package com.pitchedapps.frost

import android.os.Bundle
import android.support.design.widget.FloatingActionButton
import android.support.design.widget.Snackbar
import android.support.design.widget.TabLayout
import android.support.v4.app.FragmentManager
import android.support.v4.app.FragmentPagerAdapter
import android.support.v4.view.ViewPager
import android.support.v7.app.AppCompatActivity
import android.support.v7.widget.Toolbar
import android.view.Menu
import android.view.MenuItem
import android.view.ViewTreeObserver
import butterknife.ButterKnife
import com.mikepenz.materialdrawer.Drawer
import com.pitchedapps.frost.dbflow.loadFbTabs
import com.pitchedapps.frost.dbflow.saveAsync
import com.pitchedapps.frost.facebook.FbTab
import com.pitchedapps.frost.fragments.BaseFragment
import com.pitchedapps.frost.fragments.WebFragment
import com.pitchedapps.frost.utils.*

class MainActivity : AppCompatActivity() {

    lateinit var adapter: SectionsPagerAdapter
    val toolbar: Toolbar by bindView(R.id.toolbar)
    val viewPager: ViewPager by bindView(R.id.container)
    val fab: FloatingActionButton by bindView(R.id.fab)
    val tabs: TabLayout by bindView(R.id.tabs)
    lateinit var drawer: Drawer

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
//        SwipeBackHelper.onCreate(this)
//        SwipeBackHelper.getCurrentPage(this).setSwipeBackEnable(false)
        setContentView(R.layout.activity_main)
        ButterKnife.bind(this)
        setSupportActionBar(toolbar)

        adapter = SectionsPagerAdapter(supportFragmentManager, loadFbTabs())
        viewPager.adapter = adapter
        viewPager.offscreenPageLimit = 5
        viewPager.addOnPageChangeListener(object : ViewPager.SimpleOnPageChangeListener() {
            override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {
                super.onPageScrolled(position, positionOffset, positionOffsetPixels)
                val delta: Float by lazy { positionOffset * (255 - 128).toFloat() }
                (0 until tabs.tabCount).asSequence().forEach {
                    i ->
                    tabs.getTabAt(i)?.icon?.alpha = when (i) {
                        position -> (255.0 - delta).toInt()
                        position + 1 -> (128.0 + delta).toInt()
                        else -> 128
                    }
                }
            }
        })
        setupTabs()
        fab.setOnClickListener { view ->
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show()
        }
    }


    override fun onPostCreate(savedInstanceState: Bundle?) {
        super.onPostCreate(savedInstanceState)
//        SwipeBackHelper.onPostCreate(this)
    }

    override fun onDestroy() {
        super.onDestroy()
//        SwipeBackHelper.onDestroy(this)
    }

    fun setupTabs() {

        viewPager.addOnPageChangeListener(TabLayout.TabLayoutOnPageChangeListener(tabs))
        tabs.addOnTabSelectedListener(TabLayout.ViewPagerOnTabSelectedListener(viewPager))
//        tabs.setupWithViewPager(viewPager)
        adapter.pages.forEach { tabs.addTab(tabs.newTab().setIcon(it.icon.toDrawable(this))) }
    }


    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        // Inflate the menu; this adds items to the action bar if it is present.
        menuInflater.inflate(R.menu.menu_main, menu)
        return true
    }

    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        when (item.itemId) {
            R.id.action_settings -> {
//                startActivity(Intent(this, LoginActivity::class.java))
//                finish()
            }
            R.id.action_changelog -> Changelog.show(this)
            R.id.action_call -> WebOverlayActivity.newInstance(this, "https://www.google.ca")
            R.id.action_db -> adapter.pages.saveAsync(this)
            R.id.action_restart -> {
                finish();
                overridePendingTransition(0, 0); //No transitions
                startActivity(intent);
                overridePendingTransition(0, 0);
            }
            else -> return super.onOptionsItemSelected(item)
        }
        return true
    }

    override fun onBackPressed() {
        if (currentFragment.onBackPressed()) return
        super.onBackPressed()
    }

    val currentFragment: BaseFragment
        get() = supportFragmentManager.findFragmentByTag("android:switcher:${R.id.container}:${viewPager.currentItem}") as BaseFragment

    /**
     * A [FragmentPagerAdapter] that returns a fragment corresponding to
     * one of the sections/tabs/pages.
     */
    inner class SectionsPagerAdapter(fm: FragmentManager, val pages: List<FbTab>) : FragmentPagerAdapter(fm) {

        override fun getItem(position: Int) = WebFragment.newInstance(position, pages[position].url)

        override fun getCount() = pages.size

        override fun getPageTitle(position: Int): CharSequence = getString(pages[position].titleId)
    }
}