#!/bin/bash

# Written by Muslim Adel Abu Taha <[email protected]>
# Very simple bash phone list

contactsDB="$HOME/contactsDB"

function add_contact()
{
    clear
    cname=''
    cphone=''
    echo 'Add new contact: '
    echo '-------------------------'
    echo ''
    while [ -z $cname ]; do
        read -p 'Enter contact name: ' cname
    done

    while [ -z $cphone ]; do
        read -p 'Enter contact phone number: ' cphone
    done

    echo "$cname,$cphone" >> $contactsDB
    echo ''
    echo 'Contact added to database!'
    echo 'Press any key to continue...'
    read x

}

function search_contacts()
{
    clear
    cname=''
    echo 'Search for contact: '
    echo '-------------------------'
    echo ''
    while [ -z $cname ]; do
        read -p 'Enter contact name: ' cname
    done

    var=`grep $cname $contactsDB | uniq`
    name=`echo $var | cut -d ',' -f1`
    phone=`echo $var | cut -d ',' -f2`

    if [ -n $name ] && [ -n $phone ]; then
        clear
        echo 'Contact found:'
        echo '-------------------------'
        echo ''
        echo "Name: $name"
        echo "Phone number: $phone"
        echo ''
        echo ''
        echo 'Press any key to continue...'
        read x
    fi

}

function show_all()
{
    clear
    echo 'Show Contacts:'
    echo '-------------------------'
    echo ''
    cat $contactsDB | tr ',' '\t'
    echo ''
    echo ''
    echo 'Press any key to continue...'
    read x
}

while true;
do
    clear
    echo 'Phone List - v0.1'
    echo '----------------------'
    echo ''
    echo ''
    echo '[1] Add new contact'
    echo '[2] Search for contact'
    echo '[3] Show all contacts'
    echo ''
    echo '[4] Exit'
    echo ''
    read -p "Please choose [1,2,3,4]: " option

    case "$option" in
    '1')
        add_contact
        ;;
    '2')
        search_contacts
        ;;
    '3')
        show_all
        ;;
    '4')
        exit 0
        ;;
    esac

done