#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

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

#=================================================
# RETRIEVE ARGUMENTS
#=================================================

old_domain=$YNH_APP_OLD_DOMAIN
old_path=$YNH_APP_OLD_PATH

new_domain=$YNH_APP_NEW_DOMAIN
new_path=$YNH_APP_NEW_PATH

app=$YNH_APP_INSTANCE_NAME

#=================================================
# LOAD SETTINGS
#=================================================
ynh_print_info "Loading installation settings..."

# Needed for helper "ynh_add_nginx_config"
final_path=$(ynh_app_setting_get $app final_path)

# Needed for lufi conf
port=$(ynh_app_setting_get $app port)
is_public=$(ynh_app_setting_get $app is_public)
db_name=$(ynh_app_setting_get "$app" db_name)
db_pwd=$(ynh_app_setting_get $app psqlpwd)
db_user=$db_name
secret=$(ynh_app_setting_get $app secret)
max_file_size=$(ynh_app_setting_get $app max_file_size)

#=================================================
# CHECK THE SYNTAX OF THE PATHS
#=================================================

test -n "$old_path" || old_path="/"
test -n "$new_path" || new_path="/"
new_path=$(ynh_normalize_url_path $new_path)
old_path=$(ynh_normalize_url_path $old_path)

#=================================================
# CHECK WHICH PARTS SHOULD BE CHANGED
#=================================================

change_domain=0
if [ "$old_domain" != "$new_domain" ]
then
	change_domain=1
fi

change_path=0
if [ "$old_path" != "$new_path" ]
then
	change_path=1
fi

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# MODIFY URL IN NGINX CONF
#=================================================
ynh_print_info "Updating nginx web server configuration..."

nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf

# Change the path in the nginx config file
if [ $change_path -eq 1 ]
then
	# Make a backup of the original nginx config file if modified
	ynh_backup_if_checksum_is_different "$nginx_conf_path"
	# Set global variables for nginx helper
	domain="$old_domain"
	path_url="$new_path"
	# Create a dedicated nginx config
	ynh_add_nginx_config max_file_size
fi

# Change the domain for nginx
if [ $change_domain -eq 1 ]
then
	# Delete file checksum for the old conf file location
	ynh_delete_file_checksum "$nginx_conf_path"
	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
	# Store file checksum for the new config file location
	ynh_store_file_checksum "/etc/nginx/conf.d/$new_domain.d/$app.conf"
fi

#=================================================
# SPECIFIC MODIFICATIONS
#=================================================
# SETUP LUFI
#=================================================
ynh_print_info "Configuring lufi..."

domain="$new_domain"
path_url="$new_path"

cp ../conf/lufi.conf.template "${final_path}/lufi.conf"
ynh_replace_string "__DOMAIN__" "$domain" "${final_path}/lufi.conf"
ynh_replace_string "__PATH__" "$path_url" "${final_path}/lufi.conf"
ynh_replace_string "__PORT__" "$port" "${final_path}/lufi.conf"
ynh_replace_string "__DB_NAME__" "$db_name"  "${final_path}/lufi.conf"
ynh_replace_string "__DB_USER__" "$db_user"  "${final_path}/lufi.conf"
ynh_replace_string "__DB_PWD__" "$db_pwd" "${final_path}/lufi.conf"
ynh_replace_string "__MAX_FILE_SIZE__" "$max_file_size" "${final_path}/lufi.conf"
if [ $max_file_size -eq 0 ]; then # Comment the limitation line if no limit
	ynh_replace_string "max_file_size" "#max_file_size" "${final_path}/lufi.conf"
fi

ynh_replace_string "__SECRET__" "$secret" "${final_path}/lufi.conf"
if [ $is_public -eq 0 ];
then
	ynh_replace_string "__IS_PUBLIC__" "" "${final_path}/lufi.conf"
else
	ynh_replace_string "__IS_PUBLIC__" "#" "${final_path}/lufi.conf"
fi
ynh_store_file_checksum "${final_path}/lufi.conf"

#=================================================
# GENERIC FINALISATION
#=================================================
# UPDATE SSOWAT
#=================================================
ynh_print_info "Reconfigure SSOwat"

ynh_app_setting_set $app unprotected_uris "/"
if [ $is_public -eq 0 ]
then
	if [ "$path_url" == "/" ]; then
	    # If the path is /, clear it to prevent any error with the regex.
	    path_url=""
	fi
	# Modify the domain to be used in a regex
	domain_regex=$(echo "$domain" | sed 's@-@.@g')
	ynh_app_setting_set $app protected_regex "$domain_regex$path_url/stats$","$domain_regex$path_url/manifest.webapp$","$domain_regex$path_url/$","$domain_regex$path_url/d/.*$","$domain_regex$path_url/m/.*$"
fi

#=================================================
# RESTART LUFI
#=================================================

ynh_systemd_action -n $app -a reload -l "Creating process id file" -p "$final_path/log/production.log"

#=================================================
# RELOAD NGINX
#=================================================
ynh_print_info "Reloading nginx web server..."

systemctl reload nginx

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

ynh_print_info "Change of URL completed for $app"