<template>
  <div class="relative w-full md:max-w-md">
    <TrashIcon
      v-if="can('delete', 'club', 'calendar')"
      class="absolute top-3 right-3 w-5 h-5 cursor-pointer"
      @click="deleteCalendar"
    />
    <div class="flex flex-col items-center">
      <p class="text-xl font-medium">Termin erstellen</p>
    </div>
    <br />
    <Spinner v-if="loading == 'loading'" class="mx-auto" />
    <p v-else-if="loading == 'failed'">laden fehlgeschlagen</p>
    <form v-else-if="calendar != null" class="flex flex-col gap-4 py-2" @submit.prevent="triggerUpdate">
      <div>
        <Listbox v-model="calendar.type" name="type">
          <ListboxLabel>Termintyp</ListboxLabel>
          <div class="relative mt-1">
            <ListboxButton
              class="rounded-md shadow-sm relative block w-full px-3 py-2 border border-gray-300 focus:border-primary placeholder-gray-500 text-gray-900 rounded-b-md focus:outline-none focus:ring-0 focus:z-10 sm:text-sm resize-none"
            >
              <span class="block truncate w-full text-start">
                {{
                  calendarTypes.length != 0 ? (calendar.type?.type ?? "bitte auswählen") : "keine Auswahl vorhanden"
                }}</span
              >
              <span class="pointer-events-none absolute inset-y-0 right-0 flex items-center pr-2">
                <ChevronUpDownIcon class="h-5 w-5 text-gray-400" aria-hidden="true" />
              </span>
            </ListboxButton>

            <transition
              leave-active-class="transition duration-100 ease-in"
              leave-from-class="opacity-100"
              leave-to-class="opacity-0"
            >
              <ListboxOptions
                class="absolute mt-1 max-h-60 z-20 w-full overflow-auto rounded-md bg-white py-1 text-base shadow-lg ring-1 ring-black/5 focus:outline-none sm:text-sm h-32 overflow-y-auto"
              >
                <ListboxOption v-if="calendarTypes.length == 0" disabled as="template">
                  <li :class="['relative cursor-default select-none py-2 pl-10 pr-4']">
                    <span :class="['font-normal', 'block truncate']">keine Auswahl vorhanden</span>
                  </li>
                </ListboxOption>
                <ListboxOption
                  v-slot="{ active, selected }"
                  v-for="type in calendarTypes"
                  :key="type.id"
                  :value="type"
                  as="template"
                >
                  <li
                    :class="[
                      active ? 'bg-red-200 text-amber-900' : 'text-gray-900',
                      'relative cursor-default select-none py-2 pl-10 pr-4',
                    ]"
                  >
                    <span :class="[selected ? 'font-medium' : 'font-normal', 'block truncate']">{{ type.type }}</span>
                    <span v-if="selected" class="absolute inset-y-0 left-0 flex items-center pl-3 text-primary">
                      <CheckIcon class="h-5 w-5" aria-hidden="true" />
                    </span>
                  </li>
                </ListboxOption>
              </ListboxOptions>
            </transition>
          </div>
        </Listbox>
      </div>
      <div>
        <label for="title">Titel</label>
        <input type="text" id="title" required v-model="calendar.title" />
      </div>
      <div>
        <label for="content">Beschreibung (optional)</label>
        <textarea id="content" class="h-18" v-model="calendar.content"></textarea>
      </div>
      <div class="flex flex-row gap-2 items-center">
        <input type="checkbox" id="allDay" v-model="calendar.allDay" />
        <label for="allDay">ganztägig</label>
      </div>
      <div v-if="!calendar.allDay" class="flex flex-col sm:flex-row gap-2">
        <div class="w-full">
          <label for="starttime">Startzeit</label>
          <input
            type="datetime-local"
            id="starttime"
            required
            :value="formatForDateTimeLocalInput(calendar.starttime)"
            @change="
              ($event) => {
                calendar!.starttime = new Date(($event.target as HTMLInputElement).value).toISOString();
                ($refs.endtime as HTMLInputElement).min = formatForDateTimeLocalInput(
                  ($event.target as HTMLInputElement).value
                );
              }
            "
          />
        </div>
        <div class="w-full">
          <label for="endtime">Endzeit</label>
          <input
            ref="endtime"
            type="datetime-local"
            id="endtime"
            required
            :value="formatForDateTimeLocalInput(calendar.endtime)"
            :min="formatForDateTimeLocalInput(calendar.starttime)"
            @change="
              ($event) => {
                calendar!.endtime = new Date(($event.target as HTMLInputElement).value).toISOString();
              }
            "
          />
        </div>
      </div>
      <div v-else class="flex flex-col sm:flex-row gap-2">
        <div class="w-full">
          <label for="startdate">Startdatum</label>
          <input
            type="date"
            id="startdate"
            required
            :value="formatForDateInput(calendar.starttime)"
            @change="
              ($event) => {
                calendar!.starttime = new Date(($event.target as HTMLInputElement).value).toISOString();
                ($refs.enddate as HTMLInputElement).min = formatForDateInput(($event.target as HTMLInputElement).value);
              }
            "
          />
        </div>
        <div class="w-full">
          <label for="enddate">Enddatum</label>
          <input
            ref="enddate"
            type="date"
            id="enddate"
            required
            :min="formatForDateInput(calendar.starttime)"
            :value="formatForDateInput(calendar.endtime)"
            @change="
              ($event) => {
                calendar!.endtime = new Date(($event.target as HTMLInputElement).value).toISOString();
              }
            "
          />
        </div>
      </div>
      <div>
        <label for="location">Ort (optional)</label>
        <input type="text" id="location" v-model="calendar.location" />
      </div>

