Template for Bash script. Including main structure with argument and colored OK / FAIL message for shell script

template.sh

#!/bin/bash
#############################################################################
#                            my script NAME                                 #
#############################################################################
# 
# *Description*
# this script must be used ...
# 
# 
#
# It must also ... 
#
#
# *Author*: Michael Mercier <mickours@gmail.com>
#
#############################################################################


#show the steps for debug
#set -x

### SETTINGS ###
CONTACT="Michael Mercier <mickours@gmail.com>"

#display prefix
BEGIN_RED='\e[01;31m'
BEGIN_GREEN='\e[0;32m'
END_COLOR='\e[0m'
SCRIPT_START="[${BEGIN_GREEN}START${END_COLOR}]"
SCRIPT_OK="[ ${BEGIN_GREEN}OK${END_COLOR}  ]"
SCRIPT_FAIL="[${BEGIN_RED}FAIL${END_COLOR} ]"

### USAGE ###
usage(){
    echo "USAGE:
    $0 [-hicr]
    -h
        display this Help
    -i 
        Install
    -c 
        Configure
    -r
        start Runtime

    default (without argument) run the 3 steps: Install, Configure and Runtime.

    Problems or questions?
    contact $CONTACT
    ";
    exit 1
}

### UTILS ###

clean-env(){

#clean the environnement...

}

catch-errors(){
trap 'echo -e "$SCRIPT_FAIL Failed run $FUNCNAME, aborting."
clean-env
exit 1;' ERR
}

### TEMPLATE ###
template(){
    catch-errors
    echo -e "$SCRIPT_START $FUNCNAME..."

    #do something...

    echo -e "$SCRIPT_OK $FUNCNAME finished"
    return 0
}

### FUNCTIONS ###
install(){
    #do something
    echo "Hello world!"
}

configure(){
    #do something
    echo "Hello world!"
}

runtime(){
    #do something
    echo "Hello world!"
}

### MAIN ###
echo -e "$SCRIPT_START setup..."
if [ $# -eq 0 ]; then
    install
    configure
    runtime
fi;
 
while getopts ":icrh" opt; do
  case $opt in
    i)
        install
      ;;
    c)
        configure
      ;;
    r)
        runtime
      ;;
    h)
         usage
      ;;
    \?)
      echo "Invalid option: -$OPTARG" >&2
      usage
      ;;
  esac
done

echo -e "$SCRIPT_OK setup finished."
exit 0