'use server';

import { z } from 'zod';
import jwt from 'jsonwebtoken';

import type { StoreCart, StoreOrder } from "@medusajs/types";

import { initiateMultiPaymentSession, placeOrder } from "@lib/data/cart";
import type { AccountBalanceSummary } from "~/lib/services/accountBalance.service";
import { handleNavigateToPayment } from "~/lib/services/medusaCart.service";
import { loadCurrentUserAccount } from "./load-user-account";
import { getOrderedAnalysisIds } from "~/lib/services/medusaOrder.service";
import { createAnalysisOrder, getAnalysisOrder } from "~/lib/services/order.service";
import { listProductTypes } from "@lib/data";
import { sendOrderToMedipost } from "~/lib/services/medipost/medipostPrivateMessage.service";
import { AccountWithParams } from "@/packages/features/accounts/src/types/accounts";
import { createI18nServerInstance } from "~/lib/i18n/i18n.server";
import { getSupabaseServerAdminClient } from "@/packages/supabase/src/clients/server-admin-client";
import { createNotificationsApi } from "@/packages/features/notifications/src/server/api";

const ANALYSIS_PACKAGES_TYPE_HANDLE = 'analysis-packages';
const ANALYSIS_TYPE_HANDLE = 'synlab-analysis';

const env = () =>
  z
    .object({
      emailSender: z
        .string({
          error: 'EMAIL_SENDER is required',
        })
        .min(1),
      siteUrl: z
        .string({
          error: 'NEXT_PUBLIC_SITE_URL is required',
        })
        .min(1),
      isEnabledDispatchOnMontonioCallback: z.boolean({
        error: 'MEDIPOST_ENABLE_DISPATCH_ON_MONTONIO_CALLBACK is required',
      }),
      medusaBackendPublicUrl: z.string({
        error: 'MEDUSA_BACKEND_PUBLIC_URL is required',
      }).min(1),
      companyBenefitsPaymentSecretKey: z.string({
        error: 'COMPANY_BENEFITS_PAYMENT_SECRET_KEY is required',
      }).min(1),
    })
    .parse({
      emailSender: process.env.EMAIL_SENDER,
      siteUrl: process.env.NEXT_PUBLIC_SITE_URL!,
      isEnabledDispatchOnMontonioCallback:
        process.env.MEDIPOST_ENABLE_DISPATCH_ON_MONTONIO_CALLBACK === 'true',
      medusaBackendPublicUrl: process.env.MEDUSA_BACKEND_PUBLIC_URL!,
      companyBenefitsPaymentSecretKey: process.env.COMPANY_BENEFITS_PAYMENT_SECRET_KEY!,
    });

export const initiatePayment = async ({
  accountId,
  balanceSummary,
  cart,
  language,
}: {
  accountId: string;
  balanceSummary: AccountBalanceSummary;
  cart: StoreCart;
  language: string;
}) => {
  try {
    const {
      montonioPaymentSessionId,
      companyBenefitsPaymentSessionId,
      totalByMontonio,
      totalByBenefits,
      isFullyPaidByBenefits,
    } = await initiateMultiPaymentSession(cart, balanceSummary.totalBalance);

    if (!isFullyPaidByBenefits) {
      if (!montonioPaymentSessionId) {
        throw new Error('Montonio payment session ID is missing');
      }
      const url = await handleNavigateToPayment({
        language,
        paymentSessionId: montonioPaymentSessionId,
        amount: totalByMontonio,
        currencyCode: cart.currency_code,
        cartId: cart.id,
      });
      return { url };
    } else {
      // place order if all paid already
      const { orderId } = await handlePlaceOrder({ cart });

      const companyBenefitsOrderToken = jwt.sign({
        accountId,
        companyBenefitsPaymentSessionId,
        orderId,
        totalByBenefits,
      }, env().companyBenefitsPaymentSecretKey, {
        algorithm: 'HS256',
      });
      const webhookResponse = await fetch(`${env().medusaBackendPublicUrl}/hooks/payment/company-benefits_company-benefits`, {
        method: 'POST',
        body: JSON.stringify({
          orderToken: companyBenefitsOrderToken,
        }),
        headers: {
          'Content-Type': 'application/json',
        },
      });
      if (!webhookResponse.ok) {
        throw new Error('Failed to send company benefits webhook');
      }
      return { isFullyPaidByBenefits, orderId };
    }
  } catch (error) {
    console.error('Error initiating payment', error);
  }

  return { url: null }
}

export async function handlePlaceOrder({
  cart,
}: {
  cart: StoreCart;
}) {
  const { account } = await loadCurrentUserAccount();
  if (!account) {
    throw new Error('Account not found in context');
  }

  try {
    const medusaOrder = await placeOrder(cart.id, {
      revalidateCacheTags: false,
    });
    const orderedAnalysisElements = await getOrderedAnalysisIds({
      medusaOrder,
    });

