#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
	### Remove this function if there's nothing to clean before calling the remove script.
	read
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

export domain=$YNH_APP_ARG_DOMAIN
export path_url=/
export admin=$YNH_APP_ARG_ADMIN
export email=$YNH_APP_ARG_EMAIL
export isp_name=$YNH_APP_ARG_ISP_NAME
export isp_site=$YNH_APP_ARG_ISP_SITE
is_public=1
export secret=$(ynh_string_random 24)

export app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..."

export final_path=/opt/$app
test ! -e "$final_path" || ynh_die --message="This path already contains a folder"

# Register (book) web path
ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..."

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url
ynh_app_setting_set --app=$app --key=is_public --value=$is_public
ynh_app_setting_set --app=$app --key=admin --value=$admin
ynh_app_setting_set --app=$app --key=email --value=$email
ynh_app_setting_set --app=$app --key=isp_name --value=$isp_name
ynh_app_setting_set --app=$app --key=isp_site --value=$isp_site

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..."

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DATABASE
#=================================================
ynh_script_progression --message="Creating a MySQL database..."

ynh_psql_test_if_first_run

export db_name=$(ynh_sanitize_dbid --db_name=$app)
export db_user=$db_name
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name
export db_pwd

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..."

ynh_app_setting_set --app=$app --key=final_path --value=$final_path
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring nginx web server..."

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..."

# Create a system user
ynh_system_user_create --username=$app

#=================================================
# SPECIFIC SETUP
#=================================================
# PYTHON DEPENDENCIES
#=================================================

ynh_script_progression --message="Installing more dependencies..."
virtualenv "$final_path/venv"
(
	set +o nounset
	source "${final_path}/venv/bin/activate"
	set -o nounset
	$final_path/venv/bin/pip install --upgrade pip
    $final_path/venv/bin/pip install gunicorn
    echo "django-auth-ldap<1.4" >> $final_path/requirements.txt
    $final_path/venv/bin/pip install -r $final_path/requirements.txt
)

#=================================================
# CONFIGURATION DJANGO
#=================================================

ynh_script_progression --message="Configuring application..."

export prefix="${path_url#"/"}/"
prefix=${prefix%"/"}
ynh_render_template ../conf/local.py.j2 "$final_path/coin/settings_local.py"
ynh_store_file_checksum --file="$final_path/coin/settings_local.py"

#=================================================
# SERVE STATIC FILES IN PRODUCTION MODE
#=================================================
ln -s $final_path/$app/static $final_path/static

#=================================================
# SETUP DATABASE
#=================================================
# Set permissions
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
chown $app:www-data -R $final_path

#================================================
# CONFIGURE LOG DIR
#================================================
mkdir -p /var/log/$app
chown -R $app /var/log/$app
chgrp -R www-data /var/log/$app

#================================================
# SETUP GUNICORN
#================================================
ynh_replace_string --match_string="__YNH_APP_INSTANCE_NAME__" --replace_string="$app" --target_file="../conf/gunicorn_config.py"
cp ../conf/gunicorn_config.py $final_path/
ynh_store_file_checksum --file="$final_path/gunicorn_config.py"

chown $app:www-data $final_path/gunicorn_config.py

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..."

# Create a dedicated systemd config
ynh_add_systemd_config


#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

### For security reason, any app should set the permissions to root: before anything else.
### Then, if write authorization is needed, any access should be given only to directories
### that really need such authorization.

# Set permissions to app files
chown -R $app:www-data $final_path


#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

yunohost service add $app --description "$app daemon" --log "/var/log/$app/$app.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..."

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring SSOwat..."

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# unprotected_uris allows SSO credentials to be passed anyway.
	ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading nginx web server..."

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Installation of $app completed" --last