Private one-way automatic photo upload solution?

I'm looking for something to automatically upload/sync photos from my phone to my PC or server. Anybody knows of something that could fit my use case? ​ My requirements: - upload only files older than some date - I just want new photos, not all the old stuff that I already have - don't reupload files I've deleted on the server/PC - I put the photos in different folders after putting them on the PC - private / open source / FOSS - I don't want for them to get in Google's (or some other company's) hands. ​ What I've tried: - syncthing - can't choose to upload stuff starting from a date, reuploads things I delete from the sync folder - NextCloud - doesn't have one-way upload feature ​ I've been thinking about writing something that runs periodically on my phone and just pushes the photos to some S3-compatible storage, and a PC component that pulls them. The problem is that without rooting you can't have reliable cron. Even if I would make it work with Termux somehow, Android could deny network access. I know that paid Dropbox can do exactly what I want, but l'm hesitant to give them access to all my photos.