#!/usr/bin/env bash
set -e
HOST_CONF_PATH="${HOST_CONF_PATH:-/tmp/hosts}"
RESOLVE_DOCKERHOST="${RESOLVE_DOCKERHOST:-false}"
DOCKER_HOSTNAME_VAR="${DOCKER_HOSTNAME_VAR:-LOCAL_WEB_HOST}"

if [ -f "${HOST_CONF_PATH}" ]
then
    WRAP_START=$(grep -ve "# Added by hostman$" "${HOST_CONF_PATH}")
    WRAP_START+="\n"
else
    printf "[WARN]: No such file or directory: %s\n" "${HOST_CONF_PATH}"
    printf "Creating %s" "${HOST_CONF_PATH}"
    touch "${HOST_CONF_PATH}"
fi

if ! $RESOLVE_DOCKERHOST
then
    TEMPLATE='127.0.0.1 '
else
    TEMPLATE='$LOCAL_IP '
fi

TEMPLATE="${TEMPLATE}\${${DOCKER_HOSTNAME_VAR}} # Added by hostman"

# Allow overriding out for debugging and testing purposs
if [ -z "${HOST_CONF_OUT+.}" ]
then
    OUT="${HOST_CONF_PATH}"
else
    OUT="${HOST_CONF_OUT}"
fi

check_template() {
    if grep -q '^[:.0-9a-e]\+ [^\s]\+ # Added by hostman$' <<< "${PARTIAL_RESULT}"
    then
        return 0;
    fi
    return 1;
}