#!/bin/bash

# Parameters
NCPVALIDATE="1.0.3"
GIT="git version 2."
JAVA="1.8.0"
MAVEN="Apache Maven 3.5.0"
DOCKER="17.06.1-ce"
KUBERNETES="1.7.2"
AWSCLI="1.11.142"
NEXUSREPO="http://nexus.foo.net/repository/maven-public/"
NODE="v6.11.1"
#VUECLI="2.8.2"
declare -a clusters=("dev.kcluster.foo.bar")

# Utils
red=`tput setaf 1`
green=`tput setaf 2`
reset=`tput sgr0`

echo "* ncp-validate ($NCPVALIDATE) - A tool for validating expected versions for NCP"
echo "================================================================================"
echo "Expected versions:"
echo "GIT        : $GIT"
echo "JAVA       : $JAVA"
echo "MAVEN      : $MAVEN"
echo "DOCKER     : $DOCKER"
echo "KUBERNETES : $KUBERNETES"
echo "AWSCLI     : $AWSCLI"
echo "NEXUSREPO  : $NEXUSREPO"
echo "NODE       : $NODE"
#echo "VUECLI     : $VUECLI"

echo "================================================================================"
echo "Validating Git version..."
command -v git > /dev/null 2>&1 || { echo "${red}[ER]:${reset} I requiere git but it's not installed."; exit 1; }
GITVERSION=`git --version 2>&1|grep "$GIT"`
if [ "$GITVERSION" == "" ]; then
	echo "${red}[ER]:${reset} Unexpected git version, found: `git --version 2>&1`, expected: $GIT"
	exit 1;
else
	echo "${green}[OK]:${reset} Correct git version, found: `git --version 2>&1`, expected: $GIT"
fi

echo "================================================================================"
echo "Checking updates..."
GITOUTPUT=`git -C ~/.ncp-validate pull 2>&1`
if [ "$GITOUTPUT" != "Already up-to-date." ]; then
	echo "ncp-validate updated!, restarting..."
	ncp-validate
	exit 0;
else
	echo $GITOUTPUT
fi

echo "================================================================================"
echo "Validating JDK version..."
command -v javac > /dev/null 2>&1 || { echo "${red}[ER]:${reset} I requiere javac but it's not installed."; exit 1; }
JAVAVERSION=`javac -version 2>&1|grep $JAVA`
if [ "$JAVAVERSION" == "" ]; then
	echo "${red}[ER]:${reset} Unexpected java version, found: `javac -version 2>&1`, expected: $JAVA"
	exit 1;
else
	echo "${green}[OK]:${reset} Correct java version, found: `javac -version 2>&1`, expected: $JAVA"
fi

echo "================================================================================"
echo "Validating kubernetes version..."
command -v kubectl > /dev/null 2>&1 || { echo "${red}[ER]:${reset} I requiere kubectl but it's not installed."; exit 1; }
KUBECTVERSION=`kubectl version`
KUBECLIENTVERSION=`echo "$KUBECTVERSION" | grep "Client Version" | awk -F'GitVersion:"v' '{print $2}' | awk -F'"' '{print $1}'`
KUBESERVERVERSION=`echo "$KUBECTVERSION" | grep "Server Version" | awk -F'GitVersion:"v' '{print $2}' | awk -F'"' '{print $1}'`
# Client
if [ "$KUBECLIENTVERSION" != "$KUBERNETES" ]; then
	echo "${red}[ER]:${reset} kubectl Client version isn't correct, expected: $KUBERNETES, current: $KUBECLIENTVERSION (more info, execute: kubectl version)"
	echo "How to install a specific version: https://kubernetes.io/docs/tasks/tools/install-kubectl/#install-kubectl-binary-via-curl"
	exit 1;
else
	echo "${green}[OK]:${reset} kubectl Client version isn't correct, expected: $KUBERNETES, current: $KUBECLIENTVERSION (more info, execute: kubectl version)"
fi
# Server
if [ "$KUBESERVERVERSION" != "$KUBERNETES" ]; then
	echo "${red}[ER]:${reset} kubectl Server version isn't correct, expected: $KUBERNETES, current: $KUBESERVERVERSION (more info, execute: kubectl version)"
	exit 1;
else
	echo "${green}[OK]:${reset} kubectl Server version is correct, expected: $KUBERNETES, current: $KUBESERVERVERSION (more info, execute: kubectl version)"
fi

