feat: pick (absolute) date/time for reminders

ref: #214

Author: nofishonfriday

app/src/main/kotlin/org/fossify/calendar/activities/EventActivity.kt

@@ -844,22 +844,37 @@ class EventActivity : SimpleActivity() {
     }
 
     private fun showReminder1Dialog() {
-        showPickSecondsDialogHelper(mReminder1Minutes, showDuringDayOption = mIsAllDayEvent) {
-            mReminder1Minutes = if (it == -1 || it == 0) it else it / 60
+        showPickSecondsDialogHelper(
+            curMinutes = mReminder1Minutes,
+            showDuringDayOption = mIsAllDayEvent,
+            showAbsoluteDateTimeOption = true,
+            eventStartTS = mEvent.startTS
+        ) { seconds ->
+            mReminder1Minutes = if (seconds == -1 || seconds == 0) seconds else seconds / 60
             checkReminderTexts()
         }
     }
 
     private fun showReminder2Dialog() {
-        showPickSecondsDialogHelper(mReminder2Minutes, showDuringDayOption = mIsAllDayEvent) {
-            mReminder2Minutes = if (it == -1 || it == 0) it else it / 60
+        showPickSecondsDialogHelper(
+            curMinutes = mReminder2Minutes,
+            showDuringDayOption = mIsAllDayEvent,
+            showAbsoluteDateTimeOption = true,
+            eventStartTS = mEvent.startTS
+        ) { seconds ->
+            mReminder2Minutes = if (seconds == -1 || seconds == 0) seconds else seconds / 60
             checkReminderTexts()
         }
     }
 
     private fun showReminder3Dialog() {
-        showPickSecondsDialogHelper(mReminder3Minutes, showDuringDayOption = mIsAllDayEvent) {
-            mReminder3Minutes = if (it == -1 || it == 0) it else it / 60
+        showPickSecondsDialogHelper(
+            curMinutes = mReminder3Minutes,
+            showDuringDayOption = mIsAllDayEvent,
+            showAbsoluteDateTimeOption = true,
+            eventStartTS = mEvent.startTS
+        ) { seconds ->
+            mReminder3Minutes = if (seconds == -1 || seconds == 0) seconds else seconds / 60
             checkReminderTexts()
         }
     }

app/src/main/kotlin/org/fossify/calendar/activities/TaskActivity.kt

@@ -885,22 +885,37 @@ class TaskActivity : SimpleActivity() {
     }
 
     private fun showReminder1Dialog() {
-        showPickSecondsDialogHelper(mReminder1Minutes, showDuringDayOption = mIsAllDayTask) {
-            mReminder1Minutes = if (it == -1 || it == 0) it else it / 60
+        showPickSecondsDialogHelper(
+            curMinutes = mReminder1Minutes,
+            showDuringDayOption = mIsAllDayTask,
+            showAbsoluteDateTimeOption = true,
+            eventStartTS = mTask.startTS
+        ) { seconds ->
+            mReminder1Minutes = if (seconds == -1 || seconds == 0) seconds else seconds / 60
             updateReminderTexts()
         }
     }
 
     private fun showReminder2Dialog() {
-        showPickSecondsDialogHelper(mReminder2Minutes, showDuringDayOption = mIsAllDayTask) {
-            mReminder2Minutes = if (it == -1 || it == 0) it else it / 60
+        showPickSecondsDialogHelper(
+            curMinutes = mReminder2Minutes,
+            showDuringDayOption = mIsAllDayTask,
+            showAbsoluteDateTimeOption = true,
+            eventStartTS = mTask.startTS
+        ) { seconds ->
+            mReminder2Minutes = if (seconds == -1 || seconds == 0) seconds else seconds / 60
             updateReminderTexts()
         }
     }
 
     private fun showReminder3Dialog() {
-        showPickSecondsDialogHelper(mReminder3Minutes, showDuringDayOption = mIsAllDayTask) {
-            mReminder3Minutes = if (it == -1 || it == 0) it else it / 60
+        showPickSecondsDialogHelper(
+            curMinutes = mReminder3Minutes,
+            showDuringDayOption = mIsAllDayTask,
+            showAbsoluteDateTimeOption = true,
+            eventStartTS = mTask.startTS
+        ) { seconds ->
+            mReminder3Minutes = if (seconds == -1 || seconds == 0) seconds else seconds / 60
             updateReminderTexts()
         }
     }

app/src/main/kotlin/org/fossify/calendar/helpers/Constants.kt

@@ -53,6 +53,7 @@ const val LAST_VIEW = 6
 const val MONTHLY_DAILY_VIEW = 7
 
 const val REMINDER_OFF = -1
+const val REMINDER_USE_ABSOLUTE = -2
 const val REMINDER_DEFAULT_VALUE = "$REMINDER_OFF,$REMINDER_OFF,$REMINDER_OFF"
 
 const val OTHER_EVENT = 0