DateUtil lints

app/src/main/java/info/nightscout/androidaps/activities/HistoryBrowseActivity.kt

@@ -150,7 +150,7 @@ class HistoryBrowseActivity : NoSplashAppCompatActivity() {
 
         binding.date.setOnClickListener {
             MaterialDatePicker.Builder.datePicker()
-                .setSelection(dateUtil.timeStampToUtcDateMilis(overviewData.fromTime))
+                .setSelection(dateUtil.timeStampToUtcDateMillis(overviewData.fromTime))
                 .setTheme(R.style.DatePicker)
                 .build()
                 .apply {

automation/src/main/java/info/nightscout/androidaps/plugins/general/automation/elements/InputDateTime.kt

@@ -40,7 +40,7 @@ class InputDateTime(private val rh: ResourceHelper, private val dateUtil: DateUt
                             getFragmentManager(root.context)?.let { fm ->
                                 MaterialDatePicker.Builder.datePicker()
                                     .setTheme(R.style.DatePicker)
-                                    .setSelection(dateUtil.timeStampToUtcDateMilis(value))
+                                    .setSelection(dateUtil.timeStampToUtcDateMillis(value))
                                     .build()
                                     .apply {
                                         addOnPositiveButtonClickListener { selection ->

core/src/main/java/info/nightscout/androidaps/data/ProfileSealed.kt

@@ -376,7 +376,7 @@ sealed class ProfileSealed(
             var elapsedSec = 0
             array.shiftBlock(multiplier, timeshift).forEach {
                 if (elapsedSec != 0) sb.append("\n")
-                sb.append(dateUtil.format_HH_MM(elapsedSec))
+                sb.append(dateUtil.formatHHMM(elapsedSec))
                     .append("    ")
                     .append(format.format(it.amount * multiplier))
                     .append(" $units")
@@ -389,7 +389,7 @@ sealed class ProfileSealed(
             var elapsedSec = 0
             array.shiftTargetBlock(timeshift).forEach {
                 if (elapsedSec != 0) sb.append("\n")
-                sb.append(dateUtil.format_HH_MM(elapsedSec))
+                sb.append(dateUtil.formatHHMM(elapsedSec))
                     .append("    ")
                     .append(format.format(it.lowTarget))
                     .append(" - ")

core/src/main/java/info/nightscout/androidaps/dialogs/DialogFragmentWithDate.kt

@@ -81,7 +81,7 @@ abstract class DialogFragmentWithDate : DaggerDialogFragment() {
         eventDateView = view.findViewById(R.id.eventdate) as TextView?
         eventDateView?.text = dateUtil.dateString(eventTime)
         eventDateView?.setOnClickListener {
-            val selection = dateUtil.timeStampToUtcDateMilis(eventTime)
+            val selection = dateUtil.timeStampToUtcDateMillis(eventTime)
             MaterialDatePicker.Builder.datePicker()
                 .setTheme(R.style.DatePicker)
                 .setSelection(selection)

