package eu.siacs.conversations.ui;

import java.util.ArrayList;
import java.util.List;

import eu.siacs.conversations.R;
import eu.siacs.conversations.crypto.PgpEngine;
import eu.siacs.conversations.crypto.PgpEngine.UserInputRequiredException;
import eu.siacs.conversations.entities.Account;
import eu.siacs.conversations.ui.EditAccount.EditAccountListener;
import eu.siacs.conversations.xmpp.OnTLSExceptionReceived;
import eu.siacs.conversations.xmpp.XmppConnection;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ClipData.Item;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.IntentSender.SendIntentException;
import android.os.Bundle;
import android.os.SystemClock;
import android.util.Log;
import android.view.ActionMode;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class ManageAccountActivity extends XmppActivity {

	public static final int REQUEST_ANNOUNCE_PGP = 0x73731;
	
	protected boolean isActionMode = false;
	protected ActionMode actionMode;
	protected Account selectedAccountForActionMode = null;
	protected ManageAccountActivity activity = this;
	
	protected List<Account> accountList = new ArrayList<Account>();
	protected ListView accountListView;
	protected ArrayAdapter<Account> accountListViewAdapter;
	protected OnAccountListChangedListener accountChanged = new OnAccountListChangedListener() {

		@Override
		public void onAccountListChangedListener() {
			accountList.clear();
			accountList.addAll(xmppConnectionService.getAccounts());
			runOnUiThread(new Runnable() {

				@Override
				public void run() {
					accountListViewAdapter.notifyDataSetChanged();
				}
			});
		}
	};
	
	protected OnTLSExceptionReceived tlsExceptionReceived = new OnTLSExceptionReceived() {
		
		@Override
		public void onTLSExceptionReceived(final String fingerprint, final Account account) {
			activity.runOnUiThread(new Runnable() {
				
				@Override
				public void run() {
					AlertDialog.Builder builder = new AlertDialog.Builder(activity);
					builder.setTitle("Untrusted Certificate");
					builder.setIconAttribute(android.R.attr.alertDialogIcon);
					View view = (View) getLayoutInflater().inflate(R.layout.cert_warning, null);
					TextView sha = (TextView) view.findViewById(R.id.sha);
					TextView hint = (TextView) view.findViewById(R.id.hint);
					StringBuilder humanReadableSha = new StringBuilder();
					humanReadableSha.append(fingerprint);
					for(int i = 2; i < 59; i += 3) {
						if ((i==14)||(i==29)||(i==44)) {
							humanReadableSha.insert(i, "\n");
						} else {
							humanReadableSha.insert(i, ":");
						}
						
					}
					hint.setText(getString(R.string.untrusted_cert_hint,account.getServer()));
					sha.setText(humanReadableSha.toString());
					builder.setView(view);
					builder.setNegativeButton("Don't connect", null);
					builder.setPositiveButton("Trust certificate", new OnClickListener() {
						
						@Override
						public void onClick(DialogInterface dialog, int which) {
							account.setSSLCertFingerprint(fingerprint);
							activity.xmppConnectionService.updateAccount(account);
						}
					});
					builder.create().show();
				}
			});
			
		}
	};

	@Override
	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.manage_accounts);

