#!/bin/sh

set -e

CHATFILE="${CHATFILE:-/tmp/lets-chat.log}"

if [ "$GATEWAY_INTERFACE" != "CGI/1.1" ]; then
	echo "not a cgi script?" >&2
	exit 1
fi

if [ "$SERVER_PROTOCOL" != "GEMINI" ]; then
	echo "not running over gemini?" >&2
	exit 1
fi

# if [ "$REMOTE_USER" = "" ]; then
# 	printf "60 client certificate required\r\n"
# 	exit 0
# fi

if [ "$PATH_INFO" = "" ]; then
	printf "20 text/gemini\r\n"
	echo "# Let's chat over Gemini!"
	echo
	echo "=> $SCRIPT_NAME/post Post a message"
	echo "=> $SCRIPT_NAME/log  Follow the conversation"
	echo
	echo "=> https://git.omarpolo.com/blog/tree/resources/cgi/lets-chat source"
	exit 0
fi

if [ "$PATH_INFO" = "/post" ]; then
	if [ $# -eq 0 ]; then
		exec printf "10 message to send: \r\n"
	else
		now="$(date '+%Y-%m-%d %H:%M')"
		user="${REMOTE_USER##*/CN=}"
		user="${user%%/*}"
		echo "$now ${user:-anon}: $@" >> "${CHATFILE}"
		exec printf "30 $SCRIPT_NAME\r\n"
	fi
fi

if [ "$PATH_INFO" = "/log" ]; then
	printf "20 text/gemini\r\n"
	exec tail -f "${CHATFILE}"
fi

exec printf "51 not found\r\n"