bashscript

#! /bin/bash

trap '' 2 # ignore ctrl+c

main_menu() {
   while true
      do
         clear # Clear screen for each loop of menu
         echo "============="
         echo "Menu ---"
         echo "============="
         echo "[1] Send BTC to single address"
         echo "[2] Send BTC to multiple addresses"
         echo "[3] Check Balance"
         echo "[4] Check transaction details"
         echo "[0] Exit"
         echo -e "Enter an option <return>"
         read -r -p '> '  answer # Create variable to hold option

         case "$answer" in
            1) send_single_BTC "$address"
               ;;
            2) send_to_mult_addr
               ;;
            3) check_balance
               ;;
            4) echo "Checking TxID details..."
               ;;
            0) echo "Exiting..."
               exit
               ;;
         esac
         echo -e "Hit <return> to continue"
         read -r input
      done
}

send_single_BTC(){
   echo "Which address to send:"
   read -r -p '> ' address
   confirm_input "address" "$address"
   echo "How much BTC to send:"
   read -r -p '> ' amount
   confirm_input "amount" "$amount"
   echo Sending "$amount" "BTC" to "$address"
   echo bitcoin-cli sendtoaddress "$address" "$amount" false
   echo "Transaction complete"
}

check_balance(){
   echo "Enter address to check balance:"
   read -r -p '> ' address
   confirm_input "address" "$address"
   echo Checking Full Node data...
   echo Address "$address" balance is:
   bitcoin-cli getreceivedbyaddress "$address" 1
}

confirm_input(){
   echo Please confirm "$1" "$2". Type YES to confirm:
   read -r -p'> ' input
   if [ "$input" != "YES" ]; then
      echo Action cancelled. "$input_type" not confirmed!
      exit
   fi
}

load_addr_data(){
   declare -ag addr_arr

   echo "Enter file path containing addresses:"
   read -r -p '> ' addr_fp
   if [ ! -f "$addr_fp" ]; then
      echo "$addr_fp" not found!
      return 1
   fi
   num_addr=$(wc -l "$addr_fp")
   readarray -t addr_arr < "$addr_fp"
   ((i++))
   #while (( ${#addr_arr[@]} > i )); do
   #   printf "${addr_arr[i++]}\n"
   #done
}

send_to_mult_addr(){
   load_addr_data
   val1=0.02
   count=0
   change_addr="bc1qqqr047m9quyvsgaqyf6h69kt5wzvnqdz4uydkc"
   com_params="\"\" \"{\""

   for i in "${addr_arr[@]}"
   do
      ((count++))
      com_params+="$i"
      if [ "$count" -lt "$num_addr" ]; then
         com_params+="\":$val1, "
      else
         com_params+="\":$val1"
      fi
   done
   com_params+="}\" 6 \"Periodic payments\""
   printf "%s" "$com_params"
}

main_menu