#!/bin/bash

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

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

admin_mail=$(ynh_user_get_info --username="$admin" --key=mail)
key=$(ynh_string_random --length=50)

# Remove trailing "/" from the path
path_no_slash=${path%/}

#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression "Stopping systemd services..."

ynh_systemctl --service=$app --action="stop" --log_path="/var/log/$app/weblate.log" --wait_until="goodbye to uWSGI"
ynh_systemctl --service="$app-celery" --action="stop" --log_path="systemd"

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression "Ensuring downward compatibility..."

# If used_forge, forge_username, forge_token don't exist, create them
if [ -z "$used_forge" ]; then
	used_forge="GitHub"
	forge_username=$(ynh_app_setting_get --key=github_account)
	forge_token=$(ynh_app_setting_get --key=github_token)
	ynh_app_setting_set --key=used_forge --value=$used_forge
	ynh_app_setting_set --key=forge_username --value=$forge_username
	ynh_app_setting_set --key=forge_token --value=$forge_token
fi

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression "Upgrading NGINX web server configuration..."

# Create a dedicated NGINX config
ynh_config_add_nginx

#=================================================
# INSTALL XXHASH
#=================================================
ynh_script_progression "Installing xxHash..."

tempdir="$(mktemp -d)"
ynh_setup_source --dest_dir=$tempdir --source_id="libxxhash"
pushd $tempdir
	make
	make install
popd
ynh_safe_rm "$tempdir"

#=================================================
# CONFIGURE HUB
#=================================================

if [ $used_forge = "GitHub" ] ; then
	ynh_script_progression "Configure hub..."

	#mkdir "$install_dir/.config/"
	ynh_config_add --template="hub_config" --destination="$install_dir/.config/hub"

	cat <<EOF > "$install_dir/.bashrc"
	eval "$(hub alias -s /bin/bash)"
EOF
fi

#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression "Updating configuration..."

ynh_config_add --template="uwsgi.ini" --destination="/etc/uwsgi/apps-available/$app.ini"
chmod 600 "/etc/uwsgi/apps-available/$app.ini"

ynh_config_add --template="celery-weblate" --destination="$install_dir/celery-weblate"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression "Configuring $app's systemd service..."

ynh_config_add_systemd  --template="weblate.service"
ynh_config_add_systemd --service="$app-celery" --template="celery-weblate.service"

#=================================================
# UPGRADE WEBLATE
#=================================================

upgrade() {
	new_version=$1
	settings_template=$2
	#=================================================
	# PIP INSTALLATION
	#=================================================
	ynh_script_progression "Install weblate using PIP..."

	ynh_safe_rm "${install_dir}/venv"
	virtualenv --python=python3 "${install_dir}/venv"
	chown -R $app: "$install_dir"
	#run source in a 'sub shell'
	(
		set +o nounset
		source "${install_dir}/venv/bin/activate"
		set -o nounset
		cd "${install_dir}"

		sudo --user=$app $install_dir/venv/bin/pip install --upgrade pip setuptools wheel pkgconfig xxhash

		# Read the "Note" section in https://docs.weblate.org/en/weblate-4.11/admin/install/venv-debian.html#python-modules
		sudo --user=$app $install_dir/venv/bin/pip install --force-reinstall --no-binary :all: cffi
		# Still needed with latest version of weblate?
		sudo --user=$app $install_dir/venv/bin/pip install --upgrade Weblate=="$new_version"
		sudo --user=$app $install_dir/venv/bin/pip install psycopg2-binary ruamel.yaml aeidon phply boto3 google openai
		#pip install pytz python-bidi PyYaML Babel pyuca pylibravatar py3dns psycopg2-binary phply django-redis hiredis aeidon ruamel.yaml
		# specific to YunoHost package:
		sudo --user=$app $install_dir/venv/bin/pip install django_sendmail_backend
	)

	#=================================================
	# MODIFY A CONFIG FILE
	#=================================================
	ynh_script_progression "Create weblate configuration file..."

