Can I apply for a Macau visa upon arrival?

i want to go to macau from Tehran(the Capital of Iran) to macau .but i have to go there through china main land as transit destination (becuse there is no flights directly from Tehran to macau ).i have tow question 1- do i need to obtain china visa . 2- can i apply macau visa for upon arrival at the Immigration counter in macau airport. thanks for your help