#!/bin/sh
#
# 2017 ungleich GmbH (cdist at ungleich.ch)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#

os=$(cat "$__global/explorer/os")
if [ ! "$os" = "debian" ]
then
    echo "OS $os is currently not supported." >&2
    exit 1
fi
os_version=$(cat "$__global/explorer/os_version")
case "$os_version" in
    8*)
        :
    ;;
    *)
        echo "Unsupported version $os_version of $os." >&2
        exit 1
    ;;
esac

db_pass=$(cat "$__object/parameter/db-pass")
db_user=$(cat "$__object/parameter/db-user")
db_name=$(cat "$__object/parameter/db-name")
domain="$(cat "$__object/parameter/domain")"
dh="$(cat "$__object/parameter/dh")"



# Install packages
for package in php7.0-common php7.0-gd php7.0-json php7.0-pgsql php7.0-curl \
			   php7.0-intl php7.0-mcrypt php7.0-imagick \
               php7.0-zip php7.0-apcu php7.0-mbstring php7.0-xml php7.0-fpm \
               nginx
    do require="__apt_update_index" __package $package --state=present
done

__package postgresql --state=present
__package curl --state=present

# Configure packages 
## Php 7 
__apt_key_uri dotdeb --uri https://www.dotdeb.org/dotdeb.gpg
require="__apt_key_uri/dotdeb" __apt_source dotdeb --uri http://packages.dotdeb.org \
                                                   --distribution jessie \
                                                   --component all

require="__apt_source/dotdeb" __apt_update_index

require="__package/php7.0-fpm" __file /etc/php/7.0/fpm/pool.d/www.conf \
    --owner root --group root --mode 644 --source "$__type/files/fpm.conf"



## Nginx
#require="__package/nginx" __file /etc/nginx/sites-enabled/nextcloud --owner www-data \
#    --group www-data --mode 755 --source "$__type/files/nextcloud.nginx"

################################################################################
# create base / switch to type dir
#
mkdir "$__object/files"
cd  "$__type/files"


################################################################################
# SSL / HTTPs configuration
#
if [ -f "$__object/parameter/ssl" ]; then
    ssl_base="$__type/files/ssl"

    # Select the ssl certificate + key
    if [ -f "$__object/parameter/ssl-name" ]; then
        ssl_name="$(cat "$__object/parameter/ssl-name")"
    else
        echo "Please select ssl certificate" >&2
        exit 1
    fi
    
    
    ssl_cert="/etc/ssl/certs/${ssl_name}.crt"
    ssl_key="/etc/ssl/private/${ssl_name}.key"

    # Copy SSL certificates
    require="__package/nginx" __link /etc/nginx/ssl.crt \
        --source "$ssl_cert" --type symbolic

    require="__package/nginx" __link /etc/nginx/ssl.key \
        --source "$ssl_key" --type symbolic

    cat nginx-header nginx-header-https nginx-header-server_name nginx-header-generic $config_file $custom_config nginx-footer > "$__object/files/nginx-https"

    require="__package/nginx" __file "$nginx_https" \
        --source "$__object/files/nginx-https"

# SSL with Let's Encrypt
# This only added LE to the configuration file. You need a LE cdist type,too.
elif [ -f "$__object/parameter/letsencrypt" ]; then
    ssl_base="$__type/files/letsencrypt"

    if [ -f "$__object/parameter/domain" ]; then
        domain="$(cat "$__object/parameter/domain")"
    else
        echo "Please add a valid domain" >&2
        exit 1
    fi
    
    # Copy SSL certificates
    require="__package/nginx" __link /etc/nginx/ssl.crt \
        --source /etc/letsencrypt/live/"$domain"/fullchain.pem --type symbolic

    require="__package/nginx" __link /etc/nginx/ssl.key \
        --source /etc/letsencrypt/live/"$domain"/privkey.pem --type symbolic

    require="__package/nginx" __link /etc/nginx/chain.pem \
        --source /etc/letsencrypt/live/"$domain"/cert.pem --type symbolic

    cat nginx-header nginx-header-https-letsencrypt > "$__object/files/nginx-https"
    echo "    server_name= "$domain";" >> "$__object/files/nginx-https" 
    cat  nginx-header-generic $config_file $custom_config nginx-footer >> "$__object/files/nginx-https"

    # create random 48 bit file as ticketkey    
    head -c 48 /dev/urandom  |  __file /etc/nginx/nginx-ticketkey --source -

    # create Diffie-Hellman key and store it under "$__files/pemfiles"

    require="__package/nginx" __ungleich_dhparam --keysize $dh --destination "$__files/pemfiles" "$__target_host"
    require="__ungleich_dhparam/$__target_host" __file /etc/nginx/dhparam.pem --source "$__files/pemfiles/"$__target_host"_dhparam.pem"

    require=""__package/nginx" __file "$nginx_https" \
        --owner www-data --group www-data --mode 755 \
        --source "$__object/files/nginx-https""
fi


## Postgres
require="__package/postgresql" __postgres_role "${db_user}" --password "${db_pass}"\
                                                            --login --createdb 
                                                         
require="__package/postgresql __postgres_role/${db_user}" __postgres_database "${db_name}"\
                                                          --owner "${db_user}" --state present


# Start on boot 
require="__package/postgresql" __start_on_boot postgresql
require="__package/nginx" __start_on_boot nginx
require="__package/php7.0-fpm" __start_on_boot php7.0-fpm