build

#!/bin/bash
set -x

function buildSlides(){
    cat ../template/default.properties > slides-1.md

    # move readme content
    cp README.md slides.md.2
    sed -i "1s/.*/$var/" slides.md.2
    cat slides.md.2 >> slides-1.md

    # move exercise content
    #for file in $EXERCISE_FILES ; do
    #    cat $file >> slides-1.md
    #    echo "" >> slides-1.md
    #done

    # move solution content (if exists)
    #if [ -f solution.md ]; then
    #    cp solution.md slides.md.3
    #    sed -i "1,4s/.*/$var/" slides.md.3
    #    cat slides.md.3 >> slides-1.md
    #fi
 
    pandoc slides-1.md -t beamer -o slides.pdf --template ../template/beamer.latex
    rm -f slides-1.md slides.md.2 slides.md.3
}

function buildSolution(){
    cat ../template/default.properties > solution-1.md
    cp solution.md solution-2.md
    sed -i "1s/.*/$var/" solution-2.md
    cat solution-2.md >> solution-1.md
    pandoc --pdf-engine=xelatex solution-1.md -t latex -o solution.pdf --template ../template/eisvogel.latex
    rm solution-1.md solution-2.md
}

function buildExercise(){
    cat README.md > exercise.md 
    echo "\newpage" >> exercise.md
    echo "" >> exercise.md

    sed -i "1s/.*/$var/" exercise.md
    mv exercise.md exercise.md.1
    cat ../template/default.properties >> exercise.md 
    cat exercise.md.1 >> exercise.md 
    rm exercise.md.1

    for file in $EXERCISE_FILES ; do
        cat $file >> exercise.md 
        echo "\newpage" >> exercise.md
        echo "" >> exercise.md
    done

    pandoc --pdf-engine=xelatex exercise.md -t latex -o exercise.pdf --template ../template/eisvogel.latex
    rm exercise.md
}

function buildAll(){
    exportArtifacts=$1; shift

    if [[ $exportArtifacts == "export" ]]; then
        mkdir -p artifacts
    fi

    export artefactList=""

    # build overview
    buildSlides

    # build each exercise
    for ex in $(ls | grep ex-); do
        
        echo "build exercise $ex ..."
        p=$(pwd) ; cd $ex
        source ./build

        if [[ $exportArtifacts == "export" ]]; then
            mkdir -p ../artifacts/$ex

            if [ -f slides.pdf ]; then
                cp slides.pdf ../artifacts/$ex/
                export artefactList="$artefactList artifacts/$ex/slides.pdf"
            fi

            if [ -f exercise.pdf ]; then
                cp exercise.pdf ../artifacts/$ex/
                export artefactList="$artefactList artifacts/$ex/exercise.pdf"
            fi

            if [ -f solution.pdf ]; then
                cp solution.pdf ../artifacts/$ex/
                export artefactList="$artefactList artifacts/$ex/solution.pdf"
            fi

            echo "EXTRA_ARTIFACTS: $EXTRA_ARTIFACTS"                
            for artifact in $EXTRA_ARTIFACTS; do
                cp $artifact ../artifacts/$ex/
            done
        fi

        cd $p
    done

    # final build tasks
    if [[ $exportArtifacts == "export" ]]; then
        # merge pdfs to one script file
        echo "merge pdfs to one script file"
        pdftk $artefactList cat output artifacts/fullscript.pdf
    fi

}

if [[ ${BASH_SOURCE[0]} != $0 ]]; then
  export -f buildSolution buildExercise buildSlides
else
  buildAll "${@}"
  exit $?
fi