/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.android.emergency.edit;

import android.app.Fragment;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.Preference;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.text.TextUtils;

import com.android.emergency.PreferenceKeys;
import com.android.emergency.R;
import com.android.emergency.ReloadablePreferenceInterface;
import com.android.emergency.preferences.DatePreference;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.logging.MetricsProto.MetricsEvent;

/**
 * Fragment that displays personal and medical information.
 */
public class EditEmergencyInfoFragment extends PreferenceFragment {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        addPreferencesFromResource(R.xml.edit_emergency_info);

        for (String preferenceKey : PreferenceKeys.KEYS_EDIT_EMERGENCY_INFO) {
            Preference preference = findPreference(preferenceKey);
            preference.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
                @Override
                public boolean onPreferenceChange(Preference preference, Object value) {
                    boolean notSet;
                    if (!preference.getKey().equals(PreferenceKeys.KEY_DATE_OF_BIRTH)) {
                        notSet = TextUtils.isEmpty((String) value);
                    } else {
                        notSet = DatePreference.DEFAULT_UNSET_VALUE == ((Long) value);
                    }
                    MetricsLogger.action(preference.getContext(),
                            MetricsEvent.ACTION_EDIT_EMERGENCY_INFO_FIELD,
                            preference.getKey() + ":" + (notSet ? "0" : "1"));
                    return true;
                }
            });
        }
    }

    /** Returns true if there is at least one preference set. */
    public static boolean hasAtLeastOnePreferenceSet(Context context) {
        SharedPreferences sharedPreferences =
                PreferenceManager.getDefaultSharedPreferences(context);
        for (String key : PreferenceKeys.KEYS_EDIT_EMERGENCY_INFO) {
            if (key.equals(PreferenceKeys.KEY_DATE_OF_BIRTH)) {
                if (sharedPreferences.getLong(key, DatePreference.DEFAULT_UNSET_VALUE)
                        != DatePreference.DEFAULT_UNSET_VALUE) {
                    return true;
                }
            } else if (!TextUtils.isEmpty(sharedPreferences.getString(key, ""))) {
                return true;
            }
        }
        return false;
    }

    @Override
    public void onResume() {
        super.onResume();
        reloadFromPreference();
    }

    /** Reloads all the preferences by reading the value from the shared preferences. */
    public void reloadFromPreference() {
        for (String preferenceKey : PreferenceKeys.KEYS_EDIT_EMERGENCY_INFO) {
            ReloadablePreferenceInterface preference = (ReloadablePreferenceInterface)
                    findPreference(preferenceKey);
            if (preference != null) {
                preference.reloadFromPreference();
            }
        }
    }

    public static Fragment newInstance() {
        return new EditEmergencyInfoFragment();
    }
}