Partow/Telegram-Final-Project
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fix

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Partow
2025-09-02 18:12:49 +03:30
parent 0ab8f38011
commit e62ffbc655
6 changed files with 271 additions and 1829 deletions
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src/main/java/org/to/telegramfinalproject/Client/ActionHandler.java
+100 -478
View File
@@ -2,18 +2,22 @@ package org.to.telegramfinalproject.Client;
import org.json.JSONArray;
import org.json.JSONObject;
import org.to.telegramfinalproject.Database.PrivateChatDatabase;
import org.to.telegramfinalproject.Database.ContactDatabase;
import org.to.telegramfinalproject.Models.ChatEntry;
import org.to.telegramfinalproject.Models.ContactEntry;
import org.to.telegramfinalproject.Models.SearchRequestModel;
import org.to.telegramfinalproject.Models.SearchResultModel;
import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.time.LocalDateTime;
import java.util.*;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
public class ActionHandler {
@@ -22,7 +26,6 @@ public class ActionHandler {
private final Scanner scanner;
public static volatile boolean forceExitChat = false;
public static ActionHandler instance;
private final DataOutputStream outBin;
//use for UI
private volatile String lastStatus = "error"; // success | error
@@ -54,12 +57,12 @@ public class ActionHandler {
}
}
public ActionHandler(PrintWriter out, BufferedReader in, DataOutputStream outBin, Scanner scanner) {
public ActionHandler(PrintWriter out, BufferedReader in, Scanner scanner) {
this.out = out;
this.in = in;
this.outBin = outBin;
this.scanner = scanner;
ActionHandler.instance = this;
}
public void login(String username , String password){
@@ -542,12 +545,6 @@ public class ActionHandler {
case "register":
Session.currentUser = response.getJSONObject("data");
//for downloaded medias
UUID accountId = UUID.fromString(Session.currentUser.getString("internal_uuid"));
Session.downloadsIndex = new DownloadsIndex(accountId);
JSONArray chatListJson = Session.currentUser.getJSONArray("chat_list");
JSONArray Archived = Session.currentUser.getJSONArray("archived_chat_list");
JSONArray Active = Session.currentUser.getJSONArray("active_chat_list");
@@ -662,6 +659,7 @@ public class ActionHandler {
Session.activeChats = activeChats;
Session.archivedChats = archivedChats;
Session.chatList = chatList;
@@ -751,7 +749,7 @@ public class ActionHandler {
if (existing != null) {
openChat(existing);
} else {
} else {
ChatEntry preview = new ChatEntry();
preview.setId(String.valueOf(uuid));
preview.setDisplayId(selected.getString("id"));
@@ -860,13 +858,13 @@ public class ActionHandler {
break;
break;
case "create_group":
case "create_channel":
if (response.has("data")) {
JSONObject chatJson = response.getJSONObject("data");
JSONObject chatJson = response.getJSONObject("data");
ChatEntry chat = new ChatEntry(
UUID.fromString(chatJson.getString("internal_id")),
@@ -881,12 +879,12 @@ public class ActionHandler {
refreshChatList();
System.out.println("✅ Created and opening chat...");
refreshChatList();
openChat(chat);
}
System.out.println("✅ Created and opening chat...");
refreshChatList();
openChat(chat);
}
break;
break;
case "get_messages":
JSONArray messages = response.getJSONObject("data").getJSONArray("messages");
@@ -1471,7 +1469,7 @@ public class ActionHandler {
JSONObject m = messages.getJSONObject(i);
String senderId = m.getString("sender_id");
String senderName = m.optString("sender_name", "Other");
String content = m.optString("content", "");
String content = m.getString("content");
String time = m.getString("send_at");
String label = senderId.equals(Session.currentUser.getString("internal_uuid")) ? "You" : senderName;
@@ -1693,7 +1691,7 @@ public class ActionHandler {
String input = scanner.nextLine().trim();
switch (input) {
case "1" -> sendMessageInteractive(chatId, "private");
case "1" -> sendMessage(chatId, "private");
case "2" -> { viewMessagesInChat(chat); }
