#!/bin/bash

# Echo commands, exit on error
set -o xtrace
set -o errexit

# Make sure only root can run our script
if [[ $EUID -ne 0 ]]; then
   echo "This script must be run as root"
   exit 1
fi

# This directory
CUR_DIR=$(cd $(dirname "$0") && pwd)

# Install software
DEPS="jenkins"
apt-get install -y --force-yes $DEPS

# Install jenkins
if [ ! -e /var/lib/jenkins ]; then
   echo "Jenkins installation failed"
   exit 1
fi

# Setup sudo
JENKINS_SUDO=/etc/sudoers.d/jenkins
cat > $JENKINS_SUDO <<EOF
jenkins ALL = NOPASSWD: ALL
EOF
chmod 440 $JENKINS_SUDO

# Setup .gitconfig
JENKINS_GITCONF=/var/lib/jenkins/hudson.plugins.git.GitSCM.xml
cat > $JENKINS_GITCONF <<EOF
<?xml version='1.0' encoding='UTF-8'?>
<hudson.plugins.git.GitSCM_-DescriptorImpl>
  <generation>4</generation>
  <globalConfigName>Jenkins</globalConfigName>
  <globalConfigEmail>jenkins@rcb.me</globalConfigEmail>
</hudson.plugins.git.GitSCM_-DescriptorImpl>
EOF

# Set ownership to jenkins
chown -R jenkins $CUR_DIR

# Set up jobs symlink
if [ ! -h /var/lib/jenkins/jobs ]; then
    echo "Installing jobs symlink"
    if [ -d /var/lib/jenkins/jobs ]; then
        mv /var/lib/jenkins/jobs /var/lib/jenkins/jobs.old
    fi
    ln -s $CUR_DIR/jobs /var/lib/jenkins/jobs
fi

# List of plugins
PLUGINS=http://hudson-ci.org/downloads/plugins/build-timeout/1.6/build-timeout.hpi,http://mirrors.jenkins-ci.org/plugins/git/1.1.12/git.hpi,http://hudson-ci.org/downloads/plugins/global-build-stats/1.2/global-build-stats.hpi,http://hudson-ci.org/downloads/plugins/greenballs/1.10/greenballs.hpi,http://download.hudson-labs.org/plugins/console-column-plugin/1.0/console-column-plugin.hpi

# Configure plugins
for plugin in ${PLUGINS//,/ }; do
    name=`basename $plugin`   
    dest=/var/lib/jenkins/plugins/$name
    if [ ! -e $dest ]; then
        curl -L $plugin -o $dest
    fi
done

# Restart jenkins
restart jenkins