se.ekonomipuls.proxy.configuration.AbstractConfiguratorProxy.java Source code

Introduction

Here is the source code for se.ekonomipuls.proxy.configuration.AbstractConfiguratorProxy.java

Source

/**
 * Copyright 2011 Magnus Andersson
 *
 * Licensed 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.
 */
package se.ekonomipuls.proxy.configuration;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import roboguice.inject.InjectResource;
import se.ekonomipuls.LogTag;
import se.ekonomipuls.R;
import se.ekonomipuls.actions.AddCategoryReportAction.AddCategoryAction;
import se.ekonomipuls.actions.AddFilterRuleAction;
import se.ekonomipuls.actions.AddTagAction;
import se.ekonomipuls.proxy.configuration.ConfigurationRemapUtil.SourceType;
import se.ekonomipuls.service.AndroidApiUtil;
import se.ekonomipuls.service.AndroidApiUtil.ConfigurationType;

import com.google.gson.stream.JsonReader;
import com.google.inject.Inject;
import com.google.inject.Singleton;

/**
 * @author Magnus Andersson
 * @since 17 jul 2011
 */
@Singleton
public abstract class AbstractConfiguratorProxy implements LogTag, ConfiguratorProxy {

    @Inject
    protected ConfigurationRemapUtil remapUtil;

    @Inject
    private AndroidApiUtil util;

    @InjectResource(R.string.gdocs_filter_rules_document_url)
    private String filterRulesUrl;

    final Map<ConfigurationType, SourceType> sourceMapping = new HashMap<ConfigurationType, SourceType>();
    private final Map<ConfigurationType, String> remoteUrlMapping = new HashMap<ConfigurationType, String>();

    /**
     * {@inheritDoc}
     * 
     * @throws IOException
     */
    public List<AddCategoryAction> getCategories() throws IOException {
        final JsonReader reader = getConfiguration(ConfigurationType.CATEGORIES);
        final List<AddCategoryAction> categories = remapUtil.mapCategories(reader,
                sourceMapping.get(ConfigurationType.CATEGORIES));
        reader.close();
        return categories;
    }

    /** {@inheritDoc} */
    public Map<String, List<AddTagAction>> getTags() throws IOException {
        final JsonReader reader = getConfiguration(ConfigurationType.TAGS);
        final Map<String, List<AddTagAction>> tags = remapUtil.mapTags(reader,
                sourceMapping.get(ConfigurationType.TAGS));
        reader.close();
        return tags;
    }

    /**
     * {@inheritDoc}
     * 
     * @throws IOException
     */
    public Map<String, List<AddFilterRuleAction>> getFilterRules() throws IOException {
        final JsonReader reader = getConfiguration(ConfigurationType.FILTER_RULES);
        final Map<String, List<AddFilterRuleAction>> filterRules = remapUtil.mapFilterRules(reader,
                sourceMapping.get(ConfigurationType.FILTER_RULES));
        reader.close();
        return filterRules;
    }

    private JsonReader getConfiguration(final ConfigurationType type) throws IOException {
        final SourceType source = sourceMapping.get(type);

        if (remoteUrlMapping.size() == 0) {
            initRemoteUrlMapping();
        }

        InputStream is = null;

        switch (source) {
        case LOCAL_JSON:
            is = util.getConfigurationFile(type);
            break;
        case LOCAL_SPREADSHEET_JSON:
            is = util.getConfigurationFile(type);
            break;
        case REMOTE_SPREADSHEET_JSON:
            is = util.queryRestUrlStream(remoteUrlMapping.get(type));
            break;
        }

        if (is == null) {
            return null;
        }

        return new JsonReader(new InputStreamReader(is, "UTF-8"));
    }

    /**
     * Do this after constructor finished to be able to access injected
     * resources.
     */
    private void initRemoteUrlMapping() {
        remoteUrlMapping.put(ConfigurationType.FILTER_RULES, filterRulesUrl);
    }
}