A bash executable with command line options to post into hall rooms

hall_message

#!/bin/bash

# A convenient way to post to Hall rooms from the command line... as Lionel Richie
#
# Usage
# ./hall_message
# ./hall_message -m "Hello..."
# ./hall_message -p https://pbs.twimg.com/profile_images/421128111086764032/zv1APHT5.jpeg -t justin -m "I'll be your platinum, I'll be your silver, I'll be your gold"

# Hall integration guide..... https://hall.com/docs/integrations/generic/?uuid=523d0fc3e1681a6757f70ea0
# bash indirect references... http://tldp.org/LDP/abs/html/ivr.html

# Add a default room where this script can post.
# If you had a room with the token 0123456789abcdef, you
# would add it as follows
#
# ROOM_API_TOKEN_DEFAULT='0123456789abcdef'
#
# and post messages to it as follows:
#
# ./hall_message
ROOM_API_TOKEN_DEFAULT='YOUR_TOKEN_GOES_HERE'
ROOM=$ROOM_API_TOKEN_DEFAULT

# Add your room name/token combinations here using the following format:
# ROOM_API_TOKEN_ROOMNAME='ROOMKEY'
#
# If you had a room named Commodores with the token 0123456789abcdef, you
# would add it as follows:
#
# ROOM_API_TOKEN_COMMODORES='0123456789abcdef'
#
# and post messages to it as follows:
#
# ./hall_message -n COMMODORES -m "Easy like Sunday morning"
ROOM_API_TOKEN_YOURROOMNAMEGOESHERE='YOUR_ROOM_TOKEN_GOES_HERE'

TITLE='Lionel Richie'
MESSAGE="Hello... is it me you're looking for?"
PICTURE='https://pbs.twimg.com/profile_images/378800000712297666/1b78a729761feed16a2c571a8c390743.jpeg'

while getopts "m:r:t:p:n:" OPTION; do
  case $OPTION in
    m) MESSAGE=$OPTARG ;;
    n)
      ROOM_KEY="ROOM_API_TOKEN_$OPTARG"
      eval ROOM=\$$ROOM_KEY
      ;;
    t) TITLE=$OPTARG ;;
    p) PICTURE=$OPTARG ;;
    r) ROOM=$OPTARG ;;
  esac
done

ENDPOINT="https://hall.com/api/1/services/generic/$ROOM"

curl \
  -X POST \
  -H 'Content-Type: application/json' \
  -d "{\"title\":\"$TITLE\",\"message\":\"$MESSAGE\",\"picture\":\"$PICTURE\"}" \
  "$ENDPOINT"