Dates and their structs

src/date.rs

@@ -1,5 +1,88 @@
+pub const DAYS_IN_YEAR: f64 = 365.2425;
+
 pub struct Date {
-    year: u16,
+    year: Year,
-    month: u8,
+    month: Month,
-    day: u8,
+    day: Day,
+}
+
+struct Day(usize);
+enum Month {
+    January,
+    February,
+    March,
+    April,
+    May,
+    June,
+    July,
+    August,
+    September,
+    October,
+    November,
+    December,
+}
+struct Year(usize);
+enum WeekDay {
+    Sunday,
+    Monday,
+    Tuesday,
+    Wednesday,
+    Thursday,
+    Friday,
+    Saturday,
+}
+
+impl From<usize> for Day {
+    fn from(value: usize) -> Self {
+        Self(value)
+    }
+}
+
+impl From<usize> for Month {
+    fn from(value: usize) -> Self {
+        match value % 12 {
+            0 => Month::January,
+            1 => Month::February,
+            2 => Month::March,
+            3 => Month::April,
+            4 => Month::May,
+            5 => Month::June,
+            6 => Month::July,
+            7 => Month::August,
+            8 => Month::September,
+            9 => Month::October,
+            10 => Month::November,
+            11 => Month::December,
+            _ => Month::January,
+        }
+    }
+}
+
+impl From<usize> for Year {
+    fn from(value: usize) -> Self {
+        Self(value)
+    }
+}
+impl Year {
+    pub fn is_leap(&self) -> bool {
+        self.0 % 4 == 0 && (self.0 % 100 != 0 || self.0 % 400 == 0)
+    }
+    pub fn get_days(&self) -> Day {
+        { if self.is_leap() { 366 } else { 365 } }.into()
+    }
+}
+impl Month {
+    pub fn get_max_days(&self, leap: bool) -> usize {
+        match self {
+            Month::February => {
+                if leap {
+                    29
+                } else {
+                    28
+                }
+            }
+            Month::April | Month::June | Month::September | Month::November => 30,
+            _ => 31,
+        }
+    }
 }