core/src/main/java/info/nightscout/androidaps/dialogs/ProfileViewerDialog.kt

@@ -231,7 +231,7 @@ class ProfileViewerDialog : DaggerDialogFragment() {
             val val1 = profile1.getBasalTimeFromMidnight(hour * 60 * 60)
             val val2 = profile2.getBasalTimeFromMidnight(hour * 60 * 60)
             if (val1 != prev1 || val2 != prev2) {
-                s.append(formatColors(dateUtil.format_HH_MM(hour * 60 * 60), val1, val2, DecimalFormat("0.00"), " " + rh.gs(R.string.profile_ins_units_per_hour)))
+                s.append(formatColors(dateUtil.formatHHMM(hour * 60 * 60), val1, val2, DecimalFormat("0.00"), " " + rh.gs(R.string.profile_ins_units_per_hour)))
                 s.append("<br>")
             }
             prev1 = val1
@@ -254,7 +254,7 @@ class ProfileViewerDialog : DaggerDialogFragment() {
             val val1 = profile1.getIcTimeFromMidnight(hour * 60 * 60)
             val val2 = profile2.getIcTimeFromMidnight(hour * 60 * 60)
             if (val1 != prev1 || val2 != prev2) {
-                s.append(formatColors(dateUtil.format_HH_MM(hour * 60 * 60), val1, val2, DecimalFormat("0.0"), " " + rh.gs(R.string.profile_carbs_per_unit)))
+                s.append(formatColors(dateUtil.formatHHMM(hour * 60 * 60), val1, val2, DecimalFormat("0.0"), " " + rh.gs(R.string.profile_carbs_per_unit)))
                 s.append("<br>")
             }
             prev1 = val1
@@ -272,7 +272,7 @@ class ProfileViewerDialog : DaggerDialogFragment() {
             val val1 = Profile.fromMgdlToUnits(profile1.getIsfMgdlTimeFromMidnight(hour * 60 * 60), units)
             val val2 = Profile.fromMgdlToUnits(profile2.getIsfMgdlTimeFromMidnight(hour * 60 * 60), units)
             if (val1 != prev1 || val2 != prev2) {
-                s.append(formatColors(dateUtil.format_HH_MM(hour * 60 * 60), val1, val2, DecimalFormat("0.0"), units.asText + " " + rh.gs(R.string.profile_per_unit)))
+                s.append(formatColors(dateUtil.formatHHMM(hour * 60 * 60), val1, val2, DecimalFormat("0.0"), units.asText + " " + rh.gs(R.string.profile_per_unit)))
                 s.append("<br>")
             }
             prev1 = val1
@@ -293,8 +293,8 @@ class ProfileViewerDialog : DaggerDialogFragment() {
             val val1h = profile1.getTargetHighMgdlTimeFromMidnight(hour * 60 * 60)
             val val2l = profile2.getTargetLowMgdlTimeFromMidnight(hour * 60 * 60)
             val val2h = profile2.getTargetHighMgdlTimeFromMidnight(hour * 60 * 60)
-            val txt1 = dateUtil.format_HH_MM(hour * 60 * 60) + " " + Profile.toUnitsString(val1l, val1l * Constants.MGDL_TO_MMOLL, units) + " - " + Profile.toUnitsString(val1h, val1h * Constants.MGDL_TO_MMOLL, units) + " " + units.asText
+            val txt1 = dateUtil.formatHHMM(hour * 60 * 60) + " " + Profile.toUnitsString(val1l, val1l * Constants.MGDL_TO_MMOLL, units) + " - " + Profile.toUnitsString(val1h, val1h * Constants.MGDL_TO_MMOLL, units) + " " + units.asText
-            val txt2 = dateUtil.format_HH_MM(hour * 60 * 60) + " " + Profile.toUnitsString(val2l, val2l * Constants.MGDL_TO_MMOLL, units) + " - " + Profile.toUnitsString(val2h, val2h * Constants.MGDL_TO_MMOLL, units) + " " + units.asText
+            val txt2 = dateUtil.formatHHMM(hour * 60 * 60) + " " + Profile.toUnitsString(val2l, val2l * Constants.MGDL_TO_MMOLL, units) + " - " + Profile.toUnitsString(val2h, val2h * Constants.MGDL_TO_MMOLL, units) + " " + units.asText
             if (val1l != prev1l || val1h != prev1h || val2l != prev2l || val2h != prev2h) {
                 s.append(formatColors(txt1, txt2))
                 s.append("<br>")

core/src/test/java/info/nightscout/androidaps/data/ProfileTest.kt

@@ -78,7 +78,7 @@ class ProfileTest : TestBase() {
 //        JSONAssert.assertEquals(JSONObject(okProfile), p.toPureNsJson(dateUtil), false)
         Assert.assertEquals(5.0, p.dia, 0.01)
 //        Assert.assertEquals(TimeZone.getTimeZone("UTC"), p.timeZone)
-        Assert.assertEquals("00:30", dateUtil.format_HH_MM(30 * 60))
+        Assert.assertEquals("00:30", dateUtil.formatHHMM(30 * 60))
         val c = Calendar.getInstance()
         c[Calendar.HOUR_OF_DAY] = 1
         c[Calendar.MINUTE] = 0

