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Delete group by owner, transfer ownership, leave group

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This commit is contained in:
Partow
2025-07-01 17:18:29 +03:30
parent 0fbccc2c4c
commit 67f48cd943
4 changed files with 216 additions and 8 deletions
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src/main/java/org/to/telegramfinalproject/Client/ActionHandler.java
+70 -5
View File
@@ -713,8 +713,11 @@ public class ActionHandler {
}
if (isOwner) {
System.out.println("8. Delete Group");
}
System.out.println("9. Leave Group (Transfer ownership required)");
} else {
System.out.println("9. Leave Group");
}
System.out.println("0. Back to Chat List");
String input = scanner.nextLine();
@@ -747,9 +750,16 @@ public class ActionHandler {
return false;
}
case "9" -> {
if (isOwner) {
transferOwnershipAndLeave(chat.getId());
refreshChatList();
} else {
leaveChat(chat.getId(), "group");
refreshChatList();
}
return false;
}
case "0" -> {
return false;
}
@@ -811,6 +821,57 @@ public class ActionHandler {
private void transferOwnershipAndLeave(UUID groupId) {
JSONObject req = new JSONObject();
req.put("action", "view_group_admins");
req.put("group_id", groupId.toString());
JSONObject res = sendWithResponse(req);
if (res == null || !res.getString("status").equals("success")) {
System.out.println("❌ Failed to fetch admins.");
return;
}
JSONArray admins = res.getJSONObject("data").getJSONArray("admins");
if (admins.length() == 0) {
System.out.println("⚠️ No other admins available. You cannot leave without promoting someone to owner.");
return;
}
System.out.println("--- Admins List ---");
for (int i = 0; i < admins.length(); i++) {
JSONObject admin = admins.getJSONObject(i);
System.out.printf("%d. %s (%s)\n", i + 1, admin.getString("profile_name"), admin.getString("user_id"));
}
System.out.print("Select a new owner by number: ");
int choice = Integer.parseInt(scanner.nextLine()) - 1;
if (choice < 0 || choice >= admins.length()) {
System.out.println("Invalid selection.");
return;
}
JSONObject selected = admins.getJSONObject(choice);
String newOwnerId = selected.getString("user_id");
JSONObject promoteReq = new JSONObject();
promoteReq.put("action", "transfer_group_ownership");
promoteReq.put("group_id", groupId.toString());
promoteReq.put("new_owner_user_id", newOwnerId);
JSONObject promoteRes = sendWithResponse(promoteReq);
if (promoteRes == null || !promoteRes.getString("status").equals("success")) {
System.out.println("❌ Failed to transfer ownership.");
return;
}
System.out.println("✅ Ownership transferred successfully.");
leaveChat(groupId, "group");
}
private void removeMemberFromGroup(UUID groupId) {
JSONObject req = new JSONObject();
req.put("action", "view_group_members");
@@ -1046,13 +1107,17 @@ public class ActionHandler {
JSONObject res = sendWithResponse(req);
if (res == null) return;
if (res.getBoolean("success")) {
String status = res.getString("status");
String message = res.getString("message");
if (status.equals("success")) {
System.out.println("✅ You left the chat.");
} else {
System.out.println("❌ " + res.getString("message"));
System.out.println("❌ " + message);
}
}
private void sendMessageTo(UUID id, String type) {
System.out.print("Enter message: ");
String text = scanner.nextLine().trim();
@@ -1120,8 +1185,8 @@ public class ActionHandler {
String currentId = data.getString("id");
String currentName = data.getString("name");
String currentDesc = data.optString("description", "None");
String currentImage = data.optString("image_url", "None");
String currentDesc = data.optString("description", null);
String currentImage = data.optString("image_url", null);
System.out.println("\n--- Current Group Info ---");
System.out.println("1. Group ID: " + currentId);
src/main/java/org/to/telegramfinalproject/Database/ChannelDatabase.java
+17
View File
@@ -435,5 +435,22 @@ public class ChannelDatabase {
}
public static boolean removeSubscriberFromChannel(UUID channelId, UUID userId) {
String sql = "DELETE FROM channel_subscribers WHERE channel_id = ? AND user_id = ?";
try (Connection conn =ConnectionDb.connect();
PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setObject(1, channelId);
stmt.setObject(2, userId);
int affectedRows = stmt.executeUpdate();
return affectedRows > 0;
} catch (SQLException e) {
System.err.println("Error removing subscriber from channel: " + e.getMessage());
return false;
}
}
}
src/main/java/org/to/telegramfinalproject/Database/GroupDatabase.java
+58 -2
View File
@@ -404,22 +404,32 @@ public class GroupDatabase {
