# Copy files from /usr/share/jenkins/ref into $JENKINS_HOME
# So the initial JENKINS-HOME is set with expected content.
# Don't override, as this is just a reference setup, and use from UI
# can then change this, upgrade plugins, etc.
copy_reference_file() {
    f="${1%/}"
    b="${f%.override}"
    rel="${b:23}"
    version_marker="${rel}.version_from_image"
    dir=$(dirname "${b}")
    local action;
    local reason;
    local container_version;
    local image_version;
    local marker_version;
    local log; log=false
    if [[ ${rel} == plugins/*.jpi ]]; then
        container_version=$(get_plugin_version "$JENKINS_HOME/${rel}")
        image_version=$(get_plugin_version "${f}")
        if [[ -e $JENKINS_HOME/${version_marker} ]]; then
            marker_version=$(cat "$JENKINS_HOME/${version_marker}")
            if versionLT "$marker_version" "$container_version"; then
                action="SKIPPED"
                reason="Installed version ($container_version) has been manually upgraded from initial version ($marker_version)"
                log=true
            else
                if [[ "$image_version" == "$container_version" ]]; then
                    action="SKIPPED"
                    reason="Version from image is the same as the installed version $image_version"
                else
                    if versionLT "$image_version" "$container_version"; then
                        action="SKIPPED"
                        log=true
                        reason="Image version ($image_version) is older than installed version ($container_version)"
                    else
                        action="UPGRADED"
                        log=true
                        reason="Image version ($image_version) is newer than installed version ($container_version)"
                    fi
                fi
            fi
        else
            if [[ -n "$TRY_UPGRADE_IF_NO_MARKER" ]]; then
                if [[ "$image_version" == "$container_version" ]]; then
                    action="SKIPPED"
                    reason="Version from image is the same as the installed version $image_version (no marker found)"
                    # Add marker for next time
                    echo "$image_version" > "$JENKINS_HOME/${version_marker}"
                else
                    if versionLT "$image_version" "$container_version"; then
                        action="SKIPPED"
                        log=true
                        reason="Image version ($image_version) is older than installed version ($container_version) (no marker found)"
                    else
                        action="UPGRADED"
                        log=true
                        reason="Image version ($image_version) is newer than installed version ($container_version) (no marker found)"
                    fi
                fi
            fi
        fi
        if [[ ! -e $JENKINS_HOME/${rel} || "$action" == "UPGRADED" || $f = *.override ]]; then
            action=${action:-"INSTALLED"}
            log=true
            mkdir -p "$JENKINS_HOME/${dir:23}"
            cp -r "${f}" "$JENKINS_HOME/${rel}";
            # pin plugins on initial copy
            touch "$JENKINS_HOME/${rel}.pinned"
            echo "$image_version" > "$JENKINS_HOME/${version_marker}"
            reason=${reason:-$image_version}
        else
            action=${action:-"SKIPPED"}
        fi
    else
        if [[ ! -e $JENKINS_HOME/${rel} || $f = *.override ]]
        then
            action="INSTALLED"
            log=true
            mkdir -p "$JENKINS_HOME/${dir:23}"
            cp -r "${f}" "$JENKINS_HOME/${rel}";
        else
            action="SKIPPED"
        fi
    fi
    if [[ -n "$VERBOSE" || "$log" == "true" ]]; then
        if [ -z "$reason" ]; then
            echo "$action $rel" >> "$COPY_REFERENCE_FILE_LOG"
        else
            echo "$action $rel : $reason" >> "$COPY_REFERENCE_FILE_LOG"
        fi
    fi
}