organizzazione progetto

2023-02-02 09:14:24 +01:00
parent b0687f78e5
commit 29fe0a6088
78 changed files with 1937 additions and 10 deletions
@@ -0,0 +1,100 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Egw.Core.Razor.Comp.Data
+{
+    public class WeekData
+    {
+        public int anno { get; set; } = DateTime.Today.Year;
+
+        public DateTime inizio { get; set; } = DateTime.Today;
+        public DateTime fine { get; set; } = DateTime.Today.AddDays(1);
+
+        public int weekNumber { get; set; } = 1;
+
+        /// <summary>
+        /// Calcola estremi settimana dato un giorno come lunedì-domenica
+        /// </summary>
+        /// <param name="dtRif"></param>
+        public WeekData(DateTime dtRif)
+        {
+            DayOfWeek day = CultureInfo.InvariantCulture.Calendar.GetDayOfWeek(dtRif);
+            // attenzione: è domenica = 0 --> in quel caso va portato a 7!!!
+            int numDay = day == DayOfWeek.Sunday ? 7 : (int)day;
+            this.weekNumber = GetIso8601WeekOfYear(dtRif);
+            this.inizio = dtRif.Date.AddDays(1 - numDay);
+            this.anno = inizio.Year;
+            this.fine = dtRif.Date.AddDays(7 - numDay);
+        }
+
+        /// <summary>
+        /// Calcola estremi settimana dato numero + anno
+        /// </summary>
+        /// <param name="numWeek"></param>
+        public WeekData(int year, int numWeek)
+        {
+            this.anno = year;
+            this.weekNumber = numWeek;
+            DateTime dtRif = FirstDateOfWeekISO8601(year, numWeek);
+            DayOfWeek day = CultureInfo.InvariantCulture.Calendar.GetDayOfWeek(dtRif);
+            this.inizio = dtRif.Date.AddDays(1 - (int)day);
+            this.fine = dtRif.Date.AddDays(7 - (int)day);
+        }
+
+        /// <summary>
+        /// Calcolo settimana dell'anno ISO 8601
+        /// 
+        /// This presumes that weeks start with Monday.
+        /// Week 1 is the 1st week of the year with a Thursday in it.
+        /// 
+        /// rif: https://stackoverflow.com/questions/11154673/get-the-correct-week-number-of-a-given-date
+        /// </summary>
+        /// <param name="time"></param>
+        /// <returns></returns>
+        public static int GetIso8601WeekOfYear(DateTime time)
+        {
+            // Seriously cheat.  If its Monday, Tuesday or Wednesday, then it'll 
+            // be the same week# as whatever Thursday, Friday or Saturday are,
+            // and we always get those right
+            DayOfWeek day = CultureInfo.InvariantCulture.Calendar.GetDayOfWeek(time);
+            if (day >= DayOfWeek.Monday && day <= DayOfWeek.Wednesday)
+            {
+                time = time.AddDays(3);
+            }
+
+            // Return the week of our adjusted day
+            return CultureInfo.InvariantCulture.Calendar.GetWeekOfYear(time, CalendarWeekRule.FirstFourDayWeek, DayOfWeek.Monday);
+        }
+
+        public static DateTime FirstDateOfWeekISO8601(int year, int weekOfYear)
+        {
+            DateTime jan1 = new DateTime(year, 1, 1);
+            int daysOffset = DayOfWeek.Thursday - jan1.DayOfWeek;
+
+            // Use first Thursday in January to get first week of the year as
+            // it will never be in Week 52/53
+            DateTime firstThursday = jan1.AddDays(daysOffset);
+            var cal = CultureInfo.CurrentCulture.Calendar;
+            int firstWeek = cal.GetWeekOfYear(firstThursday, CalendarWeekRule.FirstFourDayWeek, DayOfWeek.Monday);
+
+            var weekNum = weekOfYear;
+            // As we're adding days to a date in Week 1,
+            // we need to subtract 1 in order to get the right date for week #1
+            if (firstWeek == 1)
+            {
+                weekNum -= 1;
+            }
+
+            // Using the first Thursday as starting week ensures that we are starting in the right year
+            // then we add number of weeks multiplied with days
+            var result = firstThursday.AddDays(weekNum * 7);
+
+            // Subtract 3 days from Thursday to get Monday, which is the first weekday in ISO8601
+            return result.AddDays(-3);
+        }
+    }
+}