/**
 * 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.fragments

import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.LinearLayout
import androidx.fragment.app.Fragment
import com.afollestad.materialdialogs.MaterialDialog
import kotlinx.android.synthetic.main.fragment_home.*
import org.jetbrains.anko.doAsync
import org.jetbrains.anko.uiThread
import org.mosad.seil0.projectlaogai.PreferencesController.Companion.cTimeTableCurrentWeek
import org.mosad.seil0.projectlaogai.PreferencesController.Companion.cMenusCurrentWeek
import org.mosad.seil0.projectlaogai.R
import org.mosad.seil0.projectlaogai.hsoparser.*
import org.mosad.seil0.projectlaogai.uicomponents.LessonCardView
import org.mosad.seil0.projectlaogai.uicomponents.LessonTextView
import java.util.*

/**
 * The "home" controller class
 * contains all needed parts to display the apps home screen
 */
class HomeFragment : Fragment() {

    private lateinit var linLayoutTimeTable: LinearLayout

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {

        val view: View = inflater.inflate(R.layout.fragment_home, container, false)

        // init UI elements
        linLayoutTimeTable = view.findViewById(R.id.linLayoutTimeTable)

        //setText()
        addCurrentMensaMenu()
        addCurrentTimeTable()

        // Inflate the layout for this fragment
        return view
    }

    /**
     * add the current mensa meal to the home screens
     */
    private fun addCurrentMensaMenu() {
        doAsync {
            val dayMenus: ArrayList<Meal>
            val cal = Calendar.getInstance()


            if (cal.get(Calendar.HOUR_OF_DAY) < 15) {
                dayMenus = cMenusCurrentWeek.day[NotRetardedCalendar().getDayOfWeekIndex()]
            } else {
                dayMenus = cMenusCurrentWeek.day[NotRetardedCalendar().getTomorrowWeekIndex()]
                uiThread {
                    txtView_Menu1Heading.text = resources.getString(R.string.meal_1_tomorrow)
                    txtView_Menu2Heading.text = resources.getString(R.string.meal_2_tomorrow)
                }
            }

            uiThread {

                if (dayMenus.size >= 2) {
                    // get the index of the first meal, not a "Schneller Teller"
                    loop@ for ((i, meal) in dayMenus.withIndex()) {
                        if (meal.heading.contains("Essen")) {
                            for ((j, part) in dayMenus[i].parts.withIndex()) {
                                txtViewMenu1.append(part)
                                if (j < (dayMenus[i].parts.size - 2))
                                    txtViewMenu1.append("\n")
                            }

                            for ((j, part) in dayMenus[i + 1].parts.withIndex()) {
                                txtViewMenu2.append(part)
                                if (j < (dayMenus[i + 1].parts.size - 2))
                                    txtViewMenu2.append("\n")
                            }

                            break@loop
                        }
                    }

                } else {
                    if (txtView_Menu1Heading.text == resources.getString(R.string.meal_1_tomorrow)) {
                        txtViewMenu1.text = resources.getString(R.string.no_meal_tomorrow)
                        txtViewMenu2.text = resources.getString(R.string.no_meal_tomorrow)
                    } else {
                        txtViewMenu1.text = resources.getString(R.string.no_meal_today)
                        txtViewMenu2.text = resources.getString(R.string.no_meal_today)
                    }
                }
            }
        }

    }

    /**
     * add the current timetable to the home screen
     */
    private fun addCurrentTimeTable() {
        val dayIndex = NotRetardedCalendar().getDayOfWeekIndex()

        if (cTimeTableCurrentWeek.days.isNotEmpty() && dayIndex < 6) {

            val timeTableDay = cTimeTableCurrentWeek.days[dayIndex]

            // for all timeslots of the day
            for ((i, timeslot) in timeTableDay.timeslots.withIndex()) {
                val lessonCardView = LessonCardView(context!!, null)
                lessonCardView.getTxtViewTime().text = DataTypes().getTime()[i]

                for (lesson in timeslot) {
                    val lessonTxtView = LessonTextView(context!!)
                    lessonTxtView.setLesson(lesson)

                    // TODO why does this exist
                    if (lessonTxtView.text.length > 3)
                        lessonCardView.getLinLayoutLesson().addView(lessonTxtView)
                }

                if (lessonCardView.getLinLayoutLesson().childCount > 2)
                    linLayoutTimeTable.addView(lessonCardView)
            }

            // add a card if there is no lesson today
            if (linLayoutTimeTable.childCount == 0) {
                // TODO we could display the next day with a lecture
                val lessonTxtView = LessonTextView(context!!)
                lessonTxtView.setText(resources.getString(R.string.no_lesson_today))

                val noLessonCardView = LessonCardView(context!!, null)
                noLessonCardView.getLinLayoutLesson().addView(lessonTxtView)

                linLayoutTimeTable.addView(noLessonCardView)
            }
        } else {
            if (dayIndex == 6) {
                // if that's the case it's sunday
                val lessonTxtView = LessonTextView(context!!)
                lessonTxtView.setText(resources.getString(R.string.no_lesson_today))

                val noLessonCardView = LessonCardView(context!!, null)
                noLessonCardView.getLinLayoutLesson().addView(lessonTxtView)

                linLayoutTimeTable.addView(noLessonCardView)
            } else {
                MaterialDialog(context!!)
                    .title(R.string.error)
                    .message(R.string.gen_tt_error)
                    .show()
                // TODO log the error and send feedback
            }

        }
    }

}