This is the worst thing could happen!

I was driving today to work and i turn the right turn singnal it clicks faster than usual.
I turn left on, it is normal, only the right.
I got to work and got out the car found out the right turn lights all out, that's why it went crazy i thought.
I left it in the parking lot and went to work thinking to take it to the dealer tomorrow.
Someone called me at 8pm and told me that my lights are on.
I went out, Geeeeee. the right headlight and right break light are on.(not possible with car off!)?
try to use remote, not working. Manual unlock the car with key inserted. I got in the car and the car will not start. Sh*t no battery i guess. i did a 3rd try it worked.
As soon as the car starts both headlight are on. i did not even turn it on?!!
I went to the back of the car left brakelight is on but my moded brakelight not on? right brakelight is on and moded brakelight is on too.
I left the car running for a while i shut it off and head light off but singnal light are on and brake light on the right.
I try to take off the battery since i want to go home at night before the batter dead. i take off the battery(worng move) alarm goes off.
I left it and the alarm will not stop, it comes on every 30seconds.
get the battery back on and take it off again everything stopped.

What did i do wrong? am i able to get it start tonight when i go home?
Can someone help me ?

 

is it a old model mini issue thing?