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

definePageMeta({
  middleware: ['manager-only'],
  path: '/admin/bonuses/balances/:userId',
  alias: ['/bonus-system/:userId'],
});

type TransactionItem = ManagerBonusAccountQuery['managerBonusAccount']['transactions'][number];
type PendingWithdrawalItem = ManagerBonusAccountQuery['managerBonusAccount']['pendingWithdrawals'][number];

const route = useRoute();
const userId = computed(() => String(route.params.userId || ''));
const createBonusProgramLinkMutation = useMutation(CreateBonusProgramLinkDocument, { throws: 'never' });
const bonusProgramLink = ref('');
const bonusProgramLinkExpiresAt = ref('');
const bonusProgramLinkFeedback = ref('');

const bonusAccountQuery = useQuery(ManagerBonusAccountDocument, () => ({
  userId: userId.value,
}));

const bonusAccount = computed(() => bonusAccountQuery.result.value?.managerBonusAccount ?? null);
const transactions = computed<TransactionItem[]>(() => bonusAccount.value?.transactions ?? []);
const pendingWithdrawals = computed<PendingWithdrawalItem[]>(() => bonusAccount.value?.pendingWithdrawals ?? []);

function formatAmount(value: number) {
  return new Intl.NumberFormat('ru-RU', {
    minimumFractionDigits: 0,
    maximumFractionDigits: 2,
  }).format(value);
}

function formatDateTime(value: string) {
  return new Date(value).toLocaleString('ru-RU');
}

function withdrawalStatusLabel(status: string) {
  if (status === 'APPROVED') {
    return 'Проведена';
  }
  if (status === 'REJECTED') {
    return 'Отклонена';
  }
  return 'На проверке';
}

function withdrawalStatusClass(status: string) {
  if (status === 'APPROVED') {
    return 'bg-[#def7e8] text-[#0d854a]';
  }
  if (status === 'REJECTED') {
    return 'bg-[#fde8ea] text-[#b73742]';
  }
  return 'bg-[#fff3d8] text-[#9a6100]';
}

async function generateBonusProgramLink() {
  bonusProgramLinkFeedback.value = '';

  const response = await createBonusProgramLinkMutation.mutate({
    userId: userId.value,
  });

  const payload = response?.data?.createBonusProgramLink;
  if (!payload?.url) {
    bonusProgramLinkFeedback.value = createBonusProgramLinkMutation.error.value?.message || 'Не удалось сгенерировать ссылку.';
    return;
  }

  bonusProgramLink.value = payload.url;
  bonusProgramLinkExpiresAt.value = payload.expiresAt;
  bonusProgramLinkFeedback.value = 'Ссылка готова. Её можно переслать клиенту.';
}

async function copyBonusProgramLink() {
  if (!bonusProgramLink.value) {
    return;
  }

  await navigator.clipboard.writeText(bonusProgramLink.value);
  bonusProgramLinkFeedback.value = 'Ссылка скопирована.';
}
</script>

<template>
  <section class="space-y-6">
    <div v-if="bonusAccountQuery.loading.value" class="manager-empty-state">
      Загружаем бонусный счёт...
    </div>

    <div v-else-if="!bonusAccount" class="manager-empty-state">
      Бонусный счёт не найден.
    </div>

    <template v-else>
      <div class="space-y-4">
        <UiBackHeader
          to="/admin/bonuses/balances"
          back-label="Назад к бонусам"
          :title="`Бонусный счёт ${bonusAccount.fullName}`"
          :subtitle="bonusAccount.companyName || bonusAccount.email || undefined"
        >
          <template #actions>
            <div class="flex flex-col gap-3 md:items-end">
              <div class="text-left md:text-right">
                <p class="text-[11px] font-semibold uppercase tracking-[0.18em] text-[#6a8a76]">Доступный бонус</p>
                <p class="mt-2 text-3xl font-black leading-none text-[#123824]">{{ formatAmount(bonusAccount.balance) }}</p>
              </div>

              <button
                class="btn rounded-full border-0 bg-[#123824] px-5 text-white hover:bg-[#0f2f20]"
                :disabled="createBonusProgramLinkMutation.loading.value"
                @click="generateBonusProgramLink"
              >
                {{ createBonusProgramLinkMutation.loading.value ? 'Генерируем...' : 'Сгенерировать ссылку' }}
              </button>
            </div>
          </template>
        </UiBackHeader>

