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package ca.allanwang.kau.utils
import android.content.Context
import android.content.pm.PackageManager
import android.content.res.Resources
import android.os.Build
import android.os.Looper
import android.support.annotation.IntRange
import ca.allanwang.kau.R
import ca.allanwang.kau.logging.KL
import java.math.RoundingMode
import java.text.DecimalFormat
/**
* Created by Allan Wang on 2017-05-28.
*/
/**
* Markers to isolate respective extension @KauUtils functions to their extended class
* Avoids having a whole bunch of methods for nested calls
*/
@DslMarker
annotation class KauUtils
@KauUtils val Int.dpToPx: Int
get() = (this * Resources.getSystem().displayMetrics.density).toInt()
@KauUtils val Int.pxToDp: Int
get() = (this / Resources.getSystem().displayMetrics.density).toInt()
/**
* Log whether current state is in the main thread
*/
@KauUtils fun checkThread(id: Int) {
val status = if (Looper.myLooper() == Looper.getMainLooper()) "is" else "is not"
KL.d("$id $status in the main thread")
}
/**
* Converts minute value to string
* Whole hours and days will be converted as such, otherwise it will default to x minutes
*/
@KauUtils fun Context.minuteToText(minutes: Long): String = with(minutes) {
if (this < 0L) string(R.string.kau_none)
else if (this == 60L) string(R.string.kau_one_hour)
else if (this == 1440L) string(R.string.kau_one_day)
else if (this % 1440L == 0L) String.format(string(R.string.kau_x_days), this / 1440L)
else if (this % 60L == 0L) String.format(string(R.string.kau_x_hours), this / 60L)
else String.format(string(R.string.kau_x_minutes), this)
}
@KauUtils fun Number.round(@IntRange(from = 1L) decimalCount: Int): String {
val expression = StringBuilder().append("#.")
(1..decimalCount).forEach { expression.append("#") }
val formatter = DecimalFormat(expression.toString())
formatter.roundingMode = RoundingMode.HALF_UP
return formatter.format(this)
}
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