Fix expiry datepicker allowing all dates

vue2-datepicker expects a `disabled-date` function
rather than `not-before` and `not-after` dates.

This commit updates it so that we now provide
vue2-datepicker with a `disabled-date` function.

Signed-off-by: Gary Kim <gary@garykim.dev>

apps/files_sharing/src/components/SharingEntry.vue

@@ -95,8 +95,7 @@
 					value-type="format"
 					icon="icon-calendar-dark"
 					type="date"
-					:not-before="dateTomorrow"
-					:not-after="dateMaxEnforced"
+					:disabled-date="disabledDate"
 					@update:value="onExpirationChange">
 					{{ t('files_sharing', 'Enter a date') }}
 				</ActionInput>

apps/files_sharing/src/components/SharingEntryLink.vue

@@ -105,8 +105,7 @@
 				icon=""
 				type="date"
 				value-type="format"
-				:not-before="dateTomorrow"
-				:not-after="dateMaxEnforced">
+				:disabled-date="disabledDate">
 				<!-- let's not submit when picked, the user
 					might want to still edit or copy the password -->
 				{{ t('files_sharing', 'Enter a date') }}
@@ -231,8 +230,7 @@
 						value-type="format"
 						icon="icon-calendar-dark"
 						type="date"
-						:not-before="dateTomorrow"
-						:not-after="dateMaxEnforced"
+						:disabled-date="disabledDate"
 						@update:value="onExpirationChange">
 						{{ t('files_sharing', 'Enter a date') }}
 					</ActionInput>

apps/files_sharing/src/mixins/SharesMixin.js

@@ -300,5 +300,16 @@ export default {
 		debounceQueueUpdate: debounce(function(property) {
 			this.queueUpdate(property)
 		}, 500),
+
+		/**
+		 * Returns which dates are disabled for the datepicker
+		 * @param {Date} date date to check
+		 * @returns {boolean}
+		 */
+		disabledDate(date) {
+			const dateMoment = moment(date)
+			return (this.dateTomorrow && dateMoment.isBefore(this.dateTomorrow, 'day'))
+				|| (this.dateMaxEnforced && dateMoment.isSameOrAfter(this.dateMaxEnforced, 'day'))
+		},
 	},
 }