Guide for the script need to take clone on every day per schedule time

Hi All,

Guide for me the script need to take the virtual machine clone on every day per schedule time.
Conditions:

1) Its need to be delete the previous day backup and name format it should be standard so that it could be auto delete the last day clone. 

2) Also the clone will be choose data store automatically which having enough disk space.

3) After completing the clone auto generated email needs to be sent. if the clone is not success failure message also need to forward.

4) we need to exclude some data store with condition filter.

Thank in advance!!