entrypoint

#!/bin/bash

set -e

C3270_CONFIG_FILE=${C3270PRO:-/micro3270/config/.c3270}
TMP_CONFIG_FILE=/tmp/.c3270
CACERT_FILE=/micro3270/config/cacert

printf "\033[0;36m%s\033[0m\n" "Launching ibm/micro3270..."
printf "Please open questions or report issues here: https://github.com/IBM/micro3270/issues\n\n"

printf "\033[0;33m%s\033[0m\n" "Checking if a configuration file ('$C3270_CONFIG_FILE') was provided..."
printf "This file can be volume mounted to customize your configuration.\n\n"

if [ ! -f "$C3270_CONFIG_FILE" ]; then
	printf "\033[0;33m%s\033[0m\n" "Configuration file was not provided. Writing default configuration file."
	printf "For additional command-line and configuration options, see: https://x3270.miraheze.org/wiki/C3270/Command-line_options\n\n"

	if [ ! -w "$C3270_CONFIG_FILE" ]; then
		printf "\033[0;33m%s\033[0m%s\n\n" "Default config file location isn't writable, using: " "${TMP_CONFIG_FILE}"
		export C3270_CONFIG_FILE=$TMP_CONFIG_FILE
		export C3270PRO=$TMP_CONFIG_FILE
	fi

	cat <<-EOF > $C3270_CONFIG_FILE
		! This file can be volume-mounted via the container runtime
		c3270.port: ${ZOS_PORT:-23}
		c3270.hostname: $ZOS_HOST
	EOF

	if [ -f "$CACERT_FILE" ]; then
		echo "c3270.caFile: $CACERT_FILE" >> $C3270_CONFIG_FILE
	fi
else
	printf "\033[0;36m%s\033[0m\n\n" "Configuration file found!\n\n"
fi

printf "\033[0;36m%s\033[0m\n" "Displaying configuration profile..."
cat $C3270_CONFIG_FILE
printf "\n\n"
printf "\033[0;36m%s\033[0m\n" "Starting ibm/micro3270..."

if [[ ! -z ${KUBERNETES_SERVICE_HOST+x} && ! -t 0 ]]; then
	printf "\033[0;33m%s\033[0m\n" "Running in a Kubernetes/OCP environment, use the OCP Terminal UI tab or 'kubectl exec -it' to interact with micro3270!"
	while true; do sleep 30; done
else
	sleep 1
	exec c3270 "$@"
fi