package com.camilstaps.taize;

import android.content.Intent;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.HapticFeedbackConstants;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.ViewGroup;

import com.camilstaps.common.Listener;

public class MainActivity extends ActionBarActivity implements SwipeRefreshLayout.OnRefreshListener {

    ViewPager pager;
    PagerAdapter pagerAdapter;
    SwipeRefreshLayout swipeRefreshLayout;
    int itemsInRefreshQueue = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Taize.cleanTextSets(this);

        setContentView(R.layout.activity_main);

        swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swiperefresh);
        swipeRefreshLayout.setOnRefreshListener(this);

        pager = (ViewPager) findViewById(R.id.pager);
        pagerAdapter = new PagerAdapter(getSupportFragmentManager());
        pager.setAdapter(pagerAdapter);
        goToToday();

        final ActionBar actionBar = getSupportActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        ActionBar.TabListener tabListener = new ActionBar.TabListener() {
            @Override
            public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {}

            @Override
            public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {}

            @Override
            public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {}
        };

        getWindow().getDecorView().performHapticFeedback(HapticFeedbackConstants.LONG_PRESS);

        actionBar.addTab(actionBar.newTab().setText("Reading").setIcon(R.drawable.ic_action_reading).setTabListener(tabListener));
        actionBar.addTab(actionBar.newTab().setText("Meditation").setIcon(R.drawable.ic_action_meditation).setTabListener(tabListener));
        actionBar.addTab(actionBar.newTab().setText("Podcast").setIcon(R.drawable.ic_action_podcast).setTabListener(tabListener));
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater inflater = getMenuInflater();
        inflater.inflate(R.menu.global, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();

        Intent intent;
        switch (id) {
            case R.id.action_settings:
                intent = new Intent(this, SettingsActivity.class);
                startActivity(intent);
                return true;
            case R.id.action_share:
                intent = new Intent();
                intent.setAction(Intent.ACTION_SEND);
                intent.putExtra(Intent.EXTRA_TEXT, ((DailyReadingFragment) pagerAdapter.instantiateItem(pager, pager.getCurrentItem())).getReading());
                intent.setType("text/plain");
                startActivity(intent);
                return true;
            case R.id.action_today:
                goToToday();
                return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onRefresh() {
        increaseRefreshQueue();
        increaseRefreshQueue();

        DailyReadingFragment fragment = (DailyReadingFragment) pagerAdapter.instantiateItem(pager, pager.getCurrentItem());

        fragment.setDailyReading(new Listener<DailyReading>() {
            @Override
            public void success(DailyReading data) {
                decreaseRefreshQueue();
            }

            @Override
            public void failure() {
                decreaseRefreshQueue();
            }
        });

        fragment.setDailyReadingBibleText(new Listener<String>() {
            @Override
            public void success(String data) {
                decreaseRefreshQueue();
            }

            @Override
            public void failure() {
                decreaseRefreshQueue();
            }
        });
    }

    protected void increaseRefreshQueue() {
        itemsInRefreshQueue++;
        swipeRefreshLayout.setRefreshing(true);
    }

    protected void decreaseRefreshQueue() {
        itemsInRefreshQueue--;
        if (itemsInRefreshQueue <= 0) {
            itemsInRefreshQueue = 0;
            swipeRefreshLayout.setRefreshing(false);
        }
    }

    protected void goToToday() {
        Log.d("MAIN", "Going to scroll from " + pager.getCurrentItem() + " to " + (PagerAdapter.COUNT - PagerAdapter.LOOKAHEAD - 1) + "...");
        pager.setCurrentItem(PagerAdapter.COUNT - PagerAdapter.LOOKAHEAD - 1, false);

    }

    private class PagerAdapter extends FragmentStatePagerAdapter {
        public static final int COUNT = Integer.MAX_VALUE;
        public static final int LOOKAHEAD = 31;

        public PagerAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int i) {
            Log.d("PA", "Get " + i);

            Fragment fragment = new DailyReadingFragment();

            Bundle args = new Bundle();
            args.putInt("dateOffset", -i + LOOKAHEAD);
            fragment.setArguments(args);

            return fragment;
        }

        @Override
        public int getCount() {
            return COUNT;
        }

        @Override
        public CharSequence getPageTitle(int position) {
            return "OBJECT " + (position + 1);
        }

        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            Log.d("PA", "Instantiate " + position);
            if (position < 2) {
                return super.instantiateItem(container, position);
            } else {
                return super.instantiateItem(container, COUNT - position - 1);
            }
        }

        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            Log.d("PA", "Destroy " + position);
            if (position < 2) {
                super.destroyItem(container, position, object);
            } else {
                super.destroyItem(container, COUNT - position - 1, object);
            }
        }

        public int getItemPosition(Object object) {
            return POSITION_NONE;
        }
    }

}