package com.lansosdk.videoeditor;

import android.content.Context;
import android.util.Log;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;

public class CopyFileFromAssets {
	/**
	 * 拷贝资源文件夹中的文件到默认地址. 如果文件已经存在,则直接返回文件路径
	 *
	 * @param mContext
	 * @param assetsName
	 * @return 返回 拷贝文件的目标路径
	 */
	public static String copyAssets(Context mContext, String assetsName) {
		String filePath = LanSongFileUtil.DEFAULT_DIR + "/" + assetsName;

		File dir = new File(LanSongFileUtil.DEFAULT_DIR);
		// 如果目录不中存在，创建这个目录
		if (!dir.exists())
			dir.mkdirs();
		try {
			if (!(new File(filePath)).exists()) { // 如果不存在.
				InputStream is = mContext.getResources().getAssets()
						.open(assetsName);
				FileOutputStream fos = new FileOutputStream(filePath);
				byte[] buffer = new byte[7168];
				int count = 0;
				while ((count = is.read(buffer)) > 0) {
					fos.write(buffer, 0, count);
				}
				fos.close();
				is.close();
			} else {
				Log.i("copyFile",
						"CopyFileFromAssets.copyAssets() is work. file existe!");
			}
			return filePath;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}

	/**
	 * 拷贝一般的文件,从一个路径上,拷贝到另一个路径中
	 * @param srcFile
	 * @param dstPath
	 */
	public static void copyFile(String srcFile, String dstPath) {

		// 如果目录不中存在，创建这个目录
		try {
			if (!(new File(dstPath)).exists()) { // 如果不存在.
				InputStream is = new FileInputStream(srcFile);
				FileOutputStream fos = new FileOutputStream(dstPath);
				byte[] buffer = new byte[7168];
				int count = 0;
				while ((count = is.read(buffer)) > 0) {
					fos.write(buffer, 0, count);
				}
				fos.close();
				is.close();
			} else {
				Log.i("copyFile",
						"CopyFileFromAssets.copyFile() is not work. file existe!");
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 拷贝资源文件到路径中;
	 * @param mContext
	 * @param resId
	 * @return
	 */
	public static String copyResId(Context mContext, int resId) {
		String str2 = mContext.getResources().getString(resId);
		String str3 = str2.substring(str2.lastIndexOf("/") + 1);

		String filePath = LanSongFileUtil.DEFAULT_DIR + "/" + str3;

		try {
			if (!(new File(filePath)).exists()) {
				InputStream is = mContext.getResources().openRawResource(resId);
				FileOutputStream fos = new FileOutputStream(filePath);
				byte[] buffer = new byte[7168];
				int count = 0;
				while ((count = is.read(buffer)) > 0) {
					fos.write(buffer, 0, count);
				}
				fos.close();
				is.close();
			}
			return filePath;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return null;
	}
}