#!/bin/sh
set -e

# usage: ./plain.sh <input txt> <output html>


# i/o variables

IN="$1"
OUT="$2"

[ -f $IN ] || { echo "---- [FATAL] $IN not found ----" ; exit 1 ; }


# initial write

cat plain-header > $2
cat $1 >> $2
printf "</pre>\n</body>\n</html>" >> $2
echo '[ok] initial assembly'

# hack to fix double <pre> when generating from nav.sh

sed -e "/^<pre>$/ {n;/^<pre>$/d}" -e "/^<\/pre>$/ {n;/^<\/pre>$/d}" -i'' $2


# metadata

sedesc() {
	sed -e 's;\&;\\\&;' -e 's/;/\\\;/' -e 's;-->;;'
}

TITLE=$(grep -e '^<!--title: ' -m 1 $1 | cut -f 2- -d ' ' | sedesc)
sed -e "/^<!--title:/d" -e "s;<title>#;<title>${TITLE};1" -i'' $2
printf '[ok] title: %s\n' "$TITLE"

MDATE=$(stat -c '%y' $1 | sed -e 's/\.[0-9]* //' -e 's/\(..\)\(..\)$/\1:\2/') # ISO 8601 format: "yyyy-mm-dd hh:mm:ss±zz:zz"
sed "/^<\/head>/i <meta http-equiv=\"last-modified\" content=\"${MDATE}\" />" -i'' $2
printf '[ok] date: %s\n' "$MDATE"


echo "---- build complete: $2 ----"