case "3" -> { return false; }
default -> System.out.println("Invalid choice.");
@@ -1712,7 +1710,7 @@ public class ActionHandler {
String input = scanner.nextLine().trim();
switch (input) {
case "1" -> sendMessageInteractive(chat.getId(), "private");
case "1" -> sendMessage(chatId, "private");
case "2" -> toggleBlock(chat.getOtherUserId());
case "3" -> { deleteChat(chatId, false); return true; }
case "4" -> { deleteChat(chatId, true); return true; }
@@ -1808,7 +1806,7 @@ public class ActionHandler {
String input = scanner.nextLine();
switch (input) {
case "1" -> sendMessageInteractive(chat.getId(), "group");
case "1" -> sendMessage(chat.getId(), "group");
case "2" -> viewGroupMembers(chat.getId());
case "3" -> {
if (isOwner || (isAdmin && perms.optBoolean("can_add_members", false)))
@@ -1935,7 +1933,7 @@ public class ActionHandler {
switch (input) {
case "1" -> {
if (isOwner || (isAdmin && perms.optBoolean("can_post", false))) {
sendMessageInteractive(chat.getId(), "channel");
sendMessage(chat.getId(), "channel");
} else {
System.out.println("❌ You don't have permission to post.");
}
@@ -3675,135 +3673,82 @@ public class ActionHandler {
// public void sendMessage(UUID chatId, String receiverType) {
// Scanner scanner = new Scanner(System.in);
//
// System.out.print("Enter your message: ");
// String content = scanner.nextLine();
//
// System.out.print("Enter message type (TEXT / IMAGE / VIDEO / FILE): ");
// String messageType = scanner.nextLine().toUpperCase();
// Set<String> allowedTypes = Set.of("TEXT", "IMAGE", "VIDEO", "FILE");
// while (!allowedTypes.contains(messageType)) {
// System.out.print("❌ Invalid type. Try again (TEXT / IMAGE / VIDEO / FILE): ");
// messageType = scanner.nextLine().toUpperCase();
// }
//
// JSONArray attachmentsArray = new JSONArray();
// System.out.print("Do you want to attach files? (yes/no): ");
// if (scanner.nextLine().equalsIgnoreCase("yes")) {
// while (true) {
// System.out.print("File URL: ");
// String fileUrl = scanner.nextLine();
// System.out.print("File Type (IMAGE / VIDEO / FILE): ");
// String fileType = scanner.nextLine().toUpperCase();
//
// JSONObject fileJson = new JSONObject();
// fileJson.put("file_url", fileUrl);
// fileJson.put("file_type", fileType);
// attachmentsArray.put(fileJson);
//
// System.out.print("Add another file? (yes/no): ");
// if (!scanner.nextLine().equalsIgnoreCase("yes")) break;
// }
// }
//
//
//
// JSONObject messageJson = new JSONObject();
// messageJson.put("action", "send_message");
// messageJson.put("receiver_type", receiverType);
// messageJson.put("receiver_id", chatId.toString());
// messageJson.put("content", content);
// messageJson.put("message_type", messageType);
//
// if (!attachmentsArray.isEmpty()) {
// messageJson.put("attachments", attachmentsArray);
// }
//
// JSONObject response = sendWithResponse(messageJson);
// if (response != null && response.getString("status").equals("success")) {
// System.out.println("✅ Message sent! ID: " + response.getJSONObject("data").getString("message_id"));
// } else {
// System.out.println("❌ Failed to send message: " + (response != null ? response.getString("message") : "No response"));
// }
// }
public void sendMessage(UUID chatId, String receiverType) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter your message: ");
String content = scanner.nextLine();
// public void sendMessage(UUID chatId, String receiverType) {
// Scanner scanner = new Scanner(System.in);
//
// System.out.print("Enter your message (leave empty if file only): ");
// String content = scanner.nextLine();
//
// System.out.print("Enter message type (TEXT / IMAGE / AUDIO / FILE / GIF): ");
// String messageType = scanner.nextLine().toUpperCase();
// Set<String> allowedTypes = Set.of("TEXT", "IMAGE", "AUDIO", "FILE", "GIF");
// while (!allowedTypes.contains(messageType)) {
// System.out.print("❌ Invalid type. Try again (TEXT / IMAGE / AUDIO / FILE / GIF): ");
// messageType = scanner.nextLine().toUpperCase();
