<script setup lang="ts">
import { useQuery } from '@vue/apollo-composable';
import {
  ManagerBonusBalancesDocument,
  ManagerReferralLinksDocument,
  ManagerUsersDocument,
  ManagerWithdrawalRequestsDocument,
  type ManagerBonusBalancesQuery,
  type ManagerReferralLinksQuery,
  type ManagerUsersQuery,
  type ManagerWithdrawalRequestsQuery,
} from '~/composables/graphql/generated';
import { messengerConnectionAvatarSrc } from '~/composables/useMessengerConnectionPresentation';

definePageMeta({
  middleware: ['manager-only'],
});

type BalanceItem = ManagerBonusBalancesQuery['managerBonusBalances'][number];
type ReferralLinkItem = ManagerReferralLinksQuery['managerReferralLinks'][number];
type ManagerUserItem = ManagerUsersQuery['managerUsers'][number];
type WithdrawalItem = ManagerWithdrawalRequestsQuery['managerWithdrawalRequests'][number];

const route = useRoute();
const router = useRouter();
const search = ref('');
const balancesQuery = useQuery(ManagerBonusBalancesDocument);
const referralLinksQuery = useQuery(ManagerReferralLinksDocument);
const usersQuery = useQuery(ManagerUsersDocument);
const withdrawalsQuery = useQuery(ManagerWithdrawalRequestsDocument, {
  status: 'PENDING',
});

const activeTab = computed<'balances' | 'withdrawals'>(() => (
  route.query.tab === 'withdrawals' ? 'withdrawals' : 'balances'
));

function setTab(tab: 'balances' | 'withdrawals') {
  void router.replace({
    query: {
      ...route.query,
      tab,
    },
  });
}

const balances = computed<BalanceItem[]>(() => balancesQuery.result.value?.managerBonusBalances ?? []);
const referralLinks = computed<ReferralLinkItem[]>(() => referralLinksQuery.result.value?.managerReferralLinks ?? []);
const users = computed<ManagerUserItem[]>(() => usersQuery.result.value?.managerUsers ?? []);
const withdrawals = computed<WithdrawalItem[]>(() => withdrawalsQuery.result.value?.managerWithdrawalRequests ?? []);

const usersById = computed(() => new Map(users.value.map((user) => [user.id, user])));

const referralLinksByReferrer = computed(() => {
  const grouped = new Map<string, ReferralLinkItem[]>();

  for (const link of referralLinks.value) {
    const existing = grouped.get(link.referrerId) ?? [];
    existing.push(link);
    grouped.set(link.referrerId, existing);
  }

  return grouped;
});

const filteredBalances = computed(() => {
  const query = search.value.trim().toLowerCase();

  return balances.value.filter((item) => {
    const links = referralLinksByReferrer.value.get(item.userId);

    if (!links?.length) {
      return false;
    }

    if (!query) {
      return true;
    }

    return [
      item.fullName,
      item.email,
      item.companyName || '',
      String(item.balance),
      ...links.flatMap((link) => [
        link.refereeName,
        link.refereeEmail,
        link.refereeCompanyName || '',
        String(link.bonusPercent),
      ]),
    ]
      .join(' ')
      .toLowerCase()
      .includes(query);
  });
});

const filteredWithdrawals = computed(() => {
  const query = search.value.trim().toLowerCase();

  return withdrawals.value.filter((item) => {
    if (!query) {
      return true;
    }

    return [
      item.requesterFullName,
      item.requesterEmail,
      item.companyName || '',
      String(item.amount),
      item.status,
      item.reviewComment || '',
    ]
      .join(' ')
      .toLowerCase()
      .includes(query);
  });
});

function userInitials(fullName: string) {
  const parts = fullName
    .trim()
    .split(/\s+/)
    .filter(Boolean)
    .slice(0, 2);

  if (!parts.length) {
    return 'FR';
  }

  return parts.map((part) => part[0]?.toUpperCase() ?? '').join('');
}
</script>

<template>
  <section class="space-y-6">
    <div class="manager-page-tabs">
      <button
        type="button"
        class="manager-page-tab"
        :class="{ 'manager-page-tab--active': activeTab === 'balances' }"
        @click="setTab('balances')"
      >
        Балансы
      </button>
      <button
        type="button"
        class="manager-page-tab"
        :class="{ 'manager-page-tab--active': activeTab === 'withdrawals' }"
        @click="setTab('withdrawals')"
      >
        Заявки на выплату
      </button>
    </div>

    <UiSectionSearchHero
      v-model="search"
      title="Бонусы"
      :search-placeholder="activeTab === 'balances' ? 'Клиент, связанный клиент, email или процент' : 'Пользователь, сумма или статус'"
    >
      <template #controls>
        <NuxtLink to="/bonus-system/referrals/new" class="btn btn-primary border-0">
          Добавить связь
        </NuxtLink>
      </template>
    </UiSectionSearchHero>

    <template v-if="activeTab === 'balances'">
      <div v-if="balancesQuery.loading.value || referralLinksQuery.loading.value || usersQuery.loading.value" class="manager-empty-state">
        Загружаем балансы...
      </div>
      <div v-else-if="filteredBalances.length === 0" class="manager-empty-state">
        Бонусных связок пока нет.
      </div>
      <div v-else class="grid gap-4 sm:grid-cols-2 xl:grid-cols-4 2xl:grid-cols-6">
        <NuxtLink
          v-for="item in filteredBalances"
          :key="item.userId"
          :to="`/bonus-system/${item.userId}`"
          class="block surface-card-interactive"
        >
          <BonusAccountCard
            :full-name="item.fullName"
            :balance="item.balance"
            :avatar-src="messengerConnectionAvatarSrc(usersById.get(item.userId)?.telegramConnection)"
            :initials="userInitials(item.fullName)"
            compact
          />
        </NuxtLink>
      </div>
    </template>

    <template v-else>
      <div v-if="withdrawalsQuery.loading.value" class="manager-empty-state">
        Загружаем заявки...
      </div>
      <div v-else-if="filteredWithdrawals.length === 0" class="manager-empty-state">
        Активных заявок на выплату сейчас нет.
      </div>
      <div v-else class="space-y-4">
        <article
          v-for="withdrawal in filteredWithdrawals"
          :key="withdrawal.id"
          class="surface-card rounded-3xl px-5 py-5"
        >
          <div class="flex flex-col gap-3 md:flex-row md:items-start md:justify-between">
            <div class="space-y-1">
              <p class="text-sm font-semibold text-[#123824]">{{ withdrawal.requesterFullName }}</p>
              <p class="text-sm text-[#355947]">{{ withdrawal.requesterEmail }}</p>
              <p v-if="withdrawal.companyName" class="text-sm text-[#355947]">{{ withdrawal.companyName }}</p>
              <p class="text-sm text-[#355947]">Сумма: {{ withdrawal.amount }}</p>
              <p class="text-xs text-[#5c7b69]">{{ new Date(withdrawal.createdAt).toLocaleString() }}</p>
            </div>
            <NuxtLink :to="`/bonus-system/withdrawals/${withdrawal.id}`" class="btn btn-accent btn-sm border-0">
              Проверить выплату
            </NuxtLink>
          </div>
        </article>
      </div>
    </template>
  </section>
</template>
