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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

import {__DEV__} from '../../config';
import {createHashMap, isString, isArray, each, assert} from 'zrender/src/core/util';
import {parseXML} from 'zrender/src/tool/parseSVG';


var storage = createHashMap();

// For minimize the code size of common echarts package,
// do not put too much logic in this module.

export default {

    // The format of record: see `echarts.registerMap`.
    // Compatible with previous `echarts.registerMap`.
    registerMap: function (mapName, rawGeoJson, rawSpecialAreas) {

        var records;

        if (isArray(rawGeoJson)) {
            records = rawGeoJson;
        }
        else if (rawGeoJson.svg) {
            records = [{
                type: 'svg',
                source: rawGeoJson.svg,
                specialAreas: rawGeoJson.specialAreas
            }];
        }
        else {
            // Backward compatibility.
            if (rawGeoJson.geoJson && !rawGeoJson.features) {
                rawSpecialAreas = rawGeoJson.specialAreas;
                rawGeoJson = rawGeoJson.geoJson;
            }
            records = [{
                type: 'geoJSON',
                source: rawGeoJson,
                specialAreas: rawSpecialAreas
            }];
        }

        each(records, function (record) {
            var type = record.type;
            type === 'geoJson' && (type = record.type = 'geoJSON');

            var parse = parsers[type];

            if (__DEV__) {
                assert(parse, 'Illegal map type: ' + type);
            }

            parse(record);
        });

        return storage.set(mapName, records);
    },

    retrieveMap: function (mapName) {
        return storage.get(mapName);
    }

};

var parsers = {

    geoJSON: function (record) {
        var source = record.source;
        record.geoJSON = !isString(source)
            ? source
            : (typeof JSON !== 'undefined' && JSON.parse)
            ? JSON.parse(source)
            : (new Function('return (' + source + ');'))();
    },

    // Only perform parse to XML object here, which might be time
    // consiming for large SVG.
    // Although convert XML to zrender element is also time consiming,
    // if we do it here, the clone of zrender elements has to be
    // required. So we do it once for each geo instance, util real
    // performance issues call for optimizing it.
    svg: function (record) {
        record.svgXML = parseXML(record.source);
    }

};