@extends('layout.layout')

@section('content')
    @include('components.alert')

    <div class="container-fluid app-bg calendar-page">
        <div class="page-shell">
            <div class="space-y-4">

                <x-page-title title="Calendar"
                    description="View your scheduled sessions, filter by product or track, and open session details directly from the calendar.">

                    @can('student')
                        <a href="{{ route('requests.create', ['type' => 'gift_call']) }}" class="asset-btn asset-btn--secondary">
                            <i class="fas fa-gift"></i>
                            Request Gift Call
                        </a>

                        <a href="{{ route('requests.create', ['type' => 'english_club']) }}"
                            class="asset-btn asset-btn--secondary">
                            <i class="fas fa-users"></i>
                            Join English Club
                        </a>

                        <a href="{{ route('requests.create', ['type' => 'new_session']) }}"
                            class="asset-btn asset-btn--primary">
                            <i class="fas fa-calendar-plus"></i>
                            Schedule New Session
                        </a>
                    @endcan
                </x-page-title>

                <div class="ui-card calendar-toolbar-card">
                    <div class="calendar-toolbar">
                        <div class="calendar-toolbar__info">
                            <div class="calendar-toolbar__icon">
                                <iconify-icon icon="ri:calendar-schedule-line"></iconify-icon>
                            </div>

                            <div>
                                <h5 class="calendar-toolbar__title mb-0">Schedule Filter</h5>
                                <p class="calendar-toolbar__sub mb-0">
                                    Choose a product or program to refresh the calendar view.
                                </p>
                            </div>
                        </div>

                        <form action="{{ route('calendar') }}" method="GET" id="filterForm" class="calendar-filter-form">
                            <input type="hidden" name="search" value="{{ request('search') }}">

                            <label for="filterSelect" class="calendar-filter-label">Type</label>
                            <select name="type" class="asset-select" id="filterSelect"
                                onchange="document.getElementById('filterForm').submit();">
                                <option value="" {{ request('type') ? '' : 'selected' }}>All</option>

                                @foreach ($products as $product)
                                    <option value="{{ $product->name_en }}"
                                        {{ request('type') == $product->name_en ? 'selected' : '' }}>
                                        {{ $product->name_en }}
                                    </option>
                                @endforeach

                                @foreach ($tracks as $track)
                                    <option value="{{ $track->name_en }}"
                                        {{ request('type') == $track->name_en ? 'selected' : '' }}>
                                        {{ $track->name_en }}
                                    </option>
                                @endforeach
                            </select>
                        </form>
                    </div>
                </div>

                <div class="ui-card calendar-main-card">
                    <div class="calendar-card-head">
                        <div>
                            <h5 class="calendar-card-title mb-0">Sessions Calendar</h5>
                            <p class="calendar-card-sub mb-0">
                                Click any calendar item to view its full details.
                            </p>
                        </div>

                        @if (request('type'))
                            <span class="ui-pill ui-pill--info">
                                Filtered: {{ request('type') }}
                            </span>
                        @else
                            <span class="ui-pill ui-pill--neutral">
                                All Sessions
                            </span>
                        @endif
                    </div>

                    <div class="calendar-wrap">
                        <div id="calendar"></div>
                    </div>
                </div>

            </div>
        </div>
    </div>

    <div class="modal fade calendar-event-modal" id="eventModal" tabindex="-1" aria-hidden="true">
        <div class="modal-dialog modal-xl modal-dialog-centered">
            <div class="modal-content">
                <div class="modal-header">
                    <div class="calendar-modal-head">
                        <div class="calendar-modal-icon">
                            <iconify-icon icon="ri:calendar-event-line"></iconify-icon>
                        </div>

                        <div>
                            <h5 class="calendar-modal-title mb-0">Event Details</h5>
                            <p class="calendar-modal-sub mb-0">
                                Review session timing, staff, admin, and program information.
                            </p>
                        </div>
                    </div>

