import { ApplicationMenu, type ApplicationMenuItemConfig } from "electrobun/bun";
import type { SavedConnection } from "../shared/types";
import type { ConnectionStore } from "./store/connections";

/**
 * macOS application menu (electrobun menus are macOS-only). Standard roles plus
 * app actions; custom actions are forwarded to the webview as menuAction
 * messages. Rebuilt whenever saved connections change so the Connect submenu
 * stays current.
 */
export async function applyApplicationMenu(store: ConnectionStore): Promise<void> {
	if (process.platform !== "darwin") return;

	const { stacks, connections } = await store.load();
	const item = (c: SavedConnection): ApplicationMenuItemConfig => ({
		label: c.name,
		action: `connect:${c.id}`,
	});
	const looseItems = connections.filter((c) => !c.stackId).map(item);
	const stackMenus: ApplicationMenuItemConfig[] = stacks.map((stack) => ({
		label: stack.name,
		submenu: connections.filter((c) => c.stackId === stack.id).map(item),
	}));

	const connectSubmenu: ApplicationMenuItemConfig[] = [
		...looseItems,
		...stackMenus,
		...(looseItems.length || stackMenus.length ? [{ type: "separator" } as const] : []),
		{ label: "Connection Manager…", action: "manage-connections" },
	];

	ApplicationMenu.setApplicationMenu([
		{
			submenu: [
				{ role: "hide" },
				{ role: "hideOthers" },
				{ role: "showAll" },
				{ type: "separator" },
				{ label: "Quit", role: "quit" },
			],
		},
		{
			label: "File",
			submenu: [
				{ label: "New Tab", action: "new-tab", accelerator: "t" },
				{ label: "Close Tab", action: "close-tab", accelerator: "w" },
				{ type: "separator" },
				{ label: "New Folder", action: "new-folder" },
				{ label: "New File", action: "new-file" },
				{ type: "separator" },
				{ label: "Edit File", action: "edit-file", accelerator: "e" },
				{ type: "separator" },
				{ label: "Connect", submenu: connectSubmenu },
			],
		},
		{
			label: "Edit",
			submenu: [
				{ role: "undo" },
				{ role: "redo" },
				{ type: "separator" },
				{ role: "cut" },
				{ role: "copy" },
				{ role: "paste" },
				{ role: "pasteAndMatchStyle" },
				{ role: "delete" },
				{ role: "selectAll" },
			],
		},
		{
			label: "View",
			submenu: [
				{ label: "Refresh", action: "refresh-active", accelerator: "r" },
				{ type: "separator" },
				{ role: "toggleFullScreen" },
			],
		},
		{
			label: "Window",
			submenu: [
				{ role: "minimize" },
				{ role: "zoom" },
				{ type: "separator" },
				{ role: "cycleThroughWindows" },
				{ role: "bringAllToFront" },
			],
		},
	]);
	console.log(`[menu] applied (${connections.length} connections)`);
}