jenkins-config

#!/bin/sh -e

err () {
    echo "$1" >&2
}

if [ -z "$SNAP_DATA" ]; then
    err "SNAP_DATA not set."
    exit 1
fi

if [ ! -w "$SNAP_DATA" ]; then
    err "Please re-run as root:"
    err "\`cat config.xml | sudo /snap/bin/jenkins.config\`"
    exit 1
fi

if [ -t 0 ]; then
    err "This tool lets you replace the Jenkins configuration file:"
    err "\`cat config.xml | sudo /snap/bin/jenkins.config\`"
    err ""
    err "You will need to restart Jenkins to pick up any changes:"
    err "\`servicectl restart snap.jenkins.jenkins.service\`"
    err ""
    err "You can access Jenkins from your web browser at http://localhost:8080"
    exit 1
else
    if [ -e "$SNAP_DATA/config.xml" ] && [ "-f" != "$1" ]; then
        err "Sorry, Jenkins already has configuration data."
        err ""
        err "If you wish to overwrite it, run:"
        err "\`cat config.xml | sudo /snap/bin/jenkins.config -f\`"
        exit 1
    fi
    cat - > "$SNAP_DATA/config.xml"
fi