#!/usr/bin/env bash

VERSION=`grep version jilo-web.conf.php | cut -d "'" -f 4`

# main install function
function install() {

    # enter domain
    read -p "Domain name for the web service [localhost]: " DOMAIN
    DOMAIN=${DOMAIN:-localhost}

    # enter folder
    read -p "Web subfolder [jilo-web]: " WEB_DIR
    WEB_DIR=${WEB_DIR:-jilo-web}

    INSTALL_DIR="/opt/jilo-web/public_html"
    DOC_DIR="/opt/jilo-web/doc"
    ETC_DIR="/opt/jilo-web/etc"

    mkdir -p $INSTALL_DIR
    cp -r ./public_html/* $INSTALL_DIR

    mkdir -p $DOC_DIR
    cp CHANGELOG.md $DOC_DIR
    cp LICENSE $DOC_DIR
    cp README.md $DOC_DIR
    cp TODO.md $DOC_DIR
    cp config.apache $DOC_DIR
    cp config.nginx $DOC_DIR

    mkdir -p $ETC_DIR
    cp jilo-web.conf.php $ETC_DIR
    cp jilo-web.schema $ETC_DIR

    #FIXME
    #mkdir -p "jilo-web-$VERSION/usr/share/man/man8"
    #cp ../man-jilo-web.8 "jilo-web-$VERSION/usr/share/man/man8/jilo-web.8"

    # we need a webserver, check for Apache and Nginx
    WEB_SERVER=""

    # install and enable apache vhost
    if dpkg-query -W -f='${status}' apache2 2>/dev/null | grep -q "ok installed"; then
        WEB_SERVER="apache2"
        cp "${DOC_DIR}/config.apache" /etc/apache2/sites-available/jilo-web.conf
        sed -i -e "s/\$DOMAIN/$DOMAIN/g" /etc/apache2/sites-available/jilo-web.conf
        # there is '/' in INSTALL_DIR, we use '%'
        sed -i -e "s%\$INSTALL_DIR%$INSTALL_DIR%g" /etc/apache2/sites-available/jilo-web.conf
        a2ensite jilo-web.conf
        /etc/init.d/apache2 reload

    # install and enable nginx vhost
    elif dpkg-query -W -f='${status}' nginx 2>/dev/null | grep -q "ok installed"; then
        WEB_SERVER="nginx"
        cp "${DOC_DIR}/config.nginx" /etc/nginx/sites-available/jilo-web
        sed -i -e "s/\$DOMAIN/$DOMAIN/g" /etc/nginx/sites-available/jilo-web
        # there is '/' in INSTALL_DIR, we use '%'
        sed -i -e "s%\$INSTALL_DIR%$INSTALL_DIR%g" /etc/nginx/sites-available/jilo-web
        ln -s /etc/nginx/sites-available/jilo-web /etc/nginx/sites-enabled/
        /etc/init.d/nginx reload
    else
        echo "Nginx or Apache is needed, please install one of them first."
        exit 1
    fi

    # permissions for web folder
    chown -R www-data:www-data "$INSTALL_DIR"
    chmod -R ug+rw "$INSTALL_DIR"

    echo 'Install finished.'
}


help="Jilo-Web deployment script
Usage:
    $0 [OPTION]
    Options:
        --install|-i - install Jilo-Web
        --help|-h - show this help message
        --version|-v - show version"

version="version $VERSION"


# called with an option
if [[ $1 ]]; then
    case $1 in
        -i | --install)
            install
            exit 0
            ;;
        -h | --help)
            echo -e "$help"
            exit 0
            ;;
        -v | --version)
            echo -e "$version"
            exit 0
            ;;
        *)
            echo "Invalid option: $1" >&2
            echo -e "$help"
            exit 1
            ;;
    esac

# called without any options, ask how to proceed
else
    read -p "Choose an option, blank for \"install\" [install | help | version]: " OPTION
    OPTION=${OPTION:-install}

    case $OPTION in
        install)
            install
            exit 0
            ;;
        help)
            echo -e "$help"
            exit 0
            ;;
        version)
            echo -e "$version"
            exit 0
            ;;
        *)
            echo "Invalid option: $1" >&2
            echo -e "$help"
            exit 1
            ;;
    esac
fi