                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                </div>

                <div class="modal-body">
                    <div id="eventModalBody"></div>
                </div>

                <div class="modal-footer">
                    <button type="button" class="asset-btn asset-btn--secondary" data-bs-dismiss="modal">
                        Close
                    </button>
                </div>
            </div>
        </div>
    </div>

@endsection

@push('styles')
    <style>
        .calendar-page .ui-card {
            border: 2px solid #e5e7eb !important;
            border-radius: 18px;
            background: #fff;
            box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
            padding: 1.25rem;
            overflow: hidden;
        }

        .calendar-toolbar-card {
            padding: 1rem 1.25rem !important;
        }

        .calendar-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .calendar-toolbar__info {
            display: flex;
            align-items: center;
            gap: 0.85rem;
            min-width: 0;
        }

        .calendar-toolbar__icon {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #eff6ff, #eef2ff);
            color: #071b3d;
            font-size: 1.35rem;
            flex-shrink: 0;
        }

        .calendar-toolbar__title {
            font-size: 1rem !important;
            font-weight: 850;
            color: #111827;
        }

        .calendar-toolbar__sub {
            color: #6b7280;
            font-size: 0.88rem;
            line-height: 1.5;
        }

        .calendar-filter-form {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            min-width: 280px;
        }

        .calendar-filter-label {
            font-size: 0.86rem;
            font-weight: 800;
            color: #475569;
            margin: 0;
            white-space: nowrap;
        }

        .asset-select {
            width: 100%;
            min-height: 44px;
            border: 1px solid #dbe2ea !important;
            border-radius: 12px !important;
            padding: 0.65rem 0.9rem;
            background: #fff;
            color: #111827;
            transition: 0.2s ease;
            box-shadow: none !important;
        }

        .asset-select:focus {
            outline: none;
            border-color: #b8c4d6 !important;
            box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.08) !important;
        }

        .calendar-main-card {
            min-width: 0;
        }

        .calendar-card-head {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            padding-bottom: 1rem;
            margin-bottom: 1rem;
            border-bottom: 1px solid #eef2f7;
        }

        .calendar-card-title {
            font-size: 1rem !important;
            font-weight: 850;
            color: #111827;
        }

        .calendar-card-sub {
            color: #6b7280;
            font-size: 0.9rem;
            margin-top: 0.25rem;
        }

        .calendar-wrap {
            width: 100%;
            overflow-x: auto;
            padding-bottom: 0.25rem;
        }

        #calendar {
            max-width: 100%;
            margin: 0 auto;
            min-width: 720px;
        }

        .ui-pill {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.35rem;
            border-radius: 999px;
            padding: 0.32rem 0.7rem;
            font-size: 0.76rem;
            font-weight: 850;
            line-height: 1.2;
            white-space: nowrap;
        }

        .ui-pill--info {
            background: #eef2ff;
            color: #4338ca;
        }

        .ui-pill--neutral {
            background: #f3f4f6;
            color: #374151;
        }

        .fc {
            font-family: inherit;
        }

        .fc .fc-toolbar {
            gap: 0.75rem;
            flex-wrap: wrap;
            height: auto;
        }

        .fc .fc-toolbar-title {
            font-size: 1.25rem !important;
            font-weight: 850 !important;
            color: #111827;
            height: auto;
        }

        .fc .fc-button {
            border: 1px solid #dbe2ea !important;
            border-radius: 12px !important;
            padding: 0.5rem 0.85rem !important;
            margin: 0 0.2rem !important;
            background: #fff !important;
            color: #334155 !important;
            font-size: 0.84rem !important;
            font-weight: 750 !important;
            box-shadow: none !important;
            text-transform: capitalize !important;
            height: auto;
        }

        .fc .fc-button:hover,
        .fc .fc-button-primary:not(:disabled):hover {
            background: #f8fafc !important;
            border-color: #cbd5e1 !important;
            color: #111827 !important;
        }

