/**
 * Copyright (c) 2016, biezhi 王爵 (biezhi.me@gmail.com)
 * <p>
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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 com.blade.mvc.view;

import com.blade.kit.Assert;
import com.blade.mvc.view.resolve.DefaultJSONParser;
import com.blade.mvc.view.resolve.JSONParser;
import com.blade.mvc.view.template.DefaultEngine;
import com.blade.mvc.view.template.TemplateEngine;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * ViewSettings
 *
 * @author <a href="mailto:biezhi.me@gmail.com" target="_blank">biezhi</a>
 * @since 1.6.6
 */
public final class ViewSettings {

    private static final Logger LOGGER = LoggerFactory.getLogger(ViewSettings.class);

    private JSONParser jsonParser = new DefaultJSONParser();
    private TemplateEngine templateEngine = new DefaultEngine();
    private String view404 = "404.html";
    private String view500 = "500.html";

    private ViewSettings() {
    }

    static final class ViewSettingsHolder {
        private static final ViewSettings $ = new ViewSettings();
    }

    public static ViewSettings $() {
        return ViewSettingsHolder.$;
    }

    public ViewSettings JSONParser(JSONParser jsonParser) {
        Assert.notNull(jsonParser);
        LOGGER.debug("Switch JSONParser With [{}]", jsonParser);
        this.jsonParser = jsonParser;
        return this;
    }

    public JSONParser JSONParser() {
        return this.jsonParser;
    }

    public String toJSONString(Object object) {
        return jsonParser.toJSONSting(object);
    }

    /**
     * Setting Render Engin, Default is static file render
     *
     * @param templateEngine Render engine object
     * @return return blade
     */
    public ViewSettings templateEngine(TemplateEngine templateEngine) {
        Assert.notNull(templateEngine);
        LOGGER.debug("Switch TemplateEngine With [{}]", templateEngine);
        this.templateEngine = templateEngine;
        return this;
    }

    /**
     * @return Return Current TemplateEngine
     */
    public TemplateEngine templateEngine() {
        return this.templateEngine;
    }

    public String getView404() {
        return view404;
    }

    public ViewSettings setView404(String view404) {
        this.view404 = view404;
        return this;
    }

    public String getView500() {
        return view500;
    }

    public ViewSettings setView500(String view500) {
        this.view500 = view500;
        return this;
    }

}