#!/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.
	true
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# LOAD SETTINGS
#=================================================

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
path_url=$(ynh_app_setting_get $app path)
is_public=$(ynh_app_setting_get $app is_public)
port=$(ynh_app_setting_get $app port)
final_path=$(ynh_app_setting_get $app final_path)
secret=$(ynh_app_setting_get $app secret)
db_name=$(ynh_app_setting_get $app db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get $app psqlpwd)
theme=$(ynh_app_setting_get $app theme)
hashed_password=$(ynh_app_setting_get $app hashed_password)

#=================================================
# FIX OLD THINGS
#=================================================

if [ "$is_public" = "Yes" ]; then
	ynh_app_setting_set $app is_public 1	# Fixe is_public en booléen
	is_public=1
elif [ "$is_public" = "No" ]; then
	ynh_app_setting_set $app is_public 0
	is_public=0
fi

if [ "${#final_path}" -eq 0 ]
then	# Si final_path n'est pas renseigné dans la config yunohost, cas d'ancien script, code final_path en dur
	final_path=/var/www/$app
fi

if [ -z "$db_pwd" ]; then
	db_pwd=$(ynh_app_setting_get $app db_pwd)	# Fix old db_pwd
	if [ -z "$db_pwd" ]; then
		db_name=$(ynh_sanitize_dbid "$app")
		db_user=$db_name
		# Initialize database and store postgres password for upgrade
		ynh_psql_setup_db "$db_name" "$db_user"
		ynh_app_setting_set "$app" db_name "$db_name"
		db_pwd=$(ynh_app_setting_get $app psqlpwd) # Password created in ynh_psql_setup_db function
	else
		ynh_app_setting_delete $app db_pwd
		ynh_app_setting_set $app psqlpwd $db_pwd
	fi
fi

if [ -z "$theme" ]; then
	theme="milligram"
	ynh_app_setting_set $app theme $theme
fi

if [ -z "$hashed_password" ]; then
	# Generate random password
	password=$(openssl rand -hex 8)
	hashed_password=$(echo -n $password | sha256sum | cut -d' ' -f1)

	echo "The new version of LSTU provide an admin and a stats area which required a password.

This password is: $password" > mail_to_send

	ynh_send_readme_to_admin --app_message="mail_to_send" --type="upgrade"
	
	ynh_app_setting_set $app hashed_password $hashed_password
fi

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

ynh_install_app_dependencies build-essential libssl-dev zlib1g-dev libpng-dev libpq-dev memcached postgresql

ynh_setup_source "$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# SETUP LSTU
#=================================================

ynh_backup_if_checksum_is_different "$final_path/lstu.conf"
cp ../conf/lstu.conf.template "${final_path}/lstu.conf"
ynh_replace_string "__DOMAIN__" "$domain" "${final_path}/lstu.conf"
ynh_replace_string "__PATH__" "$path_url" "${final_path}/lstu.conf"
ynh_replace_string "__PORT__" "$port" "${final_path}/lstu.conf"
ynh_replace_string "__DB_NAME__" "$db_name"  "${final_path}/lstu.conf"
ynh_replace_string "__DB_USER__" "$db_user"  "${final_path}/lstu.conf"
ynh_replace_string "__DB_PWD__" "$db_pwd" "${final_path}/lstu.conf"
ynh_replace_string "__SELECTED_THEME__" "$theme" "${final_path}/lstu.conf"
ynh_replace_string "__PASSWORD_HASHED__" "$hashed_password" "${final_path}/lstu.conf"

ynh_replace_string "__SECRET__" "$secret" "${final_path}/lstu.conf"
ynh_store_file_checksum "${final_path}/lstu.conf"

#=================================================
# SECURING FILES AND DIRECTORIES
#=================================================

chown -R www-data $final_path

#=================================================
# SETUP SYSTEMD
#=================================================

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# Install lstu's dependencies via carton
#=================================================

pushd $final_path
carton install --deployment --without=sqlite --without=mysql
popd

#=================================================
# SETUP LOGROTATE
#=================================================

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

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

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

#=================================================
# RESTART LSTU
#=================================================

ynh_systemd_action -n $app -a reload -l "Reloaded Shortened URLs service." -p "systemd"

#=================================================
# SETUP SSOWAT
#=================================================

# Make app public or private
ynh_app_setting_set $app skipped_uris "/"
if [ $is_public -eq 0 ];
then	# If the app is private, only the shortened URLs are publics
	if [ "$path_url" == "/" ]; then
		path_url=""
	fi
	ynh_app_setting_set $app protected_regex "$domain$path_url/login$","$domain$path_url/logout$","$domain$path_url/api$","$domain$path_url/extensions$","$domain$path_url/stats$","$domain$path_url/d/.*$","$domain$path_url/a$","$domain$path_url/$"
else
	ynh_app_setting_delete $app protected_regex
fi

config_file_is_public

#=================================================
# RELOAD NGINX
#=================================================

systemctl reload nginx
yunohost app ssowatconf