gistfile1.txt

#!/bin/sh

APIKEY=
LOG=/sdcard/Tasker/log/syncthing-once.txt
EVENT_TIMEOUT=15

log() {
	printf '%s: %s\n' "$(date +'%b %d %H:%M:%S')" "$*" >> "$LOG"
}

millis() {
	date +'%s%3N'
}

mkdir -p "$(dirname "$LOG")"
date > /sdcard/Tasker/scripts/.sync_dummy.txt

# wait for service to start
retries=10
while ! curl -s -L -k -X GET -H "X-API-Key: $APIKEY" "http://localhost:8384/rest/system/ping" >/dev/null
do
	if test $retries -eq 0; then
		log "Could not connect to REST endpoint"
		exit 100
	fi
    sleep 0.5
	retries=$((retries-1))
done

t0=$(millis)

# force rescan
curl -s -L -k -X POST -H "X-API-Key: $APIKEY" "http://localhost:8384/rest/db/scan" &

# if ! curl -s -L -k -X GET -H "X-API-Key: $APIKEY" "http://localhost:8384/rest/events?events=DeviceConnected&timeout=$EVENT_TIMEOUT"; then
# 	log "No devices connected after $EVENT_TIMEOUT seconds"
# 	exit 103
# else
# 	: "device connected after $(($(millis)-t0)) ms"
# fi

wait

id=0
while true; do
	date > /sdcard/Tasker/scripts/.sync_dummy.txt &
	response=$(curl -s -L -k -X GET -H "X-API-Key: $APIKEY" \
		"http://localhost:8384/rest/events?events=FolderCompletion&limit=1&timeout=$EVENT_TIMEOUT&since=$id")

	if test $? -eq 0
	then
		if echo "$response" | grep -q '"completion": *100,'
		then
			log "Sync completed after $(($(millis)-t0)) ms"
			break
		elif test "$response" != '[]'; then
			id=$(echo "$response" | awk -F: '/"id"/{gsub(/[ ,]/,"",$2); print $2}')
		fi
	else
		if ! curl -s -L -k -X GET -H "X-API-Key: $APIKEY" \
			"http://localhost:8384/rest/system/ping" >/dev/null
		then
			log "Service stopped unexpectedly after $(($(millis)-t0)) ms"
			exit 101
		fi

		if ! curl -s -L -k -X GET -H "X-API-Key: $APIKEY" \
			"http://localhost:8384/rest/system/connections" \
			| grep -q '"connected":.*true'
		then
			log "No devices connected after $(($(millis)-t0)) ms"
			exit 102
		fi
	fi
done