#! /bin/sh

kersplit () {
    first=1
    # Add an extra line to chop
    parts=$( (cat horrors2.xhtml; echo) | sed -n '/class="part/=;$=')
    for part in $parts; do
        fn=$1; shift
        cat head.xhtml > $fn
        last=$(expr $part - 1)
        sed -n "${first},${last}p" horrors2.xhtml >> $fn
        cat foot.xhtml >> $fn
        first=$part
    done
}

xhtml="epub/book.xhtml epub/part1.xhtml epub/part2.xhtml epub/part3.xhtml epub/part4.xhtml epub/part5.xhtml epub/part6.xhtml epub/part7.xhtml"
kersplit $xhtml


rm -rf epub/art
if true; then
    mkdir epub/art
    for i in art/*.png; do
        echo $i
        pngtopnm $i | pnmscale -xysize 800 600 | pnmtopng > epub/$i
    done
    for i in art/*.jpg; do
        echo $i
        jpegtopnm $i | pnmscale -xysize 800 600 | pnmtojpeg > epub/$i
    done
fi
cp style.css epub/



cd epub
echo -n application/epub+zip > mimetype
cat >MANIFEST <<EOF
mimetype
META-INF/container.xml
content.opf
EOF
cat > content.opf <<EOF
<?xml version="1.0"?>
<package version="2.0" xmlns="http://www.idpf.org/2007/opf" unique-identifier="BookId">
<metadata xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:opf="http://www.idpf.org/2007/opf">
   <dc:title>Horrors 2</dc:title>
   <dc:language>en</dc:language>
   <dc:identifier id="BookId" opf:scheme="title">Horrors2</dc:identifier>
   <dc:creator opf:file-as="Something Awful Forums" opf:role="aut">The Something Awful Forums</dc:creator>
</metadata>
 
<manifest>
EOF
rm spine
find . -type f | sed 's#./##' | while read fn; do
    b=$(basename $fn)
    id=thing$count
    count=$(expr $count + 1)
    case "$b" in
        META-INF/*|MANIFEST|mimetype|content.opf|spine)
            continue
            ;;
        *.xhtml)
            id=$(basename $b .xhtml)
            type=application/xhtml+xml
            echo $id >> spine
            ;;
        *.css)
            type=image/css
            ;;
        book.ncx)
            id=ncx
            ;;
        *.png)
            type=image/png
            ;;
        *.jpg)
            type=image/jpeg
            ;;
        *.svg)
            type=image/svg+xml
            ;;
        *.otf)
            type=application/octet-stream
            ;;
    esac
    echo "<item id=\"$id\" href=\"$fn\" media-type=\"$type\"/>" >> content.opf
    echo $fn >> MANIFEST
done
cat >> content.opf <<EOF
</manifest>
 
<spine toc="ncx">
EOF
sort spine | while read id; do
    # "book" sorts before "part*" :)
    echo "  <itemref idref=\"$id\" />" >> content.opf
done
rm spine
cat >> content.opf <<EOF
</spine>
 </package>
EOF

xargs zip -Xr9D ../book.epub < MANIFEST