/*
 * Copyright (C) 2012 Andrew Neal
 * Copyright (C) 2014 The CyanogenMod 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.cyanogenmod.eleven.utils;

import android.content.Context;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.preference.PreferenceManager;

import com.cyanogenmod.eleven.R;
import com.cyanogenmod.eleven.ui.fragments.AlbumFragment;
import com.cyanogenmod.eleven.ui.fragments.ArtistFragment;
import com.cyanogenmod.eleven.ui.fragments.SongFragment;
import com.cyanogenmod.eleven.ui.fragments.phone.MusicBrowserPhoneFragment;

/**
 * A collection of helpers designed to get and set various preferences across
 * Apollo.
 * 
 * @author Andrew Neal (andrewdneal@gmail.com)
 */
public final class PreferenceUtils {

    /* Default start page (Artist page) */
    public static final int DEFFAULT_PAGE = 2;

    /* Saves the last page the pager was on in {@link MusicBrowserPhoneFragment} */
    public static final String START_PAGE = "start_page";

    // Sort order for the artist list
    public static final String ARTIST_SORT_ORDER = "artist_sort_order";

    // Sort order for the artist song list
    public static final String ARTIST_SONG_SORT_ORDER = "artist_song_sort_order";

    // Sort order for the artist album list
    public static final String ARTIST_ALBUM_SORT_ORDER = "artist_album_sort_order";

    // Sort order for the album list
    public static final String ALBUM_SORT_ORDER = "album_sort_order";

    // Sort order for the album song list
    public static final String ALBUM_SONG_SORT_ORDER = "album_song_sort_order";

    // Sort order for the song list
    public static final String SONG_SORT_ORDER = "song_sort_order";

    // Key used to download images only on Wi-Fi
    public static final String ONLY_ON_WIFI = "only_on_wifi";

    // Key that gives permissions to download missing album covers
    public static final String DOWNLOAD_MISSING_ARTWORK = "download_missing_artwork";

    // Key that gives permissions to download missing artist images
    public static final String DOWNLOAD_MISSING_ARTIST_IMAGES = "download_missing_artist_images";

    // Key used to set the overall theme color
    public static final String DEFAULT_THEME_COLOR = "default_theme_color";

    // datetime cutoff for determining which songs go in last added playlist
    public static final String LAST_ADDED_CUTOFF = "last_added_cutoff";

    // show lyrics option
    public static final String SHOW_LYRICS = "show_lyrics";

    // show visualizer flag
    public static final String SHOW_VISUALIZER = "music_visualization";

    private static PreferenceUtils sInstance;

    private final SharedPreferences mPreferences;

    /**
     * Constructor for <code>PreferenceUtils</code>
     * 
     * @param context The {@link Context} to use.
     */
    public PreferenceUtils(final Context context) {
        mPreferences = PreferenceManager.getDefaultSharedPreferences(context);
    }

    /**
     * @param context The {@link Context} to use.
     * @return A singleton of this class
     */
    public static final PreferenceUtils getInstance(final Context context) {
        if (sInstance == null) {
            sInstance = new PreferenceUtils(context.getApplicationContext());
        }
        return sInstance;
    }

    /**
     * Saves the current page the user is on when they close the app.
     * 
     * @param value The last page the pager was on when the onDestroy is called
     *            in {@link MusicBrowserPhoneFragment}.
     */
    public void setStartPage(final int value) {
        ApolloUtils.execute(false, new AsyncTask<Void, Void, Void>() {
            @Override
            protected Void doInBackground(final Void... unused) {
                final SharedPreferences.Editor editor = mPreferences.edit();
                editor.putInt(START_PAGE, value);
                editor.apply();

                return null;
            }
        }, (Void[])null);
    }

    /**
     * Returns the last page the user was on when the app was exited.
     * 
     * @return The page to start on when the app is opened.
     */
    public final int getStartPage() {
        return mPreferences.getInt(START_PAGE, DEFFAULT_PAGE);
    }

    /**
     * Sets the new theme color.
     * 
     * @param value The new theme color to use.
     */
    public void setDefaultThemeColor(final int value) {
        ApolloUtils.execute(false, new AsyncTask<Void, Void, Void>() {
            @Override
            protected Void doInBackground(final Void... unused) {
                final SharedPreferences.Editor editor = mPreferences.edit();
                editor.putInt(DEFAULT_THEME_COLOR, value);
                editor.apply();

                return null;
            }
        }, (Void[])null);
    }

    /**
     * Returns the current theme color.
     * 
     * @param context The {@link Context} to use.
     * @return The default theme color.
     */
    public final int getDefaultThemeColor(final Context context) {
        return mPreferences.getInt(DEFAULT_THEME_COLOR,
                context.getResources().getColor(R.color.holo_blue_light));
    }

    /**
     * @return True if the user has checked to only download images on Wi-Fi,
     *         false otherwise
     */
    public final boolean onlyOnWifi() {
        return mPreferences.getBoolean(ONLY_ON_WIFI, true);
    }

