Never let macOS use my AirPods as an input device

NeverAirpods.swift

import Foundation
import ShellOut

do {
    try shellOut(to: "SwitchAudioSource -a")
} catch {
    print("Couldn't find SwitchAudioSource.")
    print("Please install switchaudio-osx via homebrew.")
    exit(1)
}

let webcam = "HD Pro Webcam C920"
let macbook = "MacBook Pro Microphone"

func findAvailableInput() -> String {
    let allInputDevices = try! shellOut(to: "SwitchAudioSource -t input -a").components(separatedBy: .newlines)

    if allInputDevices.contains(where: { $0.contains(webcam) }) {
        return webcam
    }
    return macbook
}

let timer = Timer.scheduledTimer(withTimeInterval: 1.0, repeats: true) { _ in
    let currentInputDevice = try! shellOut(to: "SwitchAudioSource -t input -c")
    if currentInputDevice.contains("AirPods") {
        let betterInput = findAvailableInput()
        print("Input set to \(currentInputDevice) 😡 Changing to \(betterInput) instead.")
        try! shellOut(to: "SwitchAudioSource -t input -s '\(betterInput)'")
    }
}

RunLoop.main.run(until: .distantFuture)