/*
 * eGov suite of products aim to improve the internal efficiency,transparency,
 *    accountability and the service delivery of the government  organizations.
 *
 *     Copyright (C) <2015>  eGovernments Foundation
 *
 *     The updated version of eGov suite of products as by eGovernments Foundation
 *     is available at http://www.egovernments.org
 *
 *     This program is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program. If not, see http://www.gnu.org/licenses/ or
 *     http://www.gnu.org/licenses/gpl.html .
 *
 *     In addition to the terms of the GPL license to be adhered to in using this
 *     program, the following additional terms are to be complied with:
 *
 *         1) All versions of this program, verbatim or modified must carry this
 *            Legal Notice.
 *
 *         2) Any misrepresentation of the origin of the material is prohibited. It
 *            is required that all modified versions of this material be marked in
 *            reasonable ways as different from the original version.
 *
 *         3) This license does not grant any rights to any user of the program
 *            with regards to rights under trademark law for use of the trade names
 *            or trademarks of eGovernments Foundation.
 *
 *   In case of any queries, you can reach eGovernments Foundation at contact@egovernments.org.
 */

package org.egov.infra.config.cache;

import org.egov.infra.config.cache.resolver.MultiTenantCacheResolver;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.CacheResolver;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DependsOn;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.core.RedisTemplate;

import javax.annotation.Resource;
import java.util.List;

@Configuration
@EnableCaching(proxyTargetClass = true)
@DependsOn("applicationConfiguration")
public class CacheConfiguration extends CachingConfigurerSupport {

    @Autowired
    private RedisTemplate redisTemplate;
    private List<String> cities;

    @Bean
    public CacheResolver cacheResolver() {
        return new MultiTenantCacheResolver(cacheManager());
    }

    @Bean
    public KeyGenerator keyGenerator() {
        return (object, method, args) -> {
            StringBuilder sb = new StringBuilder();
            sb.append(object.getClass().getSimpleName());
            sb.append(method.getName());
            for (Object obj : args) {
                sb.append(obj);
            }
            return sb.toString();
        };
    }

    @Bean
    public CacheManager cacheManager() {
        RedisCacheManager redisCacheManager = new RedisCacheManager(redisTemplate);
        redisCacheManager.setTransactionAware(true);
        redisCacheManager.setCacheNames(cities);
        redisCacheManager.setUsePrefix(true);
        redisCacheManager.setDefaultExpiration(60*60);
        return redisCacheManager;
    }

    @Resource(name = "cities")
    public void setCities(List<String> cities) {
        this.cities = cities;
    }

}