feat: Visually distinguish days with events

app/src/main/java/com/p_vacho/neat_calendar/activities/CalendarActivity.kt

@@ -12,10 +12,8 @@ import androidx.core.view.WindowInsetsCompat
 import androidx.recyclerview.widget.GridLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import com.p_vacho.neat_calendar.R
-import org.threeten.bp.LocalDate
 import org.threeten.bp.YearMonth
 import org.threeten.bp.format.TextStyle
-import java.time.temporal.WeekFields
 import java.util.Locale
 
 class CalendarActivity : AppCompatActivity() {
@@ -43,25 +41,28 @@ class CalendarActivity : AppCompatActivity() {
         val firstDayOfMonth = yearMonth.atDay(1)
         val daysInMonth = yearMonth.lengthOfMonth()
 
+        // TODO: Replace with an API call to obtain the events
+        val eventDays = setOf(3, 15, 20)
+
         // Get localized month name and year
         val monthYearText = "${yearMonth.month.getDisplayName(TextStyle.FULL, Locale.getDefault())} ${yearMonth.year}"
         tvMonthYear.text = monthYearText
 
         // Calculate the day of the week the month starts on (Monday as first day)
         val dayOfWeek = firstDayOfMonth.dayOfWeek.value // 1 (Monday) to 7 (Sunday)
-        val startOffset = (dayOfWeek - 1 + 7) % 7 // Shift Sunday (7) to the correct position for Monday start
+        val startOffset = (dayOfWeek - 1 + 7) % 7
 
         // Generate calendar days
-        val days = mutableListOf<String>()
+        val days = mutableListOf<Day>()
 
         // Add padding for days of the previous month
         for (i in 1..startOffset) {
-            days.add("") // Empty strings represent padding days
+            days.add(Day(dayNumber = ""))
         }
 
         // Add the actual days of the current month
         for (i in 1..daysInMonth) {
-            days.add(i.toString())
+            days.add(Day(dayNumber = i.toString(), hasEvents = eventDays.contains(i)))
         }
 
         // Set up RecyclerView
@@ -70,22 +71,37 @@ class CalendarActivity : AppCompatActivity() {
     }
 }
 
-class CalendarAdapter(private val days: List<String>) :
+data class Day(
+    val dayNumber: String, // Day of the month (e.g., "1", "2", ...)
+    val hasEvents: Boolean = false
+)
+
+class CalendarAdapter(private val days: List<Day>) :
     RecyclerView.Adapter<CalendarAdapter.DayViewHolder>() {
 
     class DayViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
-        val tvDay: TextView = itemView.findViewById(android.R.id.text1)
+        val tvDay: TextView = itemView.findViewById(R.id.tvDay)
     }
 
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): DayViewHolder {
         val view = LayoutInflater.from(parent.context)
-            .inflate(android.R.layout.simple_list_item_1, parent, false)
+            .inflate(R.layout.item_calendar_day, parent, false)
         return DayViewHolder(view)
     }
 
     override fun onBindViewHolder(holder: DayViewHolder, position: Int) {
-        holder.tvDay.text = days[position]
+        val day = days[position]
+
+        // Set the day number
+        holder.tvDay.text = day.dayNumber
+
+        // Visually indicate days with events
+        if (day.hasEvents) {
+            holder.tvDay.setBackgroundResource(R.drawable.event_indicator_background)
+        } else {
+            holder.tvDay.setBackgroundResource(android.R.color.transparent)
+        }
     }
 
     override fun getItemCount(): Int = days.size
-}
+}

app/src/main/res/drawable/event_indicator_background.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/event_indicator_color" />
+    <corners android:radius="20dp" />
+</shape>

app/src/main/res/values/colors.xml

@@ -5,4 +5,6 @@
 
     <color name="splash_light_background">#F5F5F5</color> <!-- Light gray -->
     <color name="splash_dark_background">#121212</color> <!-- Dark gray -->
+
+    <color name="event_indicator_color">#AA0035D0</color>
 </resources>