Need scripting help please

Hey guys

Can anyone help me create a script that will do the following ( i thing its pretty simple but can't program >< ) 

Active document save as TIFF and rename to 'Bamboo',  - if file name exists, save as 'Bamboo_1', and a counter for more and more if Bamboo1' exists, create Bamboo_2 etc ... 

Not saving as batch but i need fast production saving the files to be efficient in my production as we send the files to a priner. At the moment, we rename manually which is super hard to keep track on.

I also have a template name "2sides" and we use the same template for different photos throughout the day, would love to have a script that renames the file in case its exists. Couldn't find a way to do with the action as it keeps overwriting the file.

Will really appreciate any help ! 

Thanks

Tom