Replace (one or) two different patterns in a file with regexp

Suppose an input.txt file that contains several strings as the following ones: [[foo>a|a]] [[foo>b|b]] [[foo>c|c]] that I'd like to replace by: :foo:a :foo:b :foo:c I guess I could manage to achieve this result with sed or rg (I never used awk). But this file also contains other strings as the following ones: [[foo>a|d]] [[foo>b|e]] [[foo>c|f]] that I'd like to replace by: :foo:d :foo:e :foo:f All my attempts failed because I don't see how to handle two different patterns at once. Do you know some ways to achieve the latter result (and, BTW, the former)?