import type { BillingRefusal } from './api'
import { type BillingCopy, DEFAULT_BILLING_COPY } from './copy'

export interface BillingRefusalPresentation {
  action: { type: 'none' } | { type: 'portal'; url?: string } | { type: 'retry' } | { type: 'step_up' }
  message: string
  title: string
}

const portalAction = (url?: string): BillingRefusalPresentation['action'] => ({ type: 'portal', url })

const retryMessage = (refusal: BillingRefusal, copy: BillingCopy): string => {
  const mins = refusal.retryAfter ? copy.retryAfter(Math.max(1, Math.round(refusal.retryAfter / 60))) : ''

  return copy.rateLimited(mins)
}

const stripeRetryMessage = (refusal: BillingRefusal, copy: BillingCopy): string => {
  const mins = refusal.retryAfter ? copy.retryAfter(Math.max(1, Math.round(refusal.retryAfter / 60))) : ''

  return copy.stripeRetry(mins)
}

export const resolveRefusal = (
  refusal: BillingRefusal,
  copy: BillingCopy = DEFAULT_BILLING_COPY
): BillingRefusalPresentation => {
  switch (refusal.kind) {
    case 'consent_required':
      return {
        action: portalAction(refusal.portalUrl),
        message: copy.confirmCardMessage,
        title: copy.confirmCardTitle
      }

    case 'insufficient_scope':
      return {
        action: { type: 'step_up' },
        message: copy.spendingApprovalMessage,
        title: copy.spendingApprovalTitle
      }
    case 'remote_spending_revoked': {
      const who = refusal.actor === 'admin' ? copy.adminRevoked : copy.userRevoked

      return {
        action: portalAction(refusal.portalUrl),
        message: copy.reauthorize(who),
        title: copy.spendingRevoked
      }
    }

    case 'session_revoked':
      return {
        action: portalAction(refusal.portalUrl),
        message: copy.sessionRevokedMessage,
        title: copy.sessionRevokedTitle
      }

    case 'cli_billing_disabled':

    case 'remote_spending_disabled':
      return {
        action: portalAction(refusal.portalUrl),
        message: copy.spendingDisabledMessage,
        title: copy.spendingDisabledTitle
      }

    case 'role_required':
      return {
        action: portalAction(refusal.portalUrl),
        message: copy.adminRequiredMessage,
        title: copy.adminRequiredTitle
      }

    case 'idempotency_conflict':
      return {
        action: { type: 'none' },
        message: copy.conflictingChargeMessage,
        title: copy.conflictingChargeTitle
      }

    case 'no_payment_method':
      return {
        action: portalAction(refusal.portalUrl),
        message: copy.noSavedCardMessage,
        title: copy.noSavedCard
      }

    case 'org_access_denied':
      return {
        action: { type: 'none' },
        message: copy.orgDeniedMessage,
        title: copy.orgDeniedTitle
      }
    case 'monthly_cap_exceeded': {
      const remaining = refusal.payload?.remainingUsd

      return {
        action: portalAction(refusal.portalUrl),
        message: remaining != null ? copy.monthlyRemaining(String(remaining)) : copy.monthlyReached,
        title: copy.monthlyReachedTitle
      }
    }

    case 'rate_limited':

    case 'temporarily_unavailable':
      return {
        action: { type: 'retry' },
        message: retryMessage(refusal, copy),
        title: copy.rateLimitedTitle
      }

    case 'stripe_unavailable':
      return {
        action: { type: 'retry' },
        message: stripeRetryMessage(refusal, copy),
        title: copy.stripeTitle
      }

    case 'upgrade_cap_exceeded':
      return {
        action: { type: 'none' },
        message: copy.dailyLimitMessage,
        title: copy.dailyLimitTitle
      }

    case 'endpoint_unavailable':
      return {
        action: { type: 'retry' },
        message: refusal.message || copy.endpointMessage,
        title: copy.endpointTitle
      }

    case 'timeout':
      return {
        action: { type: 'retry' },
        message: refusal.message || copy.requestTimeoutMessage,
        title: copy.requestTimeoutTitle
      }

    case 'transport':
      return {
        action: { type: 'retry' },
        message: refusal.message || copy.connectionFailedMessage,
        title: copy.connectionFailedTitle
      }

    default:
      return {
        action: { type: 'none' },
        message: refusal.message || copy.requestFailedMessage,
        title: copy.requestFailedTitle
      }
  }
}