#!/bin/sh
#
# make-luacheck-files.sh
# v1 - E - Initial version
# v2 - E - Remove (most) inline scripts

set -ue

if [ ! -d "mods" ] || [ ! -r ".luacheck.head" ]; then
	printf "error: this script needs to be run from the mineclonia project root\n" 1>&2
	exit 1
fi

HEADER='
-------------------------------------------------------------------
-- THIS FILE WAS AUTOGENERATED BY tools/make-luacheck-files.sh ! --
--    DO NOT EDIT BY HAND. YOUR CHANGES WILL BE LOST NEXT RUN!   --
-------------------------------------------------------------------

'

# This takes any line that contains 'depends' and an equal sign
# and spits out each (comma-separated) entry on its own line.
modconf2deps() {
	sed -n -r -e '
	# Match any lines like "depends = asdfada"
	/depends *=/{
		# Get rid of the "depends =" part
		s/.*depends *=//;
		# Convert commas to newlines
		s/, */\n/g;
		# Record the output
		p;
	}'
}

find mods -type d -print | while read -r DIR; do
	if [ -r "$DIR/depends.txt" ]; then
		printf "found: %s (%s)\n" "$DIR" "depends.txt" 1>&2
		# depends.txt is a simple newline-delimited file,
		# so we can just read it in.
		DEPS="$(cat "$DIR/depends.txt")"
	elif [ -r "$DIR/mod.conf" ]; then
		printf "found: %s (%s)\n" "$DIR" "mod.conf" 1>&2
		# mod.conf needs some more help to get usable
		# data out of it.
		DEPS="$(modconf2deps < "$DIR/mod.conf")"
	else
		# Empty dir, or not a mod dir.
		continue
	fi

	EMPTY=0
	if [ -z "$DEPS" ]; then
		EMPTY=1
	fi

	# Get only the last chunk of the directory
	# for the mod name.
	MOD="${DIR##*/}"

	# Now we run through it through the formatter
	awk \
		-v DIR="$DIR" \
		-v EMPTY="$EMPTY" \
		-v MOD="$MOD" \
		-f tools/deps-to-luacheck.awk <<-EOF
	$DEPS
	EOF
done > .luacheck.files

# Put the final thing together with the warning header
{ printf "%s" "$HEADER"; cat .luacheck.head .luacheck.files; } > .luacheckrc