#!/bin/sh

# Batch operations on vimki

# rename changes the link name and propagates the change in the wiki
rename1() {
	[ "$(head -c 8 "$3")" = VimCrypt ] && return
	gawk -v old="$1" -v new="$2" -v IGNORECASE=1 '
	{
		gsub("[[]" old "[]]", "[" new "]")
		print
	}
	' "$3" > "$3.$$" && mv "$3.$$" "$3"
}

link2rx() {
	gawk -v rx="$1" -v IGNORECASE=1 '
	BEGIN {
		gsub(/_/, "\\W+", rx)
		gsub(/a/, "[aåäáàâã]", rx)
		gsub(/c/, "[cç]", rx)
		gsub(/e/, "[eéèêë]", rx)
		gsub(/i/, "[iîíìï]", rx)
		gsub(/o/, "[oôöóõò]", rx)
		gsub(/u/, "[uùûüú]", rx)
		gsub(/y/, "[yÿ]", rx)
		gsub(/n/, "[nñ]", rx)
		print rx
	}'
}

#shellcheck disable=SC2020

linkfile() {
	echo "$1" |
	tr '[:upper:]' '[:lower:]' |
	tr 'åäáàâãçéèêëîíìïôöóõòùûüúÿñ' 'aaaaaaceeeeiiiiooooouuuuyn' |
	awk '{gsub(/\W+/, "_"); print}'
}

rename() {
	rx=$(link2rx "$1")
	# Parallelize renaming
	echo *.md | xargs -n 1 -P 8 "$0" rename1 "$rx" "$2"
	oldf="$(linkfile "$1").md"
	[ -f "$oldf" ] && mv "$oldf" "$(linkfile "$2").md"
}

fixfiles() {
	for f in *; do
		mv "$f" "$(linkfile "$f")"
	done
}

cd ~/Wiki || exit
"$@"