import { useCallback, useEffect } from "react";
import { HasFeatureAccess } from "./../feature-wrapper/feature-wrapper.component";

/**
 * Custom hook to preserve form data for conditionally hidden fields based on feature access
 * @param {Object} form - Ant Design form instance
 * @param {Object} bodyshop - Bodyshop data for feature access checks (also contains existing database values)
 * @param {Object} featureConfig - Configuration object defining which features and their associated fields to preserve
 */
export const useFormDataPreservation = (form, bodyshop, featureConfig) => {
  const getNestedValue = (obj, path) => {
    return path.reduce((current, key) => current?.[key], obj);
  };

  const setNestedValue = (obj, path, value) => {
    const lastKey = path[path.length - 1];
    const parentPath = path.slice(0, -1);

    const parent = parentPath.reduce((current, key) => {
      if (!current[key]) current[key] = {};
      return current[key];
    }, obj);

    parent[lastKey] = value;
  };

  const preserveHiddenFormData = useCallback(() => {
    const preservationData = {};
    let hasDataToPreserve = false;

    Object.entries(featureConfig).forEach(([featureName, fieldPaths]) => {
      const hasAccess = HasFeatureAccess({ featureName, bodyshop });

      if (!hasAccess) {
        fieldPaths.forEach((fieldPath) => {
          const currentValues = form.getFieldsValue();
          let value = getNestedValue(currentValues, fieldPath);

          if (value === undefined || value === null) {
            value = getNestedValue(bodyshop, fieldPath);
          }

          if (value !== undefined && value !== null) {
            setNestedValue(preservationData, fieldPath, value);
            hasDataToPreserve = true;
          }
        });
      }
    });

    if (hasDataToPreserve) {
      form.setFieldsValue(preservationData);
    }
  }, [form, featureConfig, bodyshop]);

  const getCompleteFormValues = () => {
    const currentFormValues = form.getFieldsValue();
    const completeValues = { ...currentFormValues };

    Object.entries(featureConfig).forEach(([featureName, fieldPaths]) => {
      const hasAccess = HasFeatureAccess({ featureName, bodyshop });

      if (!hasAccess) {
        fieldPaths.forEach((fieldPath) => {
          let value = getNestedValue(currentFormValues, fieldPath);
          if (value === undefined || value === null) {
            value = getNestedValue(bodyshop, fieldPath);
          }

          if (value !== undefined && value !== null) {
            setNestedValue(completeValues, fieldPath, value);
          }
        });
      }
    });

    return completeValues;
  };

  const createSubmissionHandler = (originalHandler) => {
    return () => {
      const completeValues = getCompleteFormValues();

      // Call the original handler with complete values including hidden data
      return originalHandler(completeValues);
    };
  };

  useEffect(() => {
    preserveHiddenFormData();
  }, [bodyshop, preserveHiddenFormData]);

  return { preserveHiddenFormData, getCompleteFormValues, createSubmissionHandler };
};

/**
 * Predefined feature configurations for common shop-info components
 */
export const FEATURE_CONFIGS = {
  responsibilitycenters: {
    export: [
      ["md_responsibility_centers", "costs"],
      ["md_responsibility_centers", "profits"],
      ["md_responsibility_centers", "defaults"],
      ["md_responsibility_centers", "dms_defaults"],
      ["md_responsibility_centers", "taxes", "itemexemptcode"],
      ["md_responsibility_centers", "taxes", "invoiceexemptcode"],
      ["md_responsibility_centers", "ar"],
      ["md_responsibility_centers", "refund"],
      ["md_responsibility_centers", "sales_tax_codes"],
      ["md_responsibility_centers", "ttl_adjustment"],
      ["md_responsibility_centers", "ttl_tax_adjustment"]
    ]
  },
  general: {
    export: [
      ["accountingconfig", "qbo"],
      ["accountingconfig", "qbo_usa"],
      ["accountingconfig", "qbo_departmentid"],
      ["accountingconfig", "tiers"],
      ["accountingconfig", "twotierpref"],
      ["accountingconfig", "printlater"],
      ["accountingconfig", "emaillater"],
      ["accountingconfig", "ReceivableCustomField1"],
      ["accountingconfig", "ReceivableCustomField2"],
      ["accountingconfig", "ReceivableCustomField3"],
      ["md_classes"],
      ["enforce_class"],
      ["accountingconfig", "ClosingPeriod"],
      ["accountingconfig", "companyCode"],
      ["accountingconfig", "batchID"]
    ],
    bills: [
      ["bill_tax_rates", "federal_tax_rate"],
      ["bill_tax_rates", "state_tax_rate"],
      ["bill_tax_rates", "local_tax_rate"]
    ],
    timetickets: [["tt_allow_post_to_invoiced"], ["tt_enforce_hours_for_tech_console"], ["bill_allow_post_to_closed"]]
  }
};