#!/bin/bash

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

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

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

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

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

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
is_public=$YNH_APP_ARG_IS_PUBLIC
password=$YNH_APP_ARG_PASSWORD

app=$YNH_APP_INSTANCE_NAME

# Secret key for cookies encryption.
secret_key=$(ynh_string_random --length=32)

#=================================================
# 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=$app --key=secret_key --value=$secret_key

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=3

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"

#=================================================
# CREATE A MYSQL DATABASE
#=================================================
ynh_script_progression --message="Creating a MySQL database..." --weight=1

db_name=$(ynh_sanitize_dbid --db_name=$app)
db_user=$db_name
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)

#=================================================
# SPECIFIC SETUP
#=================================================
# BUILD VENV
#=================================================
ynh_script_progression --message="Building venv..." --weight=6

ynh_app_setting_set --app=$app --key=final_path --value=$final_path

__ynh_python_venv_setup --venv_dir="$final_path/venv" --packages "${pip_dependencies[*]}"
python_venv_site_packages=$(__ynh_python_venv_get_site_packages_dir -d "$final_path/venv")

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
## Needs $python_venv_site_packages
ynh_add_nginx_config

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

#run source in a 'sub shell'
(
	set +o nounset
	source "${final_path}/venv/bin/activate"
	set -o nounset
	python3 ../conf/hash_generator.py $password > ${final_path}/key.txt
)

hashed_password=$(cat $final_path/key.txt)
ynh_secure_remove --file="$final_path/key.txt"
ynh_app_setting_set --app=$app --key=hashed_password --value=$hashed_password

ynh_add_config --template="../conf/gunicorn.conf.py" --destination="$final_path/gunicorn.conf.py"
chmod 640 "$final_path/gunicorn.conf.py"
chown $app:$app "$final_path/gunicorn.conf.py"

# Allows to comment some config lines if not using sub path
sub_path_only="$(if [[ "$path_url" == "/" ]]; then echo '# ' ; else echo ''; fi)"

ynh_add_config --template="../conf/ihatemoney.cfg" --destination="$final_path/ihatemoney.cfg"
chmod 640 "$final_path/ihatemoney.cfg"
chown $app:$app "$final_path/ihatemoney.cfg"

# Configure log directory
mkdir -p "/var/log/$app"
chown -R $app:$app "/var/log/$app"

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

# Create a dedicated systemd config
ynh_add_systemd_config

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

yunohost service add $app --description="$app daemon for IHateMoney" --log=systemd

#=================================================
# 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" --line_match="Listening at"

# line_match isn't enough because ihatemoney may stop if database upgrades
for _ in {1..20}; do
	test -S /tmp/budget.gunicorn_$app.sock && break
	sleep 1
done

#=================================================
# 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