import { Contract } from "@paperbits/common";
import { IModelBinder } from "@paperbits/common/editing";
import { IPermalinkResolver } from "@paperbits/common/permalinks";
import { ProductListModel } from "./subscriptionListModel";
import { ProductListContract } from "./subscriptionListContract";


export class SubscriptionListModelBinder implements IModelBinder<ProductListModel> {
    constructor(private readonly permalinkResolver: IPermalinkResolver) { }
    
    public canHandleModel(model: Object): boolean {
        return model instanceof ProductListModel;
    }

    public canHandleContract(contract: Contract): boolean {
        return contract.type === "subscription-list"
            || contract.type === "subscriptionList"; // for backward compatibility
    }

    public async contractToModel(contract: ProductListContract): Promise<ProductListModel> {
        const model = new ProductListModel();

        model.layout = contract.itemStyleView;

        model.allowSelection = contract.allowSelection;

        if (contract.detailsPageHyperlink) {
            model.detailsPageHyperlink = await this.permalinkResolver.getHyperlinkFromContract(contract.detailsPageHyperlink);
        }

        return model;
    }

    public modelToContract(model: ProductListModel): Contract {
        const contract: ProductListContract = {
            type: "subscription-list",
            itemStyleView: model.layout,
            allowSelection: model.allowSelection,
            detailsPageHyperlink: model.detailsPageHyperlink
                ? {
                    target: model.detailsPageHyperlink.target,
                    targetKey: model.detailsPageHyperlink.targetKey
                }
                : null
        };

        return contract;
    }
}