errol/errol

#!/bin/bash

################################################################################
# errol is a short and sweet script that will send a notification using the
# Pushbullet API.
#
# Currently this script is only capable of sending to all devices connected to
# your Pushbullet account.
################################################################################


# Required arguments
TITLE=
MSG=
TOKEN=

# Pushbullet API constants.
PUSHBULLET_BASE_URL="https://api.pushbullet.com"
USER_URL="${PUSHBULLET_BASE_URL}/v2/users/me"
PUSH_URL="${PUSHBULLET_BASE_URL}/v2/pushes"
DEVICES_URL="${PUSHBULLET_BASE_URL}/v2/devices"

# Parameter strings.
LONG_TITLE_STR="title"; SHORT_TITLE_STR="t"
LONG_MSG_STR="msg";     SHORT_MSG_STR="m"
LONG_TOKEN_STR="token"; SHORT_TOKEN_STR="k"


################################################################################
# Usage
################################################################################
function printusage() {
    echo "
Send a notification using the Pushbullet API.

Usage:
    $(basename "$0")
        [-h|--help]
        [(-$SHORT_TOKEN_STR|--$LONG_TOKEN_STR) token]
        (-$SHORT_TITLE_STR|--$LONG_TITLE_STR) title
        (-$SHORT_MSG_STR|--$LONG_MSG_STR) message

Arguments:
    -h,--help
        Print this usage message.
    -$SHORT_TOKEN_STR,--$LONG_TOKEN_STR
        The Pushbullet API token. If not passed in from the commandline, this
        value will be read from the \$PB_API_TOKEN environment variable. One or
        the other must be provided.
    -$SHORT_TITLE_STR,--$LONG_TITLE_STR
        The title of the notification.
    -$SHORT_MSG_STR,--$LONG_MSG_STR
        The message body of the notification. Multi-line messages must be done
        with literal '\n's.

"
}


################################################################################
# Check that each of the required arguments has a valid value.
################################################################################
function checkForRequiredArgs() {

    if [ -z "$TITLE" ] || [ -z "$MSG" ] || [ -z "$TOKEN" ]; then
        echo "
    Error: One of the required args was empty.

    -$SHORT_TOKEN_STR,--$LONG_TOKEN_STR OR \$PB_API_TOKEN: $TOKEN
    -$SHORT_TITLE_STR,--$LONG_TITLE_STR: $TITLE
    -$SHORT_MSG_STR,--$LONG_MSG_STR: $MSG
    "
        printusage
        exit 1
    fi

}


################################################################################
# Parse the command line arguments and populate the globals:
#     $TOKEN, $TITLE, and $MSG
################################################################################
function parseArgs() {

    LONG_OPTS="$LONG_TOKEN_STR:,$LONG_TITLE_STR:,$LONG_MSG_STR:,help"
    SHORT_OPTS="$SHORT_TOKEN_STR:$SHORT_TITLE_STR:$SHORT_MSG_STR:h"

    opts=$(getopt --longoptions "$LONG_OPTS" \
                  --name "$(basename "$0")" \
                  --options "$SHORT_OPTS" \
                  -- "$@" )

    # If there was an error exit and print usage.
    if [ $? != 0 ]; then
        echo "There was an error parsing the arguments.\n"
        printusage
        exit 1
    fi

    eval set -- "$opts"

    while [[ $# -gt 0 ]]; do
        case $1 in
            -$SHORT_TOKEN_STR | --$LONG_TOKEN_STR )
                TOKEN="$2"
                shift 2
                ;;

            -$SHORT_TITLE_STR | --$LONG_TITLE_STR )
                TITLE="$2"
                shift 2
                ;;

            -$SHORT_MSG_STR | --$LONG_MSG_STR )
                MSG="$2"
                shift 2
                ;;

            -h | --help )
                printusage
                exit 0
                ;;

            -- )
                shift
                break
                ;;

            *)
                break
                ;;

        esac
    done

}


################################################################################
# main body
################################################################################

parseArgs "$@"

# Pull the API token from the environment variable if it hasn't been set from
# parsing the args.
TOKEN="${TOKEN:-$PB_API_TOKEN}"

checkForRequiredArgs

# Run this comment to get pushbullet user info.
#curl -u ${TOKEN}: $USER_URL

curl -u $TOKEN: -X POST $PUSH_URL \
    --header 'Content-Type: application/json' \
    --data-binary '{"type": "note", "title": "'"$TITLE"'", "body": "'"$MSG"'"}'