        <article v-if="bonusProgramLink" class="surface-card rounded-[28px] px-5 py-4">
          <div class="flex flex-col gap-4 md:flex-row md:items-end md:justify-between">
            <div class="min-w-0 flex-1 space-y-2">
              <p class="text-[11px] font-semibold uppercase tracking-[0.18em] text-[#6a8a76]">Ссылка в бонусный кабинет</p>
              <p class="text-sm text-[#355947]">
                Эту ссылку менеджер может отправить клиенту. Дальше клиент авторизуется через отдельный Telegram-бот бонусной программы.
              </p>
              <div class="rounded-[20px] bg-[#f8fbf9] px-4 py-3 text-sm font-semibold text-[#123824] break-all">
                {{ bonusProgramLink }}
              </div>
              <p v-if="bonusProgramLinkExpiresAt" class="text-xs text-[#5c7b69]">
                Действует до {{ formatDateTime(bonusProgramLinkExpiresAt) }}
              </p>
            </div>

            <div class="flex gap-3">
              <a
                :href="bonusProgramLink"
                target="_blank"
                rel="noreferrer"
                class="btn rounded-full border border-[#d7e9de] bg-white px-5 text-[#123824] hover:bg-[#f3f8f5]"
              >
                Открыть
              </a>
              <button
                class="btn rounded-full border-0 bg-[#139957] px-5 text-white hover:bg-[#0d854a]"
                @click="copyBonusProgramLink"
              >
                Скопировать
              </button>
            </div>
          </div>

          <p v-if="bonusProgramLinkFeedback" class="mt-4 text-sm font-semibold text-[#0d854a]">
            {{ bonusProgramLinkFeedback }}
          </p>
        </article>

        <p
          v-else-if="bonusProgramLinkFeedback"
          class="text-sm font-semibold text-[#0d854a]"
        >
          {{ bonusProgramLinkFeedback }}
        </p>

        <div v-if="pendingWithdrawals.length" class="space-y-3">
          <div class="space-y-1">
            <p class="text-lg font-bold text-[#123824]">Заявки на выплату</p>
            <p class="text-sm text-[#5c7b69]">Все активные выплаты по этому бонусному счёту.</p>
          </div>

          <NuxtLink
            v-for="withdrawal in pendingWithdrawals"
            :key="withdrawal.id"
            :to="`/admin/bonuses/requests/${withdrawal.id}`"
            class="surface-card surface-card-interactive block rounded-[28px] px-5 py-4"
          >
            <div class="grid gap-4 md:grid-cols-[180px_minmax(0,1fr)_170px_140px] md:items-center md:gap-6">
              <div class="space-y-1">
                <p class="text-xs font-bold uppercase tracking-[0.16em] text-[#6a8a76]">Заявка</p>
                <p class="text-base font-bold text-[#123824]">WD-{{ withdrawal.id.slice(-6).toUpperCase() }}</p>
              </div>

              <div class="min-w-0 space-y-1">
                <p class="text-sm font-semibold text-[#123824]">Создано {{ formatDateTime(withdrawal.createdAt) }}</p>
                <p v-if="withdrawal.reviewComment" class="truncate text-sm text-[#5c7b69]">{{ withdrawal.reviewComment }}</p>
              </div>

              <div>
                <span class="rounded-full px-3 py-1 text-sm font-semibold" :class="withdrawalStatusClass(withdrawal.status)">
                  {{ withdrawalStatusLabel(withdrawal.status) }}
                </span>
              </div>

              <div class="text-left md:text-right">
                <p class="text-base font-bold text-[#123824]">{{ formatAmount(withdrawal.amount) }} ₽</p>
              </div>
            </div>
          </NuxtLink>
        </div>

        <div class="space-y-3">
          <div class="space-y-1">
            <p class="text-lg font-bold text-[#123824]">Транзакции</p>
            <p class="text-sm text-[#5c7b69]">История начислений и операций по бонусному счёту.</p>
          </div>

          <div v-if="transactions.length === 0" class="manager-empty-state mt-4">
            Начислений пока нет.
          </div>

          <div v-else class="space-y-3">
            <article
              v-for="transaction in transactions"
              :key="transaction.id"
              class="surface-card rounded-[28px] px-5 py-4"
            >
              <div class="grid gap-4 md:grid-cols-[140px_minmax(0,1fr)_180px_140px] md:items-center md:gap-6">
                <div>
                  <p class="text-base font-bold text-[#123824]">+{{ formatAmount(transaction.amount) }} ₽</p>
                </div>

                <div class="min-w-0 space-y-1">
                  <p class="text-sm font-semibold text-[#123824]">Начисление</p>
                  <p class="text-sm text-[#355947]">{{ transaction.reason }}</p>
                </div>

                <div class="text-sm text-[#5c7b69]">
                  {{ formatDateTime(transaction.createdAt) }}
                </div>

                <div class="text-left md:text-right">
                  <NuxtLink
                    v-if="transaction.orderId"
                    :to="`/admin/orders/${transaction.orderId}`"
                    class="text-sm font-semibold text-[#0d854a]"
                  >
                    Открыть заказ
                  </NuxtLink>
                </div>
              </div>
            </article>
          </div>
        </div>
      </div>
    </template>
  </section>
</template>
