#!/usr/bin/env bash
# nc-create-thread.sh — high-level: create a new thread in a NetConfig and
# (optionally) wire a route from another thread to it.
#
# Combines nc-make-jump's emit helpers + nc-insert-protocol for a single
# user-facing operation. Goes through the journal.
#
# Usage:
#   nc-create-thread.sh --name NEW_THREAD --site SITE --netconfig PATH
#                       --type tcpip|file
#                       --direction inbound|outbound
#                       --port PORT [--host HOST]
#                       [--process PROC]
#                       [--encoding ASCII]
#                       [--connect-from EXISTING_THREAD]   # add a route on EXISTING → NEW
#                       [--route-type raw|xlate|generate]   # default raw
#                       [--xlate XLATENAME]                 # if route-type=xlate
#                       [--trxid REGEX]                     # default .*
#
# Example: create a new outbound thread `to_metrics` in process `metrics` on
# 10.0.0.50:51999, raw-route from existing `IB_ADT_muxS` to it.
set -o pipefail

NC_SELF="$0"
LIB_DIR="$(cd "$(dirname "$NC_SELF")" && pwd)"
NCP="$LIB_DIR/nc-parse.sh"
NCI="$LIB_DIR/nc-insert-protocol.sh"

die() { printf 'nc-create-thread: %s\n' "$*" >&2; exit 1; }

NAME=""; SITE="${HCISITE:-}"; NC=""
TYPE="tcpip"; DIRECTION="outbound"; PORT=""; HOST=""
PROCESS=""; ENCODING="ASCII"
CONNECT_FROM=""; ROUTE_TYPE="raw"; XLATE=""; TRXID=".*"

while [ $# -gt 0 ]; do
  case "$1" in
    --name)         shift; NAME="$1" ;;
    --site)         shift; SITE="$1" ;;
    --netconfig)    shift; NC="$1" ;;
    --type)         shift; TYPE="$1" ;;
    --direction)    shift; DIRECTION="$1" ;;
    --port)         shift; PORT="$1" ;;
    --host)         shift; HOST="$1" ;;
    --process)      shift; PROCESS="$1" ;;
    --encoding)     shift; ENCODING="$1" ;;
    --connect-from) shift; CONNECT_FROM="$1" ;;
    --route-type)   shift; ROUTE_TYPE="$1" ;;
    --xlate)        shift; XLATE="$1" ;;
    --trxid)        shift; TRXID="$1" ;;
    -h|--help)      sed -n '2,20p' "$NC_SELF"; exit 0 ;;
    *)              die "unknown arg: $1" ;;
  esac
  shift
done

[ -n "$NAME" ] || die "missing --name"
[ -n "$PORT" ] || die "missing --port"
[ -n "$NC" ] || NC="${HCIROOT:-}/${SITE}/NetConfig"
[ -f "$NC" ] || die "no such netconfig: $NC"
[ -z "$PROCESS" ] && PROCESS="$SITE"

is_server=0
outonly=1
obib=0
case "$DIRECTION" in
  inbound)  is_server=1; outonly=0; obib=1 ;;
  outbound) is_server=0; outonly=1; obib=0 ;;
  *)        die "bad --direction" ;;
esac

# Build the protocol block
build_block() {
  cat <<EOF
protocol ${NAME} {
    { AUTOSTART 1 }
    { BITMAP {} }
    { COORDS {0 0} }
    { DATAFORMAT {
        { FRLTYPE offlen }
        { OFFLEN { { LEN 0 } { OFF 0 } } }
        { TYPE frl }
    } }
    { DATAXLATE {

