@extends('dashboard.layouts.app')

@section('content')
    <style>
        .ui-card {
            border: 0;
            border-radius: 18px;
            background: #fff;
            box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
            padding: 1.25rem;
        }

        .form-section__head {
            margin-bottom: 1rem;
            padding-bottom: 0.9rem;
            border-bottom: 1px solid #eef2f7;
        }

        .form-section__title {
            font-size: 1rem;
            font-weight: 700;
            color: #111827;
        }

        .form-section__sub {
            color: #6b7280;
            font-size: 0.92rem;
        }

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

        .asset-col-12 {
            grid-column: span 12 / span 12;
        }

        .asset-col-6 {
            grid-column: span 6 / span 6;
        }

        .asset-label {
            display: inline-block;
            margin-bottom: 0.45rem;
            font-weight: 600;
            color: #374151;
            font-size: 0.92rem;
        }

        .asset-input,
        .asset-select {
            width: 100%;
            min-height: 44px;
            border: 1px solid #dbe2ea;
            border-radius: 12px;
            padding: 0.7rem 0.9rem;
            background: #fff;
            color: #111827;
            transition: 0.2s ease;
        }

        textarea.asset-input {
            min-height: 120px;
            resize: vertical;
        }

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

        .asset-readonly {
            width: 100%;
            min-height: 44px;
            border: 1px solid #e5e7eb;
            border-radius: 12px;
            padding: 0.7rem 0.9rem;
            background: #f8fafc;
            color: #111827;
            display: flex;
            align-items: center;
        }

        .asset-invalid {
            border-color: #dc3545 !important;
        }

        .request-sub-card {
            border: 1px solid #e5e7eb;
            border-radius: 18px;
            background: #fcfcfd;
            padding: 1rem;
        }

        .request-sub-card__head {
            margin-bottom: 1rem;
            padding-bottom: 0.75rem;
            border-bottom: 1px solid #eceff3;
        }

        .request-sub-card__title {
            font-size: 0.98rem;
            font-weight: 700;
            color: #111827;
            margin-bottom: 0.2rem;
        }

        .request-sub-card__sub {
            color: #6b7280;
            font-size: 0.9rem;
            margin: 0;
        }

        .empty-regularization-box {
            display: flex;
            align-items: center;
            gap: 0.85rem;
            padding: 1rem 1.1rem;
            border: 1px dashed #cbd5e1;
            border-radius: 14px;
            background: #f8fafc;
            color: #475569;
        }

        .empty-regularization-box__icon {
            font-size: 1.35rem;
            line-height: 1;
        }

        .empty-regularization-box__title {
            font-weight: 700;
            color: #1e293b;
            margin-bottom: 0.15rem;
        }

        .empty-regularization-box__text {
            font-size: 0.9rem;
        }

        .asset-actions {
            display: flex;
            justify-content: end;
            gap: 0.75rem;
            margin-top: 1rem;
            flex-wrap: wrap;
        }

        .regularization-table-wrap .table {
            margin-bottom: 0;
            border-color: #e5e7eb;
        }

        .regularization-table-wrap .table thead th {
            background: #f8fafc;
            color: #334155;
            font-weight: 700;
            border-color: #e5e7eb;
            vertical-align: middle;
            text-align: center;
        }

        .regularization-table-wrap .table tbody td {
            border-color: #e5e7eb;
            vertical-align: middle;
        }

        .select2-container {
            width: 100% !important;
        }

        .select2-container .selection {
            display: block !important;
        }

        .select2-container--default .select2-selection--single,
        .select2-container--default .select2-selection--multiple {
            min-height: 44px;
            border: 1px solid #dbe2ea;
            border-radius: 12px;
            padding: 0.35rem 0.45rem;
            background: #fff;
        }

        .select2-container--default .select2-selection--single .select2-selection__rendered {
            line-height: 30px;
            color: #111827;
        }

        .select2-container--default .select2-selection--single .select2-selection__arrow {
            height: 42px;
        }

        @media (max-width: 991.98px) {
            .asset-col-6,
            .asset-col-12 {
                grid-column: span 12 / span 12;
            }
        }
    </style>

    @include('components.alert')

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

                <x-page-title
                    title="Create Regularization / Permission"
                    description="Create a regularization or permission request and fill the required timing details based on the selected type.">
                    <a href="{{ route('regularizations_permissions.index') }}" class="asset-btn asset-btn--secondary">
                        Back to List
                    </a>
                </x-page-title>

                <form id="regularizationForm" method="POST">
                    @csrf

                    <div class="ui-card">
                        <div class="form-section">
                            <div class="form-section__head">
                                <h5 class="form-section__title mb-1">Request Information</h5>
                                <p class="form-section__sub mb-0">
                                    Select the employee, request type, timing details, and the reason for submission.
                                </p>
                            </div>

                            <div class="asset-form-grid">
                                <div class="asset-col-6">
                                    <label class="asset-label">Employee <span class="text-danger">*</span></label>

                                    @if (isHumanResource())
                                        <select name="staff_id" id="staff_id" class="asset-select select2" required>
                                            <option value="">Choose Staff</option>
                                            @foreach ($staffs as $s)
                                                <option value="{{ $s->id }}"
                                                    {{ (string) ($selectedStaffId ?? old('staff_id', '')) === (string) $s->id ? 'selected' : '' }}>
                                                    {{ $s->staff_no }} -
                                                    {{ optional($s->user)->full_name ?? ($s->first_name . ' ' . $s->last_name) }}
                                                </option>
                                            @endforeach
                                        </select>
                                    @else
                                        <div class="asset-readonly">
                                            {{ auth()->user()?->staff?->staff_no }} -
                                            {{ auth()->user()?->full_name ?? (auth()->user()?->staff?->first_name . ' ' . auth()->user()?->staff?->last_name) }}
                                        </div>
                                        <input type="hidden" name="staff_id" value="{{ auth()->user()?->staff?->id }}">
                                    @endif