shared/src/main/java/info/nightscout/androidaps/utils/DateUtil.kt

@@ -1,6 +1,8 @@
 package info.nightscout.androidaps.utils
 
 import android.content.Context
+import android.os.Build
+import androidx.annotation.RequiresApi
 import androidx.collection.LongSparseArray
 import info.nightscout.androidaps.annotations.OpenForTesting
 import info.nightscout.androidaps.interfaces.ResourceHelper
@@ -10,6 +12,7 @@ import org.apache.commons.lang3.time.DateUtils.isSameDay
 import org.joda.time.DateTime
 import org.joda.time.format.DateTimeFormat
 import org.joda.time.format.ISODateTimeFormat
+import java.security.SecureRandom
 import java.text.DateFormat
 import java.text.DecimalFormat
 import java.text.DecimalFormatSymbols
@@ -23,7 +26,6 @@ import java.util.regex.Pattern
 import java.util.stream.Collectors
 import javax.inject.Inject
 import javax.inject.Singleton
-import kotlin.math.abs
 import kotlin.math.ceil
 import kotlin.math.floor
 
@@ -38,7 +40,7 @@ class DateUtil @Inject constructor(private val context: Context) {
     /**
      * The date format in iso.
      */
-    @Suppress("PrivatePropertyName")
+    @Suppress("PrivatePropertyName", "SpellCheckingInspection")
     private val FORMAT_DATE_ISO_OUT = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"
 
     /**
@@ -66,12 +68,14 @@ class DateUtil @Inject constructor(private val context: Context) {
         return f.format(date)
     }
 
+    @Suppress("SpellCheckingInspection")
     fun toISOAsUTC(timestamp: Long): String {
         val format = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'0000Z'", Locale.US)
         format.timeZone = TimeZone.getTimeZone("UTC")
         return format.format(timestamp)
     }
 
+    @Suppress("SpellCheckingInspection")
     fun toISONoZone(timestamp: Long): String {
         val format = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.US)
         format.timeZone = TimeZone.getDefault()
@@ -90,13 +94,13 @@ class DateUtil @Inject constructor(private val context: Context) {
     fun toSeconds(hh_colon_mm: String): Int {
         val p = Pattern.compile("(\\d+):(\\d+)( a.m.| p.m.| AM| PM|AM|PM|)")
         val m = p.matcher(hh_colon_mm)
-        var retval = 0
+        var retVal = 0
         if (m.find()) {
-            retval = SafeParse.stringToInt(m.group(1)) * 60 * 60 + SafeParse.stringToInt(m.group(2)) * 60
+            retVal = SafeParse.stringToInt(m.group(1)) * 60 * 60 + SafeParse.stringToInt(m.group(2)) * 60
-            if ((m.group(3) == " a.m." || m.group(3) == " AM" || m.group(3) == "AM") && m.group(1) == "12") retval -= 12 * 60 * 60
+            if ((m.group(3) == " a.m." || m.group(3) == " AM" || m.group(3) == "AM") && m.group(1) == "12") retVal -= 12 * 60 * 60
-            if ((m.group(3) == " p.m." || m.group(3) == " PM" || m.group(3) == "PM") && m.group(1) != "12") retval += 12 * 60 * 60
+            if ((m.group(3) == " p.m." || m.group(3) == " PM" || m.group(3) == "PM") && m.group(1) != "12") retVal += 12 * 60 * 60
         }
-        return retval
+        return retVal
     }
 
     fun dateString(mills: Long): String {
@@ -174,20 +178,20 @@ class DateUtil @Inject constructor(private val context: Context) {
 
     fun minAgo(rh: ResourceHelper, time: Long?): String {
         if (time == null) return ""
-        val mins = ((now() - time) / 1000 / 60).toInt()
+        val minutes = ((now() - time) / 1000 / 60).toInt()
-        return rh.gs(R.string.minago, mins)
+        return rh.gs(R.string.minago, minutes)
     }
 
     fun minAgoShort(time: Long?): String {
         if (time == null) return ""
-        val mins = ((time - now()) / 1000 / 60).toInt()
+        val minutes = ((time - now()) / 1000 / 60).toInt()
-        return (if (mins > 0) "+" else "") + mins
+        return (if (minutes > 0) "+" else "") + minutes
     }
 
     fun minAgoLong(rh: ResourceHelper, time: Long?): String {
         if (time == null) return ""
-        val mins = ((now() - time) / 1000 / 60).toInt()
+        val minutes = ((now() - time) / 1000 / 60).toInt()
-        return rh.gs(R.string.minago_long, mins)
+        return rh.gs(R.string.minago_long, minutes)
     }
 
