#!/bin/sh
set -e

##
# variables
localbase="${LOCALBASE:-/usr/local}"
gitdir="/home/_srczap/src"
giturl="${SRCZAP_GITURL:-https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git}"
branch="${SRCZAP_BRANCH:-hardened/14-stable/master}"
installdir="${SRCZAP_INSTALLDIR:-/usr/src}"
revision="${installdir}"/.srczap
libexec="${localbase}"/libexec/srczap

##
# functions
require_dependency() {
    deps=$1
    for dep in $deps; do
        if ! which -s "$dep"; then
            echo "[x] This command requires ${dep}, but ${dep} wasn't found"
            exit 1
        fi
    done
}

##
# main
i=1
while [ "${i}" -le "$#" ]; do
    eval "_srczap_option=\$${i}"
    # shellcheck disable=SC2154
    if [ "${_srczap_option}" = "-v" ]; then
        cat "${localbase}"/share/srczap/VERSION
        exit 0
    fi
    # shellcheck disable=SC2003
    i=$(expr "${i}" + 1);
done

case $1 in
    "clone")
        require_dependency "git doas"
        "${libexec}"/srczap-clone "${giturl}" "${gitdir}" "${branch}"
        ;;
    "pull")
        require_dependency "git doas"
        "${libexec}"/srczap-pull "${gitdir}" "${branch}"
        ;;
    "erase")
        "${libexec}"/srczap-erase "${gitdir}" "${installdir}"
        ;;
    "install")
        require_dependency "git doas"
        "${libexec}"/srczap-install "${gitdir}" "${installdir}" "${revision}"
        ;;
    *)
        printf "Usage: srczap COMMAND [OPTIONS]\n"
        printf "\n"
        printf "Commands:\n"
        printf "  clone    Clone the HardenedBSD source tree\n"
        printf "  pull     Pull source tree updates\n"
        printf "  erase    Erase /usr/src/ and /home/_srczap/src/\n"
        printf "  install  Install the source tree into /usr/src/\n"
        ;;
esac