/*
 * jPOS Project [http://jpos.org]
 * Copyright (C) 2000-2023 jPOS Software SRL
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.jpos.q2.cli.deploy;

import java.io.File;

import org.jpos.q2.CLICommand;
import org.jpos.q2.CLIContext;
import org.jpos.q2.Q2;
/**
* CLI implementation - Deploy subsystem
* 
* @author Felipph Calado - luizfelipph@gmail.com
*/
public class LIST implements CLICommand {

    @Override
    public void exec(CLIContext ctx, String[] args) throws Exception {
        Q2 q2 = ctx.getCLI().getQ2();
        File deployDir = q2.getDeployDir();
        
        ctx.println(printDirectoryTree(deployDir));
        return;
    }

    /**
     * Utils
     */
    public static String printDirectoryTree(File folder) {
        if (!folder.isDirectory()) {
            throw new IllegalArgumentException("folder is not a Directory");
        }
        int indent = 0;
        StringBuilder sb = new StringBuilder();
        printDirectoryTree(folder, indent, sb);
        return sb.toString();
    }

    private static void printDirectoryTree(File folder, int indent, StringBuilder sb) {
        if (!folder.isDirectory()) {
            throw new IllegalArgumentException("folder is not a Directory");
        }
        sb.append(getIndentString(indent));
        sb.append("+--");
        sb.append(folder.getName());
        sb.append("/");
        sb.append("\n");
        for (File file : folder.listFiles()) {
            if (file.isDirectory()) {
                printDirectoryTree(file, indent + 1, sb);
            } else {
                printFile(file, indent + 1, sb);
            }
        }

    }

    private static void printFile(File file, int indent, StringBuilder sb) {
        sb.append(getIndentString(indent));
        sb.append("+--");
        sb.append(file.getName());
        sb.append("\n");
    }

    private static String getIndentString(int indent) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < indent; i++) {
            sb.append("|  ");
        }
        return sb.toString();
    }

}
