#!/bin/bash

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

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

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

ynh_clean_setup () {
	true
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

domain=$YNH_APP_ARG_DOMAIN
path_url="/"
is_public=$YNH_APP_ARG_IS_PUBLIC
project_name=$YNH_APP_ARG_PROJECT_NAME
contact_url=$YNH_APP_ARG_CONTACT_URL
logo=$YNH_APP_ARG_LOGO
favicon=$YNH_APP_ARG_FAVICON
publishable_key=$YNH_APP_ARG_PUBLISHABLE_KEY
secret_key=$YNH_APP_ARG_SECRET_KEY
prices=$YNH_APP_ARG_PRICES
secret=$(ynh_string_random --length=50)
csrf_key=$(ynh_string_random --length=50)

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=1

final_path=/var/www/$app
test ! -e "$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..." --weight=1

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=$app --key=project_name --value=$project_name
ynh_app_setting_set --app=$app --key=contact_url --value=$contact_url
ynh_app_setting_set --app=$app --key=logo --value=$logo
ynh_app_setting_set --app=$app --key=favicon --value=$favicon
ynh_app_setting_set --app=$app --key=publishable_key --value=$publishable_key
ynh_app_setting_set --app=$app --key=secret_key --value=$secret_key
ynh_app_setting_set --app=$app --key=prices --value=$prices
ynh_app_setting_set --app=$app --key=secret --value=$secret
ynh_app_setting_set --app=$app --key=csrf_key --value=$csrf_key

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..." --weight=1

# Find an available port
port=$(ynh_find_port --port=8102)
ynh_app_setting_set --app=$app --key=port --value=$port

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=1

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=1

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

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=1

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"

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC SETUP
#=================================================
# INSTALL PYTHON DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing Python dependencies..."

pushd $final_path
	python3 -m venv venv
	venv/bin/pip install --upgrade pip
	venv/bin/pip install -r requirements.txt
	venv/bin/pip install gunicorn
	mkdir -p /var/log/$app
	chown -R $app:www-data /var/log/$app
	chmod o-rwx /var/log/$app
	cat <<EOF >> wsgi.py 
from server import app

if __name__ == "__main__":
    app.run()
EOF
popd

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..."

ynh_add_config --template="../conf/gunicorn.py" --destination="$final_path/gunicorn.py"
ynh_add_config --template="../conf/settings.py" --destination="$final_path/settings.py"

for price in $(echo $prices | sed "s/,/ /"); do
    frequency=$(echo $price | cut -d/ -f1)
    currency=$(echo $price | cut -d/ -f2)
    price_id=$(echo $price | cut -d/ -f3)
    echo "DONATION['$frequency']['$currency'] = '$price_id'" >> "$final_path/settings.py"
done

ynh_store_file_checksum --file="$final_path/settings.py"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=1

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================
ynh_script_progression --message="Securing files and directories..."

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

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

yunohost service add $app --description="A simple donation form"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="systemd" --line_match="Started"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=1

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# Everyone can access the app.
	# The "main" permission is automatically created before the install script.
	ynh_permission_update --permission="main" --add="visitors"
fi


#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

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

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