/**
 * ProjectLaogai
 *
 * Copyright 2018  <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.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.FragmentTransaction
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.fragments.HomeFragment
import org.mosad.seil0.projectlaogai.fragments.MensaFragment
import org.mosad.seil0.projectlaogai.fragments.SettingsFragment
import org.mosad.seil0.projectlaogai.fragments.TimeTableFragment
import org.mosad.seil0.projectlaogai.hsoparser.*
import kotlin.system.measureTimeMillis

class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener {

    //TODO make toolbar and navbar global
    private val mensaParser = MensaParser()
    private val timeTableParser = TimeTableParser()

    private var weekMenus = ArrayList<Meal>()
    private var courseTTLinkList = ArrayList<CourseTTLink>()
    private var timeTableCurrentWeek = arrayOf<Array<Lesson>>()
    private var timeTableNextWeek = arrayOf<Array<Lesson>>()

    private lateinit var course: CourseTTLink

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

        // load mensa and timetable
        load()

        //init home fragment TODO make a abstract fragment class
        val homeFragment = HomeFragment()
        homeFragment.setMainActivity(this)
        val fragmentTransaction: FragmentTransaction = supportFragmentManager.beginTransaction()
        fragmentTransaction.replace(R.id.fragment_container, homeFragment)
        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 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 -> {
                val homeFragment = HomeFragment()
                homeFragment.setMainActivity(this)
                val fragmentTransaction: FragmentTransaction = supportFragmentManager.beginTransaction()
                fragmentTransaction.replace(R.id.fragment_container, homeFragment)
                fragmentTransaction.commit()
            }
            R.id.nav_mensa -> {
                val mensaFragment = MensaFragment()
                mensaFragment.setMainActivity(this)
                val fragmentTransaction: FragmentTransaction = supportFragmentManager.beginTransaction()
                fragmentTransaction.replace(R.id.fragment_container, mensaFragment)
                fragmentTransaction.commit()
            }
            R.id.nav_timetable -> {
                val timeTableFragment = TimeTableFragment()
                timeTableFragment.setMainActivity(this)
                val fragmentTransaction: FragmentTransaction = supportFragmentManager.beginTransaction()
                fragmentTransaction.replace(R.id.fragment_container, timeTableFragment)
                fragmentTransaction.commit()

            }
            R.id.nav_moodle -> {

            }
            R.id.nav_settings -> {
                val settingsFragment = SettingsFragment()
                settingsFragment.setMainActivity(this)
                val fragmentTransaction: FragmentTransaction = supportFragmentManager.beginTransaction()
                fragmentTransaction.replace(R.id.fragment_container, settingsFragment)
                fragmentTransaction.commit()
            }
        }

        drawer_layout.closeDrawer(GravityCompat.START)
        return true
    }

    /**
     * update the gui with the data of the new selected course
     * save selected course and courseTTLink
     */
    fun updateCourse(course: CourseTTLink) {
        println(course.course)
        println(course.courseTTLink)

        this.course = course
        // save new selected course
        val sharedPref = getPreferences(MODE_PRIVATE) ?: return
        with (sharedPref.edit()) {
            putString(getString(R.string.save_key_course), course.course)
            putString(getString(R.string.save_key_courseTTLink), course.courseTTLink.replace("http", "https"))
            apply()
        }

        timeTableCurrentWeek = timeTableParser.getTimeTable(course.courseTTLink.replace("http", "https"))
    }

    /**
     * load the mensa menus of the current week
     * TODO evaluate if we should use a timeout here
     */
    private fun load() {

        // load saved course
        val sharedPref = getPreferences(MODE_PRIVATE) ?: return
        course = CourseTTLink(
            sharedPref.getString(getString(R.string.save_key_courseTTLink),
                "https://www.hs-offenburg.de/index.php?id=6627&class=class&iddV=DA64F6FE-9DDB-429E-A677-05D0D40CB636&week=0")!!,
            sharedPref.getString(getString(R.string.save_key_course), "AI3")!!
        )

        /**
         * 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 {
                courseTTLinkList = timeTableParser.getCourseTTLinks()
            }

            doAsync {
                try {
                    timeTableNextWeek = timeTableParser.getTimeTable(course.courseTTLink.replace("week=0","week=1"))
                } catch (e: Exception) {
                    e.stackTrace
                }
            }

            val t1 = doAsync {
                weekMenus = mensaParser.getMensaMenu()
            }

            val t2 = doAsync {
                try {
                    timeTableCurrentWeek = timeTableParser.getTimeTable(course.courseTTLink)
                } catch (e: Exception) {

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

                    e.stackTrace
                }
            }

            t1.get()
            t2.get()
        }
        println("Completed in $time ms")

    }

    fun getCourseTTLinkList(): ArrayList<CourseTTLink>{
        return  courseTTLinkList
    }

    fun getTimeTableCurrentWeek(): Array<Array<Lesson>> {
        return timeTableCurrentWeek
    }

    fun getTimeTableNextWeek(): Array<Array<Lesson>> {
        return timeTableNextWeek
    }

    fun getWeekMenu(): ArrayList<Meal>{
        return weekMenus
    }

    fun getCourse(): CourseTTLink {
        return course
    }

}