#!/usr/bin/env bash
#
# tux-pack — pseudo-OOP Bash archiver
# -----------------------------------
# Usage:
#   tux-pack <file|dir> <tar.gz|tar.xz|zip>
#   tux-pack -e <archive>
#
# Examples:
#   tux-pack myfolder tar.gz
#   tux-pack -e myarchive.tar.xz
#

set -euo pipefail

declare -A TuxPack=(
    [input]=""
    [format]=""
    [output]=""
)

TuxPack.new() {
    local input="$1"
    local format="${2:-}"
    TuxPack[input]="$input"
    TuxPack[format]="$format"
}

TuxPack.validate_input() {
    [[ -e "${TuxPack[input]}" ]] || {
        echo "Error: Input not found: ${TuxPack[input]}" >&2
        exit 1
    }
}

TuxPack.pack() {
    local input="${TuxPack[input]}"
    local format="${TuxPack[format]}"
    local base name

    base="$(basename "$input")"
    name="${base%/}"

    case "$format" in
        tar.gz)
            TuxPack[output]="${name}.tar.gz"
            echo "Creating ${TuxPack[output]}..."
            tar -czf "${TuxPack[output]}" "$input"
            ;;
        tar.xz)
            TuxPack[output]="${name}.tar.xz"
            echo "Creating ${TuxPack[output]}..."
            tar -cJf "${TuxPack[output]}" "$input"
            ;;
        zip)
            TuxPack[output]="${name}.zip"
            echo "Creating ${TuxPack[output]}..."
            zip -qr "${TuxPack[output]}" "$input"
            ;;
        *)
            echo "Error: Unsupported format '$format'" >&2
            exit 1
            ;;
    esac

    echo "Done: ${TuxPack[output]}"
}

TuxPack.extract() {
    local archive="$1"
    [[ -f "$archive" ]] || {
        echo "Error: File not found: $archive" >&2
        exit 1
    }

    case "$archive" in
        *.tar.gz)
            echo "Extracting $archive..."
            tar -xzf "$archive"
            ;;
        *.tar.xz)
            echo "Extracting $archive..."
            tar -xJf "$archive"
            ;;
        *.zip)
            echo "Extracting $archive..."
            unzip -q "$archive"
            ;;
        *)
            echo "Error: Unsupported archive format." >&2
            exit 1
            ;;
    esac
    echo "Extraction complete."
}

usage() {
    echo "Usage:"
    echo "  tux-pack <file|dir> <tar.gz|tar.xz|zip>"
    echo "  tux-pack -e <archive>"
    exit 1
}

# -------------------------
# Runtime logic
# -------------------------
if [[ $# -lt 2 ]]; then
    usage
fi

if [[ "$1" == "-e" ]]; then
    TuxPack.extract "$2"
else
    TuxPack.new "$1" "$2"
    TuxPack.validate_input
    TuxPack.pack
fi