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import { Amounts } from "@gnu-taler/taler-util";
import { ProviderInfo, ProviderPaymentPaid, ProviderPaymentStatus, ProviderPaymentType } from "@gnu-taler/taler-wallet-core";
import { useEffect, useState } from "preact/hooks";

import * as wxApi from "../wxApi";

export interface BackupStatus {
  deviceName: string;
  providers: ProviderInfo[]
}

function getStatusTypeOrder(t: ProviderPaymentStatus) {
  return [
    ProviderPaymentType.InsufficientBalance,
    ProviderPaymentType.TermsChanged,
    ProviderPaymentType.Unpaid,
    ProviderPaymentType.Paid,
    ProviderPaymentType.Pending,
  ].indexOf(t.type)
}

function getStatusPaidOrder(a: ProviderPaymentPaid, b: ProviderPaymentPaid) {
  return a.paidUntil.t_ms === 'never' ? -1 :
    b.paidUntil.t_ms === 'never' ? 1 :
      a.paidUntil.t_ms - b.paidUntil.t_ms
}

export function useBackupStatus(): BackupStatus | undefined {
  const [status, setStatus] = useState<BackupStatus | undefined>(undefined)

  useEffect(() => {
    async function run() {
      //create a first list of backup info by currency
      const status = await wxApi.getBackupInfo()

      const providers = status.providers.sort((a, b) => {
        if (a.paymentStatus.type === ProviderPaymentType.Paid && b.paymentStatus.type === ProviderPaymentType.Paid) {
          return getStatusPaidOrder(a.paymentStatus, b.paymentStatus)
        }
        return getStatusTypeOrder(a.paymentStatus) - getStatusTypeOrder(b.paymentStatus)
      })

      setStatus({ deviceName: status.deviceId, providers })
    }
    run()
  }, [])

  return status
}