@extends('layouts.app')

@section('content')

    <div class="px-3">

        <form class="row" action="{{ route('responsible.update', $responsible) }}" method="post">
            <div class="col-xxl-6">
                <h4>Ответственный</h4>
                @csrf

                <div class="row mb-2">
                    <label for="area_search" class="col-form-label small col-md-4 text-md-end">
                        Район
                        <sup>*</sup>
                    </label>
                    <div class="col-md-8">
                        <div class="position-relative">
                            <input type="text"
                                   class="form-control form-control-sm"
                                   id="area_search"
                                   placeholder="Введите район..."
                                   autocomplete="off"
                                   value="{{ old('area_name', $responsible->area?->name ?? '') }}"
                                   required>
                            <input type="hidden"
                                   name="area_id"
                                   id="area_id"
                                   value="{{ old('area_id', $responsible->area?->id ?? '') }}"
                                   required>
                            <div class="autocomplete-dropdown autocomplete-dropdown--order" id="area_dropdown"></div>
                        </div>
                        <div class="form-text" id="area_hint"></div>
                    </div>
                </div>
                @include('partials.input', ['name' => 'name', 'title' => 'ФИО', 'required' => true, 'value' => $responsible->name])
                @include('partials.input', ['name' => 'phone', 'title' => 'Телефон', 'required' => true, 'value' => $responsible->phone])
                @include('partials.input', ['name' => 'post', 'title' => 'Должность', 'value' => $responsible->post])

                @include('partials.submit', ['name' => 'Сохранить', 'delete' => ['form_id' => 'destroy', 'title' => 'Удалить']])
            </div>
        </form>
    </div>
    <div class="visually-hidden d-none">
        <form action="{{ route('responsible.destroy', $responsible) }}" id="destroy" method="post">
            @csrf
            @method('DELETE')
        </form>
    </div>
@endsection
@push('scripts')
    <script>
        waitForJQuery(function () {
            const $form = $('form.row[action*="responsible"]');
            const $input = $('#area_search');
            const $dropdown = $('#area_dropdown');
            const $hiddenInput = $('#area_id');
            const $hint = $('#area_hint');
            let currentFocus = -1;

            const areas = @json($areasForSearch ?? []);

            function escapeHtml(text) {
                return String(text)
                    .replace(/&/g, '&amp;')
                    .replace(/</g, '&lt;')
                    .replace(/>/g, '&gt;')
                    .replace(/"/g, '&quot;')
                    .replace(/'/g, '&#039;');
            }

            function escapeRegex(str) {
                return String(str).replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
            }

            function highlightMatch(text, query) {
                if (!text || !query) {
                    return escapeHtml(text || '');
                }
                const safeText = escapeHtml(text);
                const regex = new RegExp('(' + escapeRegex(query) + ')', 'gi');
                return safeText.replace(regex, '<strong>$1</strong>');
            }

            function showDropdown(items, query) {
                $dropdown.empty();
                currentFocus = -1;

                if (!items.length) {
                    $dropdown.html('<div class="autocomplete-item text-muted">Ничего не найдено</div>');
                    $dropdown.show();
                    return;
                }

                items.forEach(function (item) {
                    const html = '<div class="autocomplete-item" data-id="' + item.id + '" data-name="' + escapeHtml(item.name) + '">' +
                        '<div class="article">' + highlightMatch(item.name, query) + '</div>' +
                        '</div>';
                    $dropdown.append(html);
                });

                $dropdown.show();
            }

            function hideDropdown() {
                $dropdown.hide();
            }

            function selectItem($item) {
                const id = String($item.data('id') || '');
                const name = String($item.data('name') || '');

                $input.val(name);
                $hiddenInput.val(id);
                $hint.html('<i class="bi bi-check-circle text-success"></i> Выбрано: ' + name);
                $input.removeClass('is-invalid');
                hideDropdown();
            }

            function setActive($items) {
                $items.removeClass('active');
                if (currentFocus >= 0 && currentFocus < $items.length) {
                    const $active = $items.eq(currentFocus);
                    $active.addClass('active');
                    $active[0].scrollIntoView({block: 'nearest'});
                }
            }

            function searchAreas(query) {
                const normalized = String(query || '').trim().toLowerCase();
                if (normalized.length < 1) {
                    hideDropdown();
                    return;
                }

                const items = areas.filter(function (item) {
                    return String(item.name).toLowerCase().includes(normalized);
                });

                showDropdown(items.slice(0, 50), normalized);
            }

            $input.on('input', function () {
                $hiddenInput.val('');
                $hint.html('');
                $input.removeClass('is-invalid');
                searchAreas($(this).val());
            });

            $input.on('focus', function () {
                if (!$hiddenInput.val()) {
                    searchAreas($(this).val());
                }
            });

            $input.on('keydown', function (e) {
                const $items = $dropdown.find('.autocomplete-item:not(.text-muted)');

                if (e.key === 'ArrowDown') {
                    e.preventDefault();
                    currentFocus++;
                    if (currentFocus >= $items.length) {
                        currentFocus = 0;
                    }
                    setActive($items);
                } else if (e.key === 'ArrowUp') {
                    e.preventDefault();
                    currentFocus--;
                    if (currentFocus < 0) {
                        currentFocus = $items.length - 1;
                    }
                    setActive($items);
                } else if (e.key === 'Enter') {
                    if ($items.length > 0 && currentFocus > -1) {
                        e.preventDefault();
                        selectItem($items.eq(currentFocus));
                    }
                } else if (e.key === 'Escape') {
                    hideDropdown();
                }
            });

            $dropdown.on('click', '.autocomplete-item:not(.text-muted)', function () {
                selectItem($(this));
            });

            $(document).on('click', function (e) {
                if (!$(e.target).closest('#area_search, #area_dropdown').length) {
                    hideDropdown();
                }
            });

            $form.on('submit', function (e) {
                if (!$hiddenInput.val()) {
                    e.preventDefault();
                    $input.addClass('is-invalid').focus();
                    $hint.html('<span class="text-danger">Выберите район из списка</span>');
                }
            });

            const initialAreaId = String($hiddenInput.val() || '');
            const initialArea = areas.find(function (item) {
                return String(item.id) === initialAreaId;
            });
            if (initialArea) {
                $input.val(initialArea.name);
                $hint.html('<i class="bi bi-check-circle text-success"></i> Выбрано: ' + initialArea.name);
            }
        });
    </script>
@endpush