Hook: alternative "Get Address" script for Obsidian that returns file links

get-obsidian-file-link.rb

#!/Users/vincent/.rbenv/shims/ruby
#
# Generate an Obisidian link to the currently opened document, for
# use in Hook.
#
# As of version 3.4.3, Hook has 3 built-in methods for integrating
# with Obsidian. None of them suit my personal needs.
#
# - default: uses the obsidian://hook-get-address URL, which makes
#   Obsidian copy its URL to the clipboard.
# - Advanced URI: requires the use of the Advanced URI plugin in
#   Obsidian, with a configuration that sets unique IDs in the
#   front matter.
# - hook://file/ URLs scheme: also requires the Advanced URI plugin
#   in Obsidian.
#
# This script is an alternative implementation of the third solution,
# without requiring an additional plugin for Obsidian. It does require
# a working version of Ruby though.
#
# In Hook, set the "Get Address" script to the following:
#
# tell application "System Events" to set names to (name of every window of process "Obsidian")
# do shell script "export LC_ALL=en_US.UTF-8; export LANG=en_US.UTF-8; /Users/vincent/.rbenv/shims/ruby /Users/vincent/Code/mac-automation/get-obsidian-address.rb " & quoted form of (item 1 of names)# 
#
# What this does is, when you invoke Hook, get the list of Obsidian
# windows, select the first, and then invoke this Ruby script with that
# window's name as an argument.
#
# (In my testing, with multiple Obsidian windows open, the front 
# window is always the first one in the list.)
# 
# This Ruby script locates the selected vault on disk, reads its
# workspace configuration file, and selects the top item of the
# lastOpenFiles list.
#
# Finally it writes the path to this file. This is just a normal file
# reference, which means that hooks continue to work, even if you move
# files around.
#
# But now you have a problem: how to open these files in Obsidian? For
# that I'd like to refer to this nifty little tool called OpenIn that
# you can find at https://loshadki.app/openin/ and in the App Store. 
# You can set this up with some rules to have it open `.md` files in
# Obsidian, but only some. To make Obsidian work in OpenIn, I set up
# a couple of rules:
#
# - Path matches: any of my vaults
# - Use applications: Obsidian
# - Custom script: the one-liner `ctx.url.protocol = 'obsidian'`
# 
# And that does it!

Encoding.default_external = Encoding::UTF_8
Encoding.default_internal = Encoding::UTF_8

require 'json'
require 'erb'

# The window title is <vault> - Obsidian <version>", so
vault = ARGV[0].split(' - ')[0]

root = JSON.load_file(File.join(Dir.home, 'Library', 'Application Support', 'obsidian', 'obsidian.json'))['vaults'].values
    .map { |v| v['path'] }
    .select { |p| File.basename(p) == vault }

workspace = JSON.load_file(File.join(root, '.obsidian', 'workspace'))
document = workspace['lastOpenFiles'].first
print File.join(root, document)

I'm not using this script anymore. Instead I use the default Hook scripts for Obsidian, with the preference to return file links. That now works without using the clipboard (thanks to URL callback support in Obsidian),