		accountListView = (ListView) findViewById(R.id.account_list);
		accountListViewAdapter = new ArrayAdapter<Account>(
				getApplicationContext(), R.layout.account_row, this.accountList) {
			@Override
			public View getView(int position, View view, ViewGroup parent) {
				Account account = getItem(position);
				if (view == null) {
					LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
					view = (View) inflater.inflate(R.layout.account_row, null);
				}
				((TextView) view.findViewById(R.id.account_jid))
						.setText(account.getJid());
				TextView statusView = (TextView) view
						.findViewById(R.id.account_status);
				switch (account.getStatus()) {
				case Account.STATUS_DISABLED:
					statusView.setText("temporarily disabled");
					statusView.setTextColor(0xFF1da9da);
					break;
				case Account.STATUS_ONLINE:
					statusView.setText("online");
					statusView.setTextColor(0xFF83b600);
					break;
				case Account.STATUS_CONNECTING:
					statusView.setText("connecting\u2026");
					statusView.setTextColor(0xFF1da9da);
					break;
				case Account.STATUS_OFFLINE:
					statusView.setText("offline");
					statusView.setTextColor(0xFFe92727);
					break;
				case Account.STATUS_UNAUTHORIZED:
					statusView.setText("unauthorized");
					statusView.setTextColor(0xFFe92727);
					break;
				case Account.STATUS_SERVER_NOT_FOUND:
					statusView.setText("server not found");
					statusView.setTextColor(0xFFe92727);
					break;
				case Account.STATUS_NO_INTERNET:
					statusView.setText("no internet");
					statusView.setTextColor(0xFFe92727);
					break;
				case Account.STATUS_SERVER_REQUIRES_TLS:
					statusView.setText("server requires TLS");
					statusView.setTextColor(0xFFe92727);
					break;
				case Account.STATUS_TLS_ERROR:
					statusView.setText("untrusted cerficate");
					statusView.setTextColor(0xFFe92727);
					break;
				case Account.STATUS_REGISTRATION_FAILED:
					statusView.setText("registration failed");
					statusView.setTextColor(0xFFe92727);
					break;
				case Account.STATUS_REGISTRATION_CONFLICT:
					statusView.setText("username already in use");
					statusView.setTextColor(0xFFe92727);
					break;
				case  Account.STATUS_REGISTRATION_SUCCESSFULL:
					statusView.setText("registration completed");
					statusView.setTextColor(0xFF83b600);
					break;
				case Account.STATUS_REGISTRATION_NOT_SUPPORTED:
					statusView.setText("server does not support registration");
					statusView.setTextColor(0xFFe92727);
					break;
				default:
					statusView.setText("");
					break;
				}

				return view;
			}
		};
		final XmppActivity activity = this;
		accountListView.setAdapter(this.accountListViewAdapter);
		accountListView.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> arg0, View view,
					int position, long arg3) {
				if (!isActionMode) {
					Account account = accountList.get(position);
					if ((account.getStatus() == Account.STATUS_OFFLINE)||(account.getStatus() == Account.STATUS_TLS_ERROR)) {
						activity.xmppConnectionService.reconnectAccount(accountList.get(position),true);
					} else if (account.getStatus() == Account.STATUS_ONLINE) {
						activity.startActivity(new Intent(activity.getApplicationContext(),NewConversationActivity.class));
					} else if (account.isOptionSet(Account.OPTION_REGISTER)) {
						editAccount(account);
					}
				} else {
					selectedAccountForActionMode = accountList.get(position);
					actionMode.invalidate();
				}
			}
		});
		accountListView.setOnItemLongClickListener(new OnItemLongClickListener() {

			@Override
			public boolean onItemLongClick(AdapterView<?> arg0, View view,
					int position, long arg3) {
				if (!isActionMode) {
					accountListView.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
					accountListView.setItemChecked(position,true);
					selectedAccountForActionMode = accountList.get(position);
					actionMode = activity.startActionMode((new ActionMode.Callback() {
						
						@Override
						public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
							if (selectedAccountForActionMode.isOptionSet(Account.OPTION_DISABLED)) {
					        	menu.findItem(R.id.mgmt_account_enable).setVisible(true);
					        	menu.findItem(R.id.mgmt_account_disable).setVisible(false);
					        } else {
					        	menu.findItem(R.id.mgmt_account_disable).setVisible(true);
					        	menu.findItem(R.id.mgmt_account_enable).setVisible(false);
					        }
							return true;
						}
						
						@Override
						public void onDestroyActionMode(ActionMode mode) {
							// TODO Auto-generated method stub
							
						}
						
						@Override
						public boolean onCreateActionMode(ActionMode mode, Menu menu) {
							MenuInflater inflater = mode.getMenuInflater();
					        inflater.inflate(R.menu.manageaccounts_context, menu);
							return true;
						}
						
