/* Copyright 2019 Thomas Schneider
 *
 * This file is a part of Fedilab
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the
 * GNU General Public License as published by the Free Software Foundation; either version 3 of the
 * License, or (at your option) any later version.
 *
 * Fedilab is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with Fedilab; if not,
 * see <http://www.gnu.org/licenses>. */
package app.fedilab.android.asynctasks;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.os.Handler;
import android.os.Looper;
import android.os.SystemClock;

import java.lang.ref.WeakReference;
import java.util.ArrayList;
import java.util.List;

import app.fedilab.android.client.API;
import app.fedilab.android.client.APIResponse;
import app.fedilab.android.interfaces.OnSyncBookmarksInterface;
import app.fedilab.android.sqlite.Sqlite;
import app.fedilab.android.sqlite.StatusCacheDAO;

import static app.fedilab.android.sqlite.StatusCacheDAO.BOOKMARK_CACHE;


/**
 * Created by Thomas on 15/11/2019.
 * Sync bookmarks
 */

public class SyncBookmarksAsyncTask {

    private final OnSyncBookmarksInterface listener;
    private final WeakReference<Context> contextReference;
    private final sync type;
    private List<app.fedilab.android.client.Entities.Status> statusList;
    private String statusId;

    public SyncBookmarksAsyncTask(Context context, sync type, OnSyncBookmarksInterface onSyncBookmarksInterface) {
        this.contextReference = new WeakReference<>(context);
        this.type = type;
        this.listener = onSyncBookmarksInterface;
        doInBackground();
    }

    public SyncBookmarksAsyncTask(Context context, String statusId, OnSyncBookmarksInterface onSyncBookmarksInterface) {
        this.contextReference = new WeakReference<>(context);
        this.type = sync.REFRESH;
        this.statusId = statusId;
        this.listener = onSyncBookmarksInterface;
        doInBackground();
    }

    protected void doInBackground() {
        new Thread(() -> {
            SQLiteDatabase db = Sqlite.getInstance(contextReference.get().getApplicationContext(), Sqlite.DB_NAME, null, Sqlite.DB_VERSION).open();
            if (type == sync.IMPORT) {
                String max_id = null;
                do {
                    APIResponse apiResponse = new API(contextReference.get()).getBookmarks(max_id);
                    max_id = apiResponse.getMax_id();
                    List<app.fedilab.android.client.Entities.Status> statuses = apiResponse.getStatuses();
                    for (app.fedilab.android.client.Entities.Status tmpStatus : statuses) {
                        app.fedilab.android.client.Entities.Status status = new StatusCacheDAO(contextReference.get(), db).getStatus(BOOKMARK_CACHE, tmpStatus.getId());
                        if (status == null) {
                            new StatusCacheDAO(contextReference.get(), db).insertStatus(BOOKMARK_CACHE, tmpStatus);
                        }
                    }
                    try {
                        Thread.sleep(200);
                    } catch (InterruptedException e) {
                        SystemClock.sleep(200);
                    }
                } while (max_id != null);
                statusList = new StatusCacheDAO(contextReference.get(), db).getAllStatus(BOOKMARK_CACHE);
            } else {
                APIResponse apiResponse = new API(contextReference.get()).getStatusbyIdAndCache(statusId);
                app.fedilab.android.client.Entities.Status refreshedStatus = apiResponse.getStatuses().get(0);
                new StatusCacheDAO(contextReference.get().getApplicationContext(), db).updateStatus(BOOKMARK_CACHE, refreshedStatus);
                statusList = new ArrayList<>();
                statusList.add(refreshedStatus);
            }
            Handler mainHandler = new Handler(Looper.getMainLooper());
            Runnable myRunnable = () -> listener.onRetrieveBookmarks(statusList);
            mainHandler.post(myRunnable);
        }).start();
    }


    public enum sync {
        IMPORT,
        REFRESH
    }

}