#!/bin/sh

usage() {
    echo "$0 directory"
    exit 1
}

die() {
    echo "$1"
    exit 1
}

testsite=0
if [ "$1" = "-t" ]
then
    testsite=1
    shift
fi

DIR=$(basename $1)
DESTFILENAME=$2
CURINODE=$(stat -f "%i" current/)

test -d "$DIR" || usage
test -d ../public/ || die "You must run this from openbsd-webzine/current"
ls $DIR/*.html 2>&1 >/dev/null || die "no html file in $DIR"

. ./${DIR}/metadata.sh

if [ "$testsite" -eq 0 ] && [ "$(stat -f '%i' $DIR)" -eq "$CURINODE" ]
then
    DEST=dev
else
    DEST=public
fi

if test -z "$DESTFILENAME"
then
    DESTFILENAME="../${DEST}/${DIR}.html"
fi

cat _common/header $DIR/*html _common/footer > $DESTFILENAME

if ! [ "$DIR" = "_index" ]
then
    set -e
    # replace with issue number
    issue="${1#issue-}"
    sed -i "s/__ISSUE__/${issue}/g" $DESTFILENAME
    sed -i "s/__TITLE__/issue #${issue}/g" $DESTFILENAME
    sed -i "s/__FILENAME__/issue-${issue}.html/" $DESTFILENAME
    # replace date
    DATETIME="$(date -j -f "%Y-%m-%dT%H:%M:%SZ" "${PUBLISHED_DATE}" +"%Y-%m-%d %H:%M")" 2>/dev/null
    HUMAN_DATE="$(date -j -f "%Y-%m-%dT%H:%M:%SZ" "${PUBLISHED_DATE}" +"%B %e, %Y")" 2>/dev/null

    if [ $? -ne 0 ];
    then
        echo "err: Please fill ${DIR}/metadata.sh with ISO-8601 valid date"
        exit 1
    fi
    sed -i "s,__DATETIME__,${DATETIME}," $DESTFILENAME
    sed -i "s/__HUMAN_DATE__/${HUMAN_DATE}/" $DESTFILENAME

    # find contributors since last issue. This must be at last /!\
    lastissue=$(( $issue - 1 ))
    if [ $lastissue -ge 1 ]; then
        . ./issue-${lastissue}/metadata.sh
        lastdate="${PUBLISHED_DATE}"
    else
	lastdate="0"
    fi
    contributors="$(git log --reverse --format=%aN --since=2021-09-30T20:12:00Z |\
                        sort |\
                        uniq -c |\
                        sort -r |\
                        awk '{for (i=2;i<=NF;i++) {printf $i " "} printf"- " }' |\
                        sed 's/..$//')"
    sed -i "s/__CONTRIBUTORS__/$contributors/g" $DESTFILENAME
    echo $contributors > /tmp/test.txt

else
    # index.html changes
    sed -i "s/ #__ISSUE__//g" $DESTFILENAME
    sed -i "s/__TITLE__/homepage/g" $DESTFILENAME
    sed -i "s/__FILENAME__/index.html/" $DESTFILENAME
    sed -i "/__CONTRIBUTORS__/d" $DESTFILENAME
fi