						@Override
						public boolean onActionItemClicked(final ActionMode mode, MenuItem item) {
							if (item.getItemId()==R.id.mgmt_account_edit) {
								editAccount(selectedAccountForActionMode);
							} else if (item.getItemId()==R.id.mgmt_account_disable) {
								selectedAccountForActionMode.setOption(Account.OPTION_DISABLED, true);
								xmppConnectionService.updateAccount(selectedAccountForActionMode);
								mode.finish();
							} else if (item.getItemId()==R.id.mgmt_account_enable) {
								selectedAccountForActionMode.setOption(Account.OPTION_DISABLED, false);
								xmppConnectionService.updateAccount(selectedAccountForActionMode);
								mode.finish();
							} else if (item.getItemId()==R.id.mgmt_account_delete) {
								AlertDialog.Builder builder = new AlertDialog.Builder(activity);
								builder.setTitle("Are you sure?");
								builder.setIconAttribute(android.R.attr.alertDialogIcon);
								builder.setMessage("If you delete your account your entire conversation history will be lost");
								builder.setPositiveButton("Delete", new OnClickListener() {
									
									@Override
									public void onClick(DialogInterface dialog, int which) {
										xmppConnectionService.deleteAccount(selectedAccountForActionMode);
										selectedAccountForActionMode = null;
										mode.finish();
									}
								});
								builder.setNegativeButton("Cancel",null);
								builder.create().show();
							} else if (item.getItemId()==R.id.mgmt_account_announce_pgp) {
								if (activity.hasPgp()) {
									mode.finish();
									try {
										xmppConnectionService.generatePgpAnnouncement(selectedAccountForActionMode);
									} catch (PgpEngine.UserInputRequiredException e) {
										try {
											startIntentSenderForResult(e.getPendingIntent().getIntentSender(), REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
										} catch (SendIntentException e1) {
											Log.d("gultsch","sending intent failed");
										}
									}
								}
							} else if (item.getItemId() == R.id.mgmt_otr_key) {
								AlertDialog.Builder builder = new AlertDialog.Builder(activity);
								builder.setTitle("OTR Fingerprint");
								String fingerprintTxt = selectedAccountForActionMode.getOtrFingerprint(getApplicationContext());
								View view = (View) getLayoutInflater().inflate(R.layout.otr_fingerprint, null);
								if (fingerprintTxt!=null) {
									TextView fingerprint = (TextView) view.findViewById(R.id.otr_fingerprint);
									fingerprint.setText(fingerprintTxt);
								}
								builder.setView(view);
								builder.setPositiveButton("Done", null);
								builder.create().show();
							} else if (item.getItemId() == R.id.mgmt_account_info) {
								AlertDialog.Builder builder = new AlertDialog.Builder(activity);
								builder.setTitle(getString(R.string.account_info));
								if (selectedAccountForActionMode.getStatus() == Account.STATUS_ONLINE) {
									XmppConnection xmpp = selectedAccountForActionMode.getXmppConnection();
									long connectionAge = (SystemClock.elapsedRealtime() - xmpp.lastConnect) / 60000;
									long sessionAge = (SystemClock.elapsedRealtime() - xmpp.lastSessionStarted) / 60000;
									long connectionAgeHours = connectionAge / 60;
									long sessionAgeHours = sessionAge / 60;
									View view = (View) getLayoutInflater().inflate(R.layout.server_info, null);
									TextView connection = (TextView) view.findViewById(R.id.connection);
									TextView session = (TextView) view.findViewById(R.id.session);
									TextView pcks_sent = (TextView) view.findViewById(R.id.pcks_sent);
									TextView pcks_received = (TextView) view.findViewById(R.id.pcks_received);
									TextView carbon = (TextView) view.findViewById(R.id.carbon);
									TextView stream = (TextView) view.findViewById(R.id.stream);
									TextView roster = (TextView) view.findViewById(R.id.roster);
									pcks_received.setText(""+xmpp.getReceivedStanzas());
									pcks_sent.setText(""+xmpp.getSentStanzas());
									if (connectionAgeHours >= 2) {
										connection.setText(connectionAgeHours+" hours");
									} else {
										connection.setText(connectionAge+" mins");
									}
									if (xmpp.hasFeatureStreamManagment()) {
										if (sessionAgeHours >= 2) {
											session.setText(sessionAgeHours+" hours");
										} else {
											session.setText(sessionAge+" mins");
										}
										stream.setText("Yes");
									} else {
										stream.setText("No");
										session.setText(connection.getText());
									}
									if (xmpp.hasFeaturesCarbon()) {
										carbon.setText("Yes");
									} else {
										carbon.setText("No");
									}
									if (xmpp.hasFeatureRosterManagment()) {
										roster.setText("Yes");
									} else {
										roster.setText("No");
									}
									builder.setView(view);
								} else {
									builder.setMessage("Account is offline");
								}
								builder.setPositiveButton("Hide", null);
								builder.create().show();
							}
							return true;
						}