public static List<JSONObject> getGroupAdminsAndOwner(UUID groupId) {
String sql = "SELECT user_id, role, permissions FROM group_members WHERE group_id = ? AND role IN ('owner', 'admin')";
List<JSONObject> admins = new ArrayList<>();
String sql = "SELECT gm.user_id, gm.role, gm.permissions, u.profile_name " +
"FROM group_members gm " +
"JOIN users u ON gm.user_id = u.internal_uuid " +
"WHERE gm.group_id = ? AND gm.role IN ('owner', 'admin')";
try (Connection conn = ConnectionDb.connect();
PreparedStatement stmt = conn.prepareStatement(sql)) {
stmt.setObject(1, groupId);
ResultSet rs = stmt.executeQuery();
while (rs.next()) {
JSONObject obj = new JSONObject();
obj.put("user_id", rs.getObject("user_id").toString());
obj.put("role", rs.getString("role"));
obj.put("permissions", new JSONObject(rs.getString("permissions")));
obj.put("profile_name", rs.getString("profile_name"));
admins.add(obj);
}
} catch (Exception e) {
} catch (SQLException e) {
e.printStackTrace();
}
return admins;
}
@@ -544,4 +554,50 @@ public class GroupDatabase {
}
public static boolean transferOwnership(UUID groupId, UUID newOwnerId) {
String demoteOldOwner = "UPDATE group_members SET role = 'admin' WHERE group_id = ? AND role = 'owner'";
String promoteNewOwner = "UPDATE group_members SET role = 'owner' WHERE group_id = ? AND user_id = ?";
try (Connection conn = ConnectionDb.connect()) {
conn.setAutoCommit(false);
try (PreparedStatement demoteStmt = conn.prepareStatement(demoteOldOwner);
PreparedStatement promoteStmt = conn.prepareStatement(promoteNewOwner)) {
demoteStmt.setObject(1, groupId);
demoteStmt.executeUpdate();
promoteStmt.setObject(1, groupId);
promoteStmt.setObject(2, newOwnerId);
promoteStmt.executeUpdate();
conn.commit();
return true;
} catch (SQLException e) {
conn.rollback();
e.printStackTrace();
}
} catch (SQLException e) {
e.printStackTrace();
}
return false;
}
public static boolean deleteGroup(UUID groupId) {
try (Connection conn = ConnectionDb.connect();
PreparedStatement stmt = conn.prepareStatement("DELETE FROM groups WHERE internal_uuid = ?")) {
stmt.setObject(1, groupId);
int affectedRows = stmt.executeUpdate();
return affectedRows > 0;
} catch (SQLException e) {
e.printStackTrace();
return false;
}
}
}
src/main/java/org/to/telegramfinalproject/Server/ClientHandler.java
+70
View File
@@ -912,6 +912,36 @@ public class ClientHandler implements Runnable {
case "transfer_group_ownership": {
UUID groupId = UUID.fromString(requestJson.getString("group_id"));
UUID newOwnerUserId = UUID.fromString(requestJson.getString("new_owner_user_id"));
User newOwner = userDatabase.findByInternalUUID(newOwnerUserId);
if (newOwner == null) {
response = new ResponseModel("error", "New owner not found.");
break;
}
if (!GroupDatabase.isOwner(groupId, currentUser.getInternal_uuid())) {
response = new ResponseModel("error", "Only current owner can transfer ownership.");
break;
}
if (!GroupDatabase.isAdmin(groupId, newOwner.getInternal_uuid())) {
response = new ResponseModel("error", "Selected user is not an admin.");
break;
}
boolean success = GroupDatabase.transferOwnership(groupId, newOwner.getInternal_uuid());
response = success
? new ResponseModel("success", "Ownership transferred.")
: new ResponseModel("error", "Failed to transfer ownership.");
break;
}
case "view_group_members" : {
UUID groupId = UUID.fromString(requestJson.getString("group_id"));
@@ -948,7 +978,47 @@ public class ClientHandler implements Runnable {
}
case "leave_chat": {
String chatType = requestJson.getString("chat_type");
UUID chatId = UUID.fromString(requestJson.getString("chat_id"));
userId = UUID.fromString(requestJson.getString("user_id"));
boolean success = false;
switch (chatType) {
case "group" -> success = GroupDatabase.removeMemberFromGroup(chatId, userId);
case "channel" -> success = ChannelDatabase.removeSubscriberFromChannel(chatId, userId);
default -> {
response = new ResponseModel("error", "Unsupported chat type.");
break;
}
}
if (response == null) {
response = success
? new ResponseModel("success", "Left the " + chatType + " successfully.")
: new ResponseModel("error", "Failed to leave the " + chatType + ".");
}
break;
}
case "delete_group": {
UUID groupId = UUID.fromString(requestJson.getString("group_id"));
if (!GroupDatabase.isOwner(groupId, currentUser.getInternal_uuid())) {
response = new ResponseModel("error", "Only the group owner can delete the group.");
break;
}
boolean success = GroupDatabase.deleteGroup(groupId);
response = success
? new ResponseModel("success", "Group deleted successfully.")
: new ResponseModel("error", "Failed to delete group.");
break;
}