#!/usr/bin/env bash

function string::trim() {
  local var="$*"
  var="${var#"${var%%[![:space:]]*}"}"
  var="${var%"${var##*[![:space:]]}"}"
  printf "%s" "$var"
}

function string::lowercase() {
  printf "%s" "$1" | tr '[:upper:]' '[:lower:]'
}

function string::uppercase() {
  printf "%s" "$1" | tr '[:lower:]' '[:upper:]'
}

function string::replace() {
  local str="$1" from="$2" to="$3"
  echo "${str//$from/$to}"
}

function string::strip_prefix() {
  local str="$1" prefix="$2"
  echo "${str#"$prefix"}"
}

function string::strip_suffix() {
  local str="$1" suffix="$2"
  echo "${str%"$suffix"}"
}

function string::slugify() {
  echo "$1" | tr '[:upper:]' '[:lower:]' | tr ' ' '-' | tr -cd '[:alnum:]-'
}

function string::pad_right() {
  local str="$1" width="$2"
  printf "%-${width}s" "$str"
}

function string::pad_left() {
  local str="$1" width="$2"
  printf "%${width}s" "$str"
}

function string::repeat() {
  local char="$1" count="$2"
  printf "%${count}s" | tr " " "$char"
}

function string::split() {
  local str="$1" delimiter="$2"
  local -n result_ref="$3"   # nameref — caller passes array name

  IFS="$delimiter" read -ra result_ref <<< "$str"
}

function string::is_empty()     { [[ -z "$1" ]]; }
function string::is_not_empty() { [[ -n "$1" ]]; }
function string::starts_with()  { [[ "$1" == "$2"* ]]; }
function string::ends_with()    { [[ "$1" == *"$2" ]]; }
function string::contains()     { [[ "$1" == *"$2"* ]]; }