dump_applications

#!/bin/bash

cd "$(dirname "$0")" || return

declare installed_applications
declare added_applications
declare added_applications_count
declare removed_applications
declare removed_applications_count

installed_applications="$(system_profiler -json SPApplicationsDataType | jq -r '[
	.SPApplicationsDataType[] | select(
		(.obtained_from | test("^(identified_developer|mac_app_store)$")) and
		(.path | test("^/Applications/.+?\\.app/|/Applications/Utilities|/Library") | not) and
		(.signed_by | index("Developer ID Application: Adobe Inc. (JQ525L2MZD)") | not)
	)
] | group_by(.obtained_from)[] | sort_by(._name)[] | "\(.obtained_from) \"\(._name)\""')"
readonly installed_applications

if echo "$installed_applications" | cmp -s applications -; then
	echo 'Already up to date'
else
	added_applications="$(echo "$installed_applications" | diff -u applications - | tail -n +4 | grep '^\+' | sed 's/\+//')"
	readonly added_applications

	removed_applications="$(echo "$installed_applications" | diff -u - applications | tail -n +4 | grep '^\+' | sed 's/\+//')"
	readonly removed_applications

	if [[ -n $added_applications ]]; then
		added_applications_count="$(echo "$added_applications" | wc -l | tr -d '[:space:]')"
		readonly added_applications_count

		echo "Added $added_applications_count application$([[ added_applications_count -gt 1 ]] && printf 's'):"
		echo "$added_applications"
	fi

	[[ -n $added_applications && -n $removed_applications ]] && printf '\n'

	if [[ -n $removed_applications ]]; then
		removed_applications_count="$(echo "$removed_applications" | wc -l | tr -d '[:space:]')"
		readonly removed_applications_count

		echo "Removed $removed_applications_count application$([[ removed_applications_count -gt 1 ]] && printf 's'):"
		echo "$removed_applications"
	fi

	echo "$installed_applications" >applications
fi