/* Copyright 2017 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 com.evernote.android.job.JobManager;
import com.evernote.android.job.JobRequest;

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

import app.fedilab.android.client.Entities.StoredStatus;
import app.fedilab.android.fragments.DisplayScheduledTootsFragment;
import app.fedilab.android.helper.Helper;
import app.fedilab.android.interfaces.OnRetrieveScheduledTootsInterface;
import app.fedilab.android.jobs.ScheduledBoostsSyncJob;
import app.fedilab.android.jobs.ScheduledTootsSyncJob;
import app.fedilab.android.sqlite.BoostScheduleDAO;
import app.fedilab.android.sqlite.Sqlite;
import app.fedilab.android.sqlite.StatusStoredDAO;


/**
 * Created by Thomas on 16/07/2017.
 * Retrieves scheduled toots for an account
 */

public class RetrieveScheduledTootsAsyncTask {


    private final OnRetrieveScheduledTootsInterface listener;
    private final WeakReference<Context> contextReference;
    private final DisplayScheduledTootsFragment.typeOfSchedule type;
    private List<StoredStatus> storedStatuses;

    public RetrieveScheduledTootsAsyncTask(Context context, DisplayScheduledTootsFragment.typeOfSchedule type, OnRetrieveScheduledTootsInterface onRetrieveScheduledTootsInterface) {
        this.contextReference = new WeakReference<>(context);
        this.listener = onRetrieveScheduledTootsInterface;
        this.type = type;
        doInBackground();
    }

    protected void doInBackground() {
        new Thread(() -> {
            SQLiteDatabase db = Sqlite.getInstance(this.contextReference.get().getApplicationContext(), Sqlite.DB_NAME, null, Sqlite.DB_VERSION).open();
            //Retrieves job asked by the user
            if (type == DisplayScheduledTootsFragment.typeOfSchedule.TOOT)
                storedStatuses = new StatusStoredDAO(this.contextReference.get(), db).getAllScheduled();
            else if (type == DisplayScheduledTootsFragment.typeOfSchedule.BOOST)
                storedStatuses = new BoostScheduleDAO(this.contextReference.get(), db).getAllScheduled();
            //Retrieves real jobs still waiting
            Set<JobRequest> jobRequests = null;
            if (type == DisplayScheduledTootsFragment.typeOfSchedule.TOOT)
                jobRequests = JobManager.instance().getAllJobRequestsForTag(ScheduledTootsSyncJob.SCHEDULED_TOOT);
            else if (type == DisplayScheduledTootsFragment.typeOfSchedule.BOOST)
                jobRequests = JobManager.instance().getAllJobRequestsForTag(ScheduledBoostsSyncJob.SCHEDULED_BOOST);
            int[] jobIds;
            if (jobRequests != null && jobRequests.size() > 0) {
                int i = 0;
                jobIds = new int[jobRequests.size()];
                for (JobRequest jobRequest : jobRequests) {
                    jobIds[i] = jobRequest.getJobId();
                    i++;
                }
            } else {
                jobIds = new int[]{};
            }

            if (storedStatuses != null && storedStatuses.size() > 0) {
                for (StoredStatus ss : storedStatuses) {
                    if (!Helper.isJobPresent(jobIds, ss.getJobId())) {
                        //JobId is fixed to -1 which means an error occured (it was never sent)
                        if (type == DisplayScheduledTootsFragment.typeOfSchedule.TOOT)
                            new StatusStoredDAO(this.contextReference.get(), db).updateJobId(ss.getId(), -1);
                        else if (type == DisplayScheduledTootsFragment.typeOfSchedule.BOOST)
                            new BoostScheduleDAO(this.contextReference.get(), db).updateJobId(ss.getId(), -1);
                    }
                }
                //Lets time to update db before dispaying
                SystemClock.sleep(1000);
            }
            Handler mainHandler = new Handler(Looper.getMainLooper());
            Runnable myRunnable = () -> listener.onRetrieveScheduledToots(storedStatuses);
            mainHandler.post(myRunnable);
        }).start();
    }

}