#!/bin/bash


function read_variable(){ 
    readonly install_path=/usr/local/
    readonly install_tgz="redis-4.0.8.tar.gz"
    readonly install_name=`echo $install_tgz | sed 's/.tar.gz//g'`
    build_variable
}

function build_variable(){
    release_url="https://download.redis.io/releases/"
    install_repo="https://download.redis.io/releases/${install_tgz}"
    workdir=`pwd`
}

function help1(){
    echo -e "\033[01m"
    echo
    echo "$0 install"
    echo "$0 list"
    echo
    echo -e "\033[0m"
}

function list_redis(){
    curl $release_url 2>/dev/null  | awk -F">" '{print $2}' | grep redis | awk -F"<" '{print $1}'
}

function install_redis(){
    [ -f ${install_path}/${install_name} ] && echo "Path Exist! Exit" &&  exit 
    which wget  1> /dev/null
    [ $? -ne 0 ] && yum install wget -y 
    [ -f $install_tgz  ] || wget $install_repo
    [  ! -f $install_tgz  ] && echo "Download Error! Exit" &&  exit
    tar xf $install_tgz 
    cd $install_name 
    [ $? -ne 0  ] && echo "Lost Directory! Exit" && exit 
    yum install make gcc-c++ -y 
    make MALLOC=GCC
    make install 
    cd - &> /dev/null
    mv $install_name $install_path
    cd $install_path/$install_name 
    ln -sf `pwd`/src/redis-server /usr/local/sbin/ 
    ln -sf `pwd`/src/redis-cli /usr/local/sbin/
   
    # rewrite conf 
    cp redis.conf redis_bak.conf 
    cat redis_bak.conf  | grep -vw "^#" | grep -vw ^$ > redis.conf 
    echo -e "\033[32m\033[01mInstall [Redis] Success!\033[0m"
}


case $1 in
"install")
    read_variable 
    install_redis
;;
"list")
    read_variable
    list_redis
;;
*)
    help1
;;
esac