#!/bin/bash
#
# The "post-receive" script is run after receive-pack has accepted a pack
# and the repository has been updated.  It is passed arguments in through
# stdin in the form
#  <oldrev> <newrev> <refname>


# arguments
read oldrev newrev refname


# dirs
LIBS_DIR="/var/www/libs";
SOURCE_DIR="$GL_REPO_BASE_ABS/$GL_REPO.git"
TARGET_DIR="$LIBS_DIR/$GL_REPO"


# cleanup the environment
unset GIT_DIR


# processes
fix_permissions () {
    find $1 -type d -exec chmod 755 {} \;
    find $1 -type f -exec chmod 644 {} \;
}


# export_ref [ref] [directory]
export_ref () {
    git archive $1 | (cd $2 && tar xf -)
}


# decide whether to deploy
case $refname in
    refs/heads/* )
        BRANCH="${refname:11}"
        TARGET="$TARGET_DIR/$BRANCH/"
        echo "Executing deploy of library $GL_REPO, brach $BRANCH"
        cd $SOURCE_DIR && export_ref $BRANCH $TARGET
        fix_permissions $TARGET
    ;;
    refs/tags/* )
        TAG="${refname:10}"
        TARGET="$TARGET_DIR/$TAG/"
        echo "Executing deploy of library $GL_REPO, tag $BRANCH"
        cd $SOURCE_DIR && export_ref $TAG $TARGET
        fix_permissions $TARGET
    ;;
    * )
    ;;
esac
exit 0