// }
//
// JSONArray attachmentsArray = new JSONArray();
// System.out.print("Attach files? (yes/no): ");
// if (scanner.nextLine().equalsIgnoreCase("yes")) {
// while (true) {
// System.out.println("Paste the JSON you got from /upload (or leave empty to enter minimal fields):");
// String jsonLine = scanner.nextLine().trim();
//
// JSONObject fileJson;
// if (!jsonLine.isEmpty()) {
// // انتظار خروجی کامل /upload
// fileJson = new JSONObject(jsonLine);
// // اگه خروجی /upload تو ریشه‌ست، تبدیلش کن به ساختار attachment
// fileJson = new JSONObject()
// .put("file_url", fileJson.optString("file_url", ""))
// .put("file_type", fileJson.optString("file_type", "FILE"))
// .put("file_name", fileJson.optString("file_name", ""))
// .put("file_size", fileJson.optLong("file_size", 0))
// .put("mime_type", fileJson.optString("mime_type", ""))
// .put("width", fileJson.isNull("width") ? JSONObject.NULL : fileJson.optInt("width"))
// .put("height", fileJson.isNull("height") ? JSONObject.NULL : fileJson.optInt("height"))
// .put("duration_seconds", fileJson.isNull("duration_seconds") ? JSONObject.NULL : fileJson.optInt("duration_seconds"))
// .put("thumbnail_url", fileJson.isNull("thumbnail_url") ? JSONObject.NULL : fileJson.optString("thumbnail_url", null));
// } else {
// // ورودی حداقلی
// System.out.print("File URL: ");
// String fileUrl = scanner.nextLine();
// System.out.print("File Type (IMAGE / AUDIO / FILE / GIF): ");
// String fileType = scanner.nextLine().toUpperCase();
//
// fileJson = new JSONObject();
// fileJson.put("file_url", fileUrl);
// fileJson.put("file_type", fileType);
// }
//
// attachmentsArray.put(fileJson);
//
// System.out.print("Add another file? (yes/no): ");
// if (!scanner.nextLine().equalsIgnoreCase("yes")) break;
// }
// }
//
// JSONObject messageJson = new JSONObject();
// messageJson.put("action", "send_message");
// messageJson.put("receiver_type", receiverType); // "private"/"group"/"channel"
// messageJson.put("receiver_id", chatId.toString()); // در private = chat_id
// messageJson.put("content", content);
// messageJson.put("message_type", messageType);
// if (attachmentsArray.length() > 0) {
// messageJson.put("attachments", attachmentsArray);
// }
//
// JSONObject response = sendWithResponse(messageJson);
// if (response != null && response.getString("status").equals("success")) {
// System.out.println("✅ Message sent! ID: " + response.getJSONObject("data").getString("message_id"));
// } else {
// System.out.println("❌ Failed to send message: " + (response != null ? response.optString("message","No message") : "No response"));
// }
// }
//
private void refreshContactList() {
System.out.print("Enter message type (TEXT / IMAGE / VIDEO / FILE / AUDIO): ");
String messageType = scanner.nextLine().toUpperCase();
Set<String> allowedTypes = Set.of("TEXT", "IMAGE", "VIDEO", "FILE");
while (!allowedTypes.contains(messageType)) {
System.out.print("❌ Invalid type. Try again (TEXT / IMAGE / VIDEO / FILE / AUDIO): ");
messageType = scanner.nextLine().toUpperCase();
}
JSONArray attachmentsArray = new JSONArray();
System.out.print("Do you want to attach files? (yes/no): ");
if (scanner.nextLine().equalsIgnoreCase("yes")) {
while (true) {
System.out.print("File URL: ");
String fileUrl = scanner.nextLine();
// URL validation
if (fileUrl.isEmpty()) {
System.out.print("URL can not be empty. Try again.");
continue;
}
if (fileUrl.contains(" ")) {
System.out.println("URL cannot contain spaces. Try again.");
continue;
}
if (!fileUrl.isEmpty() && !fileUrl.matches("^(http|https)://.*$")) {
System.out.println("Invalid URL format. Please enter a valid HTTP/HTTPS link.");
continue;
}
System.out.print("File Type (IMAGE / VIDEO / FILE / AUDIO): ");
String fileType = scanner.nextLine().toUpperCase();
Set<String> allowedFileTypes = Set.of("TEXT", "IMAGE", "VIDEO", "FILE");
while (!allowedFileTypes.contains(fileType)) {
System.out.print("❌ Invalid type. Try again (IMAGE / VIDEO / FILE / AUDIO): ");
fileType = scanner.nextLine().toUpperCase();