    /**
     * @return True if the user has checked to download missing album covers,
     *         false otherwise.
     */
    public final boolean downloadMissingArtwork() {
        return mPreferences.getBoolean(DOWNLOAD_MISSING_ARTWORK, true);
    }

    /**
     * @return True if the user has checked to download missing artist images,
     *         false otherwise.
     */
    public final boolean downloadMissingArtistImages() {
        return mPreferences.getBoolean(DOWNLOAD_MISSING_ARTIST_IMAGES, true);
    }

    /**
     * Saves the sort order for a list.
     * 
     * @param key Which sort order to change
     * @param value The new sort order
     */
    private void setSortOrder(final String key, final String value) {
        ApolloUtils.execute(false, new AsyncTask<Void, Void, Void>() {
            @Override
            protected Void doInBackground(final Void... unused) {
                final SharedPreferences.Editor editor = mPreferences.edit();
                editor.putString(key, value);
                editor.apply();

                return null;
            }
        }, (Void[])null);
    }

    /**
     * Sets the sort order for the artist list.
     * 
     * @param value The new sort order
     */
    public void setArtistSortOrder(final String value) {
        setSortOrder(ARTIST_SORT_ORDER, value);
    }

    /**
     * @return The sort order used for the artist list in {@link ArtistFragment}
     */
    public final String getArtistSortOrder() {
        return mPreferences.getString(ARTIST_SORT_ORDER, SortOrder.ArtistSortOrder.ARTIST_A_Z);
    }

    /**
     * Sets the sort order for the artist song list.
     * 
     * @param value The new sort order
     */
    public void setArtistSongSortOrder(final String value) {
        setSortOrder(ARTIST_SONG_SORT_ORDER, value);
    }

    /**
     * @return The sort order used for the artist song list in
     *         {@link ArtistDetailSongAdapter}
     */
    public final String getArtistSongSortOrder() {
        return mPreferences.getString(ARTIST_SONG_SORT_ORDER,
                SortOrder.ArtistSongSortOrder.SONG_A_Z);
    }

    /**
     * Sets the sort order for the artist album list.
     * 
     * @param value The new sort order
     */
    public void setArtistAlbumSortOrder(final String value) {
        setSortOrder(ARTIST_ALBUM_SORT_ORDER, value);
    }

    /**
     * @return The sort order used for the artist album list in
     *         {@link com.cyanogenmod.eleven.ui.fragments.ArtistDetailFragment}
     */
    public final String getArtistAlbumSortOrder() {
        return mPreferences.getString(ARTIST_ALBUM_SORT_ORDER,
                SortOrder.ArtistAlbumSortOrder.ALBUM_A_Z);
    }

    /**
     * Sets the sort order for the album list.
     * 
     * @param value The new sort order
     */
    public void setAlbumSortOrder(final String value) {
        setSortOrder(ALBUM_SORT_ORDER, value);
    }

    /**
     * @return The sort order used for the album list in {@link AlbumFragment}
     */
    public final String getAlbumSortOrder() {
        return mPreferences.getString(ALBUM_SORT_ORDER, SortOrder.AlbumSortOrder.ALBUM_A_Z);
    }

    /**
     * Sets the sort order for the album song list.
     * 
     * @param value The new sort order
     */
    public void setAlbumSongSortOrder(final String value) {
        setSortOrder(ALBUM_SONG_SORT_ORDER, value);
    }

    /**
     * @return The sort order used for the album song in
     *         {@link AlbumSongFragment}
     */
    public final String getAlbumSongSortOrder() {
        return mPreferences.getString(ALBUM_SONG_SORT_ORDER,
                SortOrder.AlbumSongSortOrder.SONG_TRACK_LIST);
    }

    /**
     * Sets the sort order for the song list.
     * 
     * @param value The new sort order
     */
    public void setSongSortOrder(final String value) {
        setSortOrder(SONG_SORT_ORDER, value);
    }

    /**
     * @return The sort order used for the song list in {@link SongFragment}
     */
    public final String getSongSortOrder() {
        return mPreferences.getString(SONG_SORT_ORDER, SortOrder.SongSortOrder.SONG_A_Z);
    }

    /** @parm lastAddedMillis timestamp in millis used as a cutoff for last added playlist */
    public void setLastAddedCutoff(long lastAddedMillis) {
        mPreferences.edit().putLong(LAST_ADDED_CUTOFF, lastAddedMillis).commit();
    }

    public long getLastAddedCutoff() {
        return mPreferences.getLong(LAST_ADDED_CUTOFF, 0L);
    }

    /**
     * @return Whether we want to show lyrics
     */
    public final boolean getShowLyrics() {
        return mPreferences.getBoolean(SHOW_LYRICS, true);
    }

    public boolean getShowVisualizer() {
        return mPreferences.getBoolean(SHOW_VISUALIZER, true);
    }
}