Added support for cross-timezone clients

backend/db.py

@@ -1,12 +1,14 @@
 #-*- coding: utf-8 -*-
 
+from datetime import datetime
 from sqlite3 import Connection, Row
 from threading import current_thread
+from time import time
 from typing import Union
 
 from flask import g
 
-__DATABASE_VERSION__ = 1
+__DATABASE_VERSION__ = 2
 
 class Singleton(type):
 	_instances = {}
@@ -67,7 +69,18 @@ def migrate_db(current_db_version: int) -> None:
 	"""
 	print('Migrating database to newer version...')
 	cursor = get_db()
-		
+	if current_db_version == 1:
+		# V1 -> V2
+		t = time()
+		utc_offset = datetime.fromtimestamp(t) - datetime.utcfromtimestamp(t)
+		reminders = cursor.execute("SELECT time, id FROM reminders;").fetchall()
+		new_reminders = []
+		new_reminders_append = new_reminders.append
+		for reminder in reminders:
+			new_reminders_append([round((datetime.fromtimestamp(reminder[0]) - utc_offset).timestamp()), reminder[1]])
+		cursor.executemany("UPDATE reminders SET time = ? WHERE id = ?;", new_reminders)
+		__DATABASE_VERSION__ = 2
+
 	return
 
 def setup_db() -> None:

backend/reminders.py

@@ -29,7 +29,7 @@ def _find_next_time(
 ) -> int:
 	td = relativedelta(**{repeat_quantity: repeat_interval})
 	new_time = datetime.fromtimestamp(original_time)
-	current_time = datetime.fromtimestamp(epoch_time())
+	current_time = datetime.fromtimestamp(datetime.utcnow().timestamp())
 	while new_time <= current_time:
 		new_time += td
 	return int(new_time.timestamp())
@@ -76,7 +76,7 @@ class ReminderHandler():
 
 	def _handle(self) -> None:
 		while not self.stop:
-			if self.next_reminder and self.next_reminder <= epoch_time():
+			if self.next_reminder and self.next_reminder <= datetime.utcnow().timestamp():
 				with self.context():
 					cursor = get_db(dict)
 					# Get all reminders for the timestamp
@@ -182,7 +182,7 @@ class Reminder:
 
 		Args:
 			title (str): The new title of the entry. Defaults to None.
-			time (int): The new epoch timestamp the the reminder should be send. Defaults to None.
+			time (int): The new UTC epoch timestamp the the reminder should be send. Defaults to None.
 			notification_service (int): The new id of the notification service to use to send the reminder. Defaults to None.
 			text (str, optional): The new body of the reminder. Defaults to None.
 
@@ -198,10 +198,11 @@ class Reminder:
 			raise InvalidKeyValue('repeat_interval', repeat_interval)
 		repeated_reminder = repeat_quantity is not None and repeat_interval is not None
 
-		if not repeated_reminder:
-			if time < epoch_time():
-				raise InvalidTime
-		time = round(time)
+		if time is not None:
+			if not repeated_reminder:
+				if time < datetime.utcnow().timestamp():
+					raise InvalidTime
+			time = round(time)
 
 		# Get current data and update it with new values
 		data = self.get()
@@ -355,7 +356,7 @@ class Reminders:
 
 		Args:
 			title (str): The title of the entry
-			time (int): The epoch timestamp the the reminder should be send.
+			time (int): The UTC epoch timestamp the the reminder should be send.
 			notification_service (int): The id of the notification service to use to send the reminder.
 			text (str, optional): The body of the reminder. Defaults to ''.
 			repeat_quantity (Literal["year", "month", "week", "day", "hours", "minutes"], optional): The quantity of the repeat specified for the reminder. Defaults to None.
@@ -364,7 +365,7 @@ class Reminders:
 		Returns:
 			dict: The info about the reminder
 		"""
-		if time < epoch_time():
+		if time < datetime.utcnow().timestamp():
 			raise InvalidTime
 		time = round(time)
 

frontend/api.py

@@ -401,7 +401,7 @@ def api_reminders_list():
 			Description: Add a reminder
 			Parameters (body (content-type: application/json)):
 				title (required): the title of the reminder
-				time (required): the epoch timestamp that the reminder should be sent at
+				time (required): the UTC epoch timestamp that the reminder should be sent at
 				notification_service (required): the id of the notification service to use to send the notification
 				text: the body of the reminder
 				repeat_quantity ('year', 'month', 'week', 'day', 'hours', 'minutes'): The quantity of the repeat_interval
@@ -481,7 +481,7 @@ def api_get_reminder(r_id: int):
 			Description: Edit the reminder
 			Parameters (body (content-type: application/json)):
 				title: The new title of the entry.
-				time: The new epoch timestamp the the reminder should be send.
+				time: The new UTC epoch timestamp the the reminder should be send.
 				notification_service: The new id of the notification service to use to send the reminder.
 				text: The new body of the reminder.
 				repeat_quantity ('year', 'month', 'week', 'day', 'hours', 'minutes'): The quantity of the repeat_interval

frontend/static/js/add.js

@@ -20,7 +20,7 @@ function addReminder() {
 	
 	const data = {
 		'title': inputs.title.value,
-		'time': new Date(inputs.time.value).getTime() / 1000,
+		'time': (new Date(inputs.time.value) / 1000) + (new Date(inputs.time.value).getTimezoneOffset() * 60),
 		'notification_service': inputs.notification_service.value,
 		'text': inputs.text.value
 	};

frontend/static/js/edit.js

@@ -18,7 +18,7 @@ function editReminder() {
 	const id = document.getElementById('edit-form').dataset.id;
 	const data = {
 		'title': edit_inputs.title.value,
-		'time': new Date(edit_inputs.time.value).getTime() / 1000,
+		'time': (new Date(edit_inputs.time.value) / 1000) + (new Date(edit_inputs.time.value).getTimezoneOffset() * 60),
 		'notification_service': edit_inputs.notification_service.value,
 		'text': edit_inputs.text.value,
 		'repeat_quantity': null,
@@ -67,9 +67,10 @@ function showEdit(id) {
 	.then(json => {
 		edit_inputs.title.value = json.result.title;
 
-		edit_inputs.time.value = new Date(
+		var trigger_date = new Date(
 			(json.result.time + new Date(json.result.time * 1000).getTimezoneOffset() * -60) * 1000
-		).toISOString().slice(0, 16);
+		);
+		edit_inputs.time.value = trigger_date.toLocaleString('en-CA').slice(0,10) + 'T' + trigger_date.toTimeString().slice(0,5);
 		edit_inputs.notification_service.value = json.result.notification_service;
 
 		if (json.result['repeat_interval'] === null) {

frontend/static/js/reminders.js

@@ -13,7 +13,8 @@ function fillTable(result) {
 		entry.appendChild(title);
 
 		const time = document.createElement('p');
-		var d = new Date(reminder.time * 1000);
+		var offset = new Date(reminder.time * 1000).getTimezoneOffset() * -60;
+		var d = new Date((reminder.time + offset) * 1000);
 		var formatted_date = d.toLocaleString('en-CA').slice(0,10) + ' ' + d.toTimeString().slice(0,5);
 		if (reminder.repeat_interval !== null) {
 			if (reminder.repeat_interval === 1) {