}
JSONObject fileJson = new JSONObject();
fileJson.put("file_url", fileUrl);
fileJson.put("file_type", fileType);
attachmentsArray.put(fileJson);
System.out.print("Add another file? (yes/no): ");
if (!scanner.nextLine().equalsIgnoreCase("yes")) break;
}
}
JSONObject messageJson = new JSONObject();
messageJson.put("action", "send_message");
messageJson.put("receiver_type", receiverType);
messageJson.put("receiver_id", chatId.toString());
messageJson.put("content", content);
messageJson.put("message_type", messageType);
if (!attachmentsArray.isEmpty()) {
messageJson.put("attachments", attachmentsArray);
}
JSONObject response = sendWithResponse(messageJson);
if (response != null && response.getString("status").equals("success")) {
System.out.println("✅ Message sent! ID: " + response.getJSONObject("data").getString("message_id"));
} else {
System.out.println("❌ Failed to send message: " + (response != null ? response.getString("message") : "No response"));
}
}
public void refreshContactList() {
JSONObject req = new JSONObject();
req.put("action", "get_contact_list");
req.put("user_id", Session.currentUser.getString("user_id"));
@@ -3915,18 +3860,6 @@ public class ActionHandler {
replyLabel = "↪️ Reply to " + repliedSender + ": \"" + repliedContent + "\"";
}
JSONArray atts = msg.optJSONArray("attachments");
if (atts != null && atts.length() > 0) {
System.out.println(" 📎 " + atts.length() + " attachment(s)");
for (int a = 0; a < atts.length(); a++) {
JSONObject att = atts.getJSONObject(a);
String fn = att.optString("file_name", "(unnamed)");
long sz = att.optLong("file_size", 0);
System.out.printf(" - #%d %s (%s)\n", a + 1, fn, humanSize(sz));
}
}
JSONArray reactions = msg.optJSONArray("reactions");
if (reactions != null && !reactions.isEmpty()) {
System.out.print(" 💬 Reactions: ");
@@ -3961,7 +3894,7 @@ public class ActionHandler {
}
if(input.equalsIgnoreCase("S")){
sendMessageInteractive(chat.getId(), chat.getType());
sendMessage(chat.getId(), chat.getType());
}
try {
int index = Integer.parseInt(input);
@@ -3976,10 +3909,6 @@ public class ActionHandler {
boolean isSender = senderId.toString().equals(Session.currentUser.getString("internal_uuid"));
boolean isChannel = chat.getType().equals("channel");
boolean isOwnerOrAdmin = chat.isOwner() || chat.isAdmin();
//for media
JSONArray atts = selected.optJSONArray("attachments");
boolean hasAttachments = (atts != null && atts.length() > 0);
System.out.println("\n🎯 Selected message by " + selected.getString("sender_name"));
@@ -4005,9 +3934,6 @@ public class ActionHandler {
System.out.println("5. Delete");
}
}
if (hasAttachments) {
System.out.println("D. Download attachment");
}
System.out.println("0. Back to message list");
System.out.print("➤ Select an action: ");
@@ -4040,15 +3966,6 @@ public class ActionHandler {
System.out.println("❌ You are not allowed to delete this message.");
}
case "0" -> {}
case "D", "d" -> {
if (hasAttachments) {
downloadAttachmentFlow(chat, selected);
} else {
System.out.println("🚫 No attachments to download.");
}
}
default -> System.out.println("❌ Invalid option.");
}
@@ -4059,122 +3976,6 @@ public class ActionHandler {
}
public void editMessage(UUID messageId) {
private void downloadAttachmentFlow(ChatEntry chat, JSONObject msg) {
JSONArray atts = msg.optJSONArray("attachments");
if (atts == null || atts.length() == 0) {
System.out.println("🚫 No attachments.");
return;
}
int idx = 0;
if (atts.length() > 1) {
System.out.print("Which attachment [1.." + atts.length() + "]? ");
try {
String ans = scanner.nextLine().trim();
if (!ans.isEmpty()) {
int n = Integer.parseInt(ans);
if (n >= 1 && n <= atts.length()) idx = n - 1;
}
} catch (Exception ignored) { idx = 0; }
}
JSONObject att = atts.getJSONObject(idx);
String mediaKeyStr = att.optString("media_key", "");
if (mediaKeyStr.isBlank()) {
System.out.println("❌ Attachment missing media_key.");
return;
}
UUID mediaKey = UUID.fromString(mediaKeyStr);
String rawName = att.optString("file_name", mediaKey.toString());
