import { ApplicationMenu } from "electrobun/bun";

const SIDEBAR_MENU_ACTION_PREFIX = "sidebar-nav:";

let sidebarViewMenuSections = [];
let navigateHandler = null;

function buildMacAppMenu() {
  return {
    submenu: [
      {
        label: "About Farm Control",
        action: `${SIDEBAR_MENU_ACTION_PREFIX}/dashboard/management/about`,
      },
      { type: "separator" },
      { role: "hide" },
      { role: "hideOthers" },
      { role: "showAll" },
      { type: "separator" },
      { role: "quit" },
    ],
  };
}

function buildEditMenu() {
  return {
    label: "Edit",
    submenu: [
      { role: "undo" },
      { role: "redo" },
      { type: "separator" },
      { role: "cut" },
      { role: "copy" },
      { role: "paste" },
      { role: "pasteAndMatchStyle" },
      { role: "delete" },
      { type: "separator" },
      { role: "selectAll" },
      { type: "separator" },
      { role: "startSpeaking" },
      { role: "stopSpeaking" },
    ],
  };
}

function buildFileMenu() {
  return {
    label: "File",
    submenu: [{ role: "close" }],
  };
}

function buildWindowMenu() {
  return {
    label: "Window",
    submenu: [
      { role: "minimize" },
      { role: "zoom" },
      { type: "separator" },
      { role: "bringAllToFront" },
    ],
  };
}

function toMenuItems(items = []) {
  return items
    .map((item) => {
      if (item?.type === "divider") {
        return { type: "separator" };
      }

      const menuItem = {
        label: item.label,
      };

      if (
        item?.children &&
        Array.isArray(item.children) &&
        item.children.length
      ) {
        menuItem.submenu = toMenuItems(item.children);
      } else if (item?.path) {
        menuItem.action = `${SIDEBAR_MENU_ACTION_PREFIX}${item.path}`;
      } else {
        menuItem.enabled = false;
      }

      return menuItem;
    })
    .filter(Boolean);
}

function buildApplicationMenuTemplate() {
  const env = (process.env.NODE_ENV || "development").trim();
  const viewSubmenu = sidebarViewMenuSections.map((section) => ({
    label: section.label,
    submenu: toMenuItems(section.items || []),
  }));

  if (viewSubmenu.length === 0) {
    viewSubmenu.push({ label: "No sidebar items available", enabled: false });
  }

  if (env === "development") {
    viewSubmenu.push(
      { type: "separator" },
      {
        label: "Toggle Developer Tools",
        accelerator: "i",
        action: "toggle-devtools",
      },
    );
  }

  const template = [
    buildFileMenu(),
    buildEditMenu(),
    { label: "View", submenu: viewSubmenu },
    buildWindowMenu(),
  ];

  if (process.platform === "darwin") {
    template.unshift(buildMacAppMenu());
  }

  return template;
}

export function applyApplicationMenu() {
  ApplicationMenu.setApplicationMenu(buildApplicationMenuTemplate());
}

export function setSidebarViewMenu(sections) {
  if (!Array.isArray(sections)) {
    return false;
  }

  sidebarViewMenuSections = sections;
  applyApplicationMenu();
  return true;
}

export function setupApplicationMenuEvents({
  onNavigate,
  onToggleDevTools,
}) {
  navigateHandler = onNavigate;

  ApplicationMenu.on("application-menu-clicked", (event) => {
    const action = event?.data?.action;
    if (!action) return;

    if (action === "toggle-devtools") {
      onToggleDevTools?.();
      return;
    }

    if (action.startsWith(SIDEBAR_MENU_ACTION_PREFIX)) {
      const path = action.slice(SIDEBAR_MENU_ACTION_PREFIX.length);
      navigateHandler?.(path || "/");
    }
  });
}

export function getSidebarMenuActionPrefix() {
  return SIDEBAR_MENU_ACTION_PREFIX;
}