// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Commercial
// SPDX-FileCopyrightText: 2025-2026 Christian Galo

// Bootstrap tooltip and help-popover initializer (help-init.js; design D23
// "Help is disclosed by click-opened popovers"; acceptance-fixes,
// 2026-09-02, replacing tooltip-init.js).
//
// Two Bootstrap primitives, one initializer:
//
//   [data-bs-toggle="tooltip"] — a hover/focus tooltip. Bootstrap's data
//   API auto-wires dropdowns, offcanvas, collapse, and modals, but NOT
//   tooltips or popovers: each needs an explicit instance, or the browser
//   shows only the native `title` on hover and nothing on keyboard focus.
//   The disabled-control part (ui_disabled_control.html; design-system §3
//   "Disabled controls") relies on the tooltip appearing on focus so a
//   keyboard user reads the reason a control is unavailable — this is a
//   reason on a control, the one case hover tooltips remain for.
//
//   [data-bs-toggle="popover"] — the helpIcon part's click-opened help
//   popover (ui_help_icon.html; design D23). Titled with the field or
//   column it explains (its data-bs-title), with a close button in the
//   header built as a real DOM element — never string concatenation of
//   the label or the close button's markup, which would run whatever a
//   label might carry through innerHTML. Escape and a click outside any
//   open popover or its own trigger also close it; Bootstrap's
//   click-trigger popovers do not dismiss on an outside click on their
//   own.
//
// Re-runs after every htmx swap via htmx.onLoad; getOrCreateInstance is
// idempotent, so re-processing an already-wired node is a no-op. CSP-safe:
// Bootstrap and Popper position tooltips/popovers through CSSOM
// (element.style), never inline style attributes, so the strict style-src
// holds; the popover title is assembled with document.createElement, never
// innerHTML, so the strict script-src holds too.
(function () {
  "use strict";

  function initTooltips(root) {
    if (!window.bootstrap || !window.bootstrap.Tooltip) {
      return;
    }
    var nodes = (root || document).querySelectorAll('[data-bs-toggle="tooltip"]');
    Array.prototype.forEach.call(nodes, function (el) {
      window.bootstrap.Tooltip.getOrCreateInstance(el);
    });
  }

  // popoverTitle returns the title-builder Bootstrap calls each time it
  // renders this trigger's popover: a span holding the label text and a
  // close button that hides this same trigger's popover instance. Built
  // as DOM nodes (never a string), so the label's text can never be read
  // back as markup.
  function popoverTitle(el, label) {
    return function () {
      var wrap = document.createElement("span");
      wrap.className = "d-flex align-items-center justify-content-between gap-2";

      var text = document.createElement("span");
      text.textContent = label;
      wrap.appendChild(text);

      var close = document.createElement("button");
      close.type = "button";
      close.className = "btn-close";
      close.setAttribute("aria-label", "Close");
      close.addEventListener("click", function () {
        var instance = window.bootstrap.Popover.getInstance(el);
        if (instance) {
          instance.hide();
        }
      });
      wrap.appendChild(close);

      return wrap;
    };
  }

  function initPopovers(root) {
    if (!window.bootstrap || !window.bootstrap.Popover) {
      return;
    }
    var nodes = (root || document).querySelectorAll('[data-bs-toggle="popover"]');
    Array.prototype.forEach.call(nodes, function (el) {
      var label = el.getAttribute("data-bs-title") || "";
      window.bootstrap.Popover.getOrCreateInstance(el, {
        html: true,
        title: popoverTitle(el, label),
      });
    });
  }

  function hideAllPopovers() {
    if (!window.bootstrap || !window.bootstrap.Popover) {
      return;
    }
    var triggers = document.querySelectorAll('[data-bs-toggle="popover"]');
    Array.prototype.forEach.call(triggers, function (el) {
      var instance = window.bootstrap.Popover.getInstance(el);
      if (instance) {
        instance.hide();
      }
    });
  }

  // Escape closes every open popover, wherever focus is.
  document.addEventListener("keydown", function (event) {
    if (event.key === "Escape") {
      hideAllPopovers();
    }
  });

  // A click outside any popover and outside any popover trigger closes
  // every open popover. A click on a trigger (this one's or another's) is
  // left to Bootstrap's own click-toggle handling, and a click inside an
  // open popover (e.g. selecting its text) must not close it.
  document.addEventListener("click", function (event) {
    var target = event.target;
    if (target && target.closest && (target.closest('[data-bs-toggle="popover"]') || target.closest(".popover"))) {
      return;
    }
    hideAllPopovers();
  });

  function init(root) {
    initTooltips(root);
    initPopovers(root);
  }

  if (window.htmx && typeof window.htmx.onLoad === "function") {
    window.htmx.onLoad(function (content) {
      init(content);
    });
  } else if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", function () {
      init(document);
    });
  } else {
    init(document);
  }
})();