package org.nhnnext.android.nextagram;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

import android.util.Log;

public class ProxyUP {


    private String lineEnd = "\r\n";
    private String twoHyphens = "--";
    private String boundary = "*****";

    public String uploadArticle(Article article, String filePath) {

        // 안드로이드 베이직 수업에서 자세히 다룰 내용입니다.
        // 네트워크 선행이 필요한 이유입니다.

        try {

            FileInputStream fis = new FileInputStream(filePath);

            URL url = new URL("http://10.73.44.93/~stuXX/upload.php");

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.setRequestProperty("Accept-Charset", "UTF-8");

            conn.setRequestMethod("POST");
            conn.setRequestProperty("Cache-Control", "no-cache");
            conn.setRequestProperty("Connection", "Keep-Alive");

            //응답 데이터가 많을 때에는 일정양 씩 묶어서 보내겠다는 의미
            conn.setRequestProperty("Transfer-Encoding", "chunked");

            conn.setDoOutput(true);
            conn.setDoInput(true);

            //Content는 multipart형식이고 데이터의 끝을 boundary(*****)로 표시를 하겠다.(content-length이 없으므로...)
            conn.setRequestProperty("Content-Type","multipart/form-data;boundary=" + boundary);

            // write data
            DataOutputStream dos = new DataOutputStream(conn.getOutputStream());


            dos.write( getPostData("title",article.getTitle()).getBytes("UTF-8") );
            dos.write( getPostData("writer",article.getWriter()).getBytes("UTF-8") );
            dos.write( getPostData("id",article.getId()).getBytes("UTF-8") );
            dos.write( getPostData("content",article.getContent()).getBytes("UTF-8") );
            dos.write( getPostData("writeDate",article.getWriteDate()).getBytes("UTF-8") );
            dos.write( getPostData("imgName",article.getImgName()).getBytes("UTF-8") );


            dos.writeBytes(twoHyphens + boundary + lineEnd);
            dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + article.getImgName() + "\"" + lineEnd);
            dos.writeBytes(lineEnd);



            int bytesAvailable = fis.available();
            int maxBufferSize = 1024;

            // 버퍼사이즈 조정
            int bufferSize = Math.min(bytesAvailable, maxBufferSize);

            byte[] buffer = new byte[bufferSize];
            int bytesRead = fis.read(buffer, 0, bufferSize);

            // read image
            while (bytesRead > 0) {
                dos.write(buffer, 0, bufferSize);
                bytesAvailable = fis.available();
                bufferSize = Math.min(bytesAvailable, maxBufferSize);
                bytesRead = fis.read(buffer, 0, bufferSize);
            }

            dos.writeBytes(lineEnd);
            dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

            // close streams
            Log.i("Test", "File is written");

            fis.close();
            dos.flush();
            dos.close();

            int status = conn.getResponseCode();
            Log.i("test", "statusUP:" + status);

            switch (status) {
            case 200:
            case 201:
                BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                StringBuilder sb = new StringBuilder();
                String line;
                while ((line = br.readLine()) != null) {
                    sb.append(line + "\n");
                }
                br.close();
                return sb.toString();
            }

        } catch (Exception e) {
            e.printStackTrace();
            Log.i("test", "UPLOAD ERROR:" + e);
        }

        return null;
    }

    // post방식에 맞게 데이터 형식을 추가
    private String getPostData(String key, String value) {
        String result = twoHyphens + boundary + lineEnd;
        result += "Content-Disposition: form-data; name=\"" + key + "\"" + lineEnd;
        result += lineEnd;

        result += value;

        result += lineEnd;

        return result;
    }

}