/* eslint-disable no-alert, no-console */

// Mapping between display categories and their Algolia index property path
// Used for populating the Dataset Search Results facet menu dynamically
export const facetPropPathMapping = [
  {
    label: 'Data Type',
    id: 'item.types',
    facetPropPath: 'item.types.name',
    facetSubpropPath: 'item.types.subcategory.name'
  },
  {
    label: 'Anatomical Structure',
    id: 'anatomy.organ.category',
    facetPropPath: 'anatomy.organ.category.name',
    facetSubpropPath: 'anatomy.organ.subcategory.name',
    facetSubsubpropPath: 'anatomy.organ.subsubcategory.name',
    facetFilterPath: 'anatomy.organ.name'
  },
  {
    label: 'Species',
    id: 'organisms.primary.species',
    facetPropPath: 'organisms.primary.species.name',
    facetSubpropPath: 'organisms.primary.species.subcategory.name'
  },
  {
    label: 'Experimental Approach',
    id: 'item.modalities',
    facetPropPath: 'item.modalities.keyword',
    facetSubpropPath: 'item.modalities.subcategory.name'
  },
  {
    label: 'Sex',
    id: 'attributes.subject.sex',
    facetPropPath: 'attributes.subject.sex.value',
    facetSubpropPath: 'attributes.subject.sex.subcategory.name'
  },
  {
    label: 'Age Categories',
    id: 'attributes.subject.ageCategory',
    facetPropPath: 'attributes.subject.ageCategory.value',
    facetSubpropPath: 'attributes.subject.ageCategory.subcategory.name'
  },
  {
    label: 'Funding Program',
    id: 'pennsieve.organization',
    facetPropPath: 'pennsieve.organization.name',
    facetSubpropPath: 'pennsieve.organization.subcategory.name'
  },
]

// Same as above, but these show on the sidebar filters
export const shownFilters = {
  'anatomy.organ.name': 'Anatomical Structure',
  'organisms.primary.species.name': 'Species',
  'attributes.subject.sex.value': 'Sex',
  'attributes.subject.ageCategory.value': 'Age Categories',
  'pennsieve.organization.name': 'Funding Program',
  'item.types.name': 'Data type',
}

/* Returns filter for searching algolia. All facets of the same category are joined with OR,
  * and each of those results is then joined with an AND.
  * i.e. (color:blue OR color:red) AND (shape:circle OR shape:red) */
export function getFilters(selectedFacetArray = undefined) {
  // return all datasets if no filter
  if (selectedFacetArray === undefined) {
    return 'NOT item.published.status:embargo'
  }

  // Switch the 'term' attribute to 'label' if 'label' does not exist
  selectedFacetArray.forEach(f => {
    f.label = f.facet3 ? f.facet3 : f.facet2 ? f.facet2 : f.facet
  })

  let facets = removeShowAllFacets(selectedFacetArray)
  //Facet 3 Non specific is the same as facet.facet2 the subsubcategory
  facets.forEach((facet) => {
    if (facet.facet3) {
      if (facet.facet3 === "Non specific") {
        facet.label = facet.facet2
      }
    }
  })

  let filters = "NOT item.published.status:embargo";
  filters = `(${filters}) AND `;
  const facetPropPaths = facetPropPathMapping.map(
    (f) => [f.facetPropPath, f.facetFilterPath]
  );
  facetPropPaths.map(([facetPropPath, facetFilterPath]) => {
    let facetsToBool = facets.filter(
      (facet) => facet.facetPropPath == facetPropPath
    );
    let orFilters = "";
    let andFilters = "";
    facetsToBool.map((facet) => {
      // for customization
      // facetSubPropPath have the priority
      let facetPropPathToUse = facet.facetSubPropPath ?
        facet.facetSubPropPath : facetFilterPath ?
          facetFilterPath : facetPropPath
      if (facet.AND) {
        andFilters += `AND "${facetPropPathToUse}":"${facet.label}"`;
      } else {
        orFilters += `"${facetPropPathToUse}":"${facet.label}" OR `;
      }
    });
    if (orFilters == "" && andFilters == "") {
      return;
    }
    orFilters = `(${orFilters.substring(0, orFilters.lastIndexOf(" OR "))})` // remove last OR

    filters += `${orFilters + andFilters} AND `; // Put them together
    // (Note that we add an extra AND in case there are facets at a higher level)

    filters = filters.split('()AND ').join(''); // Handle case where there where no OR facets
  });
  return filters.substring(0, filters.lastIndexOf(" AND "));
}

function removeShowAllFacets(facetArray) {
  return facetArray.filter(f => f.label !== 'Show all')
}

export { removeShowAllFacets }