    } }
    { EDIBATCH {
        { IN_DATA  { { TYPE {} } { VERSION {} } } }
        { OUT_DATA { { HEADER {} } { TRIGGER { { COUNT {} } { SCHEDULER {} } { TIMER {} } } } { TYPE {} } { VERSION {} } } }
    } }
    { ENCODING ${ENCODING} }
    { ENCODING_BOM_IB 0 }
    { ENCODING_BOM_OB 0 }
    { ENCODING_HL7 0 }
    { ENCODING_XML 0 }
    { EOCONFIG {} }
    { ERRDBTPS {
        { ERRTPSPROCS { { ARGS {} } { PROCS {} } { PROCSCONTROL {} } } }
        { RETRIES -1 }
    } }
    { GROUPS {larry_created} }
    { HOSTDOWN 0 }
    { ICLSERVERPORT {} }
    { KEEPMSGONDISK 0 }
    { META {} }
    { OBWORKASIB ${obib} }
    { OUTBOUNDONLY ${outonly} }
    { PROCESSNAME ${PROCESS} }
    { PROTOCOL {
        { CA_FILE {} }
        { CA_PATH {} }
        { CERT_FILE {} }
        { CIPHERSUITES {} }
        { CLOSE 0 }
        { CONTROLMSGS 0 }
        { COPYCLIENTIPP 0 }
        { DELAYCONNECT 0 }
        { ENCODE_FILL {} }
        { ENCODE_INCLUSIVE 1 }
        { ENCODE_ISNATIVE 0 }
        { ENCODE_JUST r }
        { ENCODE_LEN 4 }
        { ENCODE_TYPE encapsulated }
        { HOST ${HOST:-{}} }
        { IPV4_V6_DUAL 0 }
        { IS_SSL 0 }
        { ISMULTI 0 }
        { ISSERVER ${is_server} }
        { LOCAL_IP {} }
        { MAXCLIENT 0 }
        { MAXOBQD 0 }
        { MAXPREXLTQD 0 }
        { MLP_ERROR RESET }
        { MLP_MODE MLP }
        { MLP_TIMEOUT 30 }
        { MODE {} }
        { PASSWORD {} }
        { PORT ${PORT} }
        { PRIVATE_KEY {} }
        { RECONNECT 1 }
        { REOPEN 5 }
        { SSL_PROTOCOL All }
        { TCP_CONNECTION_TIMEOUT {} }
        { TYPE ${TYPE} }
        { WRITEZERO 0 }
    } }
    { RECVCONTROL { { ACKCONTROL { { ARGS {} } { PROCS {} } { PROCSCONTROL {} } } } { EOMSG {} } { HOLDMSGS 0 } { MSGPRIO 5120 } } }
    { SAVECONTROL { { ARGS {} } { PROCS {} } { PROCSCONTROL {} } } }
    { TPS_INBOUND  { { ARGS {} } { PROCS {} } { PROCSCONTROL {} } } }
    { TPS_OUTBOUND { { ARGS {} } { PROCS {} } { PROCSCONTROL {} } } }
    { TRACING 0 }
}
EOF
}

build_route_entry() {
  local xlate_block="{ PROCS { { ARGS {} } { PROCS {} } { PROCSCONTROL {} } } }"
  local extra=""
  if [ "$ROUTE_TYPE" = "xlate" ] && [ -n "$XLATE" ]; then
    extra="{ XLATE ${XLATE} }"
  fi
  cat <<EOF
{
    { CACHEMSG 0 }
    { DEL_ON_ERR_ROUTE 0 }
    { ROUTE_DETAILS {
        {
            { DEST ${NAME} }
            ${xlate_block}
            ${extra}
            { TYPE ${ROUTE_TYPE} }
        }
    } }
    { ROUTE_ENABLED 1 }
    { TRXID ${TRXID} }
    { WILDCARD ON }
}
EOF
}

# Generate block
BLOCK_FILE=$(mktemp); build_block > "$BLOCK_FILE"
printf '\n=== Generated protocol block for %s ===\n\n' "$NAME"
cat "$BLOCK_FILE"
printf '\n'

# Insert it
"$NCI" insert "$NC" "$BLOCK_FILE"

# If --connect-from, also splice a route into the source thread's DATAXLATE
if [ -n "$CONNECT_FROM" ]; then
  ROUTE_FILE=$(mktemp); build_route_entry > "$ROUTE_FILE"
  printf '\n=== Route to splice into %s DATAXLATE ===\n\n' "$CONNECT_FROM"
  cat "$ROUTE_FILE"
  printf '\n'
  "$NCI" add-route "$NC" "$CONNECT_FROM" "$ROUTE_FILE"
  rm -f "$ROUTE_FILE"
fi
rm -f "$BLOCK_FILE"