      <div class="flex flex-row gap-2">
        <button primary-outline type="reset" class="!w-fit" :disabled="canSaveOrReset" @click="resetForm">
          verwerfen
        </button>
        <button primary type="submit" class="!w-fit" :disabled="status == 'loading' || canSaveOrReset">
          speichern
        </button>
        <Spinner v-if="status == 'loading'" class="my-auto" />
        <SuccessCheckmark v-else-if="status?.status == 'success'" />
        <FailureXMark v-else-if="status?.status == 'failed'" />
      </div>
    </form>

    <div class="flex flex-row justify-end">
      <div class="flex flex-row gap-4 py-2">
        <button primary-outline @click="closeModal" :disabled="status == 'loading' || status?.status == 'success'">
          abbrechen / schließen
        </button>
      </div>
    </div>
  </div>
</template>

<script setup lang="ts">
import { defineAsyncComponent, defineComponent, markRaw } from "vue";
import { mapState, mapActions } from "pinia";
import { useModalStore } from "@/stores/modal";
import Spinner from "@/components/Spinner.vue";
import SuccessCheckmark from "@/components/SuccessCheckmark.vue";
import FailureXMark from "@/components/FailureXMark.vue";
import { useCalendarStore } from "@/stores/admin/club/calendar";
import type {
  CalendarViewModel,
  CreateCalendarViewModel,
  UpdateCalendarViewModel,
} from "@/viewmodels/admin/club/calendar.models";
import { Listbox, ListboxButton, ListboxOptions, ListboxOption, ListboxLabel } from "@headlessui/vue";
import { CheckIcon, ChevronUpDownIcon, TrashIcon } from "@heroicons/vue/20/solid";
import { useCalendarTypeStore } from "@/stores/admin/configuration/calendarType";
import type { CalendarTypeViewModel } from "@/viewmodels/admin/configuration/calendarType.models";
import cloneDeep from "lodash.clonedeep";
import isEqual from "lodash.isequal";
import { useAbilityStore } from "@/stores/ability";
</script>

<script lang="ts">
export default defineComponent({
  data() {
    return {
      loading: "loading" as "loading" | "fetched" | "failed",
      status: null as null | "loading" | { status: "success" | "failed"; reason?: string },
      origin: null as null | CalendarViewModel,
      calendar: null as null | CalendarViewModel,
      timeout: undefined as any,
    };
  },
  computed: {
    ...mapState(useModalStore, ["data"]),
    ...mapState(useCalendarStore, ["calendars"]),
    ...mapState(useCalendarTypeStore, ["calendarTypes"]),
    ...mapState(useAbilityStore, ["can"]),
    canSaveOrReset(): boolean {
      return isEqual(this.origin, this.calendar);
    },
  },
  mounted() {
    this.fetchCalendarTypes();
    this.fetchItem();
  },
  beforeUnmount() {
    try {
      clearTimeout(this.timeout);
    } catch (error) {}
  },
  methods: {
    ...mapActions(useModalStore, ["closeModal", "openModal"]),
    ...mapActions(useCalendarStore, ["updateCalendar", "fetchCalendarById"]),
    ...mapActions(useCalendarTypeStore, ["fetchCalendarTypes"]),
    resetForm() {
      this.calendar = cloneDeep(this.origin);
    },
    fetchItem() {
      this.fetchCalendarById(this.data ?? "")
        .then((result) => {
          this.calendar = result.data;
          this.origin = cloneDeep(result.data);
          this.loading = "fetched";
        })
        .catch((err) => {
          this.loading = "failed";
        });
    },
    triggerUpdate(e: any) {
      if (this.calendar == null) return;
      let formData = e.target.elements;
      let updateCalendar: UpdateCalendarViewModel = {
        id: this.calendar.id,
        typeId: this.calendar.type.id,
        starttime: this.calendar.allDay
          ? new Date(new Date(formData.startdate.value).setHours(0, 0, 0, 0)).toISOString()
          : new Date(formData.starttime.value).toISOString(),
        endtime: this.calendar.allDay
          ? new Date(new Date(formData.enddate.value).setHours(23, 59, 59, 999)).toISOString()
          : new Date(formData.endtime.value).toISOString(),
        title: formData.title.value,
        content: formData.content.value,
        location: formData.location.value,
        allDay: this.calendar.allDay,
      };
      this.status = "loading";
      this.updateCalendar(updateCalendar)
        .then(() => {
          this.fetchItem();
          this.status = { status: "success" };
        })
        .catch(() => {
          this.status = { status: "failed" };
        })
        .finally(() => {
          this.timeout = setTimeout(() => {
            this.status = null;
          }, 2000);
        });
    },
    deleteCalendar() {
      if (this.origin == null) return;
      this.openModal(
        markRaw(defineAsyncComponent(() => import("@/components/admin/club/calendar/DeleteCalendarModal.vue"))),
        this.origin.id
      );
    },
    formatForDateTimeLocalInput(utcDateString: string) {
      const localDate = new Date(utcDateString);

      const year = localDate.getFullYear();
      const month = String(localDate.getMonth() + 1).padStart(2, "0");
      const day = String(localDate.getDate()).padStart(2, "0");
      const hours = String(localDate.getHours()).padStart(2, "0");
      const minutes = String(localDate.getMinutes()).padStart(2, "0");

      return `${year}-${month}-${day}T${hours}:${minutes}`;
    },
    formatForDateInput(utcDateString: string) {
      const localDate = new Date(utcDateString);

      const year = localDate.getFullYear();
      const month = String(localDate.getMonth() + 1).padStart(2, "0");
      const day = String(localDate.getDate()).padStart(2, "0");

      return `${year}-${month}-${day}`;
    },
  },
});
</script>
