#!/bin/bash

set -o xtrace

source /var/onap/commons

# configure_dns() - DNS/GW IP address configuration
function configure_dns {
    echo "nameserver 10.0.0.1" >> /etc/resolvconf/resolv.conf.d/head
    resolvconf -u
}

# create_configuration_files() -  Store credentials in files
function create_configuration_files {
    mkdir -p /opt/config
    echo $nexus_docker_repo > /opt/config/nexus_docker_repo.txt
    echo $nexus_username > /opt/config/nexus_username.txt
    echo $nexus_password > /opt/config/nexus_password.txt
    echo $openstack_username > /opt/config/openstack_username.txt
    echo $openstack_tenant_id > /opt/config/tenant_id.txt
    echo $dmaap_topic > /opt/config/dmaap_topic.txt
    echo $docker_version > /opt/config/docker_version.txt
}

# pull_openecomp_image() - Pull Docker container image from a Docker Registry Hub
function pull_openecomp_image {
    install_docker
    local image=$1
    local tag=$2
    docker login -u $nexus_username -p $nexus_password $nexus_docker_repo
    docker pull $nexus_docker_repo/openecomp/${image}:$docker_version
    if [ ${tag} ]; then
        docker tag $nexus_docker_repo/openecomp/${image}:$docker_version $tag
    fi
}

# git_timed() - git can sometimes get itself infinitely stuck with transient network
# errors or other issues with the remote end.  This wraps git in a
# timeout/retry loop and is intended to watch over non-local git
# processes that might hang.
function git_timed {
    local count=0
    local timeout=0

    install_package git
    until timeout -s SIGINT ${timeout} git "$@"; do
        # 124 is timeout(1)'s special return code when it reached the
        # timeout; otherwise assume fatal failure
        if [[ $? -ne 124 ]]; then
            exit 1
        fi

        count=$(($count + 1))
        if [ $count -eq 3 ]; then
            exit 1
        fi
        sleep 5
    done
}

# clone_repo() - Clone Git repository into specific folder
function clone_repo {
    local repo_url=https://git.onap.org/
    local repo=$1
    local dest_folder=$2
    if [ ! -d $2 ]; then
        git_timed clone -b $gerrit_branch --single-branch ${repo_url}${repo} $dest_folder
    else
        pushd $dest_folder
        git_timed pull
        popd
    fi
}

# install_dev_tools() - Install basic dependencies
function install_dev_tools {
    install_package apt-transport-https
    install_package ca-certificates
    install_package curl
}

# install_bind() - Install bind utils
function install_bind {
    install_package bind9
    install_package bind9utils
}

# configure_bind()- Configure bind utils
function configure_bind {
    install_bind
    mkdir /etc/bind/zones

    curl -k $nexus_repo/org.openecomp.demo/boot/$artifacts_version/db_simpledemo_openecomp_org -o /etc/bind/zones/db.simpledemo.openecomp.org
    curl -k $nexus_repo/org.openecomp.demo/boot/$artifacts_version/named.conf.options -o /etc/bind/named.conf.options
    curl -k $nexus_repo/org.openecomp.demo/boot/$artifacts_version/named.conf.local -o /etc/bind/named.conf.local

    modprobe ip_gre
    sed -i "s/OPTIONS=.*/OPTIONS=\"-4 -u bind\"/g" /etc/default/bind9
    service bind9 restart
}

# install_java() - Install java binaries
function install_java {
    install_package software-properties-common
    add-apt-repository -y ppa:openjdk-r/ppa
    install_package openjdk-8-jdk
}

# install_maven() - Install maven binaries
function install_maven {
    if is_package_installed maven; then
        return
    fi
    if ! is_package_installed openjdk-8-jdk; then
        install_java
    fi
    install_package software-properties-common
    add-apt-repository -y ppa:andrei-pozolotin/maven3
    install_package maven3

    # Force Maven3 to use jdk8
    apt-get purge openjdk-7-jdk -y
}

# configure_docker_proxy() - Configures proxy in Docker from ENV
function configure_docker_proxy {
    if [ $http_proxy ]; then
        echo "export http_proxy=$http_proxy" >> /etc/default/docker
    fi
    if [ $https_proxy ]; then
        echo "export https_proxy=$https_proxy" >> /etc/default/docker
    fi
}

# build_docker_image() - Build Docker container image from source code
function build_docker_image {
    local src_folder=$1
    local profile=$2
    install_maven
    install_docker
    pushd $src_folder

    # Cleanup external repo
    sed -i 's|${docker.push.registry}/||g' pom.xml
    local mvn_docker="mvn clean package docker:build"
    if [ $profile ]; then
        mvn_docker+=" -P $profile"
    fi
    if [ $http_proxy ]; then
        mvn_docker+=" -Ddocker.buildArg.http_proxy=$http_proxy"
        mvn_docker+=" -Ddocker.buildArg.HTTP_PROXY=$http_proxy"
    fi
    if [ $https_proxy ]; then
        mvn_docker+=" -Ddocker.buildArg.https_proxy=$https_proxy"
        mvn_docker+=" -Ddocker.buildArg.HTTPS_PROXY=$https_proxy"
    fi
    eval $mvn_docker
    popd
}

# compile_src() - Function that compiles the java source code thru maven
function compile_src {
    local src_folder=$1
    pushd $src_folder
    if [ -f pom.xml ]; then
        install_maven
        mvn clean install -DskipTests=true -Dmaven.test.skip=true -Dadditionalparam=-Xdoclint:none
    fi
    popd
}

# install_docker() - Download and install docker-engine 
function install_docker {
    if is_package_installed docker-ce; then
        return
    fi
    install_package software-properties-common
    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
    add-apt-repository \
        "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
        $(lsb_release -cs) \
        stable"
    install_package docker-ce
    configure_docker_proxy
    service docker restart
}

# install_docker_compose() - Download and install docker-engine 
function install_docker_compose {
    local docker_compose_version=${1:-1.12.0}
    if [ ! -d /opt/docker ]; then
        mkdir /opt/docker
        curl -L https://github.com/docker/compose/releases/download/$docker_compose_version/docker-compose-`uname -s`-`uname -m` > /opt/docker/docker-compose
        chmod +x /opt/docker/docker-compose
    fi
}

# configure_service() - Download and configure a specific service in upstart
function configure_service {
    local service_script=$1
    curl -k $nexus_repo/org.openecomp.demo/boot/$artifacts_version/$service_script -o /etc/init.d/$service_script
    chmod +x /etc/init.d/$service_script
    update-rc.d $service_script defaults
}