     fun hourAgo(time: Long, rh: ResourceHelper): String {
@@ -198,12 +202,12 @@ class DateUtil @Inject constructor(private val context: Context) {
     fun dayAgo(time: Long, rh: ResourceHelper, round: Boolean = false): String {
         var days = (now() - time) / 1000.0 / 60 / 60 / 24
         if (round) {
-            if (now() > time) {
+            return if (now() > time) {
                 days = ceil(days)
-                return rh.gs(R.string.days_ago_round, days)
+                rh.gs(R.string.days_ago_round, days)
             } else {
                 days = floor(days)
-                return rh.gs(R.string.in_days_round, days)
+                rh.gs(R.string.in_days_round, days)
             }
         }
         return if (now() > time)
@@ -255,11 +259,6 @@ class DateUtil @Inject constructor(private val context: Context) {
         return n
     }
 
-    fun isCloseToNow(date: Long): Boolean {
-        val diff = abs(date - now())
-        return diff < T.mins(2L).msecs()
-    }
-
     fun isOlderThan(date: Long, minutes: Long): Boolean {
         val diff = now() - date
         return diff > T.mins(minutes).msecs()
@@ -277,7 +276,7 @@ class DateUtil @Inject constructor(private val context: Context) {
 
     fun isSameDayGroup(timestamp1: Long, timestamp2: Long): Boolean {
         val now = now()
-        if (timestamp1 < now && timestamp2 > now || timestamp1 > now && timestamp2 < now)
+        if (now in (timestamp1 + 1) until timestamp2 || now in (timestamp2 + 1) until timestamp1)
             return false
         return isSameDay(Date(timestamp1), Date(timestamp2))
     }
@@ -376,13 +375,14 @@ class DateUtil @Inject constructor(private val context: Context) {
         return thisDf.format(x)
     }
 
-    fun format_HH_MM(timeAsSeconds: Int): String {
+    fun formatHHMM(timeAsSeconds: Int): String {
         val hour = timeAsSeconds / 60 / 60
         val minutes = (timeAsSeconds - hour * 60 * 60) / 60
         val df = DecimalFormat("00")
         return df.format(hour.toLong()) + ":" + df.format(minutes.toLong())
     }
 
+    @RequiresApi(Build.VERSION_CODES.O)
     fun timeZoneByOffset(offsetInMilliseconds: Long): TimeZone =
         TimeZone.getTimeZone(
             if (offsetInMilliseconds == 0L) ZoneId.of("UTC")
@@ -394,7 +394,7 @@ class DateUtil @Inject constructor(private val context: Context) {
                 .firstOrNull() ?: ZoneId.of("UTC")
         )
 
-    fun timeStampToUtcDateMilis(timestamp: Long): Long {
+    fun timeStampToUtcDateMillis(timestamp: Long): Long {
         val current = Calendar.getInstance().apply { timeInMillis = timestamp }
         return Calendar.getInstance().apply {
             set(Calendar.YEAR, current.get(Calendar.YEAR))
@@ -403,8 +403,8 @@ class DateUtil @Inject constructor(private val context: Context) {
         }.timeInMillis
     }
 
-    fun mergeUtcDateToTimestamp(timestamp: Long, dateUtcMilis: Long): Long {
+    fun mergeUtcDateToTimestamp(timestamp: Long, dateUtcMillis: Long): Long {
-        val selected = Calendar.getInstance().apply { timeInMillis = dateUtcMilis }
+        val selected = Calendar.getInstance().apply { timeInMillis = dateUtcMillis }
         return Calendar.getInstance().apply {
             timeInMillis = timestamp
             set(Calendar.YEAR, selected.get(Calendar.YEAR))
@@ -425,7 +425,8 @@ class DateUtil @Inject constructor(private val context: Context) {
     companion object {
 
         private val timeStrings = LongSparseArray<String>()
-        private var seconds: Int = (Math.random() * 59.0).toInt()
+        private var seconds: Int = (SecureRandom().nextDouble() * 59.0).toInt()
+
         // singletons to avoid repeated allocation
         private var dfs: DecimalFormatSymbols? = null
         private var df: DecimalFormat? = null