String fileName = sanitizeFileName(rawName);
long declaredSize = att.optLong("file_size", 0L);
// ~/Downloads/TeleSock/<Account>/<Chat>/
String accFolder = accountFolderName();
String chatFolder = chatFolderName(chat);
Path saveDir = Paths.get(System.getProperty("user.home"),
"Downloads", "TeleSock", accFolder, chatFolder);
System.out.println("👤 AccountFolder = " + accFolder);
System.out.println("💬 ChatFolder = " + chatFolder);
System.out.println("📁 SaveDir = " + saveDir);
try { Files.createDirectories(saveDir); }
catch (IOException e) {
System.out.println("❌ Cannot create folder: " + saveDir + " -> " + e.getMessage());
return;
}
DownloadsIndex di = Session.downloadsIndex;
if (di != null) {
Path existing = di.find(mediaKey);
if (existing != null) {
System.out.println("✅ Already downloaded: " + existing);
return;
}
}
Path target = uniquePath(saveDir, fileName);
TelegramClient.mediaBusy.set(true);
try {
Path saved = TelegramClient.getDownloader()
.download(mediaKey, saveDir, target.getFileName().toString());
long sizeToRecord = declaredSize > 0 ? declaredSize : Files.size(saved);
if (di != null) di.put(mediaKey, saved, sizeToRecord);
System.out.println("✅ Saved to: " + saved + " (" + humanSize(sizeToRecord) + ")");
} catch (Exception ex) {
System.out.println("❌ Download failed: " + ex.getMessage());
} finally {
TelegramClient.mediaBusy.set(false);
}
}
private static Path uniquePath(Path dir, String fileName) {
Path p = dir.resolve(fileName);
if (!Files.exists(p)) return p;
String name = fileName;
String ext = "";
int dot = fileName.lastIndexOf('.');
if (dot > 0 && dot < fileName.length()-1) {
name = fileName.substring(0, dot);
ext = fileName.substring(dot); // includes dot
}
int i = 1;
while (true) {
Path cand = dir.resolve(String.format("%s (%d)%s", name, i, ext));
if (!Files.exists(cand)) return cand;
i++;
}
}
private static String sanitizeFileName(String s) {
s = s.replace("\\", "/");
if (s.contains("/")) s = s.substring(s.lastIndexOf('/') + 1);
s = s.replaceAll("[\\\\/:*?\"<>|]", "_");
if (s.equals(".") || s.equals("..") || s.isBlank()) s = "file";
return s;
}
private static String humanSize(long b) {
if (b <= 0) return "0 B";
String[] u = {"B","KB","MB","GB","TB"};
int i = (int) Math.floor(Math.log(b) / Math.log(1024));
if (i < 0) i = 0;
if (i >= u.length) i = u.length - 1;
double v = b / Math.pow(1024, i);
return String.format("%.1f %s", v, u[i]);
}
private void editMessage(UUID messageId) {
System.out.print("📝 Enter new content: ");
String newContent = scanner.nextLine().trim();
@@ -4390,183 +4191,4 @@ public class ActionHandler {
}
public void sendMessageInteractive(UUID receiverId, String receiverType) {
Scanner sc = new Scanner(System.in);
System.out.print("Type (TEXT / IMAGE / AUDIO): ");
String type = sc.nextLine().trim().toUpperCase();
while (!Set.of("TEXT","IMAGE","AUDIO").contains(type)) {
System.out.print("❌ Invalid. Try (TEXT / IMAGE / AUDIO): ");
type = sc.nextLine().trim().toUpperCase();
}
System.out.print("Text (optional for media; empty = no caption): ");
String text = sc.nextLine();
if ("TEXT".equals(type)) {
sendTextMessage(receiverId, receiverType, text);
} else {
System.out.print("File path: ");
String path = sc.nextLine().trim();
File f = new File(path);
if (!f.isFile()) {
System.out.println("❌ File not found");
return;
}
try {
sendMediaMessage(receiverId, receiverType, type, f, text);
} catch (Exception e) {
e.printStackTrace();
System.out.println("❌ Media send failed: " + e.getMessage());
}
}
}
private void sendTextMessage(UUID receiverId, String receiverType, String content) {
JSONObject req = new JSONObject()
.put("action", "send_message")
.put("receiver_type", receiverType)
.put("receiver_id", receiverId.toString())
.put("message_type", "TEXT")
.put("content", content == null ? "" : content);
JSONObject resp = sendWithResponse(req);
if (resp != null && "success".equalsIgnoreCase(resp.optString("status"))) {
System.out.println("✅ Sent. id=" + resp.optJSONObject("data").optString("message_id",""));
