import {
  BackHistoryButton,
  CancelButton,
  ErrorOverlay,
  LoadingOverlay,
  SubmitButton,
} from "@/components";
import { calculateItemTotals } from "@/lib/calc";
import { useUrlId } from "@/lib/hooks/useUrlId";
import { Badge, Button, Form, Tabs, TabsContent, TabsList, TabsTrigger } from "@/ui";
import { CurrencyData, IGetQuote_Response_DTO, Language, MoneyValue } from "@shared/contexts";
import { t } from "i18next";
import { useEffect, useMemo, useState } from "react";
import { SubmitHandler, useForm } from "react-hook-form";
import { useNavigate } from "react-router-dom";
import { toast } from "react-toastify";
import { QuotePricesResume } from "./components";
import { QuoteDetailsCardEditor, QuoteGeneralCardEditor } from "./components/editors";
import { useQuotes } from "./hooks";

/*type QuoteDataForm = Omit<IGetQuote_Response_DTO, "items"> & {
  items: IGetQuote_QuoteItem_Response_DTO;
};*/

type QuoteDataForm = IGetQuote_Response_DTO;

const recalculateItemTotals = (items, setValue) => {
  let quoteSubtotal = MoneyValue.create({
    amount: 0,
    scale: 4,
  }).object;

  items.forEach((item, index) => {
    const itemTotals = calculateItemTotals(item);
    quoteSubtotal = quoteSubtotal.add(itemTotals.totalPrice);
    setValue(`items.${index}.subtotal_price`, itemTotals.subtotalPrice.toObject());
    setValue(`items.${index}.total_price`, itemTotals.totalPrice.toObject());
  });

  setValue("subtotal_price", quoteSubtotal.convertScale(2).toObject());
};

const updateCurrency = (value, setQuoteCurrency) => {
  setQuoteCurrency(
    CurrencyData.createFromCode(value.currency_code ?? CurrencyData.DEFAULT_CURRENCY_CODE).object
  );
};

const updateLanguage = (value, setQuoteLanguage) => {
  setQuoteLanguage(
    Language.createFromCode(value.lang_code ?? Language.DEFAULT_LANGUAGE_CODE).object
  );
};

// eslint-disable-next-line @typescript-eslint/no-unused-vars
export const QuoteEdit = () => {
  const navigate = useNavigate();
  const quoteId = useUrlId();

  const [activeTab, setActiveTab] = useState("general");

  const [quoteCurrency, setQuoteCurrency] = useState<CurrencyData>(
    CurrencyData.createDefaultCode().object
  );
  const [quoteLanguage, setQuoteLanguage] = useState<Language>(Language.createDefaultCode().object);

  /*const { data: userIdentity } = useGetIdentity();
  console.log(userIdentity);

  const { flag } = useLocalization({
    locale: userIdentity?.language ?? "es-es",
  });

  console.log(flag);*/

  const { useOne, useUpdate } = useQuotes();

  const { data, status, error: queryError } = useOne(quoteId);

  const defaultValues = useMemo(
    () => ({
      date: "",
      reference: "",
      customer_information: "",
      lang_code: "",
      currency_code: "",
      payment_method: "",
      notes: "",
      validity: "",
      subtotal_price: {
        amount: undefined,
        scale: 2,
        currency_code: data?.currency_code ?? quoteCurrency.code,
      },
      discount: {
        amount: undefined,
        scale: 0,
      },
      total_price: {
        amount: undefined,
        scale: 2,
        currency_code: data?.currency_code ?? quoteCurrency.code,
      },
      items: [
        {
          description: "",
          quantity: {
            amount: 1,
            scale: 0,
          },
          unit_price: {
            amount: null,
            scale: 4,
            currency_code: data?.currency_code ?? quoteCurrency.code,
          },
          subtotal_price: {
            amount: null,
            scale: 4,
            currency_code: data?.currency_code ?? quoteCurrency.code,
          },
          discount: {
            amount: null,
            scale: 2,
          },
          total_price: {
            amount: null,
            scale: 4,
            currency_code: data?.currency_code ?? quoteCurrency.code,
          },
        },
      ],
    }),
    [data, quoteCurrency]
  );

  const { mutate } = useUpdate(String(quoteId));

  const form = useForm<QuoteDataForm>({
    mode: "onBlur",
    values: data,
    defaultValues,
    //shouldUnregister: true,
  });

  const { watch, getValues, setValue, formState } = form;

  /*const { clear } = useFormPersist(
    "quote-edit",
    {
      watch,
      setValue,
    },
    {
      storage: window.localStorage, // default window.sessionStorage
      //exclude: ['foo']
    }
  );*/

  const { isSubmitting } = formState;

  const onSubmit: SubmitHandler<QuoteDataForm> = async (data) => {
    // Transformación del form -> typo de request
    console.log(data);
    mutate(data, {
      onError: (error) => {
        console.debug(error);
        toast.error(error.message);
        //alert(error.message);
      },
      //onSettled: () => {},
      onSuccess: () => {
        toast("Guardado!");
        //clear();
      },
    });
  };

  /*useEffect(() => {
    // eslint-disable-next-line @typescript-eslint/no-unused-vars
    const { unsubscribe } = watch((_, { name, type }) => {
      const value = getValues();

      if (name) {
        if (name === "currency_code") {
          setQuoteCurrency(
            CurrencyData.createFromCode(value.currency_code ?? CurrencyData.DEFAULT_CURRENCY_CODE)
              .object
          );
        }

        if (name === "lang_code") {
          setQuoteLanguage(
            Language.createFromCode(value.lang_code ?? Language.DEFAULT_LANGUAGE_CODE).object
          );
        }

        if (name === "items") {
          const { items } = value;

          let quoteSubtotal = MoneyValue.create({
            amount: 0,
            scale: 4,
          }).object;

