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package de.danoeh.antennapod.fragment;

import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v14.preference.SwitchPreference;
import android.support.v7.preference.ListPreference;
import android.support.v7.preference.PreferenceFragmentCompat;
import de.danoeh.antennapod.R;
import de.danoeh.antennapod.activity.FeedSettingsActivity;
import de.danoeh.antennapod.core.dialog.ConfirmationDialog;
import de.danoeh.antennapod.core.feed.Feed;
import de.danoeh.antennapod.core.feed.FeedPreferences;
import de.danoeh.antennapod.core.preferences.UserPreferences;
import de.danoeh.antennapod.core.storage.DBWriter;

public class FeedSettingsFragment extends PreferenceFragmentCompat {
    private Feed feed;
    private FeedPreferences feedPreferences;

    @Override
    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
        addPreferencesFromResource(R.xml.feed_settings);

        feed = ((FeedSettingsActivity) getActivity()).getFeed();
        feedPreferences = feed.getPreferences();

        setupAutoDownloadPreference();
        setupKeepUpdatedPreference();
        setupAutoDeletePreference();

        updateAutoDeleteSummary();
        updateAutoDownloadEnabled();
    }

    private void setupAutoDeletePreference() {
        ListPreference autoDeletePreference = (ListPreference) findPreference("autoDelete");
        autoDeletePreference.setOnPreferenceChangeListener((preference, newValue) -> {
            switch ((String) newValue) {
                case "global":
                    feedPreferences.setAutoDeleteAction(FeedPreferences.AutoDeleteAction.GLOBAL);
                    break;
                case "always":
                    feedPreferences.setAutoDeleteAction(FeedPreferences.AutoDeleteAction.YES);
                    break;
                case "never":
                    feedPreferences.setAutoDeleteAction(FeedPreferences.AutoDeleteAction.NO);
                    break;
            }
            feed.savePreferences();
            updateAutoDeleteSummary();
            return false;
        });
    }

    private void updateAutoDeleteSummary() {
        ListPreference autoDeletePreference = (ListPreference) findPreference("autoDelete");

        switch (feedPreferences.getAutoDeleteAction()) {
            case GLOBAL:
                autoDeletePreference.setSummary(R.string.feed_auto_download_global);
                autoDeletePreference.setValue("global");
                break;
            case YES:
                autoDeletePreference.setSummary(R.string.feed_auto_download_always);
                autoDeletePreference.setValue("always");
                break;
            case NO:
                autoDeletePreference.setSummary(R.string.feed_auto_download_never);
                autoDeletePreference.setValue("never");
                break;
        }
    }

    private void setupKeepUpdatedPreference() {
        SwitchPreference pref = (SwitchPreference) findPreference("keepUpdated");

        pref.setChecked(feedPreferences.getKeepUpdated());
        pref.setOnPreferenceChangeListener((preference, newValue) -> {
            boolean checked = newValue == Boolean.TRUE;
            feedPreferences.setKeepUpdated(checked);
            feed.savePreferences();
            pref.setChecked(checked);
            return false;
        });
    }

    private void setupAutoDownloadPreference() {
        SwitchPreference pref = (SwitchPreference) findPreference("autoDownload");

        pref.setEnabled(UserPreferences.isEnableAutodownload());
        pref.setChecked(feedPreferences.getAutoDownload());
        pref.setOnPreferenceChangeListener((preference, newValue) -> {
            boolean checked = newValue == Boolean.TRUE;

            feedPreferences.setAutoDownload(checked);
            feed.savePreferences();
            updateAutoDownloadEnabled();
            ApplyToEpisodesDialog dialog = new ApplyToEpisodesDialog(getActivity(), checked);
            dialog.createNewDialog().show();
            pref.setChecked(checked);
            return false;
        });
    }

    private void updateAutoDownloadEnabled() {
        if (feed != null && feed.getPreferences() != null) {
            boolean enabled = feed.getPreferences().getAutoDownload() && UserPreferences.isEnableAutodownload();
            findPreference("filters").setEnabled(enabled);
        }
    }

    private class ApplyToEpisodesDialog extends ConfirmationDialog {
        private final boolean autoDownload;

        ApplyToEpisodesDialog(Context context, boolean autoDownload) {
            super(context, R.string.auto_download_apply_to_items_title,
                    R.string.auto_download_apply_to_items_message);
            this.autoDownload = autoDownload;
            setPositiveText(R.string.yes);
            setNegativeText(R.string.no);
        }

        @Override
        public  void onConfirmButtonPressed(DialogInterface dialog) {
            DBWriter.setFeedsItemsAutoDownload(feed, autoDownload);
        }
    }
}