#!/usr/bin/env bash
set -euo pipefail

export CATALINA_TMPDIR=/usr/local/tomcat/temp

runtime_root="/usr/local/tomcat/webapps/ROOT"
workspace_www="/workspace/www"
workspace_rus="/workspace/rus"

rm -rf "$runtime_root"
mkdir -p "$runtime_root"

shopt -s dotglob nullglob

for source_path in "$workspace_www"/*; do
	entry_name="$(basename "$source_path")"
	if [ "$entry_name" = "WEB-INF" ]; then
		continue
	fi
	ln -s "$source_path" "$runtime_root/$entry_name"
done

mkdir -p "$runtime_root/WEB-INF"
cp -a "$workspace_www/WEB-INF/." "$runtime_root/WEB-INF/"

if [ -d "$workspace_rus/WEB-INF/classes" ]; then
	mkdir -p "$runtime_root/WEB-INF/classes"
	cp -a "$workspace_rus/WEB-INF/classes/." "$runtime_root/WEB-INF/classes/"
fi

mkdir -p /usr/local/tomcat/conf/Catalina/localhost
cat > /usr/local/tomcat/conf/Catalina/localhost/ROOT.xml <<'EOF'
<Context>
	<Resources allowLinking="true" />
</Context>
EOF

/usr/local/bin/bootstrap-docbase.sh

wait_for_mysql() {
	local host="${LOCAL_DB_HOST:-mysql}"
	local port="${LOCAL_DB_PORT:-3306}"
	local database="${LOCAL_DB_NAME:-pg}"
	local user="${LOCAL_DB_USER:-root}"
	local password="${LOCAL_DB_PASSWORD:-root}"
	local attempts=60

	for ((attempt=1; attempt<=attempts; attempt++)); do
		if mysql --protocol=TCP -h "$host" -P "$port" -u"$user" -p"$password" -D "$database" -Nse "SELECT 1 FROM parm WHERE codice = 'REWRITE_URL_ENABLE' LIMIT 1" >/dev/null 2>&1; then
			echo "MySQL is ready for legacy app startup"
			return 0
		fi

		echo "Waiting for MySQL readiness ($attempt/$attempts)"
		sleep 2
	done

	echo "MySQL did not become ready for legacy app startup" >&2
	return 1
}

wait_for_mysql

patch_context_param() {
	local param_name="$1"
	local param_value="$2"

	PARAM_NAME="$param_name" PARAM_VALUE="$param_value" perl -0pi -e 's#(<param-name>\Q$ENV{PARAM_NAME}\E</param-name>\s*<param-value>)[^<]*(</param-value>)#$1 . $ENV{PARAM_VALUE} . $2#egs' "$runtime_root/WEB-INF/web.xml"
}

patch_context_param database "//${LOCAL_DB_HOST:-mysql}/${LOCAL_DB_NAME:-pg}"
patch_context_param catalog "${LOCAL_DB_NAME:-pg}"
patch_context_param user "${LOCAL_DB_USER:-root}"
patch_context_param password "${LOCAL_DB_PASSWORD:-root}"
patch_context_param instance "${LOCAL_APP_INSTANCE:-main}"

exec catalina.sh run