#!/bin/sh
# shellcheck source=/dev/null disable=2154,2016
#
# Convert a crux pkgfile to puke's format.

die() {
    printf '\033[31mERROR>\033[m %s\n' "$@" >&2
    exit 1
}

repo_setup() {
    cd repo >/dev/null    || die "Not in kiss repository."
    mkdir "$name"         || die "$name already exists."
    cd "$name" >/dev/null || die "Can't cd to $name"
}

pkgfile_read() {
    [ -n "$1" ] || die "Need a pkgfile as input."
    [ -f "$1" ] || die "File not found '$1'"

    . "$1" || die "Syntax error in pkgfile."

    [ -n "$name" ]    || die "Field 'name' missing from pkgfile."
    [ -n "$version" ] || die "Field 'version' missing from pkgfile."
    [ -n "$release" ] || die "Field 'release' missing from pkgfile."
    [ -n "$source" ]  || die "Field 'source' missing from pkgfile."
}

pkgfile_version() {
    printf '%s\n' "$version $release" > version
}

pkgfile_source() {
    printf '%s\n' "$source" | while IFS=' ' read -r src; do
        printf '%s\n' "$src"
    done > sources
}

pkgfile_depends() {
    [ "$depends" ] || return

    printf '%s\n' "$depends" | while IFS=' ' read -r dep; do
        printf '%s\n' "$dep"
    done > depends
}

pkgfile_build() {
    sed 's/$\(BUILD\|PKG\)/$1/g' "$1" | while read -r line; do
        [ "$line" = "}" ] && code=
        [ "$code" ]       && printf '%s\n' "$line"

        [ "$line" = "build() {" ] && {
            printf '%s\n\n' "#!/bin/sh -e"
            code=1
        }
    done > build

    chmod +x build
}

main() {
    pkgfile_read "$1"

    repo_setup

    pkgfile_version
    pkgfile_source
    pkgfile_depends
    pkgfile_build "$1"
}

main "$@"