From 36fb40b6bd4eeacb14b9a152ffb8e147227539f4 Mon Sep 17 00:00:00 2001
From: Danich Volk <dahnh33@gmail.com>
Date: Tue, 13 Jul 2021 21:18:55 +0300
Subject: [PATCH] CalendarPicker: + Added days, monthes and years range check +
 Added language selection * Fixed default language (it is English now)

---
 .../Controls/Inline/CalendarPicker.cs            | 16 +++++++++-------
 TelegramBotBase/Tools/Time.cs                    | 15 +++++++++++++++
 2 files changed, 24 insertions(+), 7 deletions(-)

diff --git a/TelegramBotBase/Controls/Inline/CalendarPicker.cs b/TelegramBotBase/Controls/Inline/CalendarPicker.cs
index 363b409..0fc968d 100644
--- a/TelegramBotBase/Controls/Inline/CalendarPicker.cs
+++ b/TelegramBotBase/Controls/Inline/CalendarPicker.cs
@@ -7,7 +7,7 @@ using System.Threading.Tasks;
 using TelegramBotBase.Base;
 using TelegramBotBase.Enums;
 using TelegramBotBase.Form;
-
+using TelegramBotBase.Tools;
 using static TelegramBotBase.Tools.Arrays;
 using static TelegramBotBase.Tools.Time;
 
@@ -36,15 +36,17 @@ namespace TelegramBotBase.Controls.Inline
         public bool EnableMonthView { get; set; } = true;
 
         public bool EnableYearView { get; set; } = true;
-
-        public CalendarPicker()
+        
+        public CalendarPicker(CultureInfo culture)
         {
             this.SelectedDate = DateTime.Today;
             this.VisibleMonth = DateTime.Today;
             this.FirstDayOfWeek = DayOfWeek.Monday;
-            this.Culture = new CultureInfo("de-de");
+            this.Culture = culture;
             this.PickerMode = eMonthPickerMode.day;
         }
+        
+        public CalendarPicker() : this(new CultureInfo("en-en")) { }
 
 
 
@@ -124,13 +126,13 @@ namespace TelegramBotBase.Controls.Inline
                 default:
 
                     int day = 0;
-                    if (result.RawData.StartsWith("d-") && int.TryParse(result.RawData.Split('-')[1], out day))
+                    if (result.RawData.StartsWith("d-") && TryParseDay(result.RawData.Split('-')[1], this.SelectedDate, out day))
                     {
                         this.SelectedDate = new DateTime(this.VisibleMonth.Year, this.VisibleMonth.Month, day);
                     }
 
                     int month = 0;
-                    if (result.RawData.StartsWith("m-") && int.TryParse(result.RawData.Split('-')[1], out month))
+                    if (result.RawData.StartsWith("m-") && TryParseMonth(result.RawData.Split('-')[1], out month))
                     {
                         this.SelectedDate = new DateTime(this.VisibleMonth.Year, month, 1);
                         this.VisibleMonth = this.SelectedDate;
@@ -142,7 +144,7 @@ namespace TelegramBotBase.Controls.Inline
                     }
 
                     int year = 0;
-                    if (result.RawData.StartsWith("y-") && int.TryParse(result.RawData.Split('-')[1], out year))
+                    if (result.RawData.StartsWith("y-") && TryParseYear(result.RawData.Split('-')[1], out year))
                     {
                         this.SelectedDate = new DateTime(year, SelectedDate.Month, SelectedDate.Day);
                         this.VisibleMonth = this.SelectedDate;
diff --git a/TelegramBotBase/Tools/Time.cs b/TelegramBotBase/Tools/Time.cs
index 66cdb85..b0cd93f 100644
--- a/TelegramBotBase/Tools/Time.cs
+++ b/TelegramBotBase/Tools/Time.cs
@@ -8,6 +8,21 @@ namespace TelegramBotBase.Tools
 {
     public static class Time
     {
+        public static bool TryParseDay(string src, DateTime currentDate, out int resultDay)
+        {
+            return int.TryParse(src, out resultDay) && resultDay >= 1 && resultDay <= DateTime.DaysInMonth(currentDate.Year, currentDate.Month);
+        }
+
+        public static bool TryParseMonth(string src, out int resultMonth)
+        {
+            return int.TryParse(src, out resultMonth) && resultMonth >= 1 && resultMonth <= 12;
+        }
+
+        public static bool TryParseYear(string src, out int resultYear)
+        {
+            return int.TryParse(src, out resultYear) && resultYear >= 0 && resultYear <= DateTime.MaxValue.Year;
+        }
+        
         public static DateTime StartOfWeek(this DateTime dt, DayOfWeek startOfWeek)
         {
             int diff = dt.DayOfWeek - startOfWeek;