<script setup lang="ts">
import { useMutation, useQuery } from '@vue/apollo-composable';
import {
  DeleteMyDeliveryAddressDocument,
  MyDeliveryAddressesDocument,
  SetMyDefaultDeliveryAddressDocument,
  type MyDeliveryAddressesQuery,
} from '~/composables/graphql/generated';

type DeliveryAddressItem = MyDeliveryAddressesQuery['myDeliveryAddresses'][number];

const route = useRoute();
const addressFeedback = ref(route.query.created === '1' ? 'Адрес сохранён.' : '');
const addressFeedbackTone = ref<'success' | 'error'>(route.query.created === '1' ? 'success' : 'error');

const deliveryAddressesQuery = useQuery(MyDeliveryAddressesDocument);
const setDefaultAddressMutation = useMutation(SetMyDefaultDeliveryAddressDocument, { throws: 'never' });
const deleteAddressMutation = useMutation(DeleteMyDeliveryAddressDocument, { throws: 'never' });

const addressBusyId = ref<string | null>(null);
const deliveryAddresses = computed<DeliveryAddressItem[]>(() => deliveryAddressesQuery.result.value?.myDeliveryAddresses ?? []);

async function setDefaultAddress(addressId: string) {
  addressFeedback.value = '';
  addressBusyId.value = addressId;

  const result = await setDefaultAddressMutation.mutate({ addressId });
  const payload = result?.data?.setMyDefaultDeliveryAddress;
  addressBusyId.value = null;

  if (!payload) {
    addressFeedbackTone.value = 'error';
    addressFeedback.value = setDefaultAddressMutation.error.value?.message || 'Не удалось сделать адрес основным.';
    return;
  }

  addressFeedbackTone.value = 'success';
  addressFeedback.value = 'Основной адрес обновлён.';
  await deliveryAddressesQuery.refetch();
}

async function deleteAddress(addressId: string) {
  addressFeedback.value = '';
  addressBusyId.value = addressId;

  const result = await deleteAddressMutation.mutate({ addressId });
  const payload = result?.data?.deleteMyDeliveryAddress;
  addressBusyId.value = null;

  if (!payload) {
    addressFeedbackTone.value = 'error';
    addressFeedback.value = deleteAddressMutation.error.value?.message || 'Не удалось удалить адрес.';
    return;
  }

  addressFeedbackTone.value = 'success';
  addressFeedback.value = 'Адрес удалён.';
  await deliveryAddressesQuery.refetch();
}
</script>

<template>
  <section class="space-y-6">
    <UiBackHeader
      to="/profile"
      back-label="Назад в профиль"
      title="Адреса доставки"
      subtitle="Выберите основной адрес для заказов или добавьте новый."
    >
      <template #actions>
        <NuxtLink
          to="/profile/addresses/new"
          class="btn rounded-full border-0 bg-[#123824] px-6 text-white hover:bg-[#0f2f20]"
        >
          Добавить
        </NuxtLink>
      </template>
    </UiBackHeader>

    <div
      v-if="addressFeedback"
      class="rounded-[24px] border px-4 py-3 text-sm font-medium"
      :class="addressFeedbackTone === 'success'
        ? 'border-[#cbe9d6] bg-[#f1fbf5] text-[#1c6b45]'
        : 'border-[#f1d1c7] bg-[#fff3ef] text-[#9d4426]'"
    >
      {{ addressFeedback }}
    </div>

    <div v-if="deliveryAddressesQuery.loading.value" class="rounded-[28px] bg-white px-5 py-4 text-sm text-[#355947] shadow-[0_18px_38px_rgba(18,56,36,0.08)]">
      Загружаем адреса...
    </div>

    <div v-else-if="deliveryAddresses.length === 0" class="rounded-[28px] bg-white px-5 py-4 text-sm text-[#355947] shadow-[0_18px_38px_rgba(18,56,36,0.08)]">
      Пока нет адресов доставки.
    </div>

    <div v-else class="space-y-4">
      <article
        v-for="address in deliveryAddresses"
        :key="address.id"
        class="rounded-[28px] bg-white px-5 py-4 shadow-[0_18px_38px_rgba(18,56,36,0.08)]"
      >
        <div class="flex flex-col gap-4 md:flex-row md:items-center md:justify-between">
          <div class="min-w-0 space-y-1">
            <div class="flex flex-wrap items-center gap-2">
              <p class="text-lg font-bold text-[#123824]">{{ address.label || 'Адрес доставки' }}</p>
              <span v-if="address.isDefault" class="badge border-0 bg-[#e8f5ec] text-[#1c6b45]">Основной</span>
            </div>
            <p class="text-sm leading-6 text-[#557562]">{{ address.unrestrictedValue || address.address }}</p>
          </div>

          <div class="flex flex-wrap gap-2">
            <button
              v-if="!address.isDefault"
              class="btn rounded-full border border-[#d7e6dc] bg-white px-5 text-[#123824] hover:border-[#bed6c7] hover:bg-[#f6fbf8]"
              :disabled="addressBusyId === address.id"
              @click="setDefaultAddress(address.id)"
            >
              {{ addressBusyId === address.id ? 'Сохраняем...' : 'Сделать основным' }}
            </button>
            <button
              class="btn rounded-full border border-[#e5cfc7] bg-[#fff5f1] px-5 text-[#a64d2d] hover:border-[#deb5a8] hover:bg-[#ffe8e0]"
              :disabled="addressBusyId === address.id"
              @click="deleteAddress(address.id)"
            >
              {{ addressBusyId === address.id ? 'Удаляем...' : 'Удалить' }}
            </button>
          </div>
        </div>
      </article>
    </div>
  </section>
</template>
