package org.bspeice.minimalbible.test.activity.downloader.manager;

import android.net.ConnectivityManager;
import android.net.NetworkInfo;

import org.bspeice.minimalbible.Injector;
import org.bspeice.minimalbible.activity.downloader.DownloadPrefs;
import org.bspeice.minimalbible.activity.downloader.manager.RefreshManager;
import org.crosswire.jsword.book.Book;
import org.crosswire.jsword.book.install.Installer;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.Collection;
import java.util.List;

import javax.inject.Inject;
import javax.inject.Singleton;

import dagger.Module;
import dagger.ObjectGraph;
import dagger.Provides;
import rx.functions.Action1;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

public class RefreshManagerTest implements Injector {

    final String mockBookName = "MockBook";
    /**
     * The object graph that should be given to classes under test. Each test is responsible
     * for setting their own ObjectGraph.
     */
    ObjectGraph mObjectGraph;
    @Inject
    RefreshManager rM;
    Installer mockInstaller;
    Book mockBook;

    @Before
    public void setUp() {
        // Environment setup
        mockBook = mock(Book.class);
        when(mockBook.getName()).thenReturn(mockBookName);

        mockInstaller = mock(Installer.class);
        List<Book> bookList = new ArrayList<Book>();
        bookList.add(mockBook);
        when(mockInstaller.getBooks()).thenReturn(bookList);

        Collection<Installer> mockInstallers = new ArrayList<Installer>();
        mockInstallers.add(mockInstaller);

        RMTModules modules = new RMTModules(mockInstallers);
        mObjectGraph = ObjectGraph.create(modules);

        // Now the actual test
        mObjectGraph.inject(this); // Get the RefreshManager
    }

    @Override
    public void inject(Object o) {
        mObjectGraph.inject(o);
    }

    @Test
    public void testGetAvailableModulesFlattened() throws Exception {
        rM.getFlatModules()
                .toBlocking()
                .forEach(new Action1<Book>() {
                    @Override
                    public void call(Book book) {
                        assertEquals(mockBookName, book.getName());
                    }
                });

        verify(mockInstaller).getBooks();
        verify(mockBook).getName();
    }

    @Test
    public void testInstallerFromBook() throws Exception {
        Installer i = rM.installerFromBook(mockBook).toBlocking().first();

        assertSame(mockInstaller, i);
        verify(mockInstaller).getBooks();
    }

    /**
     * Test the conditions are right for downloading
     * I'd like to point out that I can test all of this without requiring mocking of
     * either the preferences or network state. Value Boundaries for the win.
     */
    @Test
    public void testDoUpdate() {
        long fourteenDaysAgo = Calendar.getInstance().getTime().getTime() - 1209600;
        long sixteenDaysAgo = Calendar.getInstance().getTime().getTime() - 1382400;

        assertFalse(rM.doReload(true, fourteenDaysAgo, ConnectivityManager.TYPE_DUMMY));
        assertFalse(rM.doReload(true, fourteenDaysAgo, ConnectivityManager.TYPE_WIFI));
        assertFalse(rM.doReload(true, sixteenDaysAgo, ConnectivityManager.TYPE_DUMMY));
        assertTrue(rM.doReload(true, sixteenDaysAgo, ConnectivityManager.TYPE_WIFI));

        assertFalse(rM.doReload(false, fourteenDaysAgo, ConnectivityManager.TYPE_WIFI));
        assertFalse(rM.doReload(false, fourteenDaysAgo, ConnectivityManager.TYPE_DUMMY));
        assertFalse(rM.doReload(false, sixteenDaysAgo, ConnectivityManager.TYPE_WIFI));
        assertFalse(rM.doReload(false, sixteenDaysAgo, ConnectivityManager.TYPE_DUMMY));
    }

    @Module(injects = {RefreshManagerTest.class, RefreshManager.class})
    @SuppressWarnings("unused")
    class RMTModules {
        Collection<Installer> installers;
        ConnectivityManager manager;
        DownloadPrefs prefs;

        RMTModules(Collection<Installer> installers) {
            this.installers = installers;

            // Set reasonable defaults for the manager and preferences, can over-ride if need-be
            manager = mock(ConnectivityManager.class);
            NetworkInfo mockNetworkInfo = Mockito.mock(NetworkInfo.class);

            when(manager.getActiveNetworkInfo()).thenReturn(mockNetworkInfo);
            when(mockNetworkInfo.getType()).thenReturn(ConnectivityManager.TYPE_WIFI);

            prefs = mock(DownloadPrefs.class);
        }

        @Provides
        @Singleton
        Collection<Installer> provideInstallers() {
            return this.installers;
        }

        void setConnectivityManager(ConnectivityManager manager) {
            this.manager = manager;
        }

        void setPrefs(DownloadPrefs prefs) {
            this.prefs = prefs;
        }

        @Provides
        List<String> excludeList() {
            return new ArrayList<>();
        }

        @Provides
        @Singleton
        RefreshManager refreshManager(Collection<Installer> installers, List<String> excludes) {
            return new RefreshManager(installers, excludes,
                    prefs, manager);
        }
    }
}