#!/bin/bash

    # tclock - Display a clock in a terminal

    BG_BLUE="$(tput setab 4)"
    FG_BLACK="$(tput setaf 0)"
    FG_WHITE="$(tput setaf 7)"

terminal_size() { # Calculate the size of the terminal
terminal_cols="$(tput cols)"
terminal_rows="$(tput lines)"
    }

banner_size() {

      # Because there are different versions of banner, we need to
      # calculate the size of our banner's output

banner_cols=0
banner_rows=0

while read; do
        [[ ${#REPLY} -gt $banner_cols ]] && banner_cols=${#REPLY}
        ((++banner_rows))
      done < <(banner "12:34 PM")
    }

display_clock() {

      # Since we are putting the clock in the center of the terminal,
      # we need to read each line of banner's output and place it in the
      # right spot.

      local row=$clock_row

      while read; do
        tput cup $row $clock_col
        echo -n "$REPLY"
        ((++row))
      done < <(banner "$(date +'%I:%M %p')")
    }

    # Set a trap to restore terminal on Ctrl-c (exit).
    # Reset character attributes, make cursor visible, and restore
    # previous screen contents (if possible).

trap 'tput sgr0; tput cnorm; tput rmcup || clear; exit 0' SIGINT

    # Save screen contents and make cursor invisible
tput smcup; tput civis

    # Calculate sizes and positions
    terminal_size
    banner_size
    clock_row=$(((terminal_rows - banner_rows) / 2))
    clock_col=$(((terminal_cols - banner_cols) / 2))
    progress_row=$((clock_row + banner_rows + 1))
    progress_col=$(((terminal_cols - 60) / 2))

    # In case the terminal cannot paint the screen with a background
    # color (tmux has this problem), create a screen-size string of 
    # spaces so we can paint the screen the hard way.

    blank_screen=
    for ((i=0; i < (terminal_cols * terminal_rows); ++i)); do
      blank_screen="${blank_screen} "
    done

    # Set the foreground and background colors and go!
    echo -n ${BG_BLUE}${FG_WHITE}
while true; do

      # Set the background and draw the clock
      
if tput bce; then # Paint the screen the easy way if bce is supported
  clear
else # Do it the hard way
tput home
echo -n "$blank_screen"
      fi
tput cup $clock_row $clock_col
display_clock
      
      # Draw a black progress bar then fill it in white
tput cup $progress_row $progress_col
 echo -n ${FG_BLACK}
 echo -n "###########################################################"
tput cup $progress_row $progress_col
echo -n ${FG_WHITE}

# Advance the progress bar every second until a minute is used up
   for ((i = $(date +%S);i < 60; ++i)); do
        echo -n "#"
        sleep 1
    done
  done