        .fc .fc-button-primary:disabled {
            background: #f3f4f6 !important;
            border-color: #e5e7eb !important;
            color: #9ca3af !important;
            opacity: 1 !important;
        }

        .fc .fc-button-active {
            background: #111827 !important;
            border-color: #111827 !important;
            color: #fff !important;
        }

        .fc .fc-col-header-cell {
            background: #f8fafc;
            color: #475569;
            font-size: 0.78rem;
            font-weight: 850;
            text-transform: uppercase;
            letter-spacing: 0.035em;
        }

        .fc .fc-daygrid-day-number {
            color: #334155;
            text-decoration: none;
            font-weight: 750;
            padding: 0.45rem;
        }

        .fc .fc-daygrid-day.fc-day-today {
            background: #eff6ff !important;
        }

        .fc .fc-daygrid-event {
            border-radius: 10px;
            padding: 0.18rem 0.35rem;
            border: 0 !important;
            background: #f8fafc;
        }

        .fc .fc-daygrid-event-harness {
            overflow: hidden;
        }

        .fc .fc-view-harness-active>.fc-view {
            position: static !important;
        }

        .calendar-event-pill {
            display: block;
            margin: 0;
            padding: 0.2rem 0.35rem;
            border-radius: 9px;
            background: #f8fafc;
            border: 1px solid #e5e7eb;
            font-size: 0.75rem;
            font-weight: 800;
            line-height: 1.3;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .calendar-event-modal .modal-content {
            border: 0;
            border-radius: 24px;
            box-shadow: 0 25px 60px rgba(15, 23, 42, 0.18);
            overflow: hidden;
        }

        .calendar-event-modal .modal-header {
            border-bottom: 1px solid #eef2f7;
            padding: 1.25rem 1.5rem;
            align-items: flex-start;
            gap: 1rem;
        }

        .calendar-event-modal .modal-body {
            padding: 1.5rem;
        }

        .calendar-event-modal .modal-footer {
            border-top: 1px solid #eef2f7;
            padding: 1rem 1.5rem;
        }

        .calendar-modal-head {
            display: flex;
            align-items: center;
            gap: 0.85rem;
            min-width: 0;
        }

        .calendar-modal-icon {
            width: 46px;
            height: 46px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #eff6ff, #eef2ff);
            color: #071b3d;
            font-size: 1.35rem;
            flex-shrink: 0;
        }

        .calendar-modal-title {
            font-size: 1.05rem;
            font-weight: 850;
            color: #111827;
        }

        .calendar-modal-sub {
            margin-top: 0.2rem;
            color: #64748b;
            font-size: 0.86rem;
            line-height: 1.5;
        }

        .calendar-detail-grid {
            display: grid;
            grid-template-columns: repeat(12, minmax(0, 1fr));
            gap: 0.85rem;
        }

        .calendar-detail-item {
            grid-column: span 6 / span 6;
            border: 1px solid #e5e7eb;
            background: #f8fafc;
            border-radius: 16px;
            padding: 0.95rem 1rem;
            min-width: 0;
        }

        .calendar-detail-item--full {
            grid-column: span 12 / span 12;
        }

        .calendar-detail-label {
            color: #6b7280;
            font-size: 0.74rem;
            font-weight: 850;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 0.3rem;
        }

        .calendar-detail-value {
            color: #111827;
            font-size: 0.92rem;
            font-weight: 750;
            overflow-wrap: anywhere;
            word-break: break-word;
        }

        .asset-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
        }

        @media (max-width: 991.98px) {
            .calendar-toolbar {
                align-items: flex-start;
            }

            .calendar-filter-form {
                width: 100%;
                min-width: 0;
                align-items: flex-start;
                flex-direction: column;
            }

            .calendar-detail-item {
                grid-column: span 12 / span 12;
            }

            .fc .fc-toolbar {
                flex-direction: column;
                align-items: stretch;
            }

