import { createSortedShippingChannels } from "@saleor/channels/utils";
import ChannelsAvailabilityDialog from "@saleor/components/ChannelsAvailabilityDialog";
import { WindowTitle } from "@saleor/components/WindowTitle";
import useChannels from "@saleor/hooks/useChannels";
import useNavigator from "@saleor/hooks/useNavigator";
import { sectionNames } from "@saleor/intl";
import ShippingZonePostalCodeRangeDialog from "@saleor/shipping/components/ShippingZonePostalCodeRangeDialog";
import ShippingZoneRatesCreatePage from "@saleor/shipping/components/ShippingZoneRatesCreatePage";
import { useShippingRateCreator } from "@saleor/shipping/handlers";
import { useShippingZoneChannels } from "@saleor/shipping/queries";
import {
  shippingRateCreateUrl,
  ShippingRateCreateUrlDialog,
  ShippingRateCreateUrlQueryParams,
  shippingZoneUrl
} from "@saleor/shipping/urls";
import postalCodesReducer from "@saleor/shipping/views/reducer";
import {
  filterPostalCodes,
  getPostalCodeRuleByMinMax,
  getRuleObject
} from "@saleor/shipping/views/utils";
import { MinMax } from "@saleor/types";
import { PostalCodeRuleInclusionTypeEnum } from "@saleor/types/globalTypes";
import createDialogActionHandlers from "@saleor/utils/handlers/dialogActionHandlers";
import React from "react";
import { useIntl } from "react-intl";

const FORM_ID = Symbol();

export interface RateCreateProps {
  id: string;
  params: ShippingRateCreateUrlQueryParams;
}

export const RateCreate: React.FC<RateCreateProps> = ({ id, params }) => {
  const navigate = useNavigator();
  const intl = useIntl();

  const [openModal, closeModal] = createDialogActionHandlers<
    ShippingRateCreateUrlDialog,
    ShippingRateCreateUrlQueryParams
  >(navigate, params => shippingRateCreateUrl(id, params), params);

  const {
    data: shippingZoneData,
    loading: channelsLoading
  } = useShippingZoneChannels({
    displayLoader: true,
    variables: { id }
  });

  const allChannels = createSortedShippingChannels(
    shippingZoneData?.shippingZone?.channels
  );

  const {
    channelListElements,
    channelsToggle,
    currentChannels,
    handleChannelsConfirm,
    handleChannelsModalClose,
    handleChannelsModalOpen,
    isChannelSelected,
    isChannelsModalOpen,
    setCurrentChannels,
    toggleAllChannels
  } = useChannels(
    allChannels,
    params?.action,
    { closeModal, openModal },
    { formId: FORM_ID }
  );

  const [state, dispatch] = React.useReducer(postalCodesReducer, {
    codesToDelete: [],
    havePostalCodesChanged: false,
    inclusionType: PostalCodeRuleInclusionTypeEnum.EXCLUDE,
    originalCodes: [],
    postalCodeRules: []
  });

  const {
    channelErrors,
    createShippingRate,
    errors,
    status
  } = useShippingRateCreator(
    id,
    params.type,
    state.postalCodeRules,
    state.inclusionType
  );

  const handleBack = () => navigate(shippingZoneUrl(id));

  const onPostalCodeAssign = (rule: MinMax) => {
    if (
      state.postalCodeRules.filter(getPostalCodeRuleByMinMax(rule)).length > 0
    ) {
      closeModal();
      return;
    }

    const newCode = getRuleObject(rule, state.inclusionType);
    dispatch({
      havePostalCodesChanged: true,
      postalCodeRules: [...state.postalCodeRules, newCode]
    });
    closeModal();
  };

  const onPostalCodeInclusionChange = (
    inclusion: PostalCodeRuleInclusionTypeEnum
  ) => {
    dispatch({
      inclusionType: inclusion,
      postalCodeRules: []
    });
  };

  const onPostalCodeUnassign = code => {
    dispatch({
      havePostalCodesChanged: true,
      postalCodeRules: filterPostalCodes(state.postalCodeRules, code)
    });
  };

  return (
    <>
      <WindowTitle title={intl.formatMessage(sectionNames.shipping)} />
      {!!allChannels?.length && (
        <ChannelsAvailabilityDialog
          isSelected={isChannelSelected}
          channels={allChannels}
          onChange={channelsToggle}
          onClose={handleChannelsModalClose}
          open={isChannelsModalOpen}
          title={intl.formatMessage({
            defaultMessage: "Manage Channel Availability"
          })}
          confirmButtonState="default"
          selected={channelListElements.length}
          onConfirm={handleChannelsConfirm}
          toggleAll={toggleAllChannels}
        />
      )}

      <ShippingZoneRatesCreatePage
        formId={FORM_ID}
        allChannelsCount={allChannels?.length}
        shippingChannels={currentChannels}
        disabled={channelsLoading || status === "loading"}
        saveButtonBarState={status}
        onSubmit={createShippingRate}
        onBack={handleBack}
        errors={errors}
        channelErrors={channelErrors}
        postalCodes={state.postalCodeRules}
        openChannelsModal={handleChannelsModalOpen}
        onChannelsChange={setCurrentChannels}
        onPostalCodeAssign={() => openModal("add-range")}
        onPostalCodeUnassign={onPostalCodeUnassign}
        onPostalCodeInclusionChange={onPostalCodeInclusionChange}
        variant={params.type}
      />
      <ShippingZonePostalCodeRangeDialog
        confirmButtonState="default"
        onClose={closeModal}
        onSubmit={onPostalCodeAssign}
        open={params.action === "add-range"}
      />
    </>
  );
};

export default RateCreate;