# Source: offline/net/IndexDBOfflineLoader.js

    /**
     * The copyright in this software is being made available under the BSD License,
     * included below. This software may be subject to other third party and contributor
     * rights, including patent rights, and no such rights are granted under this license.
     *
     * Copyright (c) 2013, Dash Industry Forum.
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without modification,
     * are permitted provided that the following conditions are met:
     *  * Redistributions of source code must retain the above copyright notice, this
     *  list of conditions and the following disclaimer.
     *  * Redistributions in binary form must reproduce the above copyright notice,
     *  this list of conditions and the following disclaimer in the documentation and/or
     *  other materials provided with the distribution.
     *  * Neither the name of Dash Industry Forum nor the names of its
     *  contributors may be used to endorse or promote products derived from this software
     *  without specific prior written permission.
     *
     *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
     *  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     *  IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     *  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     *  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     *  POSSIBILITY OF SUCH DAMAGE.
     */
    import IndexDBStore from '../storage/IndexDBStore';

    function IndexDBOfflineLoader(config) {
        config = config || {};
        const context = this.context;
        const urlUtils = config.urlUtils;
        const constants = config.constants;
        const dashConstants = config.dashConstants;

        let instance,
            indexDBStore;

        function setup() {
            indexDBStore = IndexDBStore(context).getInstance();
        }

        function getManifestId (url) {
            let myURL = urlUtils.removeHostname(url);
            var parts = myURL.split('/');
            return parts[0];
        }
        /**
         * Load manifest or fragment from indexeddb database
         * @param {object} config configuration of request
         */
        function load(config) {
            if (config.request) {
                let manifestId = getManifestId(config.request.url);
                if (manifestId % 1 === 0) {
                    if (
                        config.request.mediaType === constants.AUDIO ||
                        config.request.mediaType === constants.VIDEO ||
                        config.request.mediaType === constants.TEXT ||
                        config.request.mediaType === constants.MUXED ||
                        config.request.mediaType === constants.IMAGE
                    ) {
                        let suffix = config.request.type === 'InitializationSegment' ? 'init' : config.request.index;
                        let key = config.request.representationId + '_' + suffix;
                        indexDBStore.getFragmentByKey(manifestId, key).then(function (fragment) {
                            config.success(fragment, null, config.request.url, constants.ARRAY_BUFFER);
                        }).catch(function (err) {
                            config.error(err);
                        });
                    } else if (config.request.type === dashConstants.MPD) {
                        indexDBStore.getManifestById(manifestId).then(function (item) {
                            indexDBStore.createFragmentStore(item.fragmentStore);
                            config.success(item.manifest, null, config.request.url, constants.XML);
                        }).catch(function (err) {
                            config.error(config.request, 404, err);
                        });
                    }
                } else {
                    config.error(config.request, null, 'MediaType can not be found');
                }
            }
        }

        function abort() {
            // nothing to do
        }

        setup();

        instance = {
            load: load,
            abort: abort
        };

        return instance;
    }

    IndexDBOfflineLoader.__dashjs_factory_name = 'IndexDBOfflineLoader';
    const factory = dashjs.FactoryMaker.getClassFactory(IndexDBOfflineLoader); /* jshint ignore:line */
    export default factory;

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