                                    @error('staff_id')
                                        <div class="invalid-feedback d-block">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="asset-col-6">
                                    <label for="type" class="asset-label">Type <span class="text-danger">*</span></label>
                                    <select name="type" id="type" class="asset-select @error('type') asset-invalid @enderror" required>
                                        <option value="">Select Type</option>
                                        <option value="regularizations" {{ old('type') == 'regularizations' ? 'selected' : '' }}>
                                            Regularization
                                        </option>
                                        <option value="permissions" {{ old('type') == 'permissions' ? 'selected' : '' }}>
                                            Permission
                                        </option>
                                    </select>
                                    @error('type')
                                        <div class="invalid-feedback d-block">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="asset-col-6 permission-only-field">
                                    <label for="date" class="asset-label">Date</label>
                                    <input type="date" name="date" id="date"
                                        class="asset-input @error('date') asset-invalid @enderror"
                                        value="{{ old('date') }}">
                                    @error('date')
                                        <div class="invalid-feedback d-block">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="asset-col-6 permission-only-field">
                                    <label for="from_time" class="asset-label">From Time</label>
                                    <input type="time" name="from_time" id="from_time"
                                        class="asset-input @error('from_time') asset-invalid @enderror"
                                        value="{{ old('from_time') }}">
                                    @error('from_time')
                                        <div class="invalid-feedback d-block">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="asset-col-6 permission-only-field">
                                    <label for="end_time" class="asset-label">End Time</label>
                                    <input type="time" name="end_time" id="end_time"
                                        class="asset-input @error('end_time') asset-invalid @enderror"
                                        value="{{ old('end_time') }}">
                                    @error('end_time')
                                        <div class="invalid-feedback d-block">{{ $message }}</div>
                                    @enderror
                                </div>

                                <div class="asset-col-12">
                                    <label for="reason" class="asset-label">Reason <span class="text-danger">*</span></label>
                                    <textarea name="reason" id="reason"
                                        class="asset-input @error('reason') asset-invalid @enderror"
                                        rows="4" required>{{ old('reason') }}</textarea>
                                    @error('reason')
                                        <div class="invalid-feedback d-block">{{ $message }}</div>
                                    @enderror
                                </div>
                            </div>

                            <div id="alertContainer" class="mt-3"></div>
                        </div>
                    </div>

                    <div class="ui-card" id="regularization-fields" style="display: none;">
                        <div class="form-section">
                            <div class="form-section__head">
                                <h5 class="form-section__title mb-1">Regularization Details</h5>
                                <p class="form-section__sub mb-0">
                                    Select the date range, then fill working-day check-in and check-out details.
                                </p>
                            </div>

                            <div class="asset-form-grid">
                                <div class="asset-col-6">
                                    <label for="date_from" class="asset-label">Date From</label>
                                    <input type="date" id="date_from" name="date_from" class="asset-input">
                                </div>

                                <div class="asset-col-6">
                                    <label for="date_to" class="asset-label">Date To</label>
                                    <input type="date" id="date_to" name="date_to" class="asset-input">
                                </div>
                            </div>

                            <div id="working-days-table" class="mt-4">
                                <div class="empty-regularization-box">
                                    <div class="empty-regularization-box__icon">
                                        <iconify-icon icon="mdi:calendar-clock-outline"></iconify-icon>
                                    </div>
                                    <div>
                                        <div class="empty-regularization-box__title">No working days generated yet</div>
                                        <div class="empty-regularization-box__text">
                                            Select both <strong>Date From</strong> and <strong>Date To</strong> to generate the working days table.
                                        </div>
                                    </div>
                                </div>
                            </div>
                        </div>
                    </div>

                    <div class="asset-actions">
                        <a href="{{ route('regularizations_permissions.index') }}" class="asset-btn asset-btn--secondary">
                            Cancel
                        </a>
                        <button type="submit" id="btnSubmit" class="asset-btn asset-btn--primary">
                            <span class="submit-text">Submit</span>
                        </button>
                    </div>
                </form>

            </div>
        </div>
    </div>
@endsection

@push('scripts')
    <script>
        $(function () {
            const $form = $('#regularizationForm');
            const $type = $('#type');
            const $regularizationFields = $('#regularization-fields');
            const $workingDaysTable = $('#working-days-table');
            const $alertBox = $('#alertContainer');
            const $btn = $('#btnSubmit');
            const $submitText = $btn.find('.submit-text');
            const $permissionFields = $('.permission-only-field');

            $('.select2').select2({
                allowClear: true,
                width: '100%'
            });

            function formatDate(date) {
                const year = date.getFullYear();
                const month = String(date.getMonth() + 1).padStart(2, '0');
                const day = String(date.getDate()).padStart(2, '0');
                return `${year}-${month}-${day}`;
            }

            function getDateLimits() {
                const today = new Date();
                today.setHours(0, 0, 0, 0);

                let workingDaysCount = 0;
                let currentDate = new Date(today);
                let minDate = null;

                while (workingDaysCount < 4) {
                    currentDate.setDate(currentDate.getDate() - 1);
                    const dayOfWeek = currentDate.getDay();

                    if (dayOfWeek !== 5 && dayOfWeek !== 6) {
                        workingDaysCount++;
                        minDate = new Date(currentDate);
                    }
                }

                return {
                    min: formatDate(minDate),
                    max: formatDate(today)
                };
            }

            function showEmptyWorkingDaysMessage(message = null) {
                $workingDaysTable.html(`
                    <div class="empty-regularization-box">
