do not show the messages year, if it is the current one

app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Int.kt

@@ -0,0 +1,41 @@
+package com.simplemobiletools.smsmessenger.extensions
+
+import android.content.Context
+import android.text.format.DateFormat
+import android.text.format.DateUtils
+import android.text.format.Time
+import com.simplemobiletools.commons.extensions.getTimeFormat
+import java.util.*
+
+fun Int.formatTime(context: Context): String {
+    val cal = Calendar.getInstance(Locale.ENGLISH)
+    cal.timeInMillis = this * 1000L
+    return DateFormat.format("${context.getTimeFormat()}", cal).toString()
+}
+
+// if the given date is today, we show only the time. Else we show only the date
+fun Int.formatDateOrTime(context: Context): String {
+    val cal = Calendar.getInstance(Locale.ENGLISH)
+    cal.timeInMillis = this * 1000L
+
+    return if (DateUtils.isToday(this * 1000L)) {
+        DateFormat.format(context.getTimeFormat(), cal).toString()
+    } else {
+        var format = context.config.dateFormat
+        if (isThisYear()) {
+            format = format.replace("y", "").trim().trim('-').trim('.').trim('/')
+        }
+
+        DateFormat.format(format, cal).toString()
+    }
+}
+
+fun Int.isThisYear(): Boolean {
+    val time = Time()
+    time.set(this * 1000L)
+
+    val thenYear = time.year
+    time.set(System.currentTimeMillis())
+
+    return (thenYear == time.year)
+}