@extends('layouts.app')

@section('title', 'Оплаты')

@section('content')
    <div class="container mt-4 pb-5">

        <!-- Header -->
        <div class="d-flex justify-content-between align-items-center mb-4 flex-wrap gap-2">
            <h2 class="mb-0">Оплаты</h2>

            <!-- Month picker -->
            @php
                $extraParams = http_build_query(array_filter([
                    'search' => $search,
                    'amount_min' => $amountMin,
                    'amount_max' => $amountMax,
                ], fn ($v) => $v !== ''));
            @endphp
            <div class="d-flex align-items-center gap-2">
                <a href="?date_from={{ $prevFrom }}&date_to={{ $prevTo }}&{{ $extraParams }}"
                   class="btn btn-outline-secondary btn-sm">&larr;</a>

                <form method="GET" class="d-flex gap-2 align-items-center">
                    <input type="hidden" name="search" value="{{ $search }}">
                    <input type="hidden" name="amount_min" value="{{ $amountMin }}">
                    <input type="hidden" name="amount_max" value="{{ $amountMax }}">
                    <input type="date" name="date_from" class="form-control form-control-sm" style="width:145px"
                           value="{{ $dateFrom }}">
                    <span class="text-muted">&mdash;</span>
                    <input type="date" name="date_to" class="form-control form-control-sm" style="width:145px"
                           value="{{ $dateTo }}">
                    <button type="submit" class="btn btn-primary btn-sm">Применить</button>
                </form>

                <a href="?date_from={{ $nextFrom }}&date_to={{ $nextTo }}&{{ $extraParams }}"
                   class="btn btn-outline-secondary btn-sm">&rarr;</a>

                <button type="button" class="btn btn-success btn-sm ms-2"
                        data-bs-toggle="modal" data-bs-target="#addPaymentModal">
                    <i class="bi bi-plus-lg"></i> Внести оплату
                </button>
            </div>
        </div>

        <!-- Summary card -->
        <div class="row g-3 mb-4">
            <div class="col-md-4">
                <div class="ax-stat-tile ax-stat-tile--success h-100">
                    <div class="ax-stat-icon"><i class="bi bi-cash-coin"></i></div>
                    <div class="ax-stat-body">
                        <div class="ax-stat-value js-payments-total" data-amount="{{ $totalAmount }}">
                            {{ number_format($totalAmount, 0, ',', ' ') }} &#8376;
                        </div>
                        <div class="ax-stat-label">
                            Всего оплачено за период &bull;
                            <span id="paymentsCountLabel">{{ $payments->total() }}</span> платежей
                        </div>
                    </div>
                </div>
            </div>
            <div class="col-md-8">
                <div class="ax-card ax-card--muted h-100">
                        <!-- Search + filters -->
                        <form method="GET" class="row g-2 align-items-center">
                            <input type="hidden" name="date_from" value="{{ $dateFrom }}">
                            <input type="hidden" name="date_to" value="{{ $dateTo }}">
                            <div class="col-md-7">
                                <input type="text" name="search" class="form-control"
                                       placeholder="Поиск по ученику"
                                       value="{{ $search }}">
                            </div>
                            <div class="col-md-2">
                                <input type="number" name="amount_min" class="form-control" placeholder="Сумма от"
                                       min="0" step="0.01" value="{{ $amountMin }}">
                            </div>
                            <div class="col-md-2">
                                <input type="number" name="amount_max" class="form-control" placeholder="Сумма до"
                                       min="0" step="0.01" value="{{ $amountMax }}">
                            </div>
                            <div class="col-md-1 d-flex gap-1">
                                <button class="btn btn-outline-secondary" type="submit" title="Применить">&#128269;</button>
                                @if ($search || $amountMin !== '' || $amountMax !== '')
                                    <a href="?date_from={{ $dateFrom }}&date_to={{ $dateTo }}"
                                       class="btn btn-outline-danger" title="Сбросить">&times;</a>
                                @endif
                            </div>
                        </form>
                </div>
            </div>
        </div>

