/**
 * ProjectLaogai
 *
 * Copyright 2019  <seil0@mosad.xyz>
 *
 * 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 *
 */

package org.mosad.seil0.projectlaogai

import android.graphics.Color
import android.os.Bundle
import android.view.Menu
import android.view.MenuItem
import androidx.appcompat.app.ActionBarDrawerToggle
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.GravityCompat
import androidx.fragment.app.Fragment
import androidx.fragment.app.FragmentTransaction
import com.afollestad.aesthetic.Aesthetic
import com.afollestad.materialdialogs.MaterialDialog
import com.google.android.material.navigation.NavigationView
import kotlinx.android.synthetic.main.activity_main.*
import kotlinx.android.synthetic.main.app_bar_main.*
import org.jetbrains.anko.doAsync
import org.jetbrains.anko.uiThread
import org.mosad.seil0.projectlaogai.PreferencesController.Companion.cColor
import org.mosad.seil0.projectlaogai.PreferencesController.Companion.cCourse
import org.mosad.seil0.projectlaogai.PreferencesController.Companion.cCourseTTLinkList
import org.mosad.seil0.projectlaogai.PreferencesController.Companion.cTimeTableCurrentWeek
import org.mosad.seil0.projectlaogai.PreferencesController.Companion.cTimeTableNextWeek
import org.mosad.seil0.projectlaogai.PreferencesController.Companion.cWeekMenus
import org.mosad.seil0.projectlaogai.fragments.*
import org.mosad.seil0.projectlaogai.hsoparser.MensaParser
import org.mosad.seil0.projectlaogai.hsoparser.TimeTableParser
import kotlin.system.measureTimeMillis

class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener {

    private val mensaParser = MensaParser()
    private val timeTableParser = TimeTableParser()
    private var activeFragment: Fragment = HomeFragment() // the currently active fragment, home at the start

    override fun onCreate(savedInstanceState: Bundle?) {
        Aesthetic.attach(this)
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        setSupportActionBar(toolbar)

        // load mensa, timetable and color
        load()

        // If we haven't set any defaults, do that now
        if (Aesthetic.isFirstTime) {
            // this is executed on the first app start, use this to show tutorial etc.
            Aesthetic.config {
                colorPrimary(Color.BLACK)
                colorPrimaryDark(Color.BLACK)
                apply()
            }
        } else {
            Aesthetic.config {
                colorPrimary(cColor)
                colorPrimaryDark(cColor)
                apply()
            }
        }

        //init home fragment
        val fragmentTransaction: FragmentTransaction = supportFragmentManager.beginTransaction()
        fragmentTransaction.replace(R.id.fragment_container, activeFragment)
        fragmentTransaction.commit()

        val toggle = ActionBarDrawerToggle(
            this, drawer_layout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close
        )
        drawer_layout.addDrawerListener(toggle)
        toggle.syncState()

        nav_view.setNavigationItemSelectedListener(this)
    }

    override fun onResume() {
        super.onResume()
        Aesthetic.resume(this)
    }

    override fun onPause() {
        super.onPause()
        Aesthetic.pause(this)
    }

    override fun onBackPressed() {
        if (drawer_layout.isDrawerOpen(GravityCompat.START)) {
            drawer_layout.closeDrawer(GravityCompat.START)
        } else {
            super.onBackPressed()
        }
    }

    override fun onCreateOptionsMenu(menu: Menu): Boolean {
        // Inflate the menu; this adds items to the action bar if it is present.
        menuInflater.inflate(R.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.
        return when (item.itemId) {
            R.id.action_settings -> true
            else -> super.onOptionsItemSelected(item)
        }
    }

    override fun onNavigationItemSelected(item: MenuItem): Boolean {
        // Handle navigation view item clicks here.
        when (item.itemId) {
            R.id.nav_home -> {
                activeFragment = HomeFragment()
            }
            R.id.nav_mensa -> {
                activeFragment = MensaFragment()
            }
            R.id.nav_timetable -> {
                activeFragment = TimeTableFragment()
            }
            R.id.nav_moodle -> {
                activeFragment = MoodleFragment()
            }
            R.id.nav_settings -> {
                activeFragment = SettingsFragment()
            }
        }

        val fragmentTransaction: FragmentTransaction = supportFragmentManager.beginTransaction()
        fragmentTransaction.replace(R.id.fragment_container, activeFragment)
        fragmentTransaction.commit()

        drawer_layout.closeDrawer(GravityCompat.START)
        return true
    }

    /**
     * load the mensa menus of the current week
     */
    private fun load() {
        // load the settings
        PreferencesController.load(this) // this must be finished before doing anything else

        /**
         * load mensa, course timetable and courselist from the swfr/hso website
         * TODO make an API see https://git.mosad.xyz/Seil0/TheCitadelofRicks
         */
        val time = measureTimeMillis {

            /* getting the course list should be faster than the timetable,
             * we need have time until the user opens the dialog
             */
            doAsync {
                cCourseTTLinkList = timeTableParser.getCourseTTLinks()
            }

            val jobMenus = doAsync {
                cWeekMenus = mensaParser.getMensaMenu()
            }

            val jobTTCurrentWeek = doAsync {
                try {
                    cTimeTableCurrentWeek = timeTableParser.getTimeTable(cCourse.courseLink)
                } catch (e: Exception) {

                    uiThread {
                        MaterialDialog(this@MainActivity)
                            .title(R.string.error)
                            .message(R.string.no_tt_error)
                            .show()
                    }

                    e.stackTrace
                }
            }

            val jobTTNextWeek = doAsync {
                try {
                    cTimeTableNextWeek = timeTableParser.getTimeTable(cCourse.courseLink.replace("week=0","week=1"))
                } catch (e: Exception) {
                    e.stackTrace
                }
            }

            jobMenus.get()
            jobTTCurrentWeek.get()
            jobTTNextWeek.get()
        }
        println("Completed in $time ms")
    }

}