import type { Api as GramJs } from '../../../lib/gramjs';

import type {
  ApiInvoice, ApiPaymentSavedInfo, ApiPremiumPromo, ApiPremiumSubscriptionOption,
  ApiPaymentForm, ApiReceipt, ApiLabeledPrice, ApiPaymentCredentials,
} from '../../types';

import { buildApiDocument, buildApiMessageEntity, buildApiWebDocument } from './messages';
import { omitVirtualClassFields } from './helpers';

export function buildShippingOptions(shippingOptions: GramJs.ShippingOption[] | undefined) {
  if (!shippingOptions) {
    return undefined;
  }

  return Object.values(shippingOptions).map((option) => {
    return {
      id: option.id,
      title: option.title,
      amount: option.prices.reduce((ac, cur) => ac + cur.amount.toJSNumber(), 0),
      prices: option.prices.map(({ label, amount }) => {
        return {
          label,
          amount: amount.toJSNumber(),
        };
      }),
    };
  });
}

export function buildApiReceipt(receipt: GramJs.payments.PaymentReceipt): ApiReceipt {
  const {
    invoice,
    info,
    shipping,
    currency,
    totalAmount,
    credentialsTitle,
    tipAmount,
  } = receipt;

  const { shippingAddress, phone, name } = (info || {});

  const { prices } = invoice;
  const mappedPrices: ApiLabeledPrice[] = prices.map(({ label, amount }) => ({
    label,
    amount: amount.toJSNumber(),
  }));

  let shippingPrices: ApiLabeledPrice[] | undefined;
  let shippingMethod: string | undefined;

  if (shipping) {
    shippingPrices = shipping.prices.map(({ label, amount }) => {
      return {
        label,
        amount: amount.toJSNumber(),
      };
    });
    shippingMethod = shipping.title;
  }

  return {
    currency,
    prices: mappedPrices,
    info: { shippingAddress, phone, name },
    totalAmount: totalAmount.toJSNumber(),
    credentialsTitle,
    shippingPrices,
    shippingMethod,
    tipAmount: tipAmount ? tipAmount.toJSNumber() : 0,
  };
}

export function buildApiPaymentForm(form: GramJs.payments.PaymentForm): ApiPaymentForm {
  const {
    formId,
    canSaveCredentials,
    passwordMissing: isPasswordMissing,
    providerId,
    nativeProvider,
    nativeParams,
    savedInfo,
    invoice,
    savedCredentials,
  } = form;

  const {
    test: isTest,
    nameRequested: isNameRequested,
    phoneRequested: isPhoneRequested,
    emailRequested: isEmailRequested,
    shippingAddressRequested: isShippingAddressRequested,
    flexible: isFlexible,
    phoneToProvider: shouldSendPhoneToProvider,
    emailToProvider: shouldSendEmailToProvider,
    currency,
    prices,
  } = invoice;

  const mappedPrices: ApiLabeledPrice[] = prices.map(({ label, amount }) => ({
    label,
    amount: amount.toJSNumber(),
  }));
  const { shippingAddress } = savedInfo || {};
  const cleanedInfo: ApiPaymentSavedInfo | undefined = savedInfo ? omitVirtualClassFields(savedInfo) : undefined;
  if (cleanedInfo && shippingAddress) {
    cleanedInfo.shippingAddress = omitVirtualClassFields(shippingAddress);
  }

  const nativeData = nativeParams ? JSON.parse(nativeParams.data) : {};

  return {
    canSaveCredentials,
    isPasswordMissing,
    formId: String(formId),
    providerId: String(providerId),
    nativeProvider,
    savedInfo: cleanedInfo,
    invoiceContainer: {
      isTest,
      isNameRequested,
      isPhoneRequested,
      isEmailRequested,
      isShippingAddressRequested,
      isFlexible,
      shouldSendPhoneToProvider,
      shouldSendEmailToProvider,
      currency,
      prices: mappedPrices,
    },
    nativeParams: {
      needCardholderName: Boolean(nativeData?.need_cardholder_name),
      needCountry: Boolean(nativeData?.need_country),
      needZip: Boolean(nativeData?.need_zip),
      publishableKey: nativeData?.publishable_key,
      publicToken: nativeData?.public_token,
    },
    ...(savedCredentials && { savedCredentials: buildApiPaymentCredentials(savedCredentials) }),
  };
}

export function buildApiInvoiceFromForm(form: GramJs.payments.PaymentForm): ApiInvoice {
  const {
    invoice, description: text, title, photo,
  } = form;
  const {
    test, currency, prices, recurring, recurringTermsUrl, maxTipAmount, suggestedTipAmounts,
  } = invoice;

  const totalAmount = prices.reduce((ac, cur) => ac + cur.amount.toJSNumber(), 0);

  return {
    text,
    title,
    photo: buildApiWebDocument(photo),
    amount: totalAmount,
    currency,
    isTest: test,
    isRecurring: recurring,
    recurringTermsUrl,
    maxTipAmount: maxTipAmount?.toJSNumber(),
    ...(suggestedTipAmounts && { suggestedTipAmounts: suggestedTipAmounts.map((tip) => tip.toJSNumber()) }),
  };
}

export function buildApiPremiumPromo(promo: GramJs.help.PremiumPromo): ApiPremiumPromo {
  const {
    statusText, statusEntities, videos, videoSections, periodOptions,
  } = promo;

  return {
    statusText,
    statusEntities: statusEntities.map(buildApiMessageEntity),
    videoSections,
    videos: videos.map(buildApiDocument).filter(Boolean),
    options: periodOptions.map(buildApiPremiumSubscriptionOption),
  };
}

function buildApiPremiumSubscriptionOption(option: GramJs.PremiumSubscriptionOption): ApiPremiumSubscriptionOption {
  const {
    current, canPurchaseUpgrade, currency, amount, botUrl, months,
  } = option;

  return {
    isCurrent: current,
    canPurchaseUpgrade,
    currency,
    amount: amount.toString(),
    botUrl,
    months,
  };
}

export function buildApiPaymentCredentials(credentials: GramJs.PaymentSavedCredentialsCard[]): ApiPaymentCredentials[] {
  return credentials.map(({ id, title }) => ({ id, title }));
}