import { Ionicons } from "@expo/vector-icons";
import { router, usePathname } from "expo-router";
import { Pressable, Text, View } from "react-native";

import { useAppSelector } from "@/store/hooks";
import { selectIsMobile } from "@/store/screen/screenSizeSlice";
import { IoniconsName } from "@/types/index";
import { useRoleAccess } from "@/hooks/useRoleAccess";

const HIDDEN_PATHS = ["/accounts/admins", "/accounts/todos"];

interface TabItem {
  label: string;
  route: string;
  icon?: IoniconsName;
}

interface TabGroup {
  basePath: string;
  tabs: TabItem[];
}

export const ContentTabs = () => {
  const pathname = usePathname();
  const isMobile = useAppSelector(selectIsMobile);
  const { isManager } = useRoleAccess();

  // Hide top tabs when user lacks permission and is on restricted Accounts pages
  if (!isManager && HIDDEN_PATHS.includes(pathname)) {
    return null;
  }

  const tabGroups: TabGroup[] = [
    {
      basePath: "/",
      tabs: [
        {
          label: "Dashboard",
          route: "/user-dashboard/index",
          icon: "home",
        },
      ],
    },
    {
      basePath: "/accounts",
      tabs: [
        {
          label: "Users",
          route: "/accounts/users",
          icon: "person-outline",
        },
        ...(isManager
          ? [
              {
                label: "Admins",
                route: "/accounts/admins",
                icon: "settings" as IoniconsName,
              },
              {
                label: "Todos",
                route: "/accounts/todos",
                icon: "list" as IoniconsName,
              },
            ]
          : []),
      ],
    },
    {
      basePath: "/logs",
      tabs: [{ label: "System", route: "/logs/system", icon: "server" }],
    },
    {
      basePath: "/reports",
      tabs: [{ label: "Inbox", route: "/reports/inbox", icon: "mail" }],
    },
    {
      basePath: "/data-protection",
      tabs: [
        { label: "General", route: "/data-protection/general", icon: "cog" },
      ],
    },
    {
      basePath: "/settings",
      tabs: [{ label: "General", route: "/settings/general", icon: "cog" }],
    },
  ];

  let currentSection = "";

  if (
    pathname.includes("/dashboard") ||
    pathname === "/(tabs)" ||
    pathname === "/"
  ) {
    currentSection = "/";
  } else if (pathname.includes("/accounts")) {
    currentSection = "/accounts";
  } else if (pathname.includes("/settings")) {
    currentSection = "/settings";
  } else if (pathname.includes("/logs")) {
    currentSection = "/logs";
  } else if (pathname.includes("/reports")) {
    currentSection = "/reports";
  } else if (pathname.includes("/data-protection")) {
    currentSection = "/data-protection";
  }

  const activeGroup = tabGroups.find(
    (group) => group.basePath === currentSection
  );
  if (!activeGroup || activeGroup.tabs.length === 0) {
    return null;
  }

  const isTabActive = (tabRoute: string) => {
    if (tabRoute === "/user-dashboard/index") {
      if (pathname === "/(tabs)" || pathname === "/") {
        return true;
      }
      return pathname.includes("/user-dashboard");
    }

    const routeSegments = tabRoute.split("/");
    const lastSegment = routeSegments[routeSegments.length - 1];

    return pathname.includes(lastSegment);
  };

  return (
    <View
      className={`bg-primaryPurpleLight ${isMobile ? "px-1" : "px-2"} ${
        isMobile ? "pt-2 pb-0" : "pt-3"
      }`}
    >
      <View className={`flex-row ${isMobile ? "justify-start gap-3" : ""}`}>
        {activeGroup.tabs.map((tab, index) => {
          const active = isTabActive(tab.route);
          return (
            <Pressable
              key={index}
              onPress={() => router.push(tab.route as any)}
              className={`relative mx-1 border-b-2 transition-colors duration-200
                ${active ? "border-white" : "border-transparent"}
                ${isMobile ? "px-1" : "px-4"}
              `}
              style={{ paddingBottom: isMobile ? 6 : 4 }}
            >
              {isMobile ? (
                <View className="items-center">
                  <Ionicons
                    name={tab.icon as IoniconsName}
                    size={20}
                    color="white"
                    style={{ opacity: active ? 1 : 0.7 }}
                  />
                  <Text
                    className="text-white text-[10px] mt-0.5"
                    style={{ opacity: active ? 1 : 0.7 }}
                  >
                    {tab.label}
                  </Text>
                </View>
              ) : (
                <Text
                  className={`text-base text-white transition-colors duration-200
                    ${active ? "font-medium" : "font-normal"}
                  `}
                >
                  {tab.label}
                </Text>
              )}
            </Pressable>
          );
        })}
      </View>
    </View>
  );
};