Applescript to post webhooks triggered by newly completed iOS reminders in specific list(s)

completion_notifier.scpt

--Look for newly completed reminders (since the last check) and if there is a new one, make a webhook post with date, title, and list JSON values
--by Robert W. Leach, based on scripts by Craig Eley, Samantha Hilton, and Nick Morris

--This is not foolproof.  If you have more than 1 device you use to "complete" reminders and a reminder is completed while offline, after which, a reminder is completed from a second online device, the completion of the reminders in the offline device (once it comes online) will be missed.  However, it's done this way so that the script doesn't take forever looking at all reminders each time.
--Schedule it to run as frequently as you would like using osascript in a cron job and forget about it.  Run once manually in order to "allow" this script to run in the security settings by responding to the resulting dialog.
--Cron job every 30 minutes looking for newly completed reminders in list "MyReminders" example (execute `crontab -e` in terminal and enter): */30 * * * * osascript /Users/username/Scripts/completion_notifier.scpt "/Users/username/reminder_completions.txt" "http://maker.ifttt.com/trigger/myeventname/with/key/mykeyfromiftttmaker" -1 "MyReminders"
--Run without command line arguments to get the usage
--Command line argument examples:
-- "~/completed_reminders.txt" --No spaces allowed in file path. File does not need to pre-exist (but directories do).
-- "http://maker.ifttt.com/trigger/{event}/with/key/{key}" --Empty = don't make a webhook call (for testing)
-- -1 --Priority level cutoff. -1 = all.  1 = !, 2 = !!, 3 = !!!.  Considers only reminders with priority greater than this value.
-- "ToDo"  --Empty = all.  Example: "Grocery" "ToDo" "Work" "Home" - only provided lists are checked for newly completed items

on run argv
	set debug to false
	
	if (count of argv) is less than 3 then
		return "Usage: osascript completion_notifier.scpt \"/path/to/outfile.txt\" \"http://webhook_url\" priority_level [reminder list names...]" & linefeed & "Example: osascript completion_notifier.scpt \"/Users/jsmith/completed_reminders.txt\" \"http://test.com/webhook\" -1"
	end if
	
	set lastcompletionfile to item 1 of argv
	set webhookurl to item 2 of argv
	set prilev to item 3 of argv
	set liststocheck to {}
	if (count of argv) is equal to 4 then
		set liststocheck to {item 4 of argv}
	else if (count of argv) is greater than 3 then
		set liststocheck to {items 4 thru (count of argv) of argv}
	end if
	
	tell application "Reminders"
		
		set {startdate, firsttime} to my getStart(lastcompletionfile)
		
		if debug is true then
			display dialog "Starting datetime: " & startdate as text
		end if
		
		set output to ""
		set lastcompletion to startdate
		set mostrecentdate to ""
		set mostrecenttitle to ""
		set mostrecentlist to ""
		
		--Find entries completed today from each list
		set hasOne to false
		repeat with alist in every list
			set mylist to name of alist as text
			
			if (count of liststocheck) is 0 or liststocheck contains mylist then
				
				--set listid to id of alist as text
				
				if debug is true then
					--display dialog mylist & linefeed & listid
					display dialog mylist
				end if
				
				repeat with reminderObj in (reminders in alist whose (completed is true) and (completion date is greater than startdate) and (priority is greater than prilev))
					set nameObj to name of reminderObj
					set compDateObj to completion date of reminderObj
					set timeStr to date string of compDateObj & " at " & time string of compDateObj
					--set idObj to id of reminderObj
					
					if compDateObj is greater than lastcompletion then
						set hasOne to true
						set lastcompletion to compDateObj
						set mostrecentdate to timeStr
						set mostrecenttitle to nameObj
						set mostrecentlist to mylist
					end if
					
					if debug is true then
						display dialog idObj & tab & timeStr & tab & nameObj
					end if
					
					--set output to output & listid & tab & idObj & tab & timeStr & tab & mylist & tab & nameObj & linefeed
					set output to output & timeStr & tab & mylist & tab & nameObj & linefeed
					
					if debug is true then
						--display dialog listid & tab & idObj & tab & timeStr & tab & mylist & tab & nameObj
						display dialog timeStr & tab & mylist & tab & nameObj
					end if
					
				end repeat
			end if
		end repeat
		
		if hasOne is true then
			
			--save the newly completed items found this time so that next time, we can look for newer items
			set shellTxt to "echo \"" & output & "\" > " & lastcompletionfile
			
			if debug is true then
				display dialog shellTxt
			end if
			
			do shell script shellTxt
			
			
			
			--Make the webhook call (if the webhookurl is not an empty string)
			if webhookurl is not "" then
				
				--Use this example to send json data
				--set shellScript to "curl -X POST --data-urlencode 'payload={\"channel\": \"#general\", \"username\": \"Completion Notifier Bot\", \"icon_emoji\": \":ghost:\"}' " & webhookurl
				set jsonoption to "--data-urlencode 'payload={\"value1\": \"" & mostrecentdate & "\", \"value2\": \"" & mostrecenttitle & "\", \"value3\": \"" & mostrecentlist & "\"}'"
				
				set shellTxt to "curl -X POST " & jsonoption & " \"" & webhookurl & "\" > /dev/null"
				
				if debug is true then
					display dialog shellTxt
				end if
				
				do shell script shellTxt
			end if
			
		else
			--Save the date this was run so it can be parsed later the next time it's run
			if firsttime is true then
				set shellTxt to "echo \"" & startdate & tab & "initial run" & tab & "no completed reminders" & linefeed & "\" > " & lastcompletionfile
				
				if debug is true then
					display dialog shellTxt
				end if
				
				do shell script shellTxt
			end if
			
			if debug is true then
				display dialog "Nothing is newly completed"
			end if
		end if
		
	end tell
end run

--Takes the file containing the last determined most recent completion date (since the last time this script ran).
--Returns from the file, the most recent reminder completion date and a boolean indicating whether write an initial start record into the file
on getStart(lastcompletionfile)
	set startdate to the current date
	set checkscript to "if [ -e \"`eval echo " & lastcompletionfile & "`\" ]; then echo yes; else echo no; fi"
	--display dialog checkscript
	set fileisthere to first paragraph of (do shell script checkscript)
	--display dialog lastcompletionfile & " exists? [" & fileisthere & "]"
	set gotone to false
	if fileisthere is equal to "yes" then
		set lastdate to missing value
		set datescript to "cut -f 3 " & "\"`eval echo " & lastcompletionfile & "`\""
		--display dialog datescript
		set datelines to paragraphs of (do shell script "cut -f 1 " & "\"`eval echo " & lastcompletionfile & "`\"")
		repeat with adateline in datelines
			--display dialog "Checking [" & adateline & "]"
			try
				set tmpdate to date adateline
				if lastdate is missing value or tmpdate is greater than lastdate then
					set lastdate to tmpdate
					set gotone to true
					--display dialog "Later: " & lastdate as text
				end if
			end try
		end repeat
		if gotone is true then
			--display dialog "Setting start date: " & lastdate as text
			set startdate to lastdate
		end if
	end if
	--display dialog "Returning start date: " & startdate as text
	return {startdate, not gotone}
end getStart