#!/usr/bin/env bash

# Source the script 'common-functions.sh'.
SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)
ROOT_DIR=$(grep --only-matching "^.*scripts[^/]*" <<<"$SCRIPT_DIR")
source "$ROOT_DIR/common-functions.sh"

_main() {
    local input_files=""
    local output_dir=""

    # Execute initial checks.
    _check_dependencies ""
    input_files=$(_get_files "par_type=file")

    local std_output=""
    std_output=$(_convert_filenames_to_text "$input_files")
    std_output=$(_text_remove_pwd "$std_output")

    if ! _display_question_box "Are you sure you want to permanently remove the selected files?"; then
        _exit_script
    fi

    _display_wait_box "2"

    # Execute the function '_main_task' for each file in parallel.
    _run_task_parallel "$input_files" "$output_dir"
    _display_result_box "$output_dir"
}

_main_task() {
    local input_file=$1
    local output_dir=$2
    local std_output=""

    # Run the main process.
    std_output=$(shred --force --zero --remove -- "$input_file" 2>&1)
    _check_output "$?" "$std_output" "$input_file" "" || return 1
}

_main "$@"