import type { LucideIcon } from "lucide-react";
import {
  // BarChart2,
  BadgeDollarSign,
  BriefcaseBusiness,
  Building2,
  ClipboardList,
  FileText,
  LayoutDashboard,
  MapPin,
  Bell,
  BarChart3,
  Star,
  Users,
  Wrench,
} from "lucide-react";

export type NavItemDef = {
  label: string;
  icon: LucideIcon;
  path: string;
  badge?: number;
};

export type NavGroup = {
  title: string;
  items: NavItemDef[];
};

export const SIDEBAR_WIDTH = 244;

export const SIDEBAR_COLLAPSED_WIDTH = 76;

export function getSidebarWidth(collapsed: boolean): number {
  return collapsed ? SIDEBAR_COLLAPSED_WIDTH : SIDEBAR_WIDTH;
}

export const navGroups: NavGroup[] = [
  {
    title: "",
    items: [
      { label: "Work Orders", icon: ClipboardList, path: "/workorders", badge: 11 },
      { label: "Dashboard", icon: LayoutDashboard, path: "/" },
      { label: "Notifications", icon: Bell, path: "/notifications" },
      // { label: "Reports", icon: BarChart2, path: "/reports" },
    ],
  },
  {
    title: "VENDORS",
    items: [
      { label: "Vendors", icon: Building2, path: "/vendors" },
      { label: "Vendor POs", icon: FileText, path: "/vendor-pos" },
      { label: "Vendor Insights", icon: BarChart3, path: "/vendors/insights" },
      { label: "Site Preferences", icon: Star, path: "/vendors/preferences" },
    ],
  },
  {
    title: "CUSTOMERS & SITES",
    items: [
      { label: "Accounts", icon: BriefcaseBusiness, path: "/accounts" },
      { label: "Sites", icon: MapPin, path: "/locations" },
    ],
  },
  {
    title: "DATA MANAGEMENT",
    items: [
      { label: "Services", icon: Wrench, path: "/settings/services" },
      { label: "Completion Docs", icon: FileText, path: "/completion-docs" },
    ],
  },
  {
    title: "TEAM",
    items: [{ label: "Team Members", icon: Users, path: "/team-members" }],
  },
  // {
  //   title: "INTERNAL",
  //   items: [{ label: "Documents", icon: FileText, path: "/documents" }],
  // },
];

// Approvals navigation is gated on the same server-derived authority the
// uplift approve/reject API enforces (UpliftService.CanApprove tier roles,
// exposed via GET uplifts/can-approve), so the sidebar never shows the queue
// to a user the backend would refuse.
const approvalsNavGroup: NavGroup = {
  title: "APPROVALS",
  items: [{ label: "Uplift Approvals", icon: BadgeDollarSign, path: "/uplifts" }],
};

export function getNavGroups({ canReviewUplifts }: { canReviewUplifts: boolean }): NavGroup[] {
  return canReviewUplifts ? [...navGroups, approvalsNavGroup] : navGroups;
}

export function getActiveNavPath(pathname: string): string | undefined {
  return [...navGroups, approvalsNavGroup]
    .flatMap((group) => group.items)
    .map((item) => item.path)
    .filter((path) =>
      path === "/" ? pathname === path : pathname === path || pathname.startsWith(`${path}/`),
    )
    .sort((firstPath, secondPath) => secondPath.length - firstPath.length)[0];
}