The idea I’ve had for a while

The idea I’ve had for a while now is a security bot. Have it sit in a protected shelter under my deck connected to a solar powered charging station. When a motion sensor on the property gets triggered, the bot goes to investigate. It shines a bright light on the area, takes pictures/video of anything that’s moving (uploading the images wirelessly somewhere)presents a voice challenge and attempts to do a facial match against an approved list of individuals. If the face match isn’t successful it can ask for a verbal security code or something and try to do a voice or verbal message match. If it can’t match an individual to an approved list, it can call my cell and I can take over the talking and see the video stream on my phone. For protection of itself, it would be heavy, sturdy (could take a moderate beating with a stick), possibly fast enough to get away, maybe armed with some sort of non-lethal deterrent, like if it gets picked up or tipped over it can release pepper spray or make a really loud noise or somethingmaybe shoot flames out...lol...maybe not that last one. It would have a GPS tracker built in to assist in recovery if needed. It could be programmed to perform periodic patrols and always be able to return to its shelter on its own for protection and charging. As time went on, any problems that came up would be addressed to make them less likely to happen againany parts that didn’t last would be replaced with parts that needed less maintenance or could self-maintain. Eventually, you could have a robot that lasted for years without any human intervention.