#!/bin/sh
#―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――
# Name:	librejam_gemini
# Desc:	Creates a gemini page for a game-jam entry.
# Reqs: librejam_gemini
# Date:	2022-03-30
#―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――

sanitize() {
	sed 's% %-%g' \
	| tr 'A-Z' 'a-z' \
	| sed 's% $%%'
}

get_release_git() {
	pushd "$SUBMISSIONS_ROOT/$OUTNAME/"
	git clone "$URL" "release"
	if test "$?" -ne 0; then
		popd
		exit 1
	fi

	pushd "release/"
	git checkout "$BRANCH"
	if test "$?" -ne 0; then
		popd
		rm -rf release/
		popd
		exit 2
	fi

	popd
	tar -czvf release.tar.gz release/
	rm -rf release/
	popd
}


get_release_curl() {
	local suffix="$(echo "$URL" | sed 's%.*\.%%')"
	if echo "$suffix" | grep "/"; then
		suffix="raw"
	fi

	local out_path="$SUBMISSIONS_ROOT/$OUTNAME/release.$suffix"

	curl -o "$out_path" "$URL"
	if test "$?" -ne 0; then
		exit 3
	fi

	OUTLEAF="$(basename "$out_path")"
}

average_rating() {
	SUM="$(awk '{print $2}' "$RATINGS_FILE" | tr '\n' '+' | sed 's%+$%%')"
	COUNT="$(wc -l "$RATINGS_FILE" | awk '{print $1}')"
	echo "($SUM) / $COUNT" \
	| bc
}


SENDER="$1"
URL="$2"
BRANCH="$3"
NAME="$4"
SUBMISSIONS_ROOT="$5"
RATINGS_FILE="$6"

OUTNAME="$(echo "$NAME" | sanitize)"
OUTLEAF="release.tar.gz"

if test -z "$RATINGS_FILE" -a "$BRANCH" = ":curl"; then
	get_release_curl > /dev/null
elif test -z "$RATINGS_FILE" -a -n "$BRANCH"; then
	get_release_git > /dev/null
fi

echo "# $NAME - By $SENDER"
echo "=> $OUTLEAF Submitted version"
echo "=> $URL Upstream source"

if test -n "$RATINGS_FILE" -a -e "$RATINGS_FILE"; then
	echo ""
	echo "## Ratings"
	echo "* Average score: $(average_rating)"

	awk	'{ printf("* %s: [%s] ", $1, $2);
		for(i = 1; i <= NF; i++)
			if (i > 2)
				printf($i" ");
		print "" }' \
		"$RATINGS_FILE" \
	| sed 's% $%%'
fi