#!/bin/bash

set -e

set -o pipefail

# accepts environment vars

# EMAIL_SUCCESS

# EMAIL_FAILED

# EMAIL_QUIET

# EMAIL_SUBJECT

# EMAIL_BODY

if [ ! -z "$EMAIL_QUIET" ]; then

    # report only errors

    EMAIL_SUCCESS=

fi

if [ -z "$EMAIL_SUBJECT" ]; then

    EMAIL_SUBJECT="builder task finished"

fi

COMMAND="$@"

LOG_FILE="/tmp/withemail-`uuidgen`.log"

touch "$LOG_FILE"

print_email() {

    local MESSAGE="$1"

    echo "$EMAIL_BODY"

    echo

    echo "Command:"

    echo "    $COMMAND"

    echo "$MESSAGE"

    echo

    echo "log:"

    echo "----------------------------------------"

    tail -n 100 "$LOG_FILE"

    echo "----------------------------------------"

    echo

}

send_email() {

    local EMAIL="$1"

    local MESSAGE="$2"

    echo "$MESSAGE"

    if [ ! -z "$EMAIL" ]; then

        print_email "$MESSAGE" | mutt -s "$EMAIL_SUBJECT - $MESSAGE" "$EMAIL"

        #print_email "$MESSAGE" | mutt -s "$EMAIL_SUBJECT - $MESSAGE" -a "$LOG_FILE" -- "$EMAIL"

        echo "email sent to $EMAIL"

    fi

    rm "$LOG_FILE"

}

("$@" 2>&1 | tee "$LOG_FILE") || (send_email "$EMAIL_FAILED" "FAILED" && false)

send_email "$EMAIL_SUCCESS" "SUCCESS"