	# save old settings file
	settings="$install_dir/venv/lib/$weblate_pypath/site-packages/weblate/settings.py"
	path="${path%/}"

	set_forge_variables

	ynh_config_add --template="settings.py" --destination="$settings"

	ynh_app_setting_set --key=redis_db --value="$redis_db"

	# Recalculate and store the config file checksum into the app settings
	ynh_store_file_checksum "$settings"

	touch "$install_dir/local_settings.py"
	ln -sf "$install_dir/local_settings.py" "$install_dir/venv/lib/$weblate_pypath/site-packages/weblate/local_settings.py"

	#=================================================
	# MIGRATE WEBLATE
	#=================================================
	ynh_script_progression "Run migration scripts..."

	ynh_systemctl --service="$app-celery" --action="start"

	(
		set +o nounset
		source "${install_dir}/venv/bin/activate"
		set -o nounset
		export DJANGO_SETTINGS_MODULE="weblate.settings"
		cd "${install_dir}"

		sudo --user=$app $install_dir/venv/bin/weblate migrate --noinput
		sudo --user=$app $install_dir/venv/bin/weblate collectstatic --noinput
		sudo --user=$app $install_dir/venv/bin/weblate setuplang
		sudo --user=$app $install_dir/venv/bin/weblate setupgroups
		sudo --user=$app $install_dir/venv/bin/weblate compilemessages
                sudo --user=$app $install_dir/venv/bin/weblate compress

		# Check the configuration
		# This may fail in some cases with errors, etc., but the app works and the user can fix issues later.
		if [ "$new_version" == "$(ynh_app_upstream_version)" ]; then
			sudo --user=$app $install_dir/venv/bin/weblate check --deploy || true
		fi
	)

	ynh_systemctl --service="$app-celery" --action="stop"
}

file_version="${install_dir}/venv/lib/$weblate_pypath/site-packages/weblate/__init__.py"
if [ -e $file_version ]
then
	current_version=$(cat $file_version | grep "^VERSION = " | grep -o "[0-9].[0-9]" | head -n1 | cut -d"." -f1)
	if [ -z "$current_version" ]
	then
		file_version="${install_dir}/venv/lib/$weblate_pypath/site-packages/weblate/utils/version.py"
		current_version=$(cat $file_version | grep "^VERSION = " | grep -o "[0-9].[0-9]" | head -n1 | cut -d"." -f1)
	fi
else
	current_version=3
fi

ynh_psql_db_shell <<< "CREATE EXTENSION IF NOT EXISTS pg_trgm;"

if [ "$current_version" -lt "5" ]
then
	upgrade "5.0.2" "../conf/settings.py"
fi

upgrade $(ynh_app_upstream_version) "../conf/settings.py"

# Set right permissions for curl installation
mkdir -p "$install_dir/avatar-cache"
chown -R $app: "$install_dir"
chown "$app:www-data" "$install_dir"
chown -R "$app:www-data" "$install_dir/data"

chmod 750 "$install_dir"
chmod -R o-rwx "$install_dir"

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression "Upgrading logrotate configuration..."

# Use logrotate to manage app-specific logfile(s)
ynh_config_add_logrotate

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression "Integrating service in YunoHost..."

yunohost service add $app --log="/var/log/$app/weblate.log"
yunohost service add "$app-celery" --log="/var/log/$app/weblate-celery-w1.log"

#=================================================
# START SYSTEMD SERVICES
#=================================================
ynh_script_progression "Starting systemd services..."

ynh_systemctl --service=$app --action="start" --log_path="/var/log/$app/weblate.log" --wait_until="spawned uWSGI"
ynh_systemctl --service="$app-celery" --action="start" --log_path="/var/log/$app/weblate-celery-celery.log" --wait_until="mingle: all alone"

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

ynh_script_progression "Upgrade of $app completed"