employees, 10 invoices)', cost: 1500 },   // $15
  { label: 'Growing (15 employees, 30 invoices, 2 payrolls)',    cost: 3625 },   // $36.25
  { label: 'Established (30 employees, 60 invoices, 4 payrolls)', cost: 7150 },   // $71.50
];