countdown.sh

#!/bin/bash

# Default text and settings
custom_text="⏱️"
keep_last=false
show_done=true
done_text="✅"

# Parse arguments
while [[ $# -gt 0 ]]; do
    case "$1" in
        --text)
            if [[ -z "$2" || "$2" == --* ]]; then
                echo "Error: --text requires a value"
                exit 1
            fi
            custom_text="$2"
            shift 2
            ;;
        --keep-last)
            keep_last=true
            shift
            ;;
        --done-text)
            if [[ -z "$2" || "$2" == --* ]]; then
                echo "Error: --done-text requires a value"
                exit 1
            fi
            done_text="$2"
            shift 2
            ;;
        --remove-done)
            show_done=false
            shift
            ;;
        -*)
            echo "Error: Unknown option $1"
            exit 1
            ;;
        *)
            if [[ "$1" =~ ^[0-9]+$ ]]; then
                seconds=$1
                shift
            else
                echo "Error: Invalid number of seconds: $1"
                exit 1
            fi
            ;;
    esac
done

# Validate that seconds was provided
if [ -z "$seconds" ]; then
    echo "Error: Number of seconds is required"
    echo "Usage: countdown <seconds> [--text \"Custom message\"] [--keep-last] [--done-text \"Done message\"]"
    exit 1
fi

# Store initial seconds for --print-duration
initial_seconds=$seconds

# Countdown loop
while [ $seconds -gt 0 ]; do
    printf "\r%s: %02d:%02d" "$custom_text" $((seconds / 60)) $((seconds % 60))
    sleep 1
    ((seconds--))
done

# Clean up the last line unless --keep-last is specified
if [ "$keep_last" = false ]; then
    printf "\r%*s\r" $((${#custom_text} + 7)) ""
else
    echo
fi

# Simplify the final output logic
if [ "$show_done" = true ]; then
    printf "%s %02d:%02d\n" "$done_text" $((initial_seconds / 60)) $((initial_seconds % 60))
fi