'use server';

import jwt from 'jsonwebtoken';
import { z } from "zod";
import { MontonioOrderToken } from "@/app/home/(user)/_components/cart/types";
import { loadCurrentUserAccount } from "@/app/home/(user)/_lib/server/load-user-account";
import { listProductTypes } from "@lib/data/products";
import { placeOrder, retrieveCart } from "@lib/data/cart";
import { createI18nServerInstance } from "~/lib/i18n/i18n.server";
import { createOrder } from '~/lib/services/order.service';
import { getOrderedAnalysisElementsIds, sendOrderToMedipost } from '~/lib/services/medipost.service';
import { createNotificationsApi } from '@kit/notifications/api';
import { getSupabaseServerAdminClient } from '@kit/supabase/server-admin-client';
import { AccountWithParams } from '@kit/accounts/api';

const ANALYSIS_PACKAGES_TYPE_HANDLE = 'analysis-packages';
const MONTONIO_PAID_STATUS = 'PAID';

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),
  })
  .parse({
    emailSender: process.env.EMAIL_SENDER,
    siteUrl: process.env.NEXT_PUBLIC_SITE_URL!,
  });

const sendEmail = async ({
  account,
  email,
  analysisPackageName,
  personName,
  partnerLocationName,
  language,
}: {
  account: AccountWithParams,
  email: string,
  analysisPackageName: string,
  personName: 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,
      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}`);
  }
}

export async function processMontonioCallback(orderToken: string) {
  const { language } = await createI18nServerInstance();

  const secretKey = process.env.MONTONIO_SECRET_KEY as string;

  const decoded = jwt.verify(orderToken, secretKey, {
    algorithms: ['HS256'],
  }) as MontonioOrderToken;

  if (decoded.paymentStatus !== MONTONIO_PAID_STATUS) {
    throw new Error("Payment not successful");
  }

  const account = await loadCurrentUserAccount();
  if (!account) {
    throw new Error("Account not found in context");
  }

  try {
    const [, , cartId] = decoded.merchantReferenceDisplay.split(':');
    if (!cartId) {
      throw new Error("Cart ID not found");
    }

    const cart = await retrieveCart(cartId);
    if (!cart) {
      throw new Error("Cart not found");
    }


    const medusaOrder = await placeOrder(cartId, { revalidateCacheTags: false });
    const orderedAnalysisElements = await getOrderedAnalysisElementsIds({ medusaOrder });
    const orderId = await createOrder({ medusaOrder, orderedAnalysisElements });

    const { productTypes } = await listProductTypes();
    const analysisPackagesType = productTypes.find(({ metadata }) => metadata?.handle === ANALYSIS_PACKAGES_TYPE_HANDLE);
    const analysisPackageOrderItem = medusaOrder.items?.find(({ product_type_id }) => product_type_id === analysisPackagesType?.id);

    const orderResult = {
      medusaOrderId: medusaOrder.id,
      email: medusaOrder.email,
      partnerLocationName: analysisPackageOrderItem?.metadata?.partner_location_name as string ?? '',
      analysisPackageName: analysisPackageOrderItem?.title ?? '',
      orderedAnalysisElements,
    };

    const { medusaOrderId, email, partnerLocationName, analysisPackageName } = orderResult;
    const personName = account.name;

    if (email && analysisPackageName) {
      try {
        await sendEmail({ account, email, analysisPackageName, personName, partnerLocationName, language });
      } catch (error) {
        console.error("Failed to send email", error);
      }
    } else {
      // @TODO send email for separate analyses
      console.error("Missing email or analysisPackageName", orderResult);
    }

    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}`);
  }
}