import { useMemo } from 'react';
import intl from 'react-intl-universal';
import { Intent } from '@blueprintjs/core';
import { defaultTo } from 'lodash';
import { AppToaster } from 'components';
import {
  transformTableStateToQuery,
  defaultFastFieldShouldUpdate,
} from 'utils';
import { transformToForm } from 'utils';
import { useSettingsSelector } from '../../hooks/state';
import { transformItemFormData } from './ItemForm.schema';

const defaultInitialValues = {
  active: 1,
  name: '',
  type: 'service',
  code: '',
  cost_price: '',
  sell_price: '',
  cost_account_id: '',
  sell_account_id: '',
  inventory_account_id: '',
  category_id: '',
  sellable: 1,
  purchasable: true,
  sell_description: '',
  purchase_description: '',
};

/**
 * Initial values in create and edit mode.
 */
export const useItemFormInitialValues = (item) => {
  const { items: itemsSettings } = useSettingsSelector();

  return useMemo(
    () => ({
      ...defaultInitialValues,
      cost_account_id: defaultTo(itemsSettings?.preferredCostAccount, ''),
      sell_account_id: defaultTo(itemsSettings?.preferredSellAccount, ''),
      inventory_account_id: defaultTo(
        itemsSettings?.preferredInventoryAccount,
        '',
      ),
      /**
       * We only care about the fields in the form. Previously unfilled optional
       * values such as `notes` come back from the API as null, so remove those
       * as well.
       */
      ...transformToForm(
        transformItemFormData(item, defaultInitialValues),
        defaultInitialValues,
      ),
    }),
    [item, itemsSettings],
  );
};

export const transitionItemTypeKeyToLabel = (itemTypeKey) => {
  const table = {
    service: intl.get('service'),
    inventory: intl.get('inventory'),
    'non-inventory': intl.get('non_inventory'),
  };
  return typeof table[itemTypeKey] === 'string' ? table[itemTypeKey] : '';
};

// handle delete errors.
export const handleDeleteErrors = (errors) => {
  if (
    errors.find((error) => error.type === 'ITEM_HAS_ASSOCIATED_TRANSACTINS')
  ) {
    AppToaster.show({
      message: intl.get('the_item_has_associated_transactions'),
      intent: Intent.DANGER,
    });
  }

  if (
    errors.find(
      (error) => error.type === 'ITEM_HAS_ASSOCIATED_INVENTORY_ADJUSTMENT',
    )
  ) {
    AppToaster.show({
      message: intl.get(
        'you_could_not_delete_item_that_has_associated_inventory_adjustments_transacions',
      ),
      intent: Intent.DANGER,
    });
  }
  if (
    errors.find(
      (error) => error.type === 'TYPE_CANNOT_CHANGE_WITH_ITEM_HAS_TRANSACTIONS',
    )
  ) {
    AppToaster.show({
      message: intl.get(
        'cannot_change_item_type_to_inventory_with_item_has_associated_transactions',
      ),
      intent: Intent.DANGER,
    });
  }
};

/**
 * Detarmines accounts fast field should update.
 */
export const accountsFieldShouldUpdate = (newProps, oldProps) => {
  return (
    newProps.accounts !== oldProps.accounts ||
    defaultFastFieldShouldUpdate(newProps, oldProps)
  );
};

/**
 * Detarmines categories fast field should update.
 */
export const categoriesFieldShouldUpdate = (newProps, oldProps) => {
  return (
    newProps.categories !== oldProps.categories ||
    defaultFastFieldShouldUpdate(newProps, oldProps)
  );
};

/**
 * Sell price fast field should update.
 */
export const sellPriceFieldShouldUpdate = (newProps, oldProps) => {
  return (
    newProps.sellable !== oldProps.sellable ||
    defaultFastFieldShouldUpdate(newProps, oldProps)
  );
};

/**
 * Sell account fast field should update.
 */
export const sellAccountFieldShouldUpdate = (newProps, oldProps) => {
  return (
    newProps.accounts !== oldProps.accounts ||
    newProps.sellable !== oldProps.sellable ||
    defaultFastFieldShouldUpdate(newProps, oldProps)
  );
};

/**
 * Sell description fast field should update.
 */
export const sellDescriptionFieldShouldUpdate = (newProps, oldProps) => {
  return (
    newProps.sellable !== oldProps.sellable ||
    defaultFastFieldShouldUpdate(newProps, oldProps)
  );
};

export const costAccountFieldShouldUpdate = (newProps, oldProps) => {
  return (
    newProps.accounts !== oldProps.accounts ||
    newProps.purchasable !== oldProps.purchasable ||
    defaultFastFieldShouldUpdate(newProps, oldProps)
  );
};

export const costPriceFieldShouldUpdate = (newProps, oldProps) => {
  return (
    newProps.purchasable !== oldProps.purchasable ||
    defaultFastFieldShouldUpdate(newProps, oldProps)
  );
};

export const purchaseDescFieldShouldUpdate = (newProps, oldProps) => {
  return (
    newProps.purchasable !== oldProps.purchasable ||
    defaultFastFieldShouldUpdate(newProps, oldProps)
  );
};

export function transformItemsTableState(tableState) {
  return {
    ...transformTableStateToQuery(tableState),
    inactive_mode: tableState.inactiveMode,
  };
}