deploy-zola-site

#!/usr/bin/env bash

set -o errexit
set -o errtrace
set -o nounset
set -o pipefail

warn () {
    if (( $# > 0 )); then
        echo "${@}" 1>&2
    fi
}

die () {
    warn "${@}"
    exit 1
}

notify () {
    local code=$?
    warn "✗ [FATAL] $(caller): ${BASH_COMMAND} (${code})"
}

trap notify ERR

display_help () {
    cat << EOF
Synopsis:
    ${0##*/} [OPTION]...

Options:
    -h, --help
        show this help message and exit
    -v, --version
        output version information and exit
EOF
}

while (( $# > 0 )); do
    case ${1} in
    -h | --help)
        display_help
        shift
        exit
        ;;
    -v | --version)
        echo v0.1.0
        shift
        exit
        ;;
    --)
        shift
        break
        ;;
    *)
        break
        ;;
    esac
done

if (( $# > 0 )); then
    die "✗ argument parsing failed: unrecognizable argument ‘${1}’"
fi

clean_up () {
    true
}

trap clean_up EXIT

PAGE=pages

git -C "${PAGE}" pull origin gh-pages
rm --force --recursive "${PAGE:?}/"*
zola build --output-dir "${PAGE}/public"
mv "${PAGE}/public/"* "${PAGE}"
rmdir "${PAGE}/public"
git -C "${PAGE}" add --all
git -C "${PAGE}" commit --message 'deploy zola site'
git -C "${PAGE}" push origin gh-pages