Helper function for using Slack WebHooks in Linux

slack_functions

#!/bin/bash
#
# Slack Helper Functions
#
#The MIT License (MIT)
#
#Copyright (c) 2015 "whiteboardcoder" Patrick Bailey
#
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:
#
#The above copyright notice and this permission notice shall be included in all
#copies or substantial portions of the Software.
#
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
#SOFTWARE.
#
########################

#The Slack URL for your webhook
SLACK_URL_HOOK="https://hooks.slack.com/services/REPLACE_WITH_YOUR_URL!!!"

#SLACK_URL_HOOK CHECK
if [[ $SLACK_URL_HOOK == *"REPLACE_WITH_YOUR_URL!!!"* ]]
then
  echo "Update your SLACK_URL_HOOK Variable!"
  exit 1
fi

set_variables() {
  USERNAME=$1
  EMOJI=$2
  ROOM=$3
  TITLE_1="$4"
  MSG_1="$5"
  TITLE_2="$6"
  MSG_2="$7"
}

post() {
  if [ -n "$TITLE_2" ] && [ -n "$MSG_2" ]
    then
      post_double_msg
    elif [ -n "$TITLE_1" ] && [ -n "$MSG_1" ]
      then
        post_single_msg
    else
      echo "No Message provided"
      return 1
  fi
}

post_single_msg() {

  curl -H "Content-type:application/json" \
  -X POST -d \
  '{
     "channel" : "#'"$ROOM"'",
     "username" : "'"$USERNAME"'",
     "icon_emoji" : ":'"$EMOJI"':",
     "attachments" : [
       {
         "fallback" : "'"$TITLE_1"'",
         "color" : "'"$COLOR"'",
         "fields" : [
           {
             "title" : "'"$TITLE_1"'",
             "value" : "'"$MSG_1"'"
            }
          ]
        }
      ]
  }' $SLACK_URL_HOOK
}

post_double_msg() {

  curl -H "Content-type:application/json" \
  -X POST -d \
  '{
     "channel" : "#'"$ROOM"'",
     "username" : "'"$USERNAME"'",
     "icon_emoji" : ":'"$EMOJI"':",
     "attachments" : [
       {
         "fallback" : "'"$TITLE_1"'",
         "color" : "'"$COLOR"'",
         "fields" : [
           {
             "title" : "'"$TITLE_1"'",
             "value" : "'"$MSG_1"'",
             "short" : true
            },
            {
              "title" : "'"$TITLE_2"'",
              "value" : "'"$MSG_2"'",
              "short" : true
            }
          ]
        }
      ]
  }' $SLACK_URL_HOOK
}

info() {
  COLOR="#d3d3d3"
  set_variables "$1" "$2" "$3" "$4" "$5" "$6" "$7"
  post
}

good() {
  COLOR="good"
  set_variables "$1" "$2" "$3" "$4" "$5" "$6" "$7"
  post
}

warning() {
  COLOR="warning"
  set_variables "$1" "$2" "$3" "$4" "$5" "$6" "$7"
  post
}

bad () {
  COLOR="danger"
  set_variables "$1" "$2" "$3" "$4" "$5" "$6" "$7"
  post
}