} else {
System.out.println("❌ Failed: " + (resp != null ? resp.optString("message") : "no response"));
}
}
public void sendMediaMessage(UUID receiverId, String receiverType, String type /* IMAGE/AUDIO */, File file, String caption) {
if (file == null) {
System.out.println("❌ File is null");
return;
}
if (!file.exists()) {
System.out.println("❌ File not found: " + file.getAbsolutePath());
return;
}
if (file.isDirectory()) {
System.out.println("❌ Path is a directory, expected a file: " + file.getAbsolutePath());
return;
}
final UUID messageId = UUID.randomUUID();
try {
String mime = detectMime(file, type.toUpperCase());
if (mime == null) mime = type.equalsIgnoreCase("IMAGE") ? "image/*" : "audio/*";
JSONObject header = new JSONObject()
.put("message_id", messageId.toString())
.put("sender_id", TelegramClient.loggedInUserId.toString())
.put("receiver_type", receiverType) // private|group|channel
.put("receiver_id", receiverId.toString())
.put("message_type", type.toUpperCase()) // IMAGE | AUDIO
.put("file_name", file.getName())
.put("mime_type", mime)
.put("text", caption == null ? "" : caption);
byte[] headerBytes = header.toString().getBytes(java.nio.charset.StandardCharsets.UTF_8);
long contentLen = file.length();
BlockingQueue<JSONObject> q = new LinkedBlockingQueue<>(1);
TelegramClient.pendingResponses.put(messageId.toString(), q);
try {
outBin.write("MEDIA\n".getBytes(java.nio.charset.StandardCharsets.US_ASCII));
outBin.flush();
// 2) binary frame: magic + headerLen + header + contentLen + content
outBin.writeInt(0x4D444D31); // "MDM1"
outBin.writeInt(headerBytes.length); // headerLen (int)
outBin.write(headerBytes); // header
outBin.writeLong(contentLen); // contentLen (long)
try (InputStream fis = new BufferedInputStream(new FileInputStream(file))) {
byte[] buf = new byte[8192];
int n;
while ((n = fis.read(buf)) != -1) {
outBin.write(buf, 0, n);
}
}
outBin.flush();
JSONObject ack = q.poll(20, java.util.concurrent.TimeUnit.SECONDS);
if (ack == null) {
System.out.println("❌ Media ACK timeout for " + messageId);
return;
}
String status = ack.optString("status", "error");
if ("success".equalsIgnoreCase(status)) {
System.out.println("✅ Media sent. id=" + ack.optString("message_id") +
" url=" + ack.optString("file_url"));
} else {
System.out.println("❌ Media failed: " + ack.optString("message"));
}
} finally {
TelegramClient.pendingResponses.remove(messageId.toString());
}
} catch (Exception e) {
e.printStackTrace();
System.out.println("❌ sendMediaMessage error: " + e.getMessage());
}
}
private static String detectMime(File f, String typeUpper /* IMAGE or AUDIO */) {
try {
String m = java.nio.file.Files.probeContentType(f.toPath());
if (m != null) return m;
} catch (Exception ignored) {}
String name = f.getName().toLowerCase();
if (name.endsWith(".png")) return "image/png";
if (name.endsWith(".jpg") || name.endsWith(".jpeg")) return "image/jpeg";
if (name.endsWith(".gif")) return "image/gif";
if (name.endsWith(".mp3")) return "audio/mpeg";
if (name.endsWith(".wav")) return "audio/wav";
if (name.endsWith(".ogg")) return "audio/ogg";
return typeUpper.equals("IMAGE") ? "image/*" : "audio/*";
}
private static String safeName(String s) {
if (s == null) return "unknown";
s = s.replace("\\", "/");
if (s.contains("/")) s = s.substring(s.lastIndexOf('/') + 1);
s = s.replaceAll("[\\\\/:*?\"<>|]", "_").trim();
if (s.isEmpty() || s.equals(".") || s.equals("..")) s = "unknown";
return s;
}
private static String accountFolderName() {
JSONObject me = Session.currentUser;
String acc = me.optString("username",
me.optString("user_id",
me.optString("profile_name",
me.optString("internal_uuid", "me"))));
return safeName(acc);
}
private static String chatFolderName(ChatEntry chat) {
String name = chat.getName();
if (name == null || name.isBlank()) {
name = chat.getDisplayId() != null && !chat.getDisplayId().isBlank()
? chat.getDisplayId()
: String.valueOf(chat.getId());
}
return safeName(name);
}
}
}