package com.lf.server.helper;

import com.lf.server.config.PropertiesConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.io.File;

/**
 * 路径帮助类
 * @author WWW
 */
@Component
public class PathHelper {
    @Autowired
    private PropertiesConfig propertiesConfig;

    private static int MAX_FILES = 2000;

    private static int importPath = 1;

    private static int exportPath = 1;

    private static int uploadPath = 1;

    private static int sharePath = 1;

    /**
     * 初始化
     */
    public void init() {
        importPath = getSubPath(propertiesConfig.getImportPath(), importPath);
        exportPath = getSubPath(propertiesConfig.getExportPath(), exportPath);
        uploadPath = getSubPath(propertiesConfig.getUploadPath(), uploadPath);
        sharePath = getSubPath(propertiesConfig.getSharePath(), sharePath);
    }

    private static int getSubPath(String parentPath, int subPath) {
        while (true) {
            String path = parentPath + File.separator + subPath;

            File file = new File(path);
            if (!file.exists() && !file.isDirectory()) {
                file.mkdirs();
                return subPath;
            }

            File[] files = file.listFiles();
            if (files.length < MAX_FILES) {
                return subPath;
            }

            subPath++;
        }
    }

    /**
     * 获取导入目录
     *
     * @return
     */
    public String getImportPath() {
        importPath = getSubPath(propertiesConfig.getImportPath(), importPath);

        return propertiesConfig.getImportPath() + File.separator + importPath;
    }

    /**
     * 获取出图目录
     *
     * @return
     */
    public String getExportPath() {
        exportPath = getSubPath(propertiesConfig.getExportPath(), exportPath);

        return propertiesConfig.getExportPath() + File.separator + exportPath;
    }

    /**
     * 获取上传目录
     *
     * @return
     */
    public String getUploadPath() {
        uploadPath = getSubPath(propertiesConfig.getUploadPath(), uploadPath);

        return propertiesConfig.getUploadPath() + File.separator + uploadPath;
    }

    /**
     * 获取共享目录
     *
     * @return
     */
    public String getSharePath() {
        sharePath = getSubPath(propertiesConfig.getSharePath(), sharePath);

        return propertiesConfig.getSharePath() + File.separator + sharePath;
    }
}