Initial commit

Assets/Scripts/Calendar.cs

@@ -0,0 +1,137 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using TMPro;
+using UnityEngine.UI;
+using System;
+
+public class Calendar : MonoBehaviour
+{
+    [SerializeField] private TextMeshProUGUI monthText;
+    [SerializeField] private Transform daysParent;
+    [SerializeField] private GameObject dayPrefab;
+
+    private DateTime _currentDate;
+
+    private List<GameObject> _currentMonthButtons =
+        new List<GameObject>();
+
+    private int _lastMonth = -1;
+    private int _lastYear = -1;
+
+    public void SetDate(DateTime newDate)
+    {
+        _currentDate = newDate;
+
+        if (_currentDate.Month != _lastMonth ||
+            _currentDate.Year != _lastYear)
+        {
+            _lastMonth = _currentDate.Month;
+            _lastYear = _currentDate.Year;
+
+            GenerateCalendar();
+        }
+        else
+        {
+            UpdateVisual();
+        }
+    }
+
+    private void GenerateCalendar()
+    {
+        for (int i = daysParent.childCount - 1; i >= 0; i--)
+        {
+            Destroy(daysParent.GetChild(i).gameObject);
+        }
+
+        _currentMonthButtons.Clear();
+
+        monthText.text = _currentDate.ToString("MMMM yyyy");
+
+        DateTime firstDay =
+            new DateTime(_currentDate.Year,
+                         _currentDate.Month,
+                         1);
+
+        int daysInMonth =
+            DateTime.DaysInMonth(_currentDate.Year,
+                                 _currentDate.Month);
+
+        int startDayOfWeek =
+            ((int)firstDay.DayOfWeek + 6) % 7;
+
+        DateTime prevMonth =
+            _currentDate.AddMonths(-1);
+
+        int daysInPrevMonth =
+            DateTime.DaysInMonth(prevMonth.Year,
+                                 prevMonth.Month);
+
+        for (int i = startDayOfWeek; i > 0; i--)
+        {
+            int dayNumber =
+                daysInPrevMonth - i + 1;
+
+            GameObject dayObj =
+                Instantiate(dayPrefab, daysParent);
+
+            dayObj.GetComponentInChildren<TextMeshProUGUI>()
+                  .text = dayNumber.ToString();
+
+            Image img =
+                dayObj.GetComponent<Image>();
+
+            img.color = Color.gray;
+        }
+
+        for (int day = 1; day <= daysInMonth; day++)
+        {
+            GameObject dayObj =
+                Instantiate(dayPrefab, daysParent);
+
+            dayObj.GetComponentInChildren<TextMeshProUGUI>()
+                  .text = day.ToString();
+
+            _currentMonthButtons.Add(dayObj);
+        }
+
+        UpdateVisual();
+    }
+
+    private void UpdateVisual()
+    {
+        int today = _currentDate.Day;
+
+        for (int i = 0; i < _currentMonthButtons.Count; i++)
+        {
+            Image img =
+                _currentMonthButtons[i]
+                .GetComponent<Image>();
+
+            Transform marker =
+                _currentMonthButtons[i]
+                .transform.Find("CurrentData");
+
+            int dayNumber = i + 1;
+
+            if (dayNumber < today)
+            {
+                img.color = Color.gray;
+                if (marker != null)
+                    marker.gameObject.SetActive(false);
+            }
+            else if (dayNumber == today)
+            {
+                img.color = Color.white;
+                if (marker != null)
+                    marker.gameObject.SetActive(true);
+            }
+            else
+            {
+                img.color = Color.white;
+                if (marker != null)
+                    marker.gameObject.SetActive(false);
+            }
+        }
+    }
+}