            .fc .fc-toolbar-chunk {
                display: flex;
                justify-content: center;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 575.98px) {
            .calendar-page .ui-card {
                padding: 1rem;
            }

            .calendar-toolbar__info {
                align-items: flex-start;
            }

            #calendar {
                min-width: 650px;
            }
        }

        .teacher-profile-link {
            border: 0;
            background: transparent;
            color: #071b3d;
            font-weight: 850;
            padding: 0;
            text-decoration: underline;
            cursor: pointer;
        }

        .teacher-profile-link:hover {
            color: #0f1724;
        }

    </style>
@endpush

@push('scripts')
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/fullcalendar@6.1.8/index.global.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/flatpickr"></script>
    <script src="https://cdn.jsdelivr.net/npm/sweetalert2@11"></script>


    <script>
        function getDatePicker(receiveID) {
            const element = document.querySelector(receiveID);

            if (!element || typeof flatpickr === 'undefined') {
                return;
            }

            flatpickr(receiveID, {
                enableTime: true,
                dateFormat: 'd/m/Y H:i',
            });
        }

        getDatePicker('#startDate');
        getDatePicker('#endDate');
        getDatePicker('#editstartDate');
        getDatePicker('#editendDate');

        document.addEventListener('DOMContentLoaded', function() {
            const calendarEl = document.getElementById('calendar');

            if (!calendarEl || typeof FullCalendar === 'undefined') {
                return;
            }

            const calendar = new FullCalendar.Calendar(calendarEl, {
                initialView: 'dayGridMonth',
                height: 'auto',
                headerToolbar: {
                    left: 'prev,next today',
                    center: 'title',
                    right: 'dayGridMonth,timeGridWeek,timeGridDay,listWeek'
                },
                buttonText: {
                    today: 'Today',
                    month: 'Month',
                    week: 'Week',
                    day: 'Day',
                    list: 'List'
                },
                events: function(fetchInfo, successCallback, failureCallback) {
                    const params = new URLSearchParams(window.location.search);
                    const type = params.get('type') || '';
                    const search = params.get('search') || '';

                    $.ajax({
                        url: '/calendar/events',
                        method: 'GET',
                        data: {
                            type: type,
                            search: search
                        },
                        success: function(data) {
                            successCallback(data.events || []);
                        },
                        error: function(error) {
                            failureCallback(error);
                        }
                    });
                },
                eventClick: function(info) {
                    const props = info.event.extendedProps || {};
                    const meetingUrl = props.bbb_join_url || props.meeting_url
                        ? escapeHtml(props.bbb_join_url || props.meeting_url)
                        : '';
                    // window.props = props;
                    // console.log('props:', props);

                    let trackLabel = 'Program';
                    let categoryLabel = 'Category';

                    if (props.schedule_type !== 'track') {
                        trackLabel = 'Product';
                        categoryLabel = 'Category Product';
                    }
                    const startTime = info.event.start ?
                        info.event.start.toLocaleTimeString([], {
                            hour: '2-digit',
                            minute: '2-digit'
                        }) :
                        '-';

                    const endTime = info.event.end ?
                        info.event.end.toLocaleTimeString([], {
                            hour: '2-digit',
                            minute: '2-digit'
                        }) :
                        '-';

                    const htmlContent = `
                        <div class="calendar-detail-grid">
                            ${props.student_name ? `
                            <div class="calendar-detail-item calendar-detail-item--full" style="background:#eff6ff;border-color:#bfdbfe;">
                                <div class="calendar-detail-label">Student</div>
                                <div class="calendar-detail-value" style="color:#0f1724;">${escapeHtml(props.student_name)}</div>
                            </div>
                            ` : ''}
                            <div class="calendar-detail-item">
                                <div class="calendar-detail-label">Start</div>
                                <div class="calendar-detail-value">${startTime}</div>
                            </div>