        <!-- Table -->
        <div id="paymentsAlert"></div>
        @if ($payments->isNotEmpty())
            <div class="table-responsive">
                <table class="table table-bordered table-hover align-middle">
                    <thead class="table-light">
                    <tr>
                        <th>#</th>
                        <th>Ученик</th>
                        <th>Тип</th>
                        <th class="text-end">Сумма</th>
                        <th>Дата</th>
                        <th>Описание</th>
                        <th></th>
                    </tr>
                    </thead>
                    <tbody>
                    @foreach ($payments as $p)
                        <tr>
                            <td class="text-muted small">{{ $p->id }}</td>
                            <td>
                                <a href="/student_admin_info.php?student_id={{ $p->student->id }}"
                                   class="fw-semibold text-decoration-none">
                                    {{ $p->student->last_name }} {{ $p->student->first_name }}
                                </a>
                                @if ($p->student->phone)
                                    <br><small class="text-muted">{{ $p->student->phone }}</small>
                                @endif
                            </td>
                            <td>
                                @if ($p->id == $p->first_payment_id)
                                    <span class="badge bg-primary">Новый</span>
                                @else
                                    <span class="badge bg-secondary">Повторный</span>
                                @endif
                            </td>
                            <td class="text-end text-success fw-semibold">
                                {{ number_format($p->amount, 0, ',', ' ') }} &#8376;
                            </td>
                            <td>{{ $p->payment_date }}</td>
                            <td class="text-muted small">{{ $p->description ?? '—' }}</td>
                            <td>
                                {{-- Laravel-native CSRF since Phase 9 — /delete_payment.php now
                                     has its own route+handler in PaymentController@destroy,
                                     no longer shared with any not-yet-migrated legacy page. --}}
                                <form method="POST" action="/delete_payment.php"
                                      class="js-ajax-form" data-remove-target="tr" data-alert-target="#paymentsAlert"
                                      data-amount="{{ $p->amount }}"
                                      onsubmit="return confirm('Удалить платёж #{{ $p->id }}?');">
                                    @csrf
                                    <input type="hidden" name="payment_id" value="{{ $p->id }}">
                                    <input type="hidden" name="student_id" value="{{ $p->student->id }}">
                                    <input type="hidden" name="redirect_to" value="payments.php?date_from={{ $dateFrom }}&date_to={{ $dateTo }}">
                                    <button type="submit" class="btn btn-outline-danger btn-sm">&times;</button>
                                </form>
                            </td>
                        </tr>
                    @endforeach
                    </tbody>
                    <tfoot class="table-secondary fw-bold">
                    <tr>
                        <td colspan="3">Итого</td>
                        <td class="text-end text-success js-payments-total" data-amount="{{ $totalAmount }}">
                            {{ number_format($totalAmount, 0, ',', ' ') }} &#8376;
                        </td>
                        <td colspan="3"></td>
                    </tr>
                    </tfoot>
                </table>
            </div>
        @else
            <div class="alert alert-light text-muted">Платежей за выбранный период нет.</div>
        @endif

        <!-- Pagination -->
        {{ $payments->withQueryString()->links('pagination::bootstrap-5') }}

    </div>

    {{-- Add payment. Posts to the same /add_payment.php as the student profile
         page's own modal; the only difference is that the student isn't known
         from the URL here, so it's picked with the /search_students.php
         autocomplete, and redirect_to brings us back to this filtered list
         instead of the student's profile.

         The layout renders flash messages but not $errors, so the validation
         errors PaymentController@store redirects back with are rendered here
         (and the modal reopened) rather than silently swallowed — this is the
         only form on the page that validates. --}}
    <div class="modal fade" id="addPaymentModal" tabindex="-1" aria-hidden="true">
        <div class="modal-dialog">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title">Внести оплату</h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal"></button>
                </div>
                <div class="modal-body">
                    @if ($errors->any())
                        <div class="alert alert-danger">
                            <ul class="mb-0 ps-3">
                                @foreach ($errors->all() as $message)
                                    <li>{{ $message }}</li>
                                @endforeach
                            </ul>
                        </div>
                    @endif

