Develop a TRRS 3.5 mm female male adapter with 2 foot buttons

Develop a TRRS 3.5 mm female male adapter with 2 foot buttons. Need to design a TRRS 3.5 mm female male adapter with 2 foot buttons to control MP player of android phone. 1 Button for Play/Pause and another for rewind and forward. Buttons should be controlled by Toes. So SPDT switch should be in a form of button.
Device should be similar in operation to this one: https://exampassed.net/product-category/exam-cheat-mp3-player-with-foot-control/
Some information available here:
https://www.wisebread.com/build-a-cable-to-control-your-android-phone-while-you-drive