          // Recálculo líneas
          items &&
            items.map((item, index) => {
              const itemTotals = calculateItemTotals(item);
              quoteSubtotal = quoteSubtotal.add(itemTotals.totalPrice);
              setValue(`items.${index}.subtotal_price`, itemTotals.subtotalPrice.toObject());
              setValue(`items.${index}.total_price`, itemTotals.totalPrice.toObject());
            });

          // Recálculo completo
          setValue("subtotal_price", quoteSubtotal.convertScale(2).toObject());
        }

        if (name.endsWith("quantity") || name.endsWith("unit_price") || name.endsWith("discount")) {
          const { items } = value;

          const [, indexString, fieldName] = String(name).split(".");
          const index = parseInt(indexString);

          const itemTotals = calculateItemTotals(items[index]);
          setValue(`items.${index}.subtotal_price`, itemTotals.subtotalPrice.toObject());
          setValue(`items.${index}.total_price`, itemTotals.totalPrice.toObject());

          // Recálculo completo
          let quoteSubtotal = MoneyValue.create({
            amount: 0,
            scale: 4,
          }).object;

          items &&
            items.map((item) => {
              const itemTotals = calculateItemTotals(item);
              quoteSubtotal = quoteSubtotal.add(itemTotals.totalPrice);
              setValue(`items.${index}.subtotal_price`, itemTotals.subtotalPrice.toObject());
              setValue(`items.${index}.total_price`, itemTotals.totalPrice.toObject());
            });

          // Recálculo completo
          setValue("subtotal_price", quoteSubtotal.convertScale(2).toObject());
        }
      }
    });
    return () => unsubscribe();
  }, [watch, getValues, setValue]);*/

  useEffect(() => {
    const { unsubscribe } = watch((_, { name }) => {
      const value = getValues();

      if (name) {
        switch (true) {
          case name === "currency_code":
            updateCurrency(value, setQuoteCurrency);
            break;

          case name === "lang_code":
            updateLanguage(value, setQuoteLanguage);
            break;

          case name === "items":
            recalculateItemTotals(value.items, setValue);
            break;

          case name.endsWith("quantity") ||
            name.endsWith("unit_price") ||
            name.endsWith("discount"): {
            const [, indexString] = String(name).split(".");
            const index = parseInt(indexString);

            const itemTotals = calculateItemTotals(value.items[index]);
            setValue(`items.${index}.subtotal_price`, itemTotals.subtotalPrice.toObject());
            setValue(`items.${index}.total_price`, itemTotals.totalPrice.toObject());

            recalculateItemTotals(value.items, setValue);
            break;
          }

          default:
            break;
        }
      }
    });
    return () => unsubscribe();
  }, [watch, getValues, setValue, setQuoteCurrency, setQuoteLanguage]);

  if (isSubmitting) {
    return <LoadingOverlay title='Guardando cotización' />;
  }

  if (status === "error") {
    return <ErrorOverlay errorMessage={queryError.message} />;
  }

  if (status !== "success") {
    return <LoadingOverlay />;
  }

  return (
    <Form {...form}>
      <form onSubmit={form.handleSubmit(onSubmit)}>
        <div className='mx-auto grid max-w-[90rem] flex-1 auto-rows-max gap-6'>
          <div className='flex items-center gap-4'>
            <BackHistoryButton />
            <h1 className='flex-1 text-xl font-semibold tracking-tight shrink-0 whitespace-nowrap sm:grow-0'>
              {t("quotes.edit.title")}
            </h1>
            <Badge variant='default' className='ml-auto sm:ml-0'>
              {data.status}
            </Badge>
            <div className='items-center hidden gap-2 md:ml-auto md:flex'>
              <CancelButton variant='outline' size='sm' onClick={() => navigate("/quotes")}>
                {t("common.cancel")}
              </CancelButton>
              <SubmitButton
                variant={form.formState.isDirty ? "default" : "outline"}
                size='sm'
                disabled={formState.isSubmitting || formState.isLoading || formState.isValidating}
              >
                {t("common.save")}
              </SubmitButton>
            </div>
          </div>

          <Tabs
            defaultValue='items'
            className='space-y-4'
            value={activeTab}
            onValueChange={setActiveTab}
          >
            <TabsList>
              <TabsTrigger value='general'>{t("quotes.create.tabs.general")}</TabsTrigger>
              <TabsTrigger value='items'>{t("quotes.create.tabs.items")}</TabsTrigger>
              {/* <TabsTrigger value='history'>{t("quotes.create.tabs.history")}</TabsTrigger>*/}
            </TabsList>
            <QuotePricesResume />
            <TabsContent value='general' forceMount hidden={"general" !== activeTab}>
              <QuoteGeneralCardEditor />
            </TabsContent>
            <TabsContent value='items' forceMount hidden={"items" !== activeTab}>
              <QuoteDetailsCardEditor
                currency={quoteCurrency}
                language={quoteLanguage}
                defaultValues={defaultValues}
              />
            </TabsContent>
          </Tabs>

          <div className='flex items-center justify-center gap-2 md:hidden'>
            <Button variant='outline' size='sm'>
              {t("quotes.create.buttons.discard")}
            </Button>
            <Button size='sm'>{t("quotes.create.buttons.save_quote")}</Button>
          </div>
        </div>
      </form>
    </Form>
  );
};