#!/bin/bash
### Set Language
TEXTDOMAIN=virtualhost

### Set default parameters
action=$1
domain=$2
rootDir=$3
owner=$(who am i | awk '{print $1}')
apacheUser=$(ps -ef | egrep '(httpd|apache2|apache)' | grep -v root | head -n1 | awk '{print $1}')
email='webmaster@localhost'
sitesEnabled='/etc/apache2/sites-enabled/'
sitesAvailable='/etc/apache2/sites-available/'
userDir='/var/www/'
sitesAvailabledomain=$sitesAvailable$domain.conf

### don't modify from here unless you know what you are doing ####

if [ "$(whoami)" != 'root' ]; then
    echo $"You have no permission to run $0 as non-root user. Use sudo"
        exit 1;
fi

if [ "$action" != 'create' ] && [ "$action" != 'delete' ]
    then
        echo $"You need to prompt for action (create or delete) -- Lower-case only"
        exit 1;
fi

while [ "$domain" == "" ]
do
    echo -e $"Please provide domain. e.g.dev,staging"
    read domain
done

if [ "$rootDir" == "" ]; then
    rootDir=${domain//./}
fi

### if root dir starts with '/', don't use /var/www as default starting point
if [[ "$rootDir" =~ ^/ ]]; then
    userDir=''
fi

rootDir=$userDir$rootDir

if [ "$action" == 'create' ]
    then
        ### check if domain already exists
        if [ -e $sitesAvailabledomain ]; then
            echo -e $"This domain already exists.\nPlease Try Another one"
            exit;
        fi

        ### check if directory exists or not
        if ! [ -d $rootDir ]; then
            ### create the directory
            mkdir $rootDir
            ### give permission to root dir
            chmod 755 $rootDir
            ### write test file in the new domain dir
            if ! echo "<?php echo phpinfo(); ?>" > $rootDir/phpinfo.php
            then
                echo $"ERROR: Not able to write in file $rootDir/phpinfo.php. Please check permissions"
                exit;
            else
                echo $"Added content to $rootDir/phpinfo.php"
            fi
        fi

        ### create virtual host rules file
        if ! echo "
        <VirtualHost *:80>
            ServerAdmin $email
            ServerName $domain
            ServerAlias $domain
            DocumentRoot $rootDir
            <Directory />
                AllowOverride All
            </Directory>
            <Directory $rootDir>
                Options Indexes FollowSymLinks MultiViews
                AllowOverride all
                Require all granted
            </Directory>
            ErrorLog /var/log/apache2/$domain-error.log
            LogLevel error
            CustomLog /var/log/apache2/$domain-access.log combined
        </VirtualHost>" > $sitesAvailabledomain
        then
            echo -e $"There is an ERROR creating $domain file"
            exit;
        else
            echo -e $"\nNew Virtual Host Created\n"
        fi

        ### Add domain in /etc/hosts
        if ! echo "127.0.0.1    $domain" >> /etc/hosts
        then
            echo $"ERROR: Not able to write in /etc/hosts"
            exit;
        else
            echo -e $"Host added to /etc/hosts file \n"
        fi

        ### Add domain in /mnt/c/Windows/System32/drivers/etc/hosts (Windows Subsytem for Linux)
        if [ -e /mnt/c/Windows/System32/drivers/etc/hosts ]
        then
            if ! echo -e "\r127.0.0.1       $domain" >> /mnt/c/Windows/System32/drivers/etc/hosts
            then
                echo $"ERROR: Not able to write in /mnt/c/Windows/System32/drivers/etc/hosts (Hint: Try running Bash as administrator)"
            else
                echo -e $"Host added to /mnt/c/Windows/System32/drivers/etc/hosts file \n"
            fi
        fi

        if [ "$owner" == "" ]; then
            iam=$(whoami)
            if [ "$iam" == "root" ]; then
                chown -R $apacheUser:$apacheUser $rootDir
            else
                chown -R $iam:$iam $rootDir
            fi
        else
            chown -R $owner:$owner $rootDir
        fi

        ### enable website
        a2ensite $domain

        ### restart Apache
        /etc/init.d/apache2 reload

        ### show the finished message
        echo -e $"Complete! \nYou now have a new Virtual Host \nYour new host is: http://$domain \nAnd its located at $rootDir"
        exit;
    else
        ### check whether domain already exists
        if ! [ -e $sitesAvailabledomain ]; then
            echo -e $"This domain does not exist.\nPlease try another one"
            exit;
        else
            ### Delete domain in /etc/hosts
            newhost=${domain//./\\.}
            sed -i "/$newhost/d" /etc/hosts

            ### Delete domain in /mnt/c/Windows/System32/drivers/etc/hosts (Windows Subsytem for Linux)
            if [ -e /mnt/c/Windows/System32/drivers/etc/hosts ]
            then
                newhost=${domain//./\\.}
                sed -i "/$newhost/d" /mnt/c/Windows/System32/drivers/etc/hosts
            fi

            ### disable website
            a2dissite $domain

            ### restart Apache
            /etc/init.d/apache2 reload

            ### Delete virtual host rules files
            rm $sitesAvailabledomain
        fi

        ### check if directory exists or not
        if [ -d $rootDir ]; then
            echo -e $"Delete host root directory ? (y/n)"
            read deldir

            if [ "$deldir" == 'y' -o "$deldir" == 'Y' ]; then
                ### Delete the directory
                rm -rf $rootDir
                echo -e $"Directory deleted"
            else
                echo -e $"Host directory conserved"
            fi
        else
            echo -e $"Host directory not found. Ignored"
        fi

        ### show the finished message
        echo -e $"Complete!\nYou just removed Virtual Host $domain"
        exit 0;
fi