Add date utils

components/date_utils.coffee

@@ -0,0 +1,49 @@
+module.exports =
+  daysInMonth: (date) ->
+    (new Date(date.getFullYear(), date.getMonth() + 1, 0)).getDate()
+
+  firstWeekDay: (date) ->
+    (new Date(date.getFullYear(), date.getMonth() + 1, 1)).getDay()
+
+  monthInWords: (date) ->
+    switch (date.getMonth())
+      when 0  then 'January'
+      when 1  then 'February'
+      when 2  then 'March'
+      when 3  then 'April'
+      when 4  then 'May'
+      when 5  then 'June'
+      when 6  then 'July'
+      when 7  then 'August'
+      when 8  then 'September'
+      when 9  then 'October'
+      when 10 then 'November'
+      when 11 then 'December'
+
+  weekDayInWords: (day) ->
+    switch (day)
+      when 0 then 'Sunday'
+      when 1 then 'Monday'
+      when 2 then 'Tuesday'
+      when 3 then 'Wednesday'
+      when 4 then 'Thursday'
+      when 5 then 'Friday'
+      when 6 then 'Saturday'
+
+  addDays: (date, days) ->
+    newDate = @cloneDatetime(date)
+    newDate.setDate(date.getDate() + days)
+    newDate
+
+  addMonths: (date, months) ->
+    newDate = @cloneDatetime(date)
+    newDate.setMonth(date.getMonth() + months)
+    newDate
+
+  addYears: (date, years) ->
+    newDate = @cloneDatetime(date)
+    newDate.setFullYear(date.getFullYear() + years)
+    newDate
+
+  cloneDatetime: (date) ->
+    new Date(date.getTime())