import { useEffect, useState } from "preact/hooks";
import { WelcomeBarProps, WelcomeBarState } from "./welcome-types.ts";
import { useEncryption } from "./useEncryption.ts";
import { useLogoutCleanup } from "./useServiceWorker.ts";
import EncryptionModal from "./EncryptionModal.tsx";
import NavigationMenu from "./NavigationMenu.tsx";
import LockIcon from "./LockIcon.tsx";

function normalizeRoute(path: string): string {
  if (!path || path === "/") return "/";
  return path.endsWith("/") ? path.slice(0, -1) : path;
}

/**
 * WelcomeBar Component
 * Main navigation bar with user info, encryption status, and menu.
 */
export default function WelcomeBar(
  { publicId, user_name, currentRoute, isEncrypted, stateId }: WelcomeBarProps,
) {
  const [activeRoute, setActiveRoute] = useState(normalizeRoute(currentRoute));
  const [state] = useState<WelcomeBarState>({
    photoUrl: "",
  });

  const hasValidUserId = publicId.length > 0;
  const displayName = user_name?.trim() || (hasValidUserId ? "Member" : "");

  const manageStateIdInStorage = () => {
    try {
      const storedStateId = localStorage.getItem("mystate");

      if (storedStateId === null || storedStateId !== stateId) {
        localStorage.setItem("mystate", stateId);
      }
    } catch (error) {
      console.error("Error managing stateId in localStorage:", error);
    }
  };

  useLogoutCleanup();

  useEffect(() => {
    const syncRoute = () => {
      const pathname = globalThis.location?.pathname ?? currentRoute;
      const nextRoute = normalizeRoute(pathname);
      setActiveRoute((prev) => (prev === nextRoute ? prev : nextRoute));
    };

    const handlePotentialNavigation = (event: MouseEvent) => {
      const target = event.target as HTMLElement | null;
      if (!target?.closest("a[href]")) return;
      globalThis.setTimeout(syncRoute, 0);
    };

    syncRoute();

    globalThis.addEventListener("popstate", syncRoute);
    globalThis.addEventListener("hashchange", syncRoute);
    document.addEventListener("click", handlePotentialNavigation, true);

    return () => {
      globalThis.removeEventListener("popstate", syncRoute);
      globalThis.removeEventListener("hashchange", syncRoute);
      document.removeEventListener("click", handlePotentialNavigation, true);
    };
  }, [currentRoute]);

  useEffect(() => {
    manageStateIdInStorage();
  }, [stateId]);

  const encryption = useEncryption(
    hasValidUserId ? publicId : "",
    isEncrypted,
  );

  return (
    <>
      <div class="fixed top-0 left-0 right-0 w-full theme-navbar welcomebar-shell">
        <div class="welcomebar-inner">
          <div class="welcomebar-left">
            {hasValidUserId
              ? (
                <div class="profile-pill">
                  {state.photoUrl
                    ? (
                      <img
                        src={state.photoUrl}
                        alt="User profile"
                        class="profile-avatar"
                        onError={(e) => {
                          const target = e.currentTarget as HTMLImageElement;
                          target.classList.add("is-hidden");
                          const fallback = document.getElementById(
                            `initials-${displayName || "default"}`,
                          );
                          if (fallback) fallback.classList.remove("is-hidden");
                        }}
                      />
                    )
                    : null}
                  <div
                    id={`initials-${displayName || "default"}`}
                    class={`profile-avatar profile-avatar--fallback ${
                      state.photoUrl ? "is-hidden" : ""
                    }`}
                  >
                    {displayName.slice(0, 2).toUpperCase()}
                  </div>
                  <span class="profile-name">{displayName}</span>
                </div>
              )
              : (
                <form method="get" action="/auth/login">
                  <button
                    type="submit"
                    class="theme-navbar-button welcomebar-signin"
                  >
                    Start
                  </button>
                </form>
              )}
          </div>

          <div class="welcomebar-center">
            {hasValidUserId && (
              <div class="welcomebar-lock">
                <LockIcon
                  isPasswordSet={encryption.isPasswordSet}
                  isSkipped={encryption.isSkipped}
                  onClearSkip={encryption.handleClearSkip}
                  onChangePin={encryption.handleChangePin}
                  isEncrypted={isEncrypted}
                  onRequestPin={encryption.handleOpenPasswordModal}
                />
              </div>
            )}
          </div>

          <div class="welcomebar-75-percent-from-left">
            {activeRoute !== "/" && (
              <a
                href="/"
                title="Home"
                class="welcomebar-logo-link"
                aria-label="Home"
              >
                <img
                  src="/logo.svg"
                  alt="Cyber Hybrid Hub"
                  class="welcomebar-logo-image"
                />
              </a>
            )}
          </div>

          <div class="welcomebar-right">
            <div class="welcomebar-actions">
              <details class="navigation-details">
                <summary
                  class="theme-navbar-accent welcomebar-menu-button transition-colors duration-200 focus:outline-none focus:ring-2 focus:ring-cyan-500 rounded menu-button"
                  title="Menu"
                  aria-label="Toggle navigation menu"
                >
                  <svg
                    class="w-7 h-7"
                    fill="none"
                    stroke="currentColor"
                    viewBox="0 0 24 24"
                    xmlns="http://www.w3.org/2000/svg"
                  >
                    <path
                      stroke-linecap="round"
                      stroke-linejoin="round"
                      stroke-width="2"
                      d="M4 6h16M4 12h16M4 18h16"
                    />
                  </svg>
                </summary>

                <NavigationMenu
                  isLoggedIn={hasValidUserId}
                  currentRoute={activeRoute}
                />
              </details>

              <button
                type="button"
                class="welcomebar-theme-toggle"
                title="Switch to light mode"
                aria-label="Switch to light mode"
                data-theme-toggle="true"
              >
                <svg
                  class="welcomebar-theme-icon welcomebar-theme-icon--sun"
                  fill="none"
                  stroke="currentColor"
                  viewBox="0 0 24 24"
                  aria-hidden="true"
                >
                  <circle cx="12" cy="12" r="4" stroke-width="2" />
                  <path
                    stroke-linecap="round"
                    stroke-width="2"
                    d="M12 2v2.5M12 19.5V22M4.93 4.93l1.77 1.77M17.3 17.3l1.77 1.77M2 12h2.5M19.5 12H22M4.93 19.07l1.77-1.77M17.3 6.7l1.77-1.77"
                  />
                </svg>
                <svg
                  class="welcomebar-theme-icon welcomebar-theme-icon--moon"
                  fill="none"
                  stroke="currentColor"
                  viewBox="0 0 24 24"
                  aria-hidden="true"
                >
                  <path
                    stroke-linecap="round"
                    stroke-linejoin="round"
                    stroke-width="2"
                    d="M21 12.79A9 9 0 1 1 11.21 3a7 7 0 0 0 9.79 9.79z"
                  />
                </svg>
              </button>
            </div>
          </div>
        </div>
      </div>

      {hasValidUserId && encryption.showPasswordModal && (
        <EncryptionModal
          showModal={encryption.showPasswordModal}
          tempPassword={encryption.tempPassword}
          passwordError={encryption.passwordError}
          persistAcrossDevices={encryption.persistAcrossDevices}
          onPasswordChange={encryption.handlePasswordChange}
          onSetPassword={encryption.handleSetPassword}
          onSkip={encryption.handleSkipEncryption}
          onPersistAcrossDevicesChange={encryption
            .handlePersistAcrossDevicesChange}
        />
      )}

      {hasValidUserId && (
        <EncryptionModal
          showModal={encryption.showChangePinModal}
          tempPassword={encryption.tempPassword}
          passwordError={encryption.passwordError}
          isChangeMode
          showRemovePinConfirm={encryption.showRemovePinConfirm}
          persistAcrossDevices={encryption.persistAcrossDevices}
          onPasswordChange={encryption.handlePasswordChange}
          onSetPassword={encryption.handleChangePinSubmit}
          onSkip={encryption.handleCancelRemovePin}
          onClose={encryption.handleCloseChangePin}
          onRemovePinConfirm={encryption.handleRemovePinConfirm}
          onPersistAcrossDevicesChange={encryption
            .handlePersistAcrossDevicesChange}
        />
      )}
    </>
  );
}