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/*
 *  Copyright 2019 the original author or authors.
 *
 *  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 jmms.plugins.sfs;

import leap.lang.Strings;
import leap.lang.logging.Log;
import leap.lang.logging.LogFactory;
import leap.lang.path.Paths;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.boot.context.properties.ConfigurationProperties;

import java.io.File;
import java.nio.file.Files;
import java.nio.file.Path;

@ConfigurationProperties("sfs")
public class SfsConfig implements InitializingBean {

    private static final Log log = LogFactory.get(SfsConfig.class);

    private static final String DEFAULT_SIGN_SECRET = "__sfs_sign_secret_need_to_change__";

    protected String  dir;
    protected int     maxWaitingCommits     = 10240;
    protected int     waitingCommitExpires  = 30;
    protected int     signExpires           = 30;
    protected boolean fileLastAccessEnabled = true;
    protected String  signSecret            = DEFAULT_SIGN_SECRET;

    private Path dirPath;

    public Path getDirPath() {
        return dirPath;
    }

    public String getDir() {
        return dir;
    }

    public void setDir(String dir) {
        this.dir = dir;
    }

    public int getMaxWaitingCommits() {
        return maxWaitingCommits;
    }

    public void setMaxWaitingCommits(int maxWaitingCommits) {
        this.maxWaitingCommits = maxWaitingCommits;
    }

    public int getWaitingCommitExpires() {
        return waitingCommitExpires;
    }

    public void setWaitingCommitExpires(int waitingCommitExpires) {
        this.waitingCommitExpires = waitingCommitExpires;
    }

    public int getSignExpires() {
        return signExpires;
    }

    public void setSignExpires(int signExpires) {
        this.signExpires = signExpires;
    }

    public boolean isFileLastAccessEnabled() {
        return fileLastAccessEnabled;
    }

    public void setFileLastAccessEnabled(boolean fileLastAccessEnabled) {
        this.fileLastAccessEnabled = fileLastAccessEnabled;
    }

    public String getSignSecret() {
        return signSecret;
    }

    public void setSignSecret(String signSecret) {
        this.signSecret = signSecret;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        if (Strings.isEmpty(dir)) {
            if (new File("./target").isDirectory() && new File("./src/").isDirectory()) {
                dir = "./target/upload";
            } else {
                dir = "./upload/";
            }
        }
        File file = new File(dir);
        if (!file.exists()) {
            Files.createDirectories(file.toPath());
        }
        if (!file.isDirectory()) {
            throw new IllegalStateException("Path '" + dir + "' must be a directory");
        }
        if (!file.canWrite()) {
            throw new IllegalStateException("Path '" + dir + "' must be writable");
        }
        dir = Paths.suffixWithoutSlash(dir);
        dirPath = java.nio.file.Paths.get(dir).toAbsolutePath().normalize();

        if(Strings.isEmpty(signSecret)) {
            throw new IllegalStateException("The property 'sfs.signSecret' must be configured");
        }
        if(signSecret.equals(DEFAULT_SIGN_SECRET)) {
            log.error("\n\n" +
                        "!!!WARNING!!!\n" +
                        "*********************************************************************************\n" +
                        "  Don't use default sign secret, change it by config property 'sfs.signSecret'\n" +
                        "*********************************************************************************\n");
        }
    }
}