/**
 * CMS Billing Plans — Stripe product configuration
 * Phase 12: Three tiers for the SaaS product
 */

export const CMS_BILLING_PLANS = {
  starter: {
    name: 'Starter',
    description: 'Für kleine Vereine und Organisationen',
    limits: {
      modules: 1,
      records: 100,
      members: 50,
      storageGb: 1,
      users: 3,
    },
    features: [
      'Module Builder (1 Modul)',
      'Mitgliederverwaltung (bis 50)',
      'Basisfunktionen',
      'Deutsche Oberfläche',
      'E-Mail-Support',
    ],
    pricing: {
      monthly: { amount: 1900, currency: 'eur' }, // 19,00 €
      yearly: { amount: 19000, currency: 'eur' },  // 190,00 € (2 Monate gratis)
    },
  },

  professional: {
    name: 'Professional',
    description: 'Für aktive Vereine und Volkshochschulen',
    limits: {
      modules: -1, // unlimited
      records: -1,
      members: -1,
      storageGb: 10,
      users: 20,
    },
    features: [
      'Unbegrenzte Module',
      'Unbegrenzte Mitglieder',
      'Kursverwaltung',
      'SEPA-Lastschriften',
      'Newsletter',
      'Dokumentengenerierung',
      'Import/Export',
      'Prioritäts-Support',
    ],
    pricing: {
      monthly: { amount: 4900, currency: 'eur' }, // 49,00 €
      yearly: { amount: 49000, currency: 'eur' },  // 490,00 €
    },
  },

  enterprise: {
    name: 'Enterprise',
    description: 'Für große Organisationen mit individuellen Anforderungen',
    limits: {
      modules: -1,
      records: -1,
      members: -1,
      storageGb: 100,
      users: -1,
    },
    features: [
      'Alles aus Professional',
      'White-Label / eigenes Branding',
      'REST-API Zugang',
      'Multi-Mandanten-Verwaltung',
      'Dedizierte Instanz (optional)',
      'Individuelle Anpassungen',
      'Persönlicher Ansprechpartner',
      'SLA-Garantie',
    ],
    pricing: {
      monthly: { amount: 14900, currency: 'eur' }, // 149,00 €
      yearly: { amount: 149000, currency: 'eur' },  // 1.490,00 €
    },
  },
} as const;

export type BillingPlanKey = keyof typeof CMS_BILLING_PLANS;

/**
 * Check if a plan allows a given feature/limit.
 */
export function checkPlanLimit(
  plan: BillingPlanKey,
  limit: keyof typeof CMS_BILLING_PLANS.starter.limits,
  currentUsage: number,
): boolean {
  const planLimits = CMS_BILLING_PLANS[plan].limits;
  const max = planLimits[limit];
  if (max === -1) return true; // unlimited
  return currentUsage < max;
}