I had a need for downloading all of my facebook photos. One way you can do this is by downloading a full copy of your facebook data. Unfortunately, this only includes the low-resolution version of your photos. There are some other options online, but most looked pretty sketchy.
The Graph API uses oauth for authentication, but in this case, I wanted to write a simple command line application so the oauth flow seemed a little more than I wanted to do. To get around this I used facebook’s Graph API Explorer to manually get the access token and then paste it directly into the app. This introduces a few additional steps, but for my one-off use case, this was acceptable. It also eliminates the need for creating a new “facebook app.”
I have played around with go only a little before so it took a little longer as I was rediscovering everything, but a little bit later I had a working app that downloaded the high-resolution photos from facebook that I was looking for.
I really like the fact that this whole app is really just one go file. You can see this in the following gist.
Disclaimer: I haven’t paid too much attention to the details of go’s memory handling in this app. I wouldn’t be surprised if the above doesn’t properly handle memory in all cases.