#!/bin/sh
cd ${0%/*} || exit 1    # Run from this directory
[ -d "$WM_PROJECT_DIR" ] || {
    echo "Error (${0##*/}) : no \$WM_PROJECT_DIR found"
    echo "    Check your OpenFOAM environment and installation"
    echo "    WM_PROJECT_DIR=$WM_PROJECT_DIR"
    exit 1
}

usage() {
    exec 1>&2
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    cat<<USAGE

usage: ${0##*/} [OPTION]
options:
  -config name      use alternative doxygen config
  -dir    name      process given directory name directly
  -online           use links to the Github repositories instead of the
                    local source code
  -help

USAGE
    exit 1
}

# -----------------------------------------------------------------------------

defineURL() {
    WEB_PATH="https://develop.openfoam.com"
    FOAM_REPO_VERSION="$WM_PROJECT-plus"

    case "$WM_PROJECT_VERSION" in
    v[1-9][.0-9]*)
        FOAM_REPO_TAG="$WM_PROJECT-$WM_PROJECT_VERSION"
        ;;
    *)
        FOAM_REPO_TAG="master"
        ;;
    esac

    export FOAM_BASE_REPO="$WEB_PATH/Development/$FOAM_REPO_VERSION"
    export FOAM_ONLINE_REPO="$FOAM_BASE_REPO/blob/${FOAM_REPO_TAG}"
}


unset configName dirName

# Parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help)
        usage
        ;;
    -config)
        configName="$2"
        [ -f "$configName" ] || {
            # No such file. Try some common alternatives
            for ending in $configName ".$configName" "-$configName"
            do
                if [ -f "Doxyfile$ending" ]
                then
                    configName="Doxyfile$ending"
                    break
                fi
            done
        }
        [ -f "$configName" ] || {
            echo "Could not resolve Doxyfile config: $configName" 1>&2
            exit 1
        }
        shift
        ;;
    -dir)
        dirName="$2"
        [ -d "$dirName" ] || {
            echo "Could not resolve input directory: $dirName" 1>&2
            exit 1
        }
        shift
        ;;
    -online)
        defineURL
        ;;
    *)
        usage "unknown option/argument: '$1'"
        ;;
    esac
    shift
done


#------------------------------------------------------------------------------

rm -rf latex man

# Remove html directory in background
mv html html-stagedRemove$$ 2> /dev/null
rm -rf html-stagedRemove$$ >/dev/null 2>&1 &

# Ensure that created files are readable by everyone
umask 22

if [ -n "$dirName" ]
then
    # Create a temporary with only the specified directory
    tmpConfig="${TMPDIR:-/tmp}/Doxyfile.$$"
    trap 'rm -f $tmpConfig 2>/dev/null; exit 0' EXIT TERM INT
    cat $PWD/Doxyfile > $tmpConfig
    echo "INPUT = $dirName" >> $tmpConfig
    doxygen $tmpConfig
else
    doxygen $configName
fi

# Fix permissions (NB: '+X' and not '+x'!)
chmod -R a+rX html latex man 2>/dev/null

echo
echo "Done doxygen"
echo

#------------------------------------------------------------------------------