package com.lf.server.helper;

import com.lf.server.config.PropertiesConfig;
import com.lf.server.entity.all.SettingData;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.io.File;
import java.util.Date;

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

    private static int importPath = 1;

    private static int exportPath = 1;

    private static int uploadPath = 1;

    private static int sharePath = 1;

    private final static double D90 = 90;

    private final static Log log = LogFactory.getLog(PathHelper.class);

    public PropertiesConfig getConfig() {
        return config;
    }

    public static int getImportPath() {
        return importPath;
    }

    public static int getExportPath() {
        return exportPath;
    }

    public static int getUploadPath() {
        return uploadPath;
    }

    public static int getSharePath() {
        return sharePath;
    }

    /**
     * 初始化
     */
    public void init() {
        importPath = getSubPath(config.getImportPath(), importPath);
        exportPath = getSubPath(config.getExportPath(), exportPath);
        uploadPath = getSubPath(config.getUploadPath(), uploadPath);
        sharePath = getSubPath(config.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 < SettingData.MAX_FILES) {
                return subPath;
            }

            subPath++;
        }
    }

    /**
     * 获取导入目录
     */
    public String getImportFullPath() {
        importPath = getSubPath(config.getImportPath(), importPath);

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

    /**
     * 获取出图目录
     */
    public String getExportFullPath() {
        exportPath = getSubPath(config.getExportPath(), exportPath);

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

    /**
     * 获取上传目录
     */
    public String getUploadFullPath() {
        uploadPath = getSubPath(config.getUploadPath(), uploadPath);

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

    /**
     * 获取共享目录
     */
    public String getShareFullPath() {
        sharePath = getSubPath(config.getSharePath(), sharePath);

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

    /**
     * 获取临时路径
     */
    public String getTempPath() {
        String tempName = StringHelper.YMD_HM_FORMAT.format(new Date());
        String tempPath = config.getTempPath();
        String path = tempPath + File.separator + tempName;

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

        double ran = Math.random() * 99;
        if (ran > D90) {
            deleteOldPath(tempPath);
        }

        return path;
    }

    /**
     * 删除旧路径
     */
    public void deleteOldPath(String tempPath) {
        try {
            File file = new File(tempPath);
            String str = StringHelper.YMD__FORMAT.format(new Date());

            File[] files = file.listFiles();
            for (File f : files) {
                if (f.getPath().indexOf(str) > -1) {
                    continue;
                }

                deleteFiles(f);
            }
        } catch (Exception ex) {
            log.error(ex.getMessage() + ex.getStackTrace() + "\n");
        }
    }

    /**
     * 级联删除文件
     */
    public void deleteFiles(File file) {
        if (file == null || !file.exists()) {
            return;
        }

        if (file.isDirectory()) {
            File[] files = file.listFiles();
            for (File f : files) {
                if (f.isDirectory()) {
                    deleteFiles(f);
                } else {
                    f.delete();
                }
            }
        }
        file.delete();
    }
}