pgbackweb/internal/view/static/js/init-helpers.js

export function initHelpers() {
  function debounce(fn, delayMilliseconds) {
    let timeoutInstance;
    return function (...args) {
      clearTimeout(timeoutInstance);
      timeoutInstance = setTimeout(() => {
        fn.apply(this, args);
      }, delayMilliseconds);
    };
  }

  function copyToClipboard(textToCopy) {
    const successMessage = "Text copied";
    const errorMessage = "Error copying text";

    /* First, try the modern approach */
    if (navigator.clipboard && window.isSecureContext) {
      return navigator.clipboard
        .writeText(textToCopy)
        .then(() => {
          toaster.success(successMessage);
        })
        .catch((err) => {
          console.error(errorMessage, err);
          toaster.error(errorMessage);
        });
    }

    /* Fallback: use execCommand("copy") method */
    const textArea = document.createElement("textarea");
    textArea.value = textToCopy;

    textArea.style.position = "fixed";
    textArea.style.left = "-9999px";
    textArea.style.top = "-9999px";
    document.body.appendChild(textArea);
    textArea.focus();
    textArea.select();

    try {
      const successful = document.execCommand("copy");
      if (successful) {
        toaster.success(successMessage);
      } else {
        console.error("Fallback", errorMessage);
        toaster.error(errorMessage);
      }
    } catch (err) {
      console.error("Fallback", errorMessage, err);
      toaster.error(errorMessage);
    }

    document.body.removeChild(textArea);
  }

  function textareaAutoGrow(element) {
    if (!element?.style) return;
    element.style.height = "1px";
    element.style.height = (element.scrollHeight + 2) + "px";
  }

  function formatJson(inJSON) {
    if (typeof inJSON !== "string" || inJSON === "") return inJSON;
    try {
      return JSON.stringify(JSON.parse(inJSON), null, 2);
    } catch {
      return inJSON;
    }
  }

  window.debounce = debounce;
  window.copyToClipboard = copyToClipboard;
  window.textareaAutoGrow = textareaAutoGrow;
  window.formatJson = formatJson;
}