test_advanced.sh

#!/bin/bash

# Source progress bar
source ./progress_bar.sh

generate_some_output_and_sleep() {
    echo "Here is some output"
    head -c 500 /dev/urandom | tr -dc 'a-zA-Z0-9~!@#$%^&*_-'
    head -c 500 /dev/urandom | tr -dc 'a-zA-Z0-9~!@#$%^&*_-'
    head -c 500 /dev/urandom | tr -dc 'a-zA-Z0-9~!@#$%^&*_-'
    head -c 500 /dev/urandom | tr -dc 'a-zA-Z0-9~!@#$%^&*_-'
    echo -e "\n\n------------------------------------------------------------------"
    echo -e "\n\n Now sleeping briefly \n\n"
    sleep 0.3
}

MAX=99
[ -n "$1" ] && MAX=$1

main() {
    # Make sure that the progress bar is cleaned up when user presses ctrl+c
    enable_trapping
    # Enable ETA
    ETA_ENABLED="true"
    # Create progress bar
    setup_scroll_area "Processing" "$MAX"
    # Compute middle for user input test
    ((MIDDLE = MAX / 2))
    for i in $(seq 1 "$MAX"); do
        if [ "$i" -eq $MIDDLE ]; then
            echo "waiting for user input"
            block_progress_bar "$i"
            read -r -p "User input: "
        else
            generate_some_output_and_sleep
            draw_progress_bar "$i" "$(date "+%r")| $i on $MAX"
        fi
    done
    destroy_scroll_area
}

main