export type FilterParamValue = string | number | Date | string[];

export interface IFilter<T extends string> {
    name: T;
    params?: Record<string, FilterParamValue>;
}

export interface IBasicFilterSegment<T extends string> extends IFilter<T> {
    type: 'filter';
}

export type IFilterSegment<T extends string> = IFilterSegmentExpression<T> | IBasicFilterSegment<T>;
export type SegmentOperator = 'and' | 'or';
export interface IFilterSegmentExpression<T extends string> {
    type: SegmentOperator;
    predicates: IFilterSegment<T>[];
}

enum FilterNames  {
    BarIs = 'bar_is',
    BazIs = 'baz_is'
}

enum DimensionType {
    Bar = 'bar',
    Baz = 'baz'
}

export type IDimension = {
    id: string;
    type: DimensionType.Bar;
} | {
    id: string;
    label: string;
    type: DimensionType.Baz;
};

const transform = (dimensions: IDimension[]): IFilterSegment<FilterNames> => {
    return {
        type: 'and',
        predicates: dimensions.map(dimension => {
            switch (dimension.type) {
                case DimensionType.Bar: {
                    return {
                        type: 'filter',
                        name: FilterNames.BarIs,
                        params: {
                            barId: dimension.id
                        }
                    }
                }
                case DimensionType.Baz: {
                    return {
                        type: 'filter',
                        name: FilterNames.BazIs,
                        params: {
                            bazId: dimension.id
                        }
                    }
                }
            }
        })
    }
}