Class SearchFilters

helpers/search/filters.js:4–119

import { isString } from '~/helpers/check-types.js'

export class SearchFilters {
    constructor({
        initialFilters = {}
    } = {}) {
        this.initialFilters = initialFilters

        this.filters = {
            ...initialFilters
        }
    }

    get list () {
        return Object.entries( this.filters ).map( ([ filterKey, filterValue ]) => {
            return `${ filterKey }${ filterSeparator }${ filterValue }`
        } )
    }

    get asQuery () {
        return this.list.join(' ')
    }

    get asPagefindFilters () {
        return Object.fromEntries( Object.entries( this.filters ).map( ([ filterKey, filterValue ]) => {
            return [ filterKey, [ filterValue ] ]
        }) )
    }

    getByKey ( key ) {
        return `${ key }${ filterSeparator }${ this.filters[ key ] }`
    }

    isQueryValue ( filterNameOrQueryValue ) {
        return filterNameOrQueryValue.includes( filterSeparator )
    }

    getKeyAndValue ( filterQueryValue ) {
        const key = filterQueryValue.substring(0, filterQueryValue.indexOf( filterSeparator ))
        const value = filterQueryValue.substring(filterQueryValue.indexOf( filterSeparator )+1)

        return { key, value }
    }

    getFilterNameAndValueFromString ( filterNameOrQueryValue ) {
        if ( this.isQueryValue( filterNameOrQueryValue ) ) {
            return this.getKeyAndValue( filterNameOrQueryValue )
        }

        return {
            key: filterNameOrQueryValue,
            value: null
        }
    }

    remove ( filterName ) {
        if ( this.isQueryValue( filterName ) ) throw new Error(`${ filterName } is not a valid filter name`)

        delete this.filters[ filterName ]
    }