// (C) 2007-2019 GoodData Corporation
import { IMetadataObject } from "./MetadataObject";

export interface IAttributeFilter {
    attributeFilter: {
        displayForm: string;
        negativeSelection: boolean;
        attributeElements: string[];
    };
}

export interface IDateFilter {
    dateFilter: {
        type: "relative" | "absolute";
        granularity: string;
        from?: number;
        to?: number;
        dataSet?: string;
        attribute?: string;
    };
}

export type PossibleFilters = IAttributeFilter | IDateFilter;

export interface IFilterContext extends IMetadataObject {
    content: {
        filters: PossibleFilters[];
    };
}

export interface IWrappedFilterContext {
    filterContext: IFilterContext;
}

export function isFilterContext(object: IMetadataObject): object is IFilterContext {
    return object.meta.category === "filterContext";
}