// Copyright (C) The Arvados Authors. All rights reserved.
//
// SPDX-License-Identifier: AGPL-3.0

import { DataExplorerMiddlewareService } from "../data-explorer/data-explorer-middleware-service";
import { FavoritePanelColumnNames, FavoritePanelFilter } from "~/views/favorite-panel/favorite-panel";
import { RootState } from "../store";
import { DataColumns } from "~/components/data-table/data-table";
import { ServiceRepository } from "~/services/services";
import { SortDirection } from "~/components/data-table/data-column";
import { FilterBuilder } from "~/services/api/filter-builder";
import { updateFavorites } from "../favorites/favorites-actions";
import { favoritePanelActions } from "./favorite-panel-action";
import { Dispatch, MiddlewareAPI } from "redux";
import { OrderBuilder, OrderDirection } from "~/services/api/order-builder";
import { LinkResource } from "~/models/link";
import { GroupContentsResource, GroupContentsResourcePrefix } from "~/services/groups-service/groups-service";
import { resourcesActions } from "~/store/resources/resources-actions";
import { snackbarActions } from '~/store/snackbar/snackbar-actions';
import { getDataExplorer } from "~/store/data-explorer/data-explorer-reducer";
import { loadMissingProcessesInformation } from "~/store/project-panel/project-panel-middleware-service";

export class FavoritePanelMiddlewareService extends DataExplorerMiddlewareService {
    constructor(private services: ServiceRepository, id: string) {
        super(id);
    }

    async requestItems(api: MiddlewareAPI<Dispatch, RootState>) {
        const dataExplorer = getDataExplorer(api.getState().dataExplorer, this.getId());
        if (!dataExplorer) {
            api.dispatch(favoritesPanelDataExplorerIsNotSet());
        } else {

            const columns = dataExplorer.columns as DataColumns<string, FavoritePanelFilter>;
            const sortColumn = dataExplorer.columns.find(c => c.sortDirection !== SortDirection.NONE);
            const typeFilters = this.getColumnFilters(columns, FavoritePanelColumnNames.TYPE);

            const linkOrder = new OrderBuilder<LinkResource>();
            const contentOrder = new OrderBuilder<GroupContentsResource>();

            if (sortColumn && sortColumn.name === FavoritePanelColumnNames.NAME) {
                const direction = sortColumn.sortDirection === SortDirection.ASC
                    ? OrderDirection.ASC
                    : OrderDirection.DESC;

                linkOrder.addOrder(direction, "name");
                contentOrder
                    .addOrder(direction, "name", GroupContentsResourcePrefix.COLLECTION)
                    .addOrder(direction, "name", GroupContentsResourcePrefix.PROCESS)
                    .addOrder(direction, "name", GroupContentsResourcePrefix.PROJECT);
            }
            try {
                const response = await this.services.favoriteService
                    .list(this.services.authService.getUuid()!, {
                        limit: dataExplorer.rowsPerPage,
                        offset: dataExplorer.page * dataExplorer.rowsPerPage,
                        linkOrder: linkOrder.getOrder(),
                        contentOrder: contentOrder.getOrder(),
                        filters: new FilterBuilder()
                            .addIsA("headUuid", typeFilters.map(filter => filter.type))
                            .addILike("name", dataExplorer.searchValue)
                            .getFilters()
                    });
                api.dispatch(resourcesActions.SET_RESOURCES(response.items));
                await api.dispatch<any>(loadMissingProcessesInformation(response.items));
                api.dispatch(favoritePanelActions.SET_ITEMS({
                    items: response.items.map(resource => resource.uuid),
                    itemsAvailable: response.itemsAvailable,
                    page: Math.floor(response.offset / response.limit),
                    rowsPerPage: response.limit
                }));
                api.dispatch<any>(updateFavorites(response.items.map(item => item.uuid)));
            } catch (e) {
                api.dispatch(favoritePanelActions.SET_ITEMS({
                    items: [],
                    itemsAvailable: 0,
                    page: 0,
                    rowsPerPage: dataExplorer.rowsPerPage
                }));
            }
        }
    }
}

const favoritesPanelDataExplorerIsNotSet = () =>
    snackbarActions.OPEN_SNACKBAR({
        message: 'Favorites panel is not ready.'
    });