Simplify the way enums are defined

core/src/main/java/com/pouyaheydari/calendar/core/pojo/GregorianMonths.kt

@@ -1,35 +1,24 @@
 package com.pouyaheydari.calendar.core.pojo
 
 import android.content.Context
+import androidx.annotation.StringRes
 import com.pouyaheydari.calendar.core.R
 
-enum class GregorianMonths(val monthNumber: Int) {
-    January(1),
-    February(2),
-    March(3),
-    April(4),
-    May(5),
-    Jun(6),
-    July(7),
-    August(8),
-    September(9),
-    October(10),
-    November(11),
-    December(12);
+enum class GregorianMonths(@StringRes private val nameStringId: Int) {
+    January(R.string.january),
+    February(R.string.february),
+    March(R.string.march),
+    April(R.string.april),
+    May(R.string.may),
+    Jun(R.string.jun),
+    July(R.string.july),
+    August(R.string.august),
+    September(R.string.september),
+    October(R.string.october),
+    November(R.string.november),
+    December(R.string.december);
 
-    fun getName(context: Context): String = when (monthNumber) {
-        January.monthNumber -> context.getString(R.string.january)
-        February.monthNumber -> context.getString(R.string.february)
-        March.monthNumber -> context.getString(R.string.march)
-        April.monthNumber -> context.getString(R.string.april)
-        May.monthNumber -> context.getString(R.string.may)
-        Jun.monthNumber -> context.getString(R.string.jun)
-        July.monthNumber -> context.getString(R.string.july)
-        August.monthNumber -> context.getString(R.string.august)
-        September.monthNumber -> context.getString(R.string.september)
-        October.monthNumber -> context.getString(R.string.october)
-        November.monthNumber -> context.getString(R.string.november)
-        December.monthNumber -> context.getString(R.string.december)
-        else -> throw IllegalArgumentException("Month number is grater than 12")
-    }
+    val monthNumber: Int get() = this.ordinal + 1
+
+    fun getName(context: Context): String = context.getString(this.nameStringId)
 }

core/src/main/java/com/pouyaheydari/calendar/core/pojo/ShamsiMonths.kt

@@ -1,35 +1,24 @@
 package com.pouyaheydari.calendar.core.pojo
 
 import android.content.Context
+import androidx.annotation.StringRes
 import com.pouyaheydari.calendar.core.R
 
-enum class ShamsiMonths(val monthNumber: Int) {
-    Farwarding(1),
-    Ordibehesht(2),
-    Khordad(3),
-    Tir(4),
-    Mordad(5),
-    Shahrivar(6),
-    Mehr(7),
-    Aban(8),
-    Azar(9),
-    Dey(10),
-    Bahman(11),
-    Esfand(12);
+enum class ShamsiMonths(@StringRes private val nameStringId: Int) {
+    Farwarding(R.string.farvardin),
+    Ordibehesht(R.string.ordibehesht),
+    Khordad(R.string.khordad),
+    Tir(R.string.tir),
+    Mordad(R.string.mordad),
+    Shahrivar(R.string.shahrivar),
+    Mehr(R.string.mehr),
+    Aban(R.string.aban),
+    Azar(R.string.azar),
+    Dey(R.string.dey),
+    Bahman(R.string.bahman),
+    Esfand(R.string.esfand);
 
-    fun getName(context: Context): String = when (monthNumber) {
-        Farwarding.monthNumber -> context.getString(R.string.farvardin)
-        Ordibehesht.monthNumber -> context.getString(R.string.ordibehesht)
-        Khordad.monthNumber -> context.getString(R.string.khordad)
-        Tir.monthNumber -> context.getString(R.string.tir)
-        Mordad.monthNumber -> context.getString(R.string.mordad)
-        Shahrivar.monthNumber -> context.getString(R.string.shahrivar)
-        Mehr.monthNumber -> context.getString(R.string.mehr)
-        Aban.monthNumber -> context.getString(R.string.aban)
-        Azar.monthNumber -> context.getString(R.string.azar)
-        Dey.monthNumber -> context.getString(R.string.dey)
-        Bahman.monthNumber -> context.getString(R.string.bahman)
-        Esfand.monthNumber -> context.getString(R.string.esfand)
-        else -> throw IllegalArgumentException("Month number is grater than 12: $this")
-    }
+    val monthNumber: Int get() = this.ordinal + 1
+
+    fun getName(context: Context): String = context.getString(this.nameStringId)
 }

core/src/main/java/com/pouyaheydari/calendar/core/pojo/WeekDay.kt

@@ -1,25 +1,20 @@
 package com.pouyaheydari.calendar.core.pojo
 
 import android.content.Context
+import androidx.annotation.StringRes
 import com.pouyaheydari.calendar.core.R
 
-enum class WeekDay(val weekDayNumber: Int, val distanceFromFirstDayOfWeek: Int) {
-    Monday(0, 2),
-    Tuesday(1, 3),
-    Wednesday(2, 4),
-    Thursday(3, 5),
-    Friday(4, 6),
-    Saturday(5, 0),
-    Sunday(6, 1);
+enum class WeekDay(@StringRes private val nameStringId: Int) {
+    Monday(R.string.monday),
+    Tuesday(R.string.tuesday),
+    Wednesday(R.string.wednesdays),
+    Thursday(R.string.thursday),
+    Friday(R.string.friday),
+    Saturday(R.string.saturday),
+    Sunday(R.string.sunday);
 
-    fun getName(context: Context): String = when (weekDayNumber) {
-        Monday.weekDayNumber -> context.getString(R.string.monday)
-        Tuesday.weekDayNumber -> context.getString(R.string.tuesday)
-        Wednesday.weekDayNumber -> context.getString(R.string.wednesdays)
-        Thursday.weekDayNumber -> context.getString(R.string.thursday)
-        Friday.weekDayNumber -> context.getString(R.string.friday)
-        Saturday.weekDayNumber -> context.getString(R.string.saturday)
-        Sunday.weekDayNumber -> context.getString(R.string.sunday)
-        else -> throw IllegalArgumentException("Week day number is grater than 6: $this")
-    }
+    val weekDayNumber: Int get() = this.ordinal
+    val distanceFromFirstDayOfWeek: Int get() = (this.ordinal + 2) % 7
+
+    fun getName(context: Context): String = context.getString(this.nameStringId)
 }