aswi2022code-of-duty-gitlab/frontend/src/features/TrackingTool/buildPathVariants.ts @ 5b1882cb

// Business logic for tracking tool

import { CatalogItemDto, PathDto } from '../../swagger/data-contracts'

// For more comprehensive code alias CatalogItemDto[] as path variant
export type PathVariant = CatalogItemDto[]

const cartesianProduct = (sets: CatalogItemDto[][]): CatalogItemDto[][] =>
    sets.reduce<CatalogItemDto[][]>(
        (results, ids) =>
            results
                .map((result) => ids.map((id) => [...result, id]))
                .reduce((nested, result) => [...nested, ...result]),
        [[]]
    )

export const buildPathVariants = (pathDto: PathDto): PathVariant[] => {
    if (!pathDto.foundCatalogItems) {
        return []
    }

    const catalogItems = pathDto.foundCatalogItems
    if (catalogItems.length === 1) {
        return catalogItems
    }

    return cartesianProduct(catalogItems)
}

export default buildPathVariants