If it had a valid (known) filesystem, parted should have found it.
The partition SDA1 is still there but seems to have lost some header information such as filesystem type (which is EXT4).
How did you come to that conclusion ?.
It's entirely possible the whole partition has been trashed. You might need to use something like photorec or foremost to see if (some of) your files still exist.
BTW, when posting listings, use [code] tags as per above.