work on send media

2025-08-12 14:09:57 +03:30
parent 50bcb34b16
commit ce4434650d
4 changed files with 423 additions and 139 deletions
@@ -0,0 +1,82 @@
+package org.to.telegramfinalproject.Client;
+
+import org.json.JSONObject;
+import java.io.*;
+import java.net.Socket;
+import java.nio.file.Files;
+import java.util.UUID;
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+
+
+
+public class MediaSender {
+
+    public static void sendImageOrAudio(Socket socket,
+                                        UUID senderId,
+                                        String receiverType,
+                                        UUID receiverId,
+                                        File file,
+                                        String messageType,   // "IMAGE" یا "AUDIO"
+                                        String captionOrEmpty) throws Exception {
+
+        if (!"IMAGE".equals(messageType) && !"AUDIO".equals(messageType))
+            throw new IllegalArgumentException("Only IMAGE/AUDIO");
+
+        // 1) اعلام سوییچ به باینری
+        PrintWriter textOut = new PrintWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF-8"), true);
+        textOut.println("MEDIA");
+
+        // 2) متادیتا
+        String mime = Files.probeContentType(file.toPath());
+        if (mime == null) mime = "application/octet-stream";
+
+        Integer width = null, height = null;
+        if ("IMAGE".equals(messageType)) {
+            try {
+                BufferedImage img = ImageIO.read(file);
+                if (img != null) { width = img.getWidth(); height = img.getHeight(); }
+            } catch (Exception ignore) {}
+        }
+
+        UUID messageId = UUID.randomUUID();
+        JSONObject header = new JSONObject()
+                .put("message_id", messageId.toString())
+                .put("sender_id", senderId.toString())
+                .put("receiver_type", receiverType)
+                .put("receiver_id", receiverId.toString())
+                .put("message_type", messageType)
+                .put("file_name", file.getName())
+                .put("mime_type", mime)
+                .put("file_size", file.length())
+                .put("text", captionOrEmpty == null ? "" : captionOrEmpty);
+
+        if (width != null)  header.put("width", width);
+        if (height != null) header.put("height", height);
+
+        byte[] headerBytes = header.toString().getBytes("UTF-8");
+
+        // 3) ارسال فریم باینری
+        DataOutputStream dos = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));
+        dos.writeInt(0x4D444D31);               // MAGIC
+        dos.writeInt(headerBytes.length);       // headerLen
+        dos.write(headerBytes);                 // header
+        dos.writeLong(file.length());           // contentLen
+
+        try (InputStream fis = new BufferedInputStream(new FileInputStream(file))) {
+            byte[] buf = new byte[8192];
+            int n;
+            while ((n = fis.read(buf)) != -1) {
+                dos.write(buf, 0, n);
+            }
+        }
+        dos.flush();
+
+        // (اختیاری) Ack متنی
+        BufferedReader textIn = new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF-8"));
+        String ack = textIn.readLine();
+        if (!"OK".equalsIgnoreCase(ack)) {
+            throw new IOException("Server did not ACK: " + ack);
+        }
+    }
+}