pprint

#!/bin/bash -e

export LOGFILE='./log'

#This function displays information messages using a green font.
#param: The message to display.
#usage: info "This is some information"
function info {
    echo -e "\033[1;32m$@\033[0;49m"
}

#This function displays warnings in a yellow font.
#param: The message to display.
#usage: warn "This is a warning"
function warn {
    echo -e "\033[1;33mWARNING: $@\033[0;49m"
}

#This function is used to exit the script do to an unrecoverable error
#param: The error message to display.
#usage: die "This is an error"
function die {
    error $@

    exit 1
}

#This function prints out an error, unlike die, it does not exit
#param: The message to display.
#usage: error "This is an error."
function error {
    echo -e "\033[1;31;47m"
    echo "***************************************************"
    echo "$@"
    echo "***************************************************"
    echo -e "\033[0;49m"
}

#Adds a log message to the log file
#param: Log level name
#param: The message to add
#usage: mkmsg INFO This is a log message
function mkmsg {
    local level=$1
    shift
    echo "$level $(date +"%F@%T") $@" >> $LOGFILE
}

#These function add the message to a log file,
#and then call the associated message function
#function.
function info_log {
    mkmsg INFO "$@"
    info "$@"
}

function warn_log {
    mkmsg WARN "$@"
    warn "$@"
}

function error_log {
    mkmsg ERROR "$@"
    error "$@"
}

function die_log {
    mkmsg FATAL "$@"
    die "$@"
}

#Prints who to send mail to. It does this via cat.
function get_to {
  cat "./etc/email"
}

#This function mails the user the given message. The
#user can be found in ./etc/email
#param: Subject of the message
#param: The messge to send
#usage: mail_msg "The subject" An email message.
function mail_msg {
  local subject="$1"
  local user="$(get_to)"
  shift

  echo "$@" | mail -s "$subject" $user
}

#This function will mail the log file.
#param: The message's subject
#param: A message to prefix to the log
#usage: mail_log "Script failed" "The xxx script failed"
function mail_log {
  local subject="$1"
  local user=$(get_to)
  shift

  mail -s "$subject" $user <<EOF
$@

-------------------
$(cat $LOGFILE)
EOF
}

#This function sends the log via email then dies
#param: Subject of the message
#param: The die message
#usage: die_mail "Script failed" The xxx script failed!
function die_mail {
    local subect=$1
    shift

    error_log $@
    mail_log "$1" $@
    exit 1
}