#!/bin/bash

build()
{
    for FMT in $FORMATS
    do
        mkdir -p build/pandoc/$FMT
        OPTS="-f rst"
        case $FMT in
            "html") OPTS="$OPTS -t html --variable lang=it"
                EXT=".html"
                SPLIT=true;;
            "latex") OPTS="$OPTS -t latex --variable lang=italian"
                EXT=".tex"
                SPLIT=true;;
            "pdf") OPTS="$OPTS --latex-engine=xelatex --variable lang=italian"
                EXT=".pdf"
                SPLIT=true;;
            "epub") OPTS="$OPTS -t epub --variable lang=it"
                EXT=".epub"
                SPLIT=false;;
        esac
        if $SPLIT
        then
            mkdir -p build/pandoc/$FMT/$TARGET
            for FNAME in $TARGET/*.rst
            do
                pandoc $OPTS -o build/pandoc/$FMT/${FNAME/.rst/}$EXT $FNAME
            done
        else
            pandoc $OPTS -o build/pandoc/$FMT/$TARGET$EXT $TARGET/*.rst
        fi
    done
}


print_help()
{
    echo "Usage: pandoc_build.sh [-H] [-l] [-p] [-e]"
    echo "                       {esempi,strumenti} [{esempi,strumenti} ...]"
    echo "Options:"
    echo "  -H    HTML5 snippet"
    echo "  -l    latex snippet"
    echo "  -p    PDF"
    echo "  -e    epub"
}

# Option parsing

FORMATS=""

while getopts "hHlpoe" Option
do
    case $Option in 
        h) print_help
            exit;;
        H) FORMATS="$FORMATS html";;
        l) FORMATS="$FORMATS latex";;
        p) FORMATS="$FORMATS pdf";;
        e) FORMATS="$FORMATS epub";;
    esac
done
shift $(($OPTIND - 1))

for TARGET in $*
do
    case $TARGET in
        "esempi") build;;
        "strumenti") build;;
        *) print_help;;
    esac
done