001/**
002 * Copyright (c) 2015-2022, Michael Yang 杨福海 (fuhai999@gmail.com).
003 * <p>
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * http://www.apache.org/licenses/LICENSE-2.0
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package io.jboot.components.cache.interceptor;
017
018import com.jfinal.core.Controller;
019import com.jfinal.kit.LogKit;
020import com.jfinal.template.Env;
021import com.jfinal.template.io.Writer;
022import com.jfinal.template.stat.Scope;
023import io.jboot.utils.StrUtil;
024import io.jboot.web.controller.JbootControllerContext;
025import io.jboot.web.directive.base.JbootDirectiveBase;
026
027import java.io.IOException;
028
029public class ParaDirective extends JbootDirectiveBase {
030
031    @Override
032    public void onRender(Env env, Scope scope, Writer writer) {
033
034        Controller controller = JbootControllerContext.get();
035        if (controller == null) {
036            throw new IllegalStateException("#para(...) directive only use for controller." + getLocation());
037        }
038
039        String key = getPara(0, scope);
040        String defaultValue = getPara(1, scope);
041
042        if (StrUtil.isBlank(key)) {
043            throw new IllegalArgumentException("#para(...) argument must not be empty." + getLocation());
044        }
045
046        String value = controller.getPara(key);
047        if (StrUtil.isBlank(value)) {
048            value = StrUtil.isNotBlank(defaultValue) ? defaultValue : "";
049        }
050
051        try {
052            writer.write(value);
053        } catch (IOException e) {
054            LogKit.error(e.toString(), e);
055        }
056    }
057
058    public static Object para(String key) {
059        return para(key, null);
060    }
061
062    public static Object para(String key, Object defaultValue) {
063        Controller controller = JbootControllerContext.get();
064        if (controller == null) {
065            throw new IllegalStateException("para(...) method only use for controller.");
066        }
067
068        String value = controller.get(key);
069
070        if (StrUtil.isNumeric(value)) {
071            return Long.valueOf(value);
072        }
073
074        if (StrUtil.isDecimal(value)) {
075            return Double.parseDouble(value);
076        }
077
078        return StrUtil.isNotBlank(value) ? value : defaultValue;
079    }
080}
081