package com.xujun.contralayout.utils;

/**
 * Created by Domen、on 2016/4/28.
 */

import android.os.Environment;
import android.text.TextUtils;
import android.util.Log;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Formatter;
import java.util.Locale;

/**
 * Log工具，类似android.util.Log。 tag自动产生，格式:
 * customTagPrefix:className.methodName(Line:lineNumber),
 * customTagPrefix为空时只输出：className.methodName(Line:lineNumber)。
 */
public class LUtils {

    public static String customTagPrefix = "xujun";  // 自定义Tag的前缀，可以是作者名
    public static boolean isSaveLog = false;    // 是否把保存日志到SD卡中
    public static final String LOG_PATH = Environment.getExternalStorageDirectory().getPath(); // SD卡中的根目录

    private static DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd", Locale.SIMPLIFIED_CHINESE);

    private LUtils() {
    }

    // 容许打印日志的类型，默认是true，设置为false则不打印
    public static boolean allowD = true;
    public static boolean allowE = true;
    public static boolean allowI = true;
    public static boolean allowV = true;
    public static boolean allowW = true;
    public static boolean allowWtf = true;

    private static String generateTag(StackTraceElement caller) {
        String tag = "%s.%s(Line:%d)"; // 占位符
        String callerClazzName = caller.getClassName(); // 获取到类名
        callerClazzName = callerClazzName.substring(callerClazzName.lastIndexOf(".") + 1);
        tag = String.format(Locale.ENGLISH, tag, callerClazzName, caller.getMethodName(), caller.getLineNumber()); // 替换
        tag = TextUtils.isEmpty(customTagPrefix) ? tag : customTagPrefix + ":" + tag;

        return tag;
    }

    /**
     * 自定义的logger
     */
    public static CustomLogger customLogger;

    public interface CustomLogger {
        void d(String tag, String content);
        void d(String tag, String content, Throwable e);

        void e(String tag, String content);
        void e(String tag, String content, Throwable e);

        void i(String tag, String content);
        void i(String tag, String content, Throwable e);

        void v(String tag, String content);
        void v(String tag, String content, Throwable e);

        void w(String tag, String content);
        void w(String tag, String content, Throwable e);
        void w(String tag, Throwable tr);

        void wtf(String tag, String content);
        void wtf(String tag, String content, Throwable e);
        void wtf(String tag, Throwable tr);
    }

    public static void d(String content) {
        if (!allowD) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.d(tag, content);
        } else {
            Log.d(tag, content);
        }
    }

    public static void d(String content, Throwable e) {
        if (!allowD) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.d(tag, content, e);
        } else {
            Log.d(tag, content, e);
        }
    }

    public static void e(String content) {
        if (!allowE) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.e(tag, content);
        } else {
            Log.e(tag, content);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, content);
        }
    }

    public static void e(Throwable e) {
        if (!allowE) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.e(tag, "error", e);
        } else {
            Log.e(tag, e.getMessage(), e);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, e.getMessage());
        }
    }

    public static void e(String content, Throwable e) {
        if (!allowE) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.e(tag, content, e);
        } else {
            Log.e(tag, content, e);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, e.getMessage());
        }
    }

    public static void i(String content) {
        if (!allowI) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.i(tag, content);
        } else {
            Log.i(tag, content);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, content);
        }
    }

    public static void i(String content, Throwable e) {
        if (!allowI) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.i(tag, content, e);
        } else {
            Log.i(tag, content, e);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, content);
        }
    }

    public static void v(String content) {
        if (!allowV) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.v(tag, content);
        } else {
            Log.v(tag, content);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, content);
        }
    }

    public static void v(String content, Throwable e) {
        if (!allowV) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.v(tag, content, e);
        } else {
            Log.v(tag, content, e);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, content);
        }
    }

    public static void w(String content) {
        if (!allowW) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.w(tag, content);
        } else {
            Log.w(tag, content);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, content);
        }
    }

    public static void w(String content, Throwable e) {
        if (!allowW) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.w(tag, content, e);
        } else {
            Log.w(tag, content, e);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, content);
        }
    }

    public static void w(Throwable e) {
        if (!allowW) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.w(tag, e);
        } else {
            Log.w(tag, e);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, e.toString());
        }
    }

    public static void wtf(String content) {
        if (!allowWtf) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.wtf(tag, content);
        } else {
            Log.wtf(tag, content);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, content);
        }
    }

    public static void wtf(String content, Throwable e) {
        if (!allowWtf) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.wtf(tag, content, e);
        } else {
            Log.wtf(tag, content, e);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, content);
        }
    }

    public static void wtf(Throwable e) {
        if (!allowWtf) {
            return;
        }

        StackTraceElement caller = getCallerStackTraceElement();
        String tag = generateTag(caller);

        if (customLogger != null) {
            customLogger.wtf(tag, e);
        } else {
            Log.wtf(tag, e);
        }
        if (isSaveLog) {
            point(LOG_PATH, tag, e.toString());
        }
    }

    private static StackTraceElement getCallerStackTraceElement() {
        return Thread.currentThread().getStackTrace()[4];
    }

    public static void point(String path, String tag, String msg) {
        if (isSDAva()) {
            long timestamp = System.currentTimeMillis();
            String time = formatter.format(new Date());
            path = path + "/logs/log-" + time + "-" + timestamp + ".log";

            File file = new File(path);
            if (!file.exists()) {
                createDipPath(path);
            }
            BufferedWriter out = null;
            try {
                out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file, true)));
                out.write(time + " " + tag + " " + msg + "\r\n");
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    if (out != null) {
                        out.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    /**
     * 根据文件路径 递归创建文件
     */
    public static void createDipPath(String file) {
        String parentFile = file.substring(0, file.lastIndexOf("/"));
        File file1 = new File(file);
        File parent = new File(parentFile);
        if (!file1.exists()) {
            parent.mkdirs();
            try {
                file1.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
       }
    }

    private static class ReusableFormatter {

        private Formatter formatter;
        private StringBuilder builder;

        public ReusableFormatter() {
            builder = new StringBuilder();
            formatter = new Formatter(builder);
        }

        public String format(String msg, Object... args) {
            formatter.format(msg, args);
            String s = builder.toString();
            builder.setLength(0);
            return s;
        }
    }

    private static final ThreadLocal<ReusableFormatter> thread_local_formatter = new ThreadLocal<ReusableFormatter>() {
        protected ReusableFormatter initialValue() {
            return new ReusableFormatter();
        }
    };

    public static String format(String msg, Object... args) {
        ReusableFormatter formatter = thread_local_formatter.get();
        return formatter.format(msg, args);
    }

    private static boolean isSDAva() {
        return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED) || Environment.getExternalStorageDirectory().exists();
    }
}
