#!/bin/bash

# Exit on command errors and treat unset variables as an error
set -eu

# Source YunoHost helpers
source /usr/share/yunohost/helpers
source future.sh
source common.sh

readonly app=$YNH_APP_INSTANCE_NAME

# Retrieve arguments
readonly domain=$YNH_APP_ARG_DOMAIN
#readonly path=$YNH_APP_ARG_PATH
readonly path=/

readonly admin=$YNH_APP_ARG_ADMIN
readonly email=$YNH_APP_ARG_EMAIL


readonly isp_name=$YNH_APP_ARG_ISP_NAME
readonly isp_site=$YNH_APP_ARG_ISP_SITE
readonly secret=$(ynh_string_random 24) # A bug don't allow to do random string bigger than 24


# Check if admin exists
ynh_user_exists $admin \
    || ynh_die "Wrong admin"

function configure_app()
{
    # Check domain/path availability
    sudo yunohost app checkurl "${domain}${path}" -a "$app" \
        || ynh_die "Path not available: ${domain}${path}"

    ynh_app_setting_set "$app" admin "$admin"
    ynh_app_setting_set "$app" email "$email"
    ynh_app_setting_set "$app" isp_name "$isp_name"
    ynh_app_setting_set "$app" isp_site "$isp_site"
    ynh_app_setting_set "$app" secret "$secret"
}

function init_db()
{
    # Generate random password
    db_name=$app
    db_user=$app
    db_pwd=$(ynh_string_random)

    # Initialize database and store mysql password for upgrade
    ynh_mysql_create_db $db_name $db_user $db_pwd
    ynh_app_setting_set "$app" mysqlpassword "$db_pwd"
}

function install_from_sources()
{
    $final_path/venv/bin/pip install "pip>=1.5.6"

    $final_path/venv/bin/pip install gunicorn
    $final_path/venv/bin/pip install -r $final_path/requirements.txt
    $final_path/venv/bin/pip install django-auth-ldap
    #$final_path/venv/bin/pip install mysqlclient

    prefix="${path#"/"}/"
    prefix=${prefix%"/"}
    # Configuration Django
    sed -i "s@YNH_APP_ARG_ADMIN@$admin@g" ../conf/local.py
    sed -i "s@YNH_APP_ARG_DOMAIN@$domain@g" ../conf/local.py
    sed -i "s@YNH_APP_ARG_PATH@$path@g" ../conf/local.py
    sed -i "s@YNH_APP_PREFIX@$prefix@g" ../conf/local.py
    sed -i "s#YNH_APP_ARG_EMAIL#$email#g" ../conf/local.py
    sed -i "s#YNH_APP_SECRET_KEY#$secret#g" ../conf/local.py
    sed -i "s#YNH_APP_ARG_ISP_NAME#$isp_name#g" ../conf/local.py
    sed -i "s#YNH_APP_ARG_ISP_SITE#$isp_site#g" ../conf/local.py
    sed -i "s#YNH_APP_STATIC_ROOT#$final_path/static#g" ../conf/local.py
#    sed -i "s#YNH_DB_NAME#$db_name#g" ../conf/local.py
#    sed -i "s#YNH_DB_USER#$db_user#g" ../conf/local.py
#    sed -i "s#YNH_DB_PASSWORD#$db_pwd#g" ../conf/local.py
    sudo cp ../conf/local.py $final_path/$app/settings_local.py

    # Set production
    sudo ln -s $final_path/$app/static $final_path/static

    # Set permissions
    sudo useradd $app -d $final_path || echo "User already exists"
    sudo chown -R $app:www-data $final_path


    pushd $final_path
    $final_path/venv/bin/python manage.py migrate --noinput
    $final_path/venv/bin/python manage.py collectstatic --noinput
    popd 
    # Set permissions to directory
    sudo chown $app:www-data -R $final_path
}

function configure_log()
{
    # Log folder
    sudo mkdir -p /var/log/$app
    sudo chown -R $app /var/log/$app
    sudo chgrp -R www-data /var/log/$app
}

function configure_gunicorn()
{
    # Service gunicorn
    sudo sed -i "s@YNH_APP_INSTANCE_NAME@$app@g" ../conf/gunicorn_config.py
    sudo sed -i "s@YNH_APP_INSTANCE_NAME@$app@g" ../conf/gunicorn.service
    sudo cp ../conf/gunicorn.service /etc/systemd/system/$app.service
    sudo systemctl daemon-reload
    sudo cp ../conf/gunicorn_config.py /opt/$app/
}

function configure_nginx_and_ssowat()
{
    # Reload Nginx and regenerate SSOwat conf
    sudo yunohost app addaccess $app -u $admin
    
    # Modify Nginx configuration file and copy it to Nginx conf directory
    sed -i "s@PATHTOCHANGE@$path@g" ../conf/nginx.conf
    sed -i "s@ALIASTOCHANGE@$final_path/@g" ../conf/nginx.conf
    sed -i "s@YNH_APP_INSTANCE_NAME@$app@g" ../conf/nginx.conf
    sudo cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/$app.conf

    ## Reload Nginx and regenerate SSOwat conf
    sudo service nginx reload
    sudo systemctl start $app
    sudo systemctl enable $app
    sudo yunohost service add $app -l /var/log/gunicorn/$app.log

    ynh_app_setting_set "$app" skipped_uris "/"
    sudo yunohost app ssowatconf
}

configure_app
#init_db
install_dependencies


    # Copy files to the right place
    final_path=/opt/$app
    ynh_setup_source $final_path
    
    # Install venv
    pip install virtualenv
    virtualenv $final_path/venv
    set +o nounset 
    source $final_path/venv/bin/activate
    set -o nounset


install_from_sources
configure_log
configure_gunicorn
configure_nginx_and_ssowat