#!/bin/bash

# Usage: basic-install [OPTIONS] file
#
# Index:
#
# 0.- Initial Setup and Functions
# 1.- Set your server correctly
# 2.- Install latest WordPress version
# 3.- Set up anti-spam and security measures
# 4.- Install theme of your choice
# 5.- Install a SEO plugin
# 6.- Install contact form plugin
# 7.- Setup your emails and show you how to connect
# 8.- Resources

#####################################################################
# 0.- Initial Setup and Functions
#####################################################################

## 1. Functions

# Shows a help message
usage()
{
cat << EOF
Usage: basic_install [OPTIONS]

 -h	Show this message
     -------------
 -m 		Set MultiSite
 -l <LANG>	Set language
     -------------
 -H <HOST>	Host
 -u <USER>	MySQL user
 -p <PASS>	MySQL password
     -------------
 -F <NAME>	User First Name
 -L <NAME>      User Last Name
 -E <EMAIL>	User Email
     -------------
 -U <URL>	URL
 -t <TITLE>	Title
 -T <THEME>	Theme
EOF
}

# Generates a random password
mkpw(){ < /dev/urandom tr -dc '[:alnum:]' | head -c${1:-16};echo;}

# 2. Global variables
USER_FIRST_NAME=
USER_LAST_NAME=
USER_LOGIN=
USER_EMAIL=
USER_PASS=$(mkpw 8)

DB_NAME=$(mkpw 8)
DB_USER=$(mkpw 8)
DB_PASS=$(mkpw 8)
DB_HOST=

MYSQL_USER=
MYSQL_PASS=

WP_ADMIN_NAME=$(mkpw 8)
WP_ADMIN_PASSWORD=$(mkpw 8)
WP_PREFIX=$(mkpw 4)

URL=
TITLE=
THEME=
LANGUAGE=


while getopts ":hml:u:p:H:F:L:E:U:t:T:" opt; do
	case $opt in
		h)
			usage
			exit 0
			;;
		m)
			MULTISITE='yes'
			;;
		l)
			LANGUAGE=$OPTARG
			;;
		u)
			MYSQL_USER=$OPTARG
			;;
		p)
			MYSQL_PASS=$OPTARG
			;;
		H)
			DB_HOST=$OPTARG
			;;
		F)
			USER_FIRST_NAME=$OPTARG
			;;
		L)
			USER_LAST_NAME=$OPTARG
			;;
		E)
			USER_EMAIL=$OPTARG
			;;
		U)
			URL=$OPTARG
			;;
		t)
			TITLE=$OPTARG
			;;
		T)
			THEME=$OPTARG
			;;
		\?)
			echo "Invalid option: -$OPTARG" >&2
			exit 1
			;;
		:)
			echo "Option -$OPTARG requires an argument." >&2
			exit 1
			;;
	esac
done

# 3. Initial setup
echo "
[client]
user=$MYSQL_USER
password=$MYSQL_PASS" > /tmp/mysql-opts

#####################################################################
# 1.- Set your server correctly
#####################################################################

#####################################################################
# 2.- Install latest WordPress version
#####################################################################

# 1. Download WordPress and extract with wp-cli
if [ $LANGUAGE != "" ]
	then wp core download --locale=$LANGUAGE
	else wp core download
fi

###########


# 2. Create the Database and User
echo 'Creating the Database and User...'
Q1="CREATE DATABASE IF NOT EXISTS $DB_NAME;"
Q2="GRANT ALL PRIVILEGES ON $DB_NAME.* TO '$DB_USER'@'$DB_HOST' IDENTIFIED BY '$DB_PASS';"
Q3="FLUSH PRIVILEGES;"
SQL="${Q1}${Q2}${Q3}"

# Run SQL script
mysql --defaults-file=/tmp/mysql-opts -e "$SQL"

# Remove mysql-opts file
rm /tmp/mysql-opts

###########


# 3. Set up wp-config.php
echo 'Setting up wp-config.php...'
mv wp-config-sample.php wp-config.php

sed \
	-i \
	-e "s/\(define('DB_NAME', '\)[a-z_]*\(');\)/\1"$DB_NAME"\2/" \
	-e "s/\(define('DB_USER', '\)[a-z_]*\(');\)/\1"$DB_USER"\2/" \
	-e "s/\(define('DB_PASSWORD', '\)[a-z_]*\(');\)/\1"$DB_PASS"\2/" \
	-e "s/\(define('DB_HOST', '\)[a-z_]*\(');\)/\1"$DB_HOST"\2/" \
	-e s/\'wp_\'/\'$WP_PREFIX\_\'/ wp-config.php

if [ $MULTISITE = 'yes' ]
	then sed -i  '/Feliz/ i \
		define('\'ALLOW_WP_MULTISITE\'', true)' wp-config.php
fi

###########


# 4. Run the Install Script
echo 'Running the Install Script...'
if [ ! $(wp core is-installed) ]
then
	wp core install \
		--url=$URL \
	       	--title=$TITLE \
		--admin_name=$WP_ADMIN_NAME \
		--admin_email=$USER_EMAIL \
		--admin_password=$WP_ADMIN_PASSWORD
fi


#####################################################################
# 3.- Set up anti-spam and security measures
#####################################################################

# 1. Add a user with author privileges
#wp user create $USER_LOGIN $USER_EMAIL2 --user_pass=$USER_PASS --role=author

# 2. Choose a strong password (see section 0.2 and 2.4)
# .... done

# 3. Secure Your Password
# : Search Brute Force Attack Plugin

# 4. Always update WordPress (see section 8.1)
# .... done

# 5. Hide WordPress Version
# 6. Change File Permisions
# 7. Whitelist
# 8. Backup
# 9. Hide Your Plugins
# 10. Analyze Server Logs

#wp plugin activate akismet

#####################################################################
# 4.- Free Theme Bundle
#####################################################################
if [ $THEME != ""]
then
	wp theme install $THEME --activate
fi

#####################################################################
# 5.- Install All-in-one SEO Pack
#####################################################################
#wp plugin install all-in-one-seo-pack --activate

#####################################################################
# 6.- Install Contact Form 7
#####################################################################
#wp plugin install contact-form-7 --activate

#####################################################################
# 7.- Setup your emails and show you how to connect
#####################################################################

#####################################################################
# 8.- Finsihing up
#####################################################################

# 1. Removing wp-admin/install.php
# K.Viswanathan => Step #6
rm wp-admin/install.php

# 2. Complete User Profile
# K.Viswanathan => Step #7
wp user update 1 \
	--first-name=$USER_FIRST_NAME \
	--last-name=$USER_LAST_NAME

# 3. Prepare document for the user

# 2. Prepare document for admin
cat > results.txt <<EOF
= WP Admin =
WP Admin Login: $WP_ADMIN_NAME
WP Admin Password: $WP_ADMIN_PASSWORD
EOF
#####################################################################
# 9.- Resources
#####################################################################
# - Karthnik Viswanathan. 20 Steps to a Flexible and Secure WordPress
# installation. WpTuts+

# - 10 Steps to Securing Your WordPress Installation