echo "================================================================================"
echo "Validating kubernetes configuration..."
if [ ! -f ~/.kube/config ]; then
	echo "${red}[ER]:${reset} ~/.kube/config isn't present, it's required to interact with Kubernetes Cluster"
	exit 1;
else
	echo "${green}[OK]:${reset} ~/.kube/config is present, it's required to interact with Kubernetes Cluster"
	for i in "${clusters[@]}"
	do
		kubectl cluster-info --cluster=$i
	done
fi

echo "================================================================================"
echo "Validating aws-cli version..."
command -v aws > /dev/null 2>&1 || { echo "${red}[ER]:${reset} I requiere aws but it's not installed."; exit 1; }
AWSCLIVERSION=`aws --version 2>&1 |grep "$AWSCLI"`
if [ "$AWSCLIVERSION" == "" ]; then
	echo "${red}[ER]:${reset} aws version isn't correct, expected: $AWSCLI, current: `aws --version 2>&1`"
	echo "More info: https://github.com/aws/aws-cli/"
	exit 1;
else
	echo "${green}[OK]:${reset} aws version is correct, expected: $AWSCLI, current: `aws --version 2>&1`"
fi


echo "================================================================================"
echo "Validating maven configuration..."
command -v mvn > /dev/null 2>&1 || { echo "${red}[ER]:${reset} I requiere mvn but it's not installed."; exit 1; }
MVNVERSION=`mvn --version|grep "$MAVEN"`
if [ "$MVNVERSION" == "" ]; then
	echo "${red}[ER]:${reset} mvn version isn't correct, expected: $MAVEN, current: $MVNVERSION"
	exit 1;
else
	echo "${green}[OK]:${reset} mvn version is correct, expected: $MAVEN, current: $MVNVERSION"
fi
if [ ! -f ~/.m2/settings.xml ]; then
	echo "${red}[ER]:${reset} ~/.m2/settings.xml isn't present, it's required to authenticate nexus.foo.net to push artifacts"
	exit 1;
else
	echo "${green}[OK]:${reset} ~/.m2/settings.xml is present, it's required to authenticate nexus.foo.net to push artifacts"
	# Checking repository
	REPOEXISTS=`mvn help:evaluate -Dexpression=project.repositories[0].url | grep -v '\[INFO\]'`
	if [ "$REPOEXISTS" != "$NEXUSREPO" ]; then
		echo "${red}[ER]:${reset} Expected repo: $NEXUSREPO"
		echo "$REPOEXISTS (more info, execute: mvn help:evaluate -Dexpression=project.repositories[0].url)"
		exit 1;
	else
		echo "${green}[OK]:${reset} Nexus repo found: $REPOEXISTS"
	fi
fi
if [ ! -f ~/.m2/settings-security.xml ]; then
	echo "${red}[ER]:${reset} ~/.m2/settings-security.xml isn't present, it's required to decrypt the passwords defined on ~/.m2/settings.xml"
	exit 1;
else
	echo "${green}[OK]:${reset} ~/.m2/settings-security.xml is present, it's required to decrypt the passwords defined on ~/.m2/settings.xml"
fi

echo "================================================================================"
echo "Validating docker CE version..."
command -v docker > /dev/null 2>&1 || { echo "${red}[ER]:${reset} I requiere docker but it's not installed."; exit 1; }
DOCKERVERSION=`docker --version|grep $DOCKER`
if [ "$DOCKERVERSION" == "" ]; then
	echo "${red}[ER]:${reset} docker version isn't correct, expected: $DOCKER, current: `docker --version`"
	exit 1;
else
	echo "${green}[OK]:${reset} docker version is correct, expected: $DOCKER, current: `docker --version`"
fi

echo "================================================================================"
echo "Validating node version..."
command -v node > /dev/null 2>&1 || { echo "${red}[ER]:${reset} I requiere node but it's not installed."; exit 1; }
NODEVERSION=`node --version|grep $NODE`
if [ "$NODEVERSION" == "" ]; then
	echo "${red}[ER]:${reset} node version isn't correct, expected: $NODE, current: `node --version`"
	exit 1;
else
	echo "${green}[OK]:${reset} node version is correct, expected: $NODE, current: `node --version`"
fi

#echo "================================================================================"
#echo "Validating vue-cli version..."
#command -v vue > /dev/null 2>&1 || { echo "${red}[ER]:${reset} I requiere vue but it's not installed."; exit 1; }
#VUECLIVERSION=`vue --version|grep $VUECLI`
#if [ "$VUECLIVERSION" == "" ]; then
#	echo "${red}[ER]:${reset} vue version isn't correct, expected: $VUECLI, current: `vue --version`"
#	exit 1;
#else
#	echo "${green}[OK]:${reset} vue version is correct, expected: $VUECLI, current: `vue --version`"
#fi