package eu.alefzero.owncloud.ui.activity;

import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import android.accounts.Account;
import android.accounts.AccountManager;
import android.accounts.AccountManagerCallback;
import android.accounts.AccountManagerFuture;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.ContextMenu;
import android.view.View;
import android.view.ViewGroup;
import android.view.ContextMenu.ContextMenuInfo;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.CheckedTextView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.SherlockListActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuInflater;
import com.actionbarsherlock.view.MenuItem;

import eu.alefzero.owncloud.authenticator.AccountAuthenticator;
import eu.alefzero.owncloud.AccountUtils;
import eu.alefzero.owncloud.R;

public class AccountSelectActivity extends SherlockListActivity
                                   implements AccountManagerCallback<Boolean> {

  private final Handler mHandler = new Handler(); 
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    ActionBar action_bar = getSupportActionBar();
    action_bar.setDisplayShowTitleEnabled(true);
    action_bar.setDisplayHomeAsUpEnabled(false);
  }

  @Override
  protected void onResume() {
    super.onResume();
    populateAccountList();
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getSherlock().getMenuInflater();
    inflater.inflate(eu.alefzero.owncloud.R.menu.account_picker, menu);
    return true;
  }
  
  @Override
  public void onCreateContextMenu(ContextMenu menu, View v,
      ContextMenuInfo menuInfo) {
    getMenuInflater().inflate(R.menu.account_picker_long_click, menu);
    super.onCreateContextMenu(menu, v, menuInfo);
  }
  
  @Override
  protected void onListItemClick(ListView l, View v, int position, long id) {
    String accountName = ((TextView)v.findViewById(android.R.id.text1)).getText().toString();
    AccountUtils.setCurrentOwnCloudAccount(this, accountName);
    Intent i = new Intent(this, FileDisplayActivity.class);
    startActivity(i);
    finish();
  }

  @Override
  public boolean onMenuItemSelected(int featureId, MenuItem item) {
    if (item.getItemId() == R.id.createAccount) {
      Intent intent = new Intent(android.provider.Settings.ACTION_ADD_ACCOUNT);
      intent.putExtra("authorities",
          new String[] { AccountAuthenticator.AUTH_TOKEN_TYPE });
      startActivity(intent);
      return true;
    }
    return false;
  }
  
  @Override
  public boolean onContextItemSelected(android.view.MenuItem item) {
    AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
    int index = info.position;
    HashMap<String, String> map = (HashMap<String, String>)getListAdapter().getItem(index);
    String accountName = map.get("NAME");
    AccountManager am = (AccountManager)getSystemService(ACCOUNT_SERVICE); 
    Account accounts[] = am.getAccountsByType(AccountAuthenticator.ACCOUNT_TYPE);
    for (Account a : accounts) {
      if (a.name.equals(accountName)) {
        am.removeAccount(a, this, mHandler);
      }
    }
    
    return false;
  }


  private void populateAccountList() {
    AccountManager am = (AccountManager) getSystemService(ACCOUNT_SERVICE);
    Account accounts[] = am.getAccountsByType(AccountAuthenticator.ACCOUNT_TYPE);
    LinkedList< HashMap<String, String>> ll = new LinkedList<HashMap<String,String>>();
    for (Account a : accounts) {
      HashMap<String, String> h = new HashMap<String, String>();
      h.put("NAME", a.name);
      h.put("VER", "ownCloud version: " + am.getUserData(a, AccountAuthenticator.KEY_OC_VERSION));
      ll.add(h);
    }
    
    setListAdapter(new AccountCheckedSimpleAdepter(this,
                                                   ll,
                                                   android.R.layout.simple_list_item_single_choice,
                                                   new String[]{"NAME"},
                                                   new int[]{android.R.id.text1}));
    registerForContextMenu(getListView());
  }
  
  @Override
  public void run(AccountManagerFuture<Boolean> future) {
    if (future.isDone()) {
      Account a = AccountUtils.getCurrentOwnCloudAccount(this);
      String accountName = "";
      if (a == null) {
        Account[] accounts = AccountManager.get(this).getAccountsByType(AccountAuthenticator.ACCOUNT_TYPE);
        if (accounts.length != 0)
          accountName = accounts[0].name;
        AccountUtils.setCurrentOwnCloudAccount(this, accountName);
      }
      populateAccountList();
    }
  }
  
  private class AccountCheckedSimpleAdepter extends SimpleAdapter {
    private Account mCurrentAccount;
    private List<? extends Map<String, ?>> mPrivateData;
    
    public AccountCheckedSimpleAdepter(Context context,
                                       List<? extends Map<String, ?>> data,
                                       int resource,
                                       String[] from,
                                       int[] to) {
      super(context, data, resource, from, to);
      mCurrentAccount = AccountUtils.getCurrentOwnCloudAccount(AccountSelectActivity.this);
      mPrivateData = data;
    }
    
   @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    View v = super.getView(position, convertView, parent);
    CheckedTextView ctv = (CheckedTextView) v.findViewById(android.R.id.text1);
    if (mPrivateData.get(position).get("NAME").equals(mCurrentAccount.name)) {
      ctv.setChecked(true);
    }
    return v;
  } 
    
    
  }

}