import type { LucideIcon } from "lucide-react";
import {
  Building2,
  ClipboardList,
  DollarSign,
  FileText,
  LayoutDashboard,
  MapPin,
  Settings,
  UserRound,
  Wrench,
} from "lucide-react";

import { isAdminUser } from "@/lib/auth/user-utils";

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

export type NavGroup = {
  title: string;
  items: NavItemDef[];
  visible?: (userRoles: string | null | undefined) => boolean;
};

export const SIDEBAR_WIDTH = 244;

export const SIDEBAR_COLLAPSED_WIDTH = 76;

export const accountNavItem: NavItemDef = {
  label: "My Account",
  icon: Settings,
  path: "/account",
};

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

export const navGroups: NavGroup[] = [
  {
    title: "OPERATIONS",
    items: [
      { label: "Work Orders", icon: ClipboardList, path: "/workorders" },
      { label: "Dashboard", icon: LayoutDashboard, path: "/" },
    ],
  },
  {
    title: "DATA MANAGEMENT",
    items: [
      { label: "Vendors", icon: Building2, path: "/vendors" },
      { label: "Sites", icon: MapPin, path: "/locations" },
      { label: "Services", icon: Wrench, path: "/services" },
      { label: "Completion Docs", icon: FileText, path: "/completion-docs" },
    ],
  },
  {
    title: "TEAM",
    visible: isAdminUser,
    items: [{ label: "Team Members", icon: UserRound, path: "/employees" }],
  },
  {
    title: "APPROVALS",
    visible: isAdminUser,
    items: [{ label: "Uplift Approvals", icon: DollarSign, path: "/uplifts" }],
  },
];

export function getVisibleNavGroups(userRoles: string | null | undefined): NavGroup[] {
  return navGroups.filter((group) => group.visible == null || group.visible(userRoles));
}

export function getVisibleBadge(badge?: number): number | undefined {
  return badge != null && badge > 0 ? badge : undefined;
}

function collectNavPaths(): string[] {
  return [...navGroups.flatMap((group) => group.items), accountNavItem].map((item) => item.path);
}

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