Say, a colleague passes you a Figma link, you click it and surprisingly the browser opens, while you have the desktop app installed! You *sigh* and install this script script which adds a question if you want to open web or desktop.

README.md

Install

1. Install Hammerspoon
2. Install SpoonInstall (unzip and click to install)
3. Move the contents of appOrWebDialog.lua (question dialog version) or alwaysApp.lua (default to app version) to ~/.hammerspoon/init.lua
4. Reload Hammerspoon configuration if you already started it.
5. Set Hammerspoon as default web browser in macOS preferences -> General

Add more apps

1. Figure out the App Bundle Identifier. Right click "Show Package Contents" on Application and open Contents/Info.plist inside. Find the Bundle Identifier in the plist file.
2. Add a new line to url_patterns: { "https?://www.website.com", nil, hs.fnutils.partial(webOrDesktop, "Bundle Identifier here", "App name here") },
3. Reload Hammerspoon configuration

alwaysApp.lua

defaultBrowser = "org.mozilla.Firefox"
--defaultBrowser = "com.google.Chrome"
--defaultBrowser = "com.apple.Safari"

hs.loadSpoon("SpoonInstall")
Install=spoon.SpoonInstall

Install:andUse("URLDispatcher",
               {
                 config = {
                   url_patterns = {
                     { "https?://www.figma.com", "com.figma.Desktop" },
                     { "https?://www.notion.so", "notion.id" },
                   },
                   default_handler = defaultBrowser
                 },
                 start = true
               }
)

appOrWebDialog.lua

defaultBrowser = "org.mozilla.Firefox"
--Remove hypens below to set other browser as a default 
--defaultBrowser = "com.google.Chrome"
--defaultBrowser = "com.apple.Safari"

defaultBrowserName = string.match(defaultBrowser, '%a+$')

hs.loadSpoon("SpoonInstall")
Install=spoon.SpoonInstall

function openUrl(appBundleID,url,choice)
  if choice==defaultBrowserName then
    appBundleID = defaultBrowser
  -- Workaround: Notion share links can contain the company name, which the desktop app can't open.
  elseif string.find(url, "notion.so/") then
    url = string.gsub(url, "/pitch", "")
  end

  hs.application.launchOrFocusByBundleID(appBundleID)
  hs.urlevent.openURLWithBundle(url, appBundleID)
end

function webOrDesktop(appBundleID,appName,url)
  openFn = hs.fnutils.partial(openUrl, appBundleID, url)
  mousePos = hs.mouse.getAbsolutePosition()
  hs.dialog.alert(mousePos.x,mousePos.y,openFn,"How to open this "..appName.." link?", "", appName.." App", defaultBrowserName)
end

Install:andUse("URLDispatcher",
               {
                 config = {
                   url_patterns = {
                     { "https?://www.figma.com", nil, hs.fnutils.partial(webOrDesktop, "com.figma.Desktop", "Figma") },
                     { "https?://www.notion.so", nil, hs.fnutils.partial(webOrDesktop, "notion.id", "Notion")},
                   },
                   default_handler = defaultBrowser
                 },
                 start = true
               }
)