/*
 * This is the source code of Telegram for Android v. 1.7.x.
 * It is licensed under GNU GPL v. 2 or later.
 * You should have received a copy of the license in this archive (see LICENSE).
 *
 * Copyright Nikolai Kudashov, 2013-2014.
 */

package org.telegram.ui;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.inputmethod.EditorInfo;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import org.telegram.android.AndroidUtilities;
import org.telegram.android.LocaleController;
import org.telegram.android.MessagesController;
import org.telegram.android.MessagesStorage;
import org.telegram.android.NotificationCenter;
import org.telegram.messenger.ConnectionsManager;
import org.telegram.messenger.FileLog;
import org.telegram.messenger.R;
import org.telegram.messenger.RPCRequest;
import org.telegram.messenger.TLObject;
import org.telegram.messenger.TLRPC;
import org.telegram.messenger.UserConfig;
import org.telegram.ui.Views.ActionBar.BaseFragment;

import java.util.ArrayList;

public class SettingsChangeUsernameActivity extends BaseFragment {
    private EditText firstNameField;
    private View headerLabelView;
    private View doneButton;

    @Override
    public View createView(LayoutInflater inflater, ViewGroup container) {
        if (fragmentView == null) {
            actionBarLayer.setCustomView(R.layout.settings_do_action_layout);
            Button cancelButton = (Button)actionBarLayer.findViewById(R.id.cancel_button);
            cancelButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    finishFragment();
                }
            });
            doneButton = actionBarLayer.findViewById(R.id.done_button);
            doneButton.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    if (firstNameField.getText().length() != 0) {
                        saveName();
                    }
                }
            });

            cancelButton.setText(LocaleController.getString("Cancel", R.string.Cancel).toUpperCase());
            TextView textView = (TextView)doneButton.findViewById(R.id.done_button_text);
            textView.setText(LocaleController.getString("Done", R.string.Done).toUpperCase());

            fragmentView = inflater.inflate(R.layout.chat_profile_change_name_layout, container, false);

            TLRPC.User user = MessagesController.getInstance().getUser(UserConfig.getClientUserId());
            if (user == null) {
                user = UserConfig.getCurrentUser();
            }

            firstNameField = (EditText)fragmentView.findViewById(R.id.first_name_field);
            firstNameField.setOnEditorActionListener(new TextView.OnEditorActionListener() {
                @Override
                public boolean onEditorAction(TextView textView, int i, KeyEvent keyEvent) {
                    if (i == EditorInfo.IME_ACTION_DONE) {
                        doneButton.performClick();
                        return true;
                    }
                    return false;
                }
            });

            if (user != null && user.username != null && user.username.length() > 0) {
                firstNameField.setText(user.username);
                firstNameField.setSelection(firstNameField.length());
            }

            TextView headerLabel = (TextView)fragmentView.findViewById(R.id.settings_section_text);
            headerLabel.setText(LocaleController.getString("Username", R.string.Username).toUpperCase());
        } else {
            ViewGroup parent = (ViewGroup)fragmentView.getParent();
            if (parent != null) {
                parent.removeView(fragmentView);
            }
        }
        return fragmentView;
    }

    @Override
    public void onResume() {
        super.onResume();
        SharedPreferences preferences = ApplicationLoader.applicationContext.getSharedPreferences("mainconfig", Activity.MODE_PRIVATE);
        boolean animations = preferences.getBoolean("view_animations", true);
        if (!animations) {
            firstNameField.requestFocus();
            AndroidUtilities.showKeyboard(firstNameField);
        }
    }

    private void showErrorAlert(String error) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getParentActivity());
        builder.setTitle(LocaleController.getString("AppName", R.string.AppName));
        if (error.equals("USERNAME_INVALID")) {
            builder.setMessage(LocaleController.getString("UsernameInvalid", R.string.UsernameInvalid));
        } else if (error.equals("USERNAME_OCCUPIED")) {
            builder.setMessage(LocaleController.getString("UsernameInUse", R.string.UsernameInUse));
        } else {
            builder.setMessage(error);
        }
        builder.setPositiveButton(LocaleController.getString("OK", R.string.OK), null);
        showAlertDialog(builder);
    }

    private void saveName() {
        TLRPC.User user = UserConfig.getCurrentUser();
        if (getParentActivity() == null || user == null) {
            return;
        }
        String currentName = user.username;
        if (currentName == null) {
            currentName = "";
        }
        String newName = firstNameField.getText().toString();
        if (currentName.equals(newName)) {
            finishFragment();
            return;
        }
        if (newName.length() > 32 || newName.length() > 0 && newName.length() < 5) {
            showErrorAlert("USERNAME_INVALID");
            return;
        }

        final ProgressDialog progressDialog = new ProgressDialog(getParentActivity());
        progressDialog.setMessage(LocaleController.getString("Loading", R.string.Loading));
        progressDialog.setCanceledOnTouchOutside(false);
        progressDialog.setCancelable(false);

        TLRPC.TL_account_updateUsername req = new TLRPC.TL_account_updateUsername();
        req.username = newName;

        NotificationCenter.getInstance().postNotificationName(NotificationCenter.updateInterfaces, MessagesController.UPDATE_MASK_NAME);
        final long reqId = ConnectionsManager.getInstance().performRpc(req, new RPCRequest.RPCRequestDelegate() {
            @Override
            public void run(TLObject response, final TLRPC.TL_error error) {
                if (error == null) {
                    final TLRPC.User user = (TLRPC.User)response;
                    AndroidUtilities.RunOnUIThread(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                progressDialog.dismiss();
                            } catch (Exception e) {
                                FileLog.e("tmessages", e);
                            }
                            ArrayList<TLRPC.User> users = new ArrayList<TLRPC.User>();
                            users.add(user);
                            MessagesController.getInstance().putUsers(users, false);
                            MessagesStorage.getInstance().putUsersAndChats(users, null, false, true);
                            UserConfig.saveConfig(true);
                            finishFragment();
                        }
                    });
                } else {
                    AndroidUtilities.RunOnUIThread(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                progressDialog.dismiss();
                            } catch (Exception e) {
                                FileLog.e("tmessages", e);
                            }
                            showErrorAlert(error.text);
                        }
                    });
                }
            }
        }, true, RPCRequest.RPCRequestClassGeneric | RPCRequest.RPCRequestClassFailOnServerErrors);
        ConnectionsManager.getInstance().bindRequestToGuid(reqId, classGuid);

        progressDialog.setButton(DialogInterface.BUTTON_NEGATIVE, LocaleController.getString("Cancel", R.string.Cancel), new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                ConnectionsManager.getInstance().cancelRpc(reqId, true);
                try {
                    dialog.dismiss();
                } catch (Exception e) {
                    FileLog.e("tmessages", e);
                }
            }
        });
        progressDialog.show();
    }

    @Override
    public void onOpenAnimationEnd() {
        firstNameField.requestFocus();
        AndroidUtilities.showKeyboard(firstNameField);
    }
}