// umbrella_inline.js — mounts the Cortex-OS graph inside Hermes WebUI's
// Workspace right panel. Plugin-only shim; the standalone page remains a
// fallback at /plugins/svrnty/umbrella.html.
(function () {
  "use strict";
  if (window.__svrntyUmbrellaInlineLoaded) return;
  window.__svrntyUmbrellaInlineLoaded = true;

  const LOG = (...a) => console.log("[svrnty-umbrella-inline]", ...a);
  const ICON =
    '<svg width="14" height="14" viewBox="0 0 24 24" fill="none" ' +
    'stroke="currentColor" stroke-width="2" stroke-linecap="round" ' +
    'stroke-linejoin="round" aria-hidden="true">' +
    '<circle cx="5" cy="12" r="2"/><circle cx="12" cy="5" r="2"/>' +
    '<circle cx="19" cy="12" r="2"/><circle cx="12" cy="19" r="2"/>' +
    '<path d="M6.7 10.6l3.9-4"/><path d="M13.4 6.6l3.9 4"/>' +
    '<path d="M17.3 13.4l-3.9 4"/><path d="M10.6 17.4l-3.9-4"/>' +
    '<path d="M7 12h10"/></svg>';

  let surface = null;
  let graphOpen = false;
  let previousHeading = "Workspace";
  let previousPanelWidth = "";
  let openedPanelForGraph = false;

  function $(id) {
    return document.getElementById(id);
  }

  function isWorkspacePanelOpen() {
    const htmlState = document.documentElement.dataset.workspacePanel;
    const panel = document.querySelector(".rightpanel");
    return htmlState === "open" && !!panel && getComputedStyle(panel).pointerEvents !== "none";
  }

  function ensureSurface() {
    if (surface && document.body.contains(surface)) return surface;
    const panel = document.querySelector(".rightpanel");
    const preview = $("previewArea");
    if (!panel || !preview) return null;
    surface = document.createElement("div");
    surface.id = "svrntyUmbrellaInlineSurface";
    surface.className = "svrnty-umbrella-inline-surface";
    surface.dataset.open = "false";
    surface.innerHTML =
      '<iframe class="svrnty-umbrella-inline-frame" ' +
      'title="Project graph" src="/plugins/svrnty/umbrella.html?inline=1"></iframe>';
    preview.insertAdjacentElement("afterend", surface);
    return surface;
  }

  function setWorkspaceSurfaces(mode) {
    const fileTree = $("fileTree");
    const empty = $("wsEmptyState");
    const preview = $("previewArea");
    const breadcrumb = $("breadcrumbBar");
    const graph = ensureSurface();
    if (!graph) return;
    const showGraph = mode === "graph";
    if (fileTree) fileTree.style.display = showGraph ? "none" : "";
    if (empty) empty.style.display = showGraph ? "none" : empty.style.display;
    if (preview) preview.style.display = showGraph ? "none" : "";
    if (breadcrumb) breadcrumb.style.display = showGraph ? "none" : breadcrumb.style.display;
    graph.dataset.open = showGraph ? "true" : "false";
  }

  function syncHeader(open) {
    const heading = $("workspacePanelHeading");
    const button = $("btnSvrntyWorkspaceGraph");
    if (heading) {
      if (open) {
        previousHeading = heading.textContent || "Workspace";
        heading.textContent = "Project Graph";
        heading.title = "Project Graph";
      } else {
        heading.textContent = previousHeading || "Workspace";
        heading.title = "Workspace root";
      }
    }
    if (button) {
      button.classList.toggle("active", open);
      button.setAttribute("aria-pressed", open ? "true" : "false");
    }
  }

  function resizeGraphSoon() {
    const frame = surface && surface.querySelector("iframe");
    if (!frame) return;
    setTimeout(() => {
      try {
        const cy = frame.contentWindow && frame.contentWindow.cy;
        if (cy) {
          cy.resize();
          cy.fit(null, 24);
        }
      } catch (_) {}
    }, 250);
  }

  function expandPanelForGraph() {
    const panel = document.querySelector(".rightpanel");
    if (!panel) return;
    previousPanelWidth = panel.style.width || "";
    const current = panel.getBoundingClientRect().width || 0;
    if (current < 480) {
      panel.style.width = "500px";
    }
  }

  function restorePanelWidth() {
    const panel = document.querySelector(".rightpanel");
    if (!panel) return;
    panel.style.width = previousPanelWidth;
    previousPanelWidth = "";
  }

  function openWorkspaceGraph() {
    if (graphOpen) {
      resizeGraphSoon();
      return;
    }
    openedPanelForGraph = !isWorkspacePanelOpen();
    if (typeof window.openWorkspacePanel === "function") {
      window.openWorkspacePanel("browse");
    } else if (typeof window.toggleWorkspacePanel === "function") {
      window.toggleWorkspacePanel(true);
    }
    expandPanelForGraph();
    graphOpen = true;
    setWorkspaceSurfaces("graph");
    syncHeader(true);
    resizeGraphSoon();
    LOG("opened inline graph");
  }

  function closeWorkspaceGraph() {
    if (!graphOpen) return false;
    graphOpen = false;
    setWorkspaceSurfaces("workspace");
    syncHeader(false);
    restorePanelWidth();
    if (openedPanelForGraph && typeof window.closeWorkspacePanel === "function") {
      window.closeWorkspacePanel();
    } else if (typeof window.renderBreadcrumb === "function") {
      window.renderBreadcrumb();
    }
    openedPanelForGraph = false;
    LOG("closed inline graph");
    return true;
  }

  function injectButton() {
    const actions = document.querySelector(".rightpanel .panel-actions");
    if (!actions || $("btnSvrntyWorkspaceGraph")) return !!actions;
    const refresh = $("btnRefreshPanel");
    const btn = document.createElement("button");
    btn.className = "panel-icon-btn has-tooltip has-tooltip--bottom svrnty-graph-btn";
    btn.id = "btnSvrntyWorkspaceGraph";
    btn.type = "button";
    btn.dataset.tooltip = "Project graph";
    btn.setAttribute("aria-label", "Open project graph");
    btn.setAttribute("aria-pressed", "false");
    btn.innerHTML = ICON;
    btn.addEventListener("click", (event) => {
      event.preventDefault();
      event.stopPropagation();
      openWorkspaceGraph();
    });
    if (refresh && refresh.parentElement === actions) {
      refresh.insertAdjacentElement("afterend", btn);
    } else {
      actions.appendChild(btn);
    }
    ensureSurface();
    return true;
  }

  function interceptCloseButton() {
    const close = $("btnClearPreview");
    if (!close || close.dataset.svrntyGraphCloseBound === "1") return !!close;
    close.dataset.svrntyGraphCloseBound = "1";
    close.addEventListener("click", (event) => {
      if (!graphOpen) return;
      event.preventDefault();
      event.stopImmediatePropagation();
      closeWorkspaceGraph();
    }, true);
    return true;
  }

  function init() {
    const ok = injectButton() && interceptCloseButton();
    if (!ok) {
      requestAnimationFrame(init);
      return;
    }
    window.SvrntyUmbrellaInline = {
      open: openWorkspaceGraph,
      close: closeWorkspaceGraph,
      isOpen: () => graphOpen,
    };
    LOG("ready");
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", init);
  } else {
    init();
  }
})();