#!/bin/bash

# Source YunoHost helpers
source /usr/share/yunohost/helpers
source ./psql.sh

# Stop script if errors
ynh_abort_if_errors

# Import common cmd
source ./_common.sh

# Retrieve arguments
domain=$(ynh_app_setting_get $app special_domain)
path=$(ynh_app_setting_get $app special_path)
final_path=$(ynh_app_setting_get $app final_path)
synapse_old_version=$(ynh_app_setting_get $app synapse_version)
synapse_db_pwd=$(ynh_app_setting_get $app synapse_db_pwd)
is_public=$(ynh_app_setting_get $app is_public)
synapse_port=$(ynh_app_setting_get $app synapse_port)
synapse_tls_port=$(ynh_app_setting_get $app synapse_tls_port)
turnserver_tls_port=$(ynh_app_setting_get $app turnserver_tls_port)
turnserver_pwd=$(ynh_app_setting_get $app turnserver_pwd)

# To be sure that the migration is sucessfull we check that the old synapse version is compatible with the synapse_port_db script.
if [[ -z $synapse_old_version ]] && [[ $(dpkg -l | grep -c -E "ii.*matrix-synapse.*0.25") != 1 ]] && [[ $(dpkg -l | grep -c -E "ii.*matrix-synapse.*0.26") != 1 ]]
then
	ynh_die "Update from this synapse version is not available now. You need to wait for the next update."
fi

systemctl stop matrix-synapse.service

ynh_backup_before_upgrade
ynh_clean_setup () {
	ynh_restore_upgradebackup
}

ynh_abort_if_errors

if [[ -z $synapse_old_version ]]
then

	##  We move from debian package to new package with python virtualenv
	# Change settings
	path="/_matrix"
	domain=$(ynh_app_setting_get $app domain)
	final_path="/opt/yunohost/matrix-synapse"
	ynh_app_setting_set $app special_domain $domain
	ynh_app_setting_set $app special_path $path
	ynh_app_setting_set $app final_path $final_path
	ynh_app_setting_delete $app domain
	ynh_app_setting_delete $app path
	ynh_app_setting_delete $app skipped_uris

	# Remove old package and add new package as dependance
	ynh_secure_remove /etc/apt/sources.list.d/matrix.list
	ynh_package_autoremove --purge matrix-synapse python-matrix-synapse-ldap3 || true

	# If we don't remove these line in dpkg config, dpkg fail on every new package install
	sudo sed --in-place ':a;N;$!ba;s@matrix-synapse nogroup 755 /var/lib/matrix-synapse\n@@g' /var/lib/dpkg/statoverride
	sudo sed --in-place ':a;N;$!ba;s@matrix-synapse nogroup 755 /var/log/matrix-synapse\n@@g' /var/lib/dpkg/statoverride
	sudo sed --in-place ':a;N;$!ba;s@matrix-synapse nogroup 755 /etc/matrix-synapse\n@@g' /var/lib/dpkg/statoverride

	# add new package as dependance and install dependance
	install_dependances

	# Create directory Install synapse in virtualenv
	setup_dir || true # If the dir aready exist the command could fail
	install_source
    cp /etc/yunohost/certs/$domain/dh.pem /etc/matrix-synapse/dh.pem
	set_permission

	# Open access to server without a button the home
	cp ../conf/add_sso_conf.py $final_path
	cp ../conf/remove_sso_conf.py $final_path
	python $final_path/add_sso_conf.py || echo "Error while sso config, please add '/_matrix' in /etc/ssowat/conf.json.persistent"

	# Create user
	ynh_system_user_create $synapse_user /var/lib/matrix-synapse
    adduser $synapse_user ssl-cert
    adduser turnserver ssl-cert

	# Create systemd service
	ynh_secure_remove /etc/init.d/matrix-synapse
	ynh_secure_remove /lib/systemd/system/matrix-synapse.service
	ynh_secure_remove /etc/systemd/system/matrix-synapse.service
	systemctl daemon-reload
	systemctl disable matrix-synapse.service

	cp ../conf/default_matrix-synapse /etc/default/matrix-synapse
	cp ../conf/matrix-synapse.service /etc/systemd/system/
	systemctl daemon-reload
	systemctl enable matrix-synapse.service

	# Configuration de logrotate
	ynh_use_logrotate /var/log/matrix-synapse

	# register yunohost service
	yunohost service add matrix-synapse

	## Move to postgresql from sqlite

	# We create the new settings
	synapse_db_pwd=$(ynh_string_random 30)
	ynh_app_setting_set $app synapse_db_pwd $synapse_db_pwd

	# Create postgresql database
	ynh_psql_create_user $synapse_db_user $synapse_db_pwd
	ynh_psql_execute_as_root \
	"CREATE DATABASE $synapse_db_name ENCODING 'UTF8' LC_COLLATE='C' LC_CTYPE='C' template=template0 OWNER $synapse_db_user;"

	# Create config file for synapse with postgresql
	config_synapse
	
	# We get the last version of the synapse_port_db script because an old version could be buggy.
	cp ../sources/synapse_port_db /opt/yunohost/matrix-synapse/bin/synapse_port_db
	
	# Migrate database (in virtualenv)
	source $final_path/bin/activate
	/opt/yunohost/matrix-synapse/bin/synapse_port_db --sqlite-database /var/lib/matrix-synapse/homeserver.db \
	--postgres-config /etc/matrix-synapse/homeserver.yaml
	deactivate
fi

# If the turnserver log is not ready configured we configure it now
test -e /var/log/turnserver || (mkdir -p /var/log/turnserver && ynh_use_logrotate /var/log/turnserver)

# Fix issue about certificates access
if [[ ! $(grep "ssl-cert:x:[0-9]*:.*matrix-synapse" /etc/group) ]]
then
    adduser $synapse_user ssl-cert
    adduser turnserver ssl-cert
fi

test -e /etc/matrix-synapse/dh.pem || cp /etc/yunohost/certs/$domain/dh.pem /etc/matrix-synapse/dh.pem

# Upgrade manually Synapse
install_source
set_permission

# Update nginx config
config_nginx

# Configure Synapse
config_synapse

# Configure Coturn
config_coturn

# Set new settings
ynh_app_setting_set $app synapse_version $APP_VERSION

# Recharge la configuration Nginx
systemctl reload nginx.service
systemctl start matrix-synapse.service
systemctl restart coturn.service