dbmedialab/reader-critics

//
// LESERKRITIKK v2 (aka Reader Critics)
// Copyright (C) 2017 DB Medialab/Aller Media AS, Oslo, Norway
// https://github.com/dbmedialab/reader-critics/
//
// This program is free software: you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free Software
// Foundation, either version 3 of the License, or (at your option) any later
// version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with
// this program. If not, see <http://www.gnu.org/licenses/>.
//

import {
    Document,
    Model,
} from 'mongoose';

import {
    clearCollection,
    getCount,
    wrapFind,
} from 'app/db/common';

import { isTest } from 'app/util/applib';

import BasicPersistingService, {
    defaultLimit,
    defaultSkip,
    defaultSort,
} from './BasicPersistingService';

// Default implementations

export default function <T extends Document, X extends BasicPersistingService <Y>, Y> (
    serviceModel : Model <T>,
    serviceFunctions : Object
) : X
{
    const basicFunctions : BasicPersistingService <Y> = {
        clear: () : Promise <void> => {
            if (!isTest) {
                throw new Error('Function can only be used in TEST mode');
            }
            return clearCollection(serviceModel);
        },

        count: () : Promise <number> => getCount(serviceModel),

        getRange: (
            skip : number = defaultSkip,
            limit : number = defaultLimit,
            sort : Object = defaultSort
        ) : Promise <Y[]> => wrapFind<T, Y>(
            serviceModel.find().sort(sort).skip(skip).limit(limit)
        ),
    };

    return <X> Object.assign(basicFunctions, serviceFunctions);
}