						
					}));
					return true;
				} else {
					return false;
				}
			}
		});
	}

	@Override
	protected void onStop() {
		if (xmppConnectionServiceBound) {
			xmppConnectionService.removeOnAccountListChangedListener();
			xmppConnectionService.removeOnTLSExceptionReceivedListener();
		}
		super.onStop();
	}

	@Override
	void onBackendConnected() {
		xmppConnectionService.setOnAccountListChangedListener(accountChanged);
		xmppConnectionService.setOnTLSExceptionReceivedListener(tlsExceptionReceived);
		this.accountList.clear();
		this.accountList.addAll(xmppConnectionService.getAccounts());
		accountListViewAdapter.notifyDataSetChanged();
		if (this.accountList.size() == 0) {
			getActionBar().setDisplayHomeAsUpEnabled(false);
			addAccount();
		}
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.manageaccounts, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		switch (item.getItemId()) {
		case R.id.action_settings:
			startActivity(new Intent(this, SettingsActivity.class));
			break;
		case R.id.action_add_account:
			addAccount();
			break;
		default:
			break;
		}
		return super.onOptionsItemSelected(item);
	}

	private void editAccount(Account account) {
			EditAccount dialog = new EditAccount();
			dialog.setAccount(account);
			dialog.setEditAccountListener(new EditAccountListener() {

				@Override
				public void onAccountEdited(Account account) {
					xmppConnectionService.updateAccount(account);
					if (actionMode != null) { 
						actionMode.finish();
					}
				}
			});
			dialog.show(getFragmentManager(), "edit_account");
		
	}
	
	protected void addAccount() {
		final Activity activity = this;
		EditAccount dialog = new EditAccount();
		dialog.setEditAccountListener(new EditAccountListener() {

			@Override
			public void onAccountEdited(Account account) {
				xmppConnectionService.createAccount(account);
				activity.getActionBar().setDisplayHomeAsUpEnabled(true);
			}
		});
		dialog.show(getFragmentManager(), "add_account");
	}

	
	@Override
	public void onActionModeStarted(ActionMode mode) {
		super.onActionModeStarted(mode);
		this.isActionMode = true;
	}
	
	@Override
	public void onActionModeFinished(ActionMode mode) {
		super.onActionModeFinished(mode);
		this.isActionMode = false;
		accountListView.clearChoices();
		accountListView.requestLayout();
		accountListView.post(new Runnable() {
            @Override
            public void run() {
                accountListView.setChoiceMode(ListView.CHOICE_MODE_NONE);
            }
        });
	}
	
	 @Override
	 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		 super.onActivityResult(requestCode, resultCode, data);
		 if (resultCode == RESULT_OK) {
			if (requestCode == REQUEST_ANNOUNCE_PGP) {
				 try {
					xmppConnectionService.generatePgpAnnouncement(selectedAccountForActionMode);
				} catch (UserInputRequiredException e) {
					Log.d("gultsch","already came back. ignoring");
				}
			 }
		 }
	 }
}