/*
 * 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.DialogFragment;
import android.app.Fragment;
import android.os.Bundle;
import android.support.v14.preference.PreferenceFragment;
import android.support.v7.preference.Preference;
import android.text.TextUtils;

import com.android.emergency.PreferenceKeys;
import com.android.emergency.R;
import com.android.emergency.ReloadablePreferenceInterface;
import com.android.emergency.preferences.AutoCompleteEditTextPreference;
import com.android.emergency.util.PreferenceUtils;
import com.android.internal.logging.MetricsLogger;
import com.android.internal.logging.nano.MetricsProto.MetricsEvent;

/**
 * Fragment that displays personal and medical information.
 */
public class EditMedicalInfoFragment extends PreferenceFragment {
    @Override
    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
        setPreferencesFromResource(R.xml.edit_medical_info, rootKey);

        for (int i = 0; i < PreferenceKeys.KEYS_EDIT_EMERGENCY_INFO.length; i++) {
            final int index = i;
            String preferenceKey = PreferenceKeys.KEYS_EDIT_EMERGENCY_INFO[i];

            Preference preference = findPreference(preferenceKey);
            preference.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
                @Override
                public boolean onPreferenceChange(Preference preference, Object value) {
                    // Log settings changes.
                    boolean notSet = TextUtils.isEmpty((String) value);
                    // 0 is the default subtype. In DP1 and DP2 we had no explicit subtype.
                    // Start at 30 to differentiate between before and after.
                    MetricsLogger.action(
                            preference.getContext(),
                            MetricsEvent.ACTION_EDIT_EMERGENCY_INFO_FIELD,
                            30 + index * 2 + (notSet ? 0 : 1));
                    // Enable or disable settings suggestion, as appropriate.
                    PreferenceUtils.updateSettingsSuggestionState(getActivity());
                    // If the preference implements OnPreferenceChangeListener, notify it of the
                    // change as well.
                    if (Preference.OnPreferenceChangeListener.class.isInstance(preference)) {
                        return ((Preference.OnPreferenceChangeListener) preference)
                                .onPreferenceChange(preference, value);
                    }
                    return true;
                }
            });
        }
    }

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

    @Override
    public void onDisplayPreferenceDialog(Preference preference) {
        if (!(preference instanceof AutoCompleteEditTextPreference)) {
            super.onDisplayPreferenceDialog(preference);
            return;
        }
        DialogFragment fragment =
                AutoCompleteEditTextPreference.AutoCompleteEditTextPreferenceDialogFragment
                        .newInstance(preference.getKey());
        fragment.setTargetFragment(this, 0);
        fragment.show(getFragmentManager(), "dialog_preference");
    }

    /** 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 EditMedicalInfoFragment();
    }
}