#!/usr/bin/env bash

# -----------------------------------------------------------------------------------------------------
# 安装 Mysql 脚本
# 仅适用于 CentOS7 发行版本
# @author: Zhang Peng
# -----------------------------------------------------------------------------------------------------

# ------------------------------------------------------------------------------ env

# Regular Color
export ENV_COLOR_BLACK="\033[0;30m"
export ENV_COLOR_RED="\033[0;31m"
export ENV_COLOR_GREEN="\033[0;32m"
export ENV_COLOR_YELLOW="\033[0;33m"
export ENV_COLOR_BLUE="\033[0;34m"
export ENV_COLOR_MAGENTA="\033[0;35m"
export ENV_COLOR_CYAN="\033[0;36m"
export ENV_COLOR_WHITE="\033[0;37m"
# Bold Color
export ENV_COLOR_B_BLACK="\033[1;30m"
export ENV_COLOR_B_RED="\033[1;31m"
export ENV_COLOR_B_GREEN="\033[1;32m"
export ENV_COLOR_B_YELLOW="\033[1;33m"
export ENV_COLOR_B_BLUE="\033[1;34m"
export ENV_COLOR_B_MAGENTA="\033[1;35m"
export ENV_COLOR_B_CYAN="\033[1;36m"
export ENV_COLOR_B_WHITE="\033[1;37m"
# Reset Color
export ENV_COLOR_RESET="$(tput sgr0)"

# status
export ENV_YES=0
export ENV_NO=1
export ENV_SUCCEED=0
export ENV_FAILED=1

# ------------------------------------------------------------------------------ functions

# 显示打印日志的时间
SHELL_LOG_TIMESTAMP=$(date "+%Y-%m-%d %H:%M:%S")
# 那个用户在操作
USER=$(whoami)

redOutput() {
    echo -e "${ENV_COLOR_RED} $@${ENV_COLOR_RESET}"
}

greenOutput() {
    echo -e "${ENV_COLOR_B_GREEN} $@${ENV_COLOR_RESET}"
}

yellowOutput() {
    echo -e "${ENV_COLOR_YELLOW} $@${ENV_COLOR_RESET}"
}

blueOutput() {
    echo -e "${ENV_COLOR_BLUE} $@${ENV_COLOR_RESET}"
}

magentaOutput() {
    echo -e "${ENV_COLOR_MAGENTA} $@${ENV_COLOR_RESET}"
}

cyanOutput() {
    echo -e "${ENV_COLOR_CYAN} $@${ENV_COLOR_RESET}"
}

whiteOutput() {
    echo -e "${ENV_COLOR_WHITE} $@${ENV_COLOR_RESET}"
}

printInfo() {
    echo -e "${ENV_COLOR_B_GREEN}[INFO] $@${ENV_COLOR_RESET}"
}

printWarn() {
    echo -e "${ENV_COLOR_B_YELLOW}[WARN] $@${ENV_COLOR_RESET}"
}

printError() {
    echo -e "${ENV_COLOR_B_RED}[ERROR] $@${ENV_COLOR_RESET}"
}

callAndLog () {
    $*
    if [[ $? -eq ${ENV_SUCCEED} ]]; then
        printInfo "$@"
        return ${ENV_SUCCEED}
    else
        printError "$@ EXECUTE FAILED"
        return ${ENV_FAILED}
    fi
}

# ------------------------------------------------------------------------------ main

printInfo ">>>> install mysql begin"

command -v wget > /dev/null 2>&1 || {
	printError "Require wget but it's not installed"
	exit 1;
}
command -v rpm > /dev/null 2>&1 || {
	printError "Require rpm but it's not installed"
	exit 1;
}
command -v yum > /dev/null 2>&1 || {
	printError "Require yum but it's not installed"
	exit 1;
}

printInfo ">>>> install mysql by rpm"
wget https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm
sudo rpm -Uvh mysql80-community-release-el7-3.noarch.rpm
sudo yum install mysql-community-server

printInfo ">>>> modify my.cnf"
cp /etc/my.cnf /etc/my.cnf.bak
wget -N https://gitee.com/turnon/linux-tutorial/raw/master/codes/linux/soft/config/mysql/my.cnf -O /etc/my.cnf

printInfo ">>>> create mysql log file"
mkdir -p /var/log/mysql
touch /var/log/mysql/mysql.log
touch /var/log/mysql/mysql_slow_query_log.log
chmod 777 /var/log/mysql/mysql.log
chmod 777 /var/log/mysql/mysql_slow_query_log.log
chown -R mysql:mysql /var/log/mysql

printInfo ">>>> modify limits.conf"
cat >> /etc/security/limits.conf << EOF
mysql soft nofile 65536
mysql hard nofile 65536
EOF

printInfo ">>>> start mysqld"
systemctl enable mysqld
systemctl start mysqld
systemctl daemon-reload

printInfo ">>>> 管理员密码如下，请登录 mysql 后重置新密码："
password=$(grep "password" /var/log/mysql/mysql.log | awk '{print $NF}')
blueOutput "${password}"

printInfo "<<<< install mysql success"