package com.android.email.activity.setup;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;

import com.android.emailcommon.provider.Account;
import com.android.emailcommon.utility.IntentUtilities;

/**
 * This activity is headless. It exists to load the Account object from  the given account ID and
 * then starts the {@link AccountSettings} activity with the appropriate fragment showing in place.
 */
public class HeadlessAccountSettingsLoader extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        final Intent i = getIntent();
        final long accountID = IntentUtilities.getAccountIdFromIntent(i);

        if ("incoming".equals(i.getData().getLastPathSegment())) {
            new LoadAccountIncomingSettingsAsyncTask(getApplicationContext())
                    .executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, accountID);
        }
    }

    /**
     * Asynchronously loads the Account object from its ID and then navigates to the AccountSettings
     * fragment.
     */
    private class LoadAccountIncomingSettingsAsyncTask extends AsyncTask<Long, Void, Account> {
        private final Context mContext;

        private LoadAccountIncomingSettingsAsyncTask(Context context) {
            mContext = context;
        }

        protected Account doInBackground(Long... params) {
            return Account.restoreAccountWithId(mContext, params[0]);
        }

        protected void onPostExecute(Account result) {
            // create an Intent to view a new activity
            final Intent intent =
                    AccountServerSettingsActivity.getIntentForIncoming(mContext, result);
            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

            mContext.startActivity(intent);

            finish();
         }
    }
}