                    <form action="/add_payment.php" method="POST">
                        @csrf
                        <input type="hidden" name="redirect_to"
                               value="payments.php?date_from={{ $dateFrom }}&date_to={{ $dateTo }}&{{ $extraParams }}">
                        <div class="mb-3 position-relative">
                            <label for="paymentStudentSearch" class="form-label">
                                Ученик <span class="text-danger">*</span>
                            </label>
                            <input type="text" class="form-control" id="paymentStudentSearch"
                                   name="student_label" placeholder="Начните вводить имя..."
                                   autocomplete="off" value="{{ old('student_label') }}" required>
                            <input type="hidden" id="paymentStudentId" name="student_id"
                                   value="{{ old('student_id') }}">
                            <ul id="paymentStudentSuggestions" class="list-group mt-2"
                                style="display: none;"></ul>
                        </div>
                        <div class="mb-3">
                            <label class="form-label">Сумма <span class="text-danger">*</span></label>
                            <input type="number" name="amount" class="form-control"
                                   min="0" step="0.01" placeholder="50000"
                                   value="{{ old('amount') }}" required>
                        </div>
                        <div class="mb-3">
                            <label class="form-label">Дата платежа <span class="text-danger">*</span></label>
                            <input type="date" name="payment_date" class="form-control"
                                   value="{{ old('payment_date', now()->toDateString()) }}" required>
                        </div>
                        <div class="mb-3 row g-2">
                            <div class="col">
                                <label class="form-label">Период с</label>
                                <input type="date" name="start_date" class="form-control"
                                       value="{{ old('start_date') }}">
                            </div>
                            <div class="col">
                                <label class="form-label">Период по</label>
                                <input type="date" name="end_date" class="form-control"
                                       value="{{ old('end_date') }}">
                            </div>
                        </div>
                        <div class="mb-3">
                            <label class="form-label">Описание</label>
                            <input type="text" name="description" class="form-control"
                                   placeholder="Оплата за май, наличные..."
                                   value="{{ old('description') }}">
                        </div>
                        <div class="modal-footer px-0 pb-0">
                            <button type="submit" class="btn btn-success">Сохранить</button>
                            <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Отмена</button>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div>
@endsection

@push('scripts')
<script>
document.getElementById('paymentsAlert').closest('.container').addEventListener('ajax-form:success', function (e) {
    const amount = parseFloat(e.target.dataset.amount);
    if (Number.isNaN(amount)) return;

    document.querySelectorAll('.js-payments-total').forEach(el => {
        const remaining = parseFloat(el.dataset.amount) - amount;
        el.dataset.amount = remaining;
        el.textContent = remaining.toLocaleString('ru', { maximumFractionDigits: 0 }) + ' ₸';
    });

    const countLabel = document.getElementById('paymentsCountLabel');
    if (countLabel) {
        countLabel.textContent = Math.max(0, parseInt(countLabel.textContent, 10) - 1);
    }
});

// Student picker for the "Внести оплату" modal. Same /search_students.php
// endpoint the group / adviser / attendance pages use, written against plain
// fetch here because this page (unlike those) doesn't pull in jQuery.
(function () {
    const input = document.getElementById('paymentStudentSearch');
    const hidden = document.getElementById('paymentStudentId');
    const list = document.getElementById('paymentStudentSuggestions');

    function hideSuggestions() {
        list.innerHTML = '';
        list.style.display = 'none';
    }

    input.addEventListener('input', function () {
        // Typing again invalidates whatever was picked before, so the form
        // can't post a stale id alongside a freshly typed name.
        hidden.value = '';

        const query = input.value.trim();
        if (query.length <= 2) {
            hideSuggestions();
            return;
        }

        fetch('/search_students.php?query=' + encodeURIComponent(query))
            .then(r => r.ok ? r.json() : [])
            .then(function (students) {
                hideSuggestions();
                if (!students.length) return;

                students.forEach(function (student) {
                    const li = document.createElement('li');
                    li.className = 'list-group-item list-group-item-action d-flex '
                        + 'justify-content-between align-items-center';
                    li.setAttribute('role', 'button');
                    li.dataset.id = student.id;

                    const name = document.createElement('span');
                    name.textContent = student.last_name + ' ' + student.first_name;
                    const cls = document.createElement('span');
                    cls.className = 'text-muted small';
                    cls.textContent = student.class_name || '';

                    li.append(name, cls);
                    li.addEventListener('click', function () {
                        input.value = name.textContent;
                        hidden.value = student.id;
                        hideSuggestions();
                    });
                    list.appendChild(li);
                });

                list.style.display = '';
            })
            .catch(hideSuggestions);
    });

    document.addEventListener('click', function (e) {
        if (e.target !== input && !list.contains(e.target)) hideSuggestions();
    });
})();

@if ($errors->any())
// store() redirected back with validation errors — reopen the modal so the
// list of them (and the repopulated old() values) is actually visible.
new bootstrap.Modal(document.getElementById('addPaymentModal')).show();
@endif
</script>
@endpush