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/**
 * Copyright (c) 2011-2013, kidzhou 周磊 ([email protected])
 *
 * 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 com.jfinal.ext.route;

import java.util.List;

import com.google.common.base.Preconditions;
import com.google.common.collect.Lists;
import com.jfinal.config.Routes;
import com.jfinal.core.Controller;
import com.jfinal.ext.kit.ClassSearcher;
import com.jfinal.kit.StrKit;
import com.jfinal.log.Log;

public class AutoBindRoutes extends Routes {

    private boolean autoScan = true;

    private List> excludeClasses = Lists.newArrayList();

    private boolean includeAllJarsInLib;

    private List includeJars = Lists.newArrayList();

    protected final Log logger = Log.getLog(getClass());

    private String suffix = "Controller";

    public AutoBindRoutes autoScan(boolean autoScan) {
        this.autoScan = autoScan;
        return this;
    }

    @SuppressWarnings("unchecked")
	public AutoBindRoutes addExcludeClasses(Class... clazzes) {
        if (clazzes != null) {
            for (Class clazz : clazzes) {
                excludeClasses.add(clazz);
            }
        }
        return this;
    }

    public AutoBindRoutes addExcludeClasses(List> clazzes) {
        excludeClasses.addAll(clazzes);
        return this;
    }

    public AutoBindRoutes addJars(String... jars) {
        if (jars != null) {
            for (String jar : jars) {
                includeJars.add(jar);
            }
        }
        return this;
    }

    @Override
    @SuppressWarnings({ "rawtypes", "unchecked" })
    public void config() {
        List> controllerClasses = ClassSearcher.of(Controller.class)
                .includeAllJarsInLib(includeAllJarsInLib).injars(includeJars).search();
        ControllerBind controllerBind = null;
        for (Class controller : controllerClasses) {
            if (excludeClasses.contains(controller)) {
                continue;
            }
            controllerBind = (ControllerBind) controller.getAnnotation(ControllerBind.class);
            if (controllerBind == null) {
                if (!autoScan) {
                    continue;
                }
                this.add(controllerKey(controller), controller);
                logger.debug("routes.add(" + controllerKey(controller) + ", " + controller.getName() + ")");
            } else if (StrKit.isBlank(controllerBind.viewPath())) {
                this.add(controllerBind.controllerKey(), controller);
                logger.debug("routes.add(" + controllerBind.controllerKey() + ", " + controller.getName() + ")");
            } else {
                this.add(controllerBind.controllerKey(), controller, controllerBind.viewPath());
                logger.debug("routes.add(" + controllerBind.controllerKey() + ", " + controller + ","
                        + controllerBind.viewPath() + ")");
            }
        }
    }

    private String controllerKey(Class clazz) {
        Preconditions.checkArgument(clazz.getSimpleName().endsWith(suffix),
                clazz.getName()+" is not annotated with @ControllerBind and not end with " + suffix);
        String controllerKey = "/" + StrKit.firstCharToLowerCase(clazz.getSimpleName());
        controllerKey = controllerKey.substring(0, controllerKey.indexOf(suffix));
        return controllerKey;
    }

    public AutoBindRoutes includeAllJarsInLib(boolean includeAllJarsInLib) {
        this.includeAllJarsInLib = includeAllJarsInLib;
        return this;
    }

    public AutoBindRoutes suffix(String suffix) {
        this.suffix = suffix;
        return this;
    }

}