    try {
      const existingAnalysisOrder = await getAnalysisOrder({
        medusaOrderId: medusaOrder.id,
      });
      console.info(
        `Analysis order already exists for medusaOrderId=${medusaOrder.id}, orderId=${existingAnalysisOrder.id}`,
      );
      return { success: true, orderId: existingAnalysisOrder.id };
    } catch {
      // ignored
    }

    const orderId = await createAnalysisOrder({
      medusaOrder,
      orderedAnalysisElements,
    });
    const orderResult = await getOrderResultParameters(medusaOrder);

    const { medusaOrderId, email, analysisPackageOrder, analysisItemsOrder } =
      orderResult;

    if (email) {
      if (analysisPackageOrder) {
        await sendAnalysisPackageOrderEmail({
          account,
          email,
          analysisPackageOrder,
        });
      } else {
        console.info(`Order has no analysis package, skipping email.`);
      }

      if (analysisItemsOrder) {
        // @TODO send email for separate analyses
        console.warn(
          `Order has analysis items, but no email template exists yet`,
        );
      } else {
        console.info(`Order has no analysis items, skipping email.`);
      }
    } else {
      console.error('Missing email to send order result email', orderResult);
    }

    if (env().isEnabledDispatchOnMontonioCallback) {
      await sendOrderToMedipost({ medusaOrderId, orderedAnalysisElements });
    }

    return { success: true, orderId };
  } catch (error) {
    console.error('Failed to place order', error);
    throw new Error(`Failed to place order, message=${error}`);
  }
}

async function sendAnalysisPackageOrderEmail({
  account,
  email,
  analysisPackageOrder,
}: {
  account: AccountWithParams;
  email: string;
  analysisPackageOrder: {
    partnerLocationName: string;
    analysisPackageName: string;
  };
}) {
  const { language } = await createI18nServerInstance();
  const { analysisPackageName, partnerLocationName } = analysisPackageOrder;
  try {
    await sendEmail({
      account: { id: account.id, name: account.name },
      email,
      analysisPackageName,
      partnerLocationName,
      language,
    });
    console.info(`Successfully sent analysis package order email to ${email}`);
  } catch (error) {
    console.error(
      `Failed to send analysis package order email to ${email}`,
      error,
    );
  }
}

async function getOrderResultParameters(medusaOrder: StoreOrder) {
  const { productTypes } = await listProductTypes();
  const analysisPackagesType = productTypes.find(
    ({ metadata }) => metadata?.handle === ANALYSIS_PACKAGES_TYPE_HANDLE,
  );
  const analysisType = productTypes.find(
    ({ metadata }) => metadata?.handle === ANALYSIS_TYPE_HANDLE,
  );

  const analysisPackageOrderItem = medusaOrder.items?.find(
    ({ product_type_id }) => product_type_id === analysisPackagesType?.id,
  );
  const analysisItems = medusaOrder.items?.filter(
    ({ product_type_id }) => product_type_id === analysisType?.id,
  );

  return {
    medusaOrderId: medusaOrder.id,
    email: medusaOrder.email,
    analysisPackageOrder: analysisPackageOrderItem
      ? {
          partnerLocationName:
            (analysisPackageOrderItem?.metadata
              ?.partner_location_name as string) ?? '',
          analysisPackageName: analysisPackageOrderItem?.title ?? '',
        }
      : null,
    analysisItemsOrder:
      Array.isArray(analysisItems) && analysisItems.length > 0
        ? analysisItems.map(({ product }) => ({
            analysisName: product?.title ?? '',
            analysisId: (product?.metadata?.analysisIdOriginal as string) ?? '',
          }))
        : null,
  };
}

const sendEmail = async ({
  account,
  email,
  analysisPackageName,
  partnerLocationName,
  language,
}: {
  account: Pick<AccountWithParams, 'name' | 'id'>;
  email: string;
  analysisPackageName: string;
  partnerLocationName: string;
  language: string;
}) => {
  const client = getSupabaseServerAdminClient();
  try {
    const { renderSynlabAnalysisPackageEmail } = await import(
      '@kit/email-templates'
    );
    const { getMailer } = await import('@kit/mailers');

    const mailer = await getMailer();

    const { html, subject } = await renderSynlabAnalysisPackageEmail({
      analysisPackageName,
      personName: account.name,
      partnerLocationName,
      language,
    });

    await mailer
      .sendEmail({
        from: env().emailSender,
        to: email,
        subject,
        html,
      })
      .catch((error) => {
        throw new Error(`Failed to send email, message=${error}`);
      });
    await createNotificationsApi(client).createNotification({
      account_id: account.id,
      body: html,
    });
  } catch (error) {
    throw new Error(`Failed to send email, message=${error}`);
  }
};