SDEV-415-81/week-15/lookup2

#!/bin/bash
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#  Champlain College SDEV-415-81
#
#  Linux/Unix Programming Week 14/15: Final Project  - (2020/12/18)
#
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#
#  This script is to add an entry to the datafile and sort the file in place
#  The datafile has the following format:
#     First Last Name:Phone Number:Address:Birth date:Salary
#     Karen Evich:284-758-2857:23 Edgecliff Place, Lincoln, NB 92743:7/25/53:85100
#
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
#
#  Written by Llewellyn van der Merwe <llewellyn.vandermerw@mymail.champlain.edu>, December 2020
#  Copyright (C) 2020. All Rights Reserved
#  License GNU/GPL Version 2 or later - http://www.gnu.org/licenses/gpl-2.0.html
#
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

#█████████████████████████████████████████████████████████ Function - Main ███
function main() {
  # the basic program
  while true;
  do
    # ask the user if they would like to add a entry to the datafile
    printo "███████████████████████████████████████████████████ ADD ENTRY? ███" H1
    printo "Would you like to add an entry to the datafile? [y]" Q
    # give the quit notice
    printo "To Quit! [q]" F
    echo -n " [y/q]: "
    read -r answer
    if [ ${answer^^} == "Y" ] || [ ${answer^^} == "YES" ]; then
      # get the new entry
      if getNewEntry; then
        # sort the file
        sortDataFile
        # give success notice
        printo "████████████████████████████████████████████████ ADDED SUCCESS ███" S
        printo "Entry was successfully added!" S
        # show line and line number where the entry was added
        echo -n "on-line=>"; grep -En "^${FULL_NAME}:" datafile | column -t -s :
      else
        # show error on failure
        printo "██████████████████████████████████████████████████████ FAILURE ███" F
        printo "Entry failed!" F
      fi
    elif [ ${answer^^} == "Q" ]; then
      exit 0
    fi
  done
  # we should not get here
  exit 1
}

#█████████████████████████████████████████████████████████████ Color Codes ███
normorange="\033[0;33m"
lightGreen="\033[1;32m"
lightCyan="\033[1;36m"
lightRed="\033[1;31m"
NC="\033[0m"

#████████████████████████████████████████████████████████ Function - PRINT ███
function printo() {
  if [ -z "$2" ]; then
    echo -e "$1"
  elif [ "$2" == "S" ]; then
    echo -e "${lightGreen}$1${NC}"
  elif [ "$2" == "F" ]; then
    echo -e "${lightRed}$1${NC}"
  elif [ "$2" == "H1" ]; then
    echo -e "${lightCyan}$1${NC}"
  elif [ "$2" == "Q" ]; then
    echo -e "${normorange}$1${NC}"
  fi
}

#████████████████████████████████████████████ Function - Inplace sort data ███
function sortDataFile() {
  # Sorted data in place
  sort -k2 -o datafile datafile
  # above code explained:
  #   sort get the file content
  #   sort use space to detect columns
  #   sort use -k2 to identify last names
  #   sort by this 2nd column (last names)
}

#███████████████████████████████████████████████ Function -  Get new entry ███
function getNewEntry() {
  echo
  # Ask the user the full name
  printo "██████████████████████████████████████████████████ First Last Name ███" H1
  printo "Please enter full name." Q
  printo "NAME FORMAT ==> [first last middle]" Q
  echo -n " [ENTER]: "
  read -r full_name
  # force name to be given
  while [[ ${#full_name} = 0 ]]; do
    printo "Empty Name not allowed" F
    printo "NAME FORMAT ==> [first last middle]" Q
    echo -n " [ENTER]: "
    read -r full_name
  done
  echo
  # Ask the user the Phone Number
  printo "█████████████████████████████████████████████████████ Phone Number ███" H1
  printo "Please enter phone number." Q
  printo "NUMBER FORMAT ==> [000-000-0000]" Q
  echo -n " [ENTER]: "
  read -r phone_number
  # pad empty phone_number
  if [[ ${#phone_number} = 0 ]]; then
    phone_number="__"
  fi
  echo
  # Ask the user the Address
  printo "██████████████████████████████████████████████████████████ Address ███" H1
  printo "Please enter address." Q
  printo "ADDRESS FORMAT ==> [23 Edgecliff Place, Lincoln, NB 92743]" Q
  echo -n " [ENTER]: "
  read -r address
  # pad empty phone_number
  if [[ ${#address} = 0 ]]; then
    address="__"
  fi
  echo
  # Ask the user the Birth date
  printo "███████████████████████████████████████████████████████ Birth date ███" H1
  printo "Please enter birth date." Q
  printo "DATE FORMAT ==> [7/25/1953]" Q
  echo -n " [ENTER]: "
  read -r birth_date
  # pad empty phone_number
  if [[ ${#birth_date} = 0 ]]; then
    birth_date="__"
  fi
  echo
  # Ask the user the Salary
  printo "███████████████████████████████████████████████████████ Salary ███" H1
  printo "Please enter salary." Q
  printo "SALARY FORMAT ==> [85100]" Q
  echo -n " [ENTER]: "
  read -r salary
  # pad empty phone_number
  if [[ ${#salary} = 0 ]]; then
    salary="__"
  fi
  # now add entry to file
  echo "${full_name}:${phone_number}:${address}:${birth_date}:${salary}" >> datafile
  # move name global for search
  export FULL_NAME=${full_name}
  # return successfully added
  return 0
}

#█████████████████████████████████████████████████████████████ RUN MAIN ;) ███
main

#█████████████████████████ Display the number of lines/entries in the file ███
echo
echo -n "Entries: "
cat datafile | wc -l