riff_app/app/src/main/java/io/r_a_d/radio2/preferences/AlarmFragment.kt

package io.r_a_d.radio2.preferences

import android.app.TimePickerDialog
import android.os.Bundle
import android.util.Log
import androidx.core.content.edit
import androidx.preference.*
import io.r_a_d.radio2.R
import io.r_a_d.radio2.alarm.RadioAlarm
import java.util.*

class AlarmFragment : PreferenceFragmentCompat() {
    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
        setPreferencesFromResource(R.xml.alarm_preferences, rootKey)

        val timeSet = findPreference<Preference>("timeSet")
        val isWakingUp = findPreference<SwitchPreferenceCompat>("isWakingUp")
        val alarmDays = findPreference<MultiSelectListPreference>("alarmDays")
        val snoozeDuration = findPreference<ListPreference>("snoozeDuration")


        fun updateIsWakingUpSummary(preference: SwitchPreferenceCompat?, newValue: Boolean? = true,  forceTime: Int? = null, forceDays: Set<String>? = null)
        {
            val dateLong = RadioAlarm.instance.findNextAlarmTime(context!!, forceTime, forceDays)
            val calendar = Calendar.getInstance()
            calendar.timeInMillis = dateLong
            if (newValue == true && calendar.timeInMillis > 0)
            {
                val fullWeekOrdered = arrayListOf("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
                preference?.summary = "Next alarm on ${fullWeekOrdered[calendar.get(Calendar.DAY_OF_WEEK) - 1]} " +
                        "at ${if (calendar.get(Calendar.HOUR_OF_DAY) < 10) "0" else ""}${calendar.get(Calendar.HOUR_OF_DAY)}" +
                        ":${if (calendar.get(Calendar.MINUTE) < 10) "0" else ""}${calendar.get(Calendar.MINUTE)}"
            } else if (newValue == true)
                preference?.summary = "Select at least one day"
            else
            {
                preference?.summary = "No alarm set"
            }
        }


        val hourOfDayDefault = 7
        val minuteDefault = 0
        if (!PreferenceManager.getDefaultSharedPreferences(context!!).contains("alarmTimeFromMidnight"))
        {
            PreferenceManager.getDefaultSharedPreferences(context!!).edit {
                putInt("alarmTimeFromMidnight", (60*hourOfDayDefault+minuteDefault))
                commit()
            }
        }
        val time = PreferenceManager.getDefaultSharedPreferences(context!!).getInt("alarmTimeFromMidnight", (60*hourOfDayDefault+minuteDefault))
        val hourOfDay = time / 60
        val minute = time % 60
        timeSet?.summary = "${if (hourOfDay < 10) "0" else ""}$hourOfDay:${if (minute < 10) "0" else ""}$minute"


        timeSet?.setOnPreferenceClickListener {
            val timePickerOnTimeSetListener = TimePickerDialog.OnTimeSetListener { _, hourOfDay, minute ->
                PreferenceManager.getDefaultSharedPreferences(context!!).edit {
                    putInt("alarmTimeFromMidnight", (60*hourOfDay+minute))
                    commit()
                }
                timeSet.summary = "${if (hourOfDay < 10) "0" else ""}$hourOfDay:${if (minute < 10) "0" else ""}$minute"
                RadioAlarm.instance.cancelAlarm(context!!)
                RadioAlarm.instance.setNextAlarm(context!!, isForce = true, forceTime = hourOfDay*60+minute)
                updateIsWakingUpSummary(isWakingUp, isWakingUp?.isChecked, forceTime = hourOfDay*60+minute)
            }
            val timeNew = PreferenceManager.getDefaultSharedPreferences(context!!).getInt("alarmTimeFromMidnight", 7*60)
            val hourOfDayNew = timeNew / 60
            val minuteNew = timeNew % 60
            val timePicker = TimePickerDialog(context, timePickerOnTimeSetListener, hourOfDayNew, minuteNew, true)

            timePicker.show()
            true
        }

        fun updateDays(preference : MultiSelectListPreference?, newValue : Set<String>?)
        {
            Log.d(tag, newValue.toString())
            val listOfDays : String
            val fullWeek = context!!.resources.getStringArray(R.array.weekdays).toSet()
            val workingWeek = context!!.resources.getStringArray(R.array.weekdays).toSet().minusElement("Saturday").minusElement("Sunday")
            listOfDays = when (newValue) {
                fullWeek -> context!!.getString(R.string.every_day)
                workingWeek -> context!!.getString(R.string.working_days)
                else -> {
                    // build ORDERED LIST of days... I don't know why the original one is in shambles!!
                    val fullWeekOrdered = arrayListOf("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday")
                    val selectedDays = arrayListOf<String>()
                    for (item in fullWeekOrdered) {
                        if (newValue!!.contains(item))
                            selectedDays.add(item)
                    }
                    "$selectedDays".drop(1).dropLast(1) // dropping '[' and ']'
                }
            }
            preference?.summary = listOfDays
        }

        updateDays(alarmDays, PreferenceManager.getDefaultSharedPreferences(context).getStringSet("alarmDays", setOf()))
        alarmDays?.setOnPreferenceChangeListener { preference, newValue ->
            @Suppress("UNCHECKED_CAST")
            updateDays(preference as MultiSelectListPreference, newValue as Set<String>)
            RadioAlarm.instance.cancelAlarm(context!!)
            RadioAlarm.instance.setNextAlarm(context!!, isForce = true, forceDays = newValue)
            updateIsWakingUpSummary(isWakingUp, isWakingUp?.isChecked, forceDays = newValue)
            true
        }

        updateIsWakingUpSummary(isWakingUp, isWakingUp?.isChecked)

        isWakingUp?.setOnPreferenceChangeListener { _, newValue ->
            if (newValue as Boolean)
                RadioAlarm.instance.setNextAlarm(context!!, isForce = true)
            else
                RadioAlarm.instance.cancelAlarm(context!!)
            timeSet?.isEnabled = newValue
            alarmDays?.isEnabled = newValue
            snoozeDuration?.isEnabled = newValue
            updateIsWakingUpSummary(isWakingUp, newValue)
            true
        }


        alarmDays?.isEnabled = isWakingUp?.isChecked ?: false
        timeSet?.isEnabled = isWakingUp?.isChecked ?: false
        snoozeDuration?.isEnabled = isWakingUp?.isChecked ?: false

    }


}