How can i make custom bucket for my custom fluid

You would make an item that has a procedure linked to you right clicking on a block with it, and then you'd detect if the block it right clicked on was your fluid, and then if it is, you'd delete that block and then replace the empty custom bucket item with a different, filled up one, which then does the same thing but in reverse (you right click on a block and if it isn't air then you place your fluid at that spot)