import { NavigationGroup } from "./welcome-types.ts";

/**
 * Default navigation groups configuration
 */
export const defaultNavigationGroups: NavigationGroup[] = [
  {
    id: "auth",
    label: "Authentication",
    items: [
      {
        path: "/auth/login",
        label: "Sign In",
        requiresAuth: false,
        isForm: true,
        formAction: "/auth/login",
        formMethod: "get",
      },
      {
        path: "/auth/logout",
        label: "Logout",
        requiresAuth: true,
        isForm: true,
        formAction: "/auth/logout",
        formMethod: "post",
        onClick: () => {
          localStorage.setItem("lastClickedButton", "logout");
        },
      },
    ],
  },
  {
    id: "financial-tools",
    label: "Financial Tools",
    items: [
      {
        path: `/calendar/financial-calendar/${new Date().getFullYear()}/${
          (new Date().getMonth() + 1).toString().padStart(2, "0")
        }?`,
        label: "Financial Calendar",
        requiresAuth: true,
      },
      {
        path: "/calendar/every-income",
        label: "Every Income",
        requiresAuth: true,
      },
      {
        path: "/calendar/budget-obligations",
        label: "Budget Obligations",
        requiresAuth: true,
      },
    ],
  },
  {
    id: "language",
    label: "Language & Learning",
    items: [
      {
        path: "/language/dashboard",
        label: "Dashboard",
        requiresAuth: true,
      },
      // {
      //   path: "/language/set-quiz",
      //   label: "Set Quiz",
      //   requiresAuth: true,
      // },
      {
        path: "/language/lists",
        label: "Lists",
        requiresAuth: true,
      },
      {
        path: "/language/arrange",
        label: "Arrange",
        requiresAuth: true,
      },
    ],
  },
  {
    id: "general",
    label: "General",
    items: [
      {
        path: "/",
        label: "Home",
        requiresAuth: false,
      },
      {
        path: "/user-profile",
        label: "Profile",
        requiresAuth: true,
      },
      {
        path: "#help",
        label: "Help",
        requiresAuth: false,
        disabled: true,
      },
      {
        path: "#about",
        label: "About",
        requiresAuth: false,
        disabled: true,
      },
    ],
  },
];

/**
 * Get navigation groups filtered by authentication status and current route
 *
 * When on /language/* routes, only show auth + language-specific navigation,
 * excluding the current route from the language items.
 *
 * When on /calendar/* routes, only show auth + financial-tools navigation,
 * excluding the current route from the financial-tools items.
 */
export function getNavigationGroups(
  isLoggedIn: boolean,
  currentRoute: string,
  customGroups?: NavigationGroup[],
): NavigationGroup[] {
  const groups = customGroups || defaultNavigationGroups;
  const isLanguageRoute = currentRoute.startsWith("/language/");
  const isCalendarRoute = currentRoute.startsWith("/calendar/");

  return groups
    .filter((group) => {
      // On language routes, only show auth and language groups
      if (isLanguageRoute) {
        return group.id === "auth" || group.id === "language";
      }
      // On calendar routes, only show auth and financial-tools groups
      if (isCalendarRoute) {
        return group.id === "auth" || group.id === "financial-tools";
      }
      return true;
    })
    .map((group) => ({
      ...group,
      items: group.items.filter((item) => {
        // Filter out items that require authentication if user is not logged in
        if (item.requiresAuth && !isLoggedIn) {
          return false;
        }
        // Show login only when logged out, logout only when logged in
        if (group.id === "auth") {
          if (item.path === "/auth/login" && isLoggedIn) {
            return false;
          }
          if (item.path === "/auth/logout" && !isLoggedIn) {
            return false;
          }
        }
        // On language routes, exclude the current route from language items
        if (
          isLanguageRoute && group.id === "language" &&
          item.path === currentRoute
        ) {
          return false;
        }
        // On calendar routes, exclude the current route from financial-tools items
        if (isCalendarRoute && group.id === "financial-tools") {
          // Check if current route matches or starts with the item path (for dynamic routes)
          const itemBasePath = item.path.split("?")[0]; // Remove query params
          if (
            currentRoute === itemBasePath ||
            currentRoute.startsWith(itemBasePath)
          ) {
            return false;
          }
        }
        return true;
      }),
    }))
    .filter((group) => group.items.length > 0);
}