                            <div class="calendar-detail-item">
                                <div class="calendar-detail-label">End</div>
                                <div class="calendar-detail-value">${endTime}</div>
                            </div>

                            <div class="calendar-detail-item">
                                <div class="calendar-detail-label">Staff</div>
                                <div class="calendar-detail-value">
                                    ${
                                        props.staff_id
                                            ? `<a
                                                    class="teacher-profile-link"
                                                    href="${teacherProfileBaseUrl.replace('__STAFF_ID__', props.staff_id)}">
                                                    ${escapeHtml(props.staff || '-')}
                                               </a>`
                                            : `${escapeHtml(props.staff || '-')}`
                                    }
                                </div>
                            </div>

                            <div class="calendar-detail-item">
                                <div class="calendar-detail-label">Admin</div>
                                <div class="calendar-detail-value">${escapeHtml(props.adminNames || '-')}</div>
                            </div>

                            <div class="calendar-detail-item">
                                <div class="calendar-detail-label">${categoryLabel}</div>
                                <div class="calendar-detail-value">${escapeHtml(props.category_id || '-')}</div>
                            </div>

                            <div class="calendar-detail-item">
                                <div class="calendar-detail-label">${trackLabel}</div>
                                <div class="calendar-detail-value">${escapeHtml(props.track_id || '-')}</div>
                            </div>

                            <div class="calendar-detail-item">
                                <div class="calendar-detail-label">Track Type</div>
                                <div class="calendar-detail-value">${escapeHtml(props.track_type || '-')}</div>
                            </div>

                            <div class="calendar-detail-item">
                                <div class="calendar-detail-label">Session Link</div>
                                <div class="calendar-detail-value">
                                    ${meetingUrl ? `<a href="${meetingUrl}" target="_blank" rel="noopener" class="btn btn-sm btn-outline-success">Join</a>` : '-'}
                                </div>
                            </div>
                        </div>
                    `;

                    document.getElementById('eventModalBody').innerHTML = htmlContent;

                    const eventModal = new bootstrap.Modal(document.getElementById('eventModal'));
                    eventModal.show();
                },
                eventContent: function(arg) {
                    const start = arg.event.start;

                    const startTime = start ?
                        start.toLocaleTimeString([], {
                            hour: '2-digit',
                            minute: '2-digit',
                            hour12: true
                        }) :
                        '';

                    const trackName = arg.event.extendedProps.track_id || '';
                    const studentName = arg.event.extendedProps.student_name || '';
                    const color = arg.event._def.ui.borderColor || '#071b3d';

                    return {
                        html: `
                            <span class="calendar-event-pill" style="color: ${color};">
                                ${studentName ? `<span style="opacity:.7;font-size:.7rem;">${escapeHtml(studentName)} · </span>` : ''}${escapeHtml(trackName)} ${escapeHtml(startTime)}
                            </span>
                        `
                    };
                },
            });

            document.querySelectorAll('.btn-filter').forEach(function(button) {
                button.addEventListener('click', function(e) {
                    e.preventDefault();

                    const type = this.getAttribute('data-type') || '';
                    const newUrl = new URL(window.location);

                    if (type) {
                        newUrl.searchParams.set('type', type);
                    } else {
                        newUrl.searchParams.delete('type');
                    }

                    window.history.pushState({}, '', newUrl);

                    calendar.getEvents().forEach(function(event) {
                        event.remove();
                    });

                    calendar.refetchEvents();

                    document.querySelectorAll('.btn-filter').forEach(function(btn) {
                        btn.classList.remove('btn-secondary');
                        btn.classList.add('btn-outline-secondary');
                    });

                    this.classList.remove('btn-outline-secondary');
                    this.classList.add('btn-secondary');
                });
            });
            calendar.render();
        });

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

        const teacherProfileBaseUrl = "{{ route('calendar.staff.profile', ['staff' => '__STAFF_ID__']) }}";
    </script>
@endpush