// (C) 2007-2019 GoodData Corporation
import { IObjectMeta } from "./ObjectMeta";
import { IMetadataObject } from "./MetadataObject";
import { INestedAttributeDisplayForm } from "./NestedAttributeDisplayForm";
import { IWrappedAttribute } from "./Attribute";

export interface IDateAttributeFragment {
    type: string; // type of date attribute (e.g. 'GDC.time.date', 'GDC.time.quarter', etc.)
    attributeMeta: IObjectMeta;
    defaultDisplayFormMeta: IObjectMeta;
}

export interface IWrappedDateDataSet {
    relevance: number;

    availableDateAttributes?: IDateAttributeFragment[];

    meta: IObjectMeta;
}

export interface IDateAttribute extends IMetadataObject {
    type: string; // type of date attribute (e.g. 'GDC.time.date', 'GDC.time.quarter', etc.)
    meta: IObjectMeta;
    displayForms: INestedAttributeDisplayForm[];
}

export interface IDateDataSet extends IMetadataObject {
    relevance: number;

    availableDateAttributes?: IDateAttribute[];
}

export function isDateDataSet(object: IMetadataObject): object is IDateDataSet {
    return object.meta.category === "dateDataSet";
}

export function isDateAttribute(object: IMetadataObject): object is IDateAttribute {
    return object.meta.category === "attribute" && (object as IDateAttribute).type !== undefined;
}

export function wrapDateDataSet(object: IDateDataSet): IWrappedDateDataSet {
    return {
        relevance: object.relevance,
        meta: object.meta,
        availableDateAttributes: object.availableDateAttributes.map(attribute => {
            return {
                type: attribute.type,
                attributeMeta: attribute.meta,
                defaultDisplayFormMeta: attribute.displayForms[0].meta,
            };
        }),
    };
}

// get dateAttribute as MD object
export function wrapDateAttribute(object: IDateAttribute): IWrappedAttribute {
    return {
        attribute: {
            content: {
                type: object.type,
                displayForms: object.displayForms,
            },
            meta: object.meta,
        },
    };
}