Percy Rover Image Grabber

This is a really rough script written in PHP.
It's probably poorly written*, but it does work.. as tested on a Raspberry Pi 4B and a ubuntu1~16.04.12 server.
Will update the code when I get more free time.

Note that you should use the Mars2020 site while choosing what you want to download, as this doesn't grab what options are avaliable (yet?).
This script should be seen as a tool/aid rather than a replacement.

Syntax:

Arguments can be added in any order. php mars2020.php (Cam-select, raw/color/vframes, sol#)

e.g: php mars2020.php raw HNAV sol259

CAM-Select, replace with any of the following short codes:

• RDLC - Rover Down-Look Camera
• RULC - Rover Up-Look Camera
• DDLC - Descent Stage Down-Look Camera
• PULCB - Parachute Up-Look Camera B
• PULCA - Parachute Up-Look Camera A
• MZR - Mastcam-Z-Right
• MZL - Mastcam-Z-Left
• RHR - Rear Hazcam Right
• RHL - Rear Hazcam Left
• FHR - Front Hazcam Right
• FHL - Front Hazcam Left
• NCR - Navigation Camera Right
• NCL - Navigation Camera Left

New Cameras added Nov 13 2021

• SKYC - MEDIA SkyCam
• PIXL - PIXL Micro Context Camera
• SWAT - SHERLOC - WATSON
• SIMGR - SHERLOC Contect Imager
• SCMI - SuperCam Remote Micro Imager
• LVSC - Lander Vision System Camera
• SCS - Sample Caching System (CacheCam)
• HNAV - Navigation Camera
• HCOL - Color Camera

I tried to make the camera codes as simple as possible, if you have any suggestions for clarity / simplicity please let me know in Issues and I'll gladly take a look.

Notes:

• raw/color is the processing mode, raw is default if not defined.
• NEW: vframes can be specified to get video frames! This overwrites the raw/color options as it uses the same filter in NASA's JSON url.
• sol# is the sol you are requesting images from.
• You can specifiy any argument in any postion. All are optional except camera names, use ALL to grab all cams.
• 'probably poorly written' in the sense that I'm learning PHP and there are a few things that may have the room for optimization.

https://mars.nasa.gov/mars2020/multimedia/raw-images/

To-do:

• Allow more flexibility with options (E.g select images per page if possible, and custom page count)
• Add a way to select ALL cameras (Good for getting all of the latest SOL images!). - It works, but isn't pretty at the moment
• Add a way to select all SOLs (Intentionally this time!)
• Use CURL to download images? benefit to this is a timeout can be added.
• Fix sol checking to not allow downloads from sols with partial matches (E.g 'sol3' somehow downloads images from sol349)
• Add new filter to show movie frames (Nasa added &extended=product_id::ecv to options) This should work, appears to use the same variable as raw mode! So I added an option.
• Add a catch to prevent conflicting options (Raw Mode! If you specifiy color, raw, and vframes it shouldn't allow that in the future.)