<script setup lang="ts">
import log from "loglevel";

import AccountMenu from "@/components/header/AccountMenu.vue";
import MobileMenu from "@/components/header/MobileMenu.vue";
import NotificationPopover from "@/components/notifications/NotificationPopover.vue";
import NotificationPopoverContent from "@/components/notifications/NotificationPopoverContent.vue";
import ItFullScreenModal from "@/components/ui/ItFullScreenModal.vue";
import { useCourseSessionsStore } from "@/stores/courseSessions";
import { useNotificationsStore } from "@/stores/notifications";
import { useUserStore } from "@/stores/user";
import { useRouteLookups } from "@/utils/route";
import { Popover, PopoverButton, PopoverPanel } from "@headlessui/vue";
import { breakpointsTailwind, useBreakpoints } from "@vueuse/core";
import { computed, onMounted, reactive } from "vue";
import { useI18n } from "vue-i18n";

log.debug("MainNavigationBar created");

const breakpoints = useBreakpoints(breakpointsTailwind);
const userStore = useUserStore();
const courseSessionsStore = useCourseSessionsStore();
const notificationsStore = useNotificationsStore();
const { inCockpit, inCompetenceProfile, inCourse, inLearningPath } = useRouteLookups();

const { t } = useI18n();
const state = reactive({
  showMobileNavigationMenu: false,
  showMobileProfileMenu: false,
});

function popoverClick(event: Event) {
  if (breakpoints.smaller("lg").value) {
    event.preventDefault();
    state.showMobileProfileMenu = true;
  }
}

const selectedCourseSessionTitle = computed(() => {
  return courseSessionsStore.currentCourseSession?.title;
});

onMounted(() => {
  log.debug("MainNavigationBar mounted");
});
</script>

<template>
  <div>
    <Teleport to="body">
      <MobileMenu
        v-if="userStore.loggedIn"
        :show="state.showMobileNavigationMenu"
        :course-session="courseSessionsStore.currentCourseSession"
        :media-url="courseSessionsStore.currentCourseSession?.media_library_url"
        :user="userStore"
        @closemodal="state.showMobileNavigationMenu = false"
        @logout="userStore.handleLogout()"
      />
    </Teleport>
    <Teleport to="body">
      <ItFullScreenModal
        v-if="userStore.loggedIn"
        :show="state.showMobileProfileMenu"
        @closemodal="state.showMobileProfileMenu = false"
      >
        <AccountMenu />
      </ItFullScreenModal>
    </Teleport>
    <Transition name="nav">
      <nav class="bg-blue-900 text-white">
        <div class="mx-auto px-4 lg:px-8">
          <div class="relative flex h-16 justify-between">
            <div class="absolute inset-y-0 left-0 flex items-center lg:hidden">
              <!-- Mobile menu button -->
              <div class="flex" @click="state.showMobileNavigationMenu = true">
                <button
                  type="button"
                  class="h-8 w-8 text-white hover:text-sky-500 focus:text-sky-500 focus:outline-none"
                >
                  <it-icon-menu class="h-8 w-8" />
                </button>
              </div>
            </div>

            <div class="flex flex-1 items-stretch justify-start">
              <div class="hidden flex-shrink-0 items-center lg:flex">
                <div class="flex items-center">
                  <router-link to="/" class="flex">
                    <it-icon-vbv class="-ml-3 -mt-6 mr-3 h-8 w-16" />
                  </router-link>
                  <router-link to="/" class="flex">
                    <div
                      class="ml-1 border-l border-white pl-3 pr-10 text-2xl text-white"
                    >
                      {{ t("general.title") }}
                    </div>
                  </router-link>
                </div>
              </div>

              <div class="hidden space-x-8 lg:flex">
                <!-- Navigation Links Desktop -->
                <router-link
                  v-if="
                    inCourse() &&
                    courseSessionsStore.currentCourseSession &&
                    courseSessionsStore.hasCockpit
                  "
                  :to="`${courseSessionsStore.currentCourseSession.course_url}/cockpit`"
                  class="nav-item"
                  :class="{ 'nav-item--active': inCockpit() }"
                >
                  {{ t("cockpit.title") }}
                </router-link>

                <router-link
                  v-if="inCourse() && courseSessionsStore.currentCourseSession"
                  :to="courseSessionsStore.currentCourseSession.learning_path_url"
                  class="nav-item"
                  :class="{ 'nav-item--active': inLearningPath() }"
                >
                  {{ t("general.learningPath") }}
                </router-link>

                <router-link
                  v-if="inCourse() && courseSessionsStore.currentCourseSession"
                  :to="courseSessionsStore.currentCourseSession.competence_url"
                  class="nav-item"
                  :class="{ 'nav-item--active': inCompetenceProfile() }"
                >
                  {{ t("competences.title") }}
                </router-link>
              </div>
            </div>

            <div class="flex items-stretch justify-start space-x-8">
              <!-- Notification Bell & Menu -->
              <div v-if="userStore.loggedIn" class="nav-item">
                <NotificationPopover>
                  <template #toggleButtonContent>
                    <div class="flex">
                      <it-icon-notification class="h-6 w-6" />
                      <div
                        v-if="notificationsStore.hasUnread"
                        aria-label="unread notifications"
                        class="mt-1 h-1.5 w-1.5 rounded-full bg-sky-500"
                      />
                    </div>
                  </template>
                  <template #popoverContent>
                    <NotificationPopoverContent />
                  </template>
                </NotificationPopover>
              </div>

              <div
                v-if="selectedCourseSessionTitle"
                class="hidden items-center lg:inline-flex"
              >
                <div class="">
                  {{ selectedCourseSessionTitle }}
                </div>
              </div>

              <div class="nav-item">
                <div v-if="userStore.loggedIn" class="flex items-center">
                  <Popover class="relative">
                    <PopoverButton @click="popoverClick($event)">
                      <div v-if="userStore.avatar_url">
                        <img
                          class="inline-block h-8 w-8 rounded-full"
                          :src="userStore.avatar_url"
                          alt=""
                        />
                      </div>
                      <div v-else>
                        {{ userStore.getFullName }}
                      </div>
                    </PopoverButton>

                    <PopoverPanel
                      class="absolute -right-2 top-8 z-50 w-[500px] bg-white shadow-lg"
                    >
                      <div class="p-4">
                        <AccountMenu />
                      </div>
                    </PopoverPanel>
                  </Popover>
                </div>
                <div v-else><a class="" href="/login">Login</a></div>
              </div>
            </div>
          </div>
        </div>
      </nav>
    </Transition>
  </div>
</template>

<style lang="postcss" scoped>
.nav-item {
  @apply inline-flex items-center border-b-4 border-transparent px-1 pt-1 text-white hover:text-sky-500;
}

.nav-item--active {
  @apply border-sky-500;
}

.nav-enter-active,
.nav-leave-active {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.nav-enter-from,
.nav-leave-to {
  opacity: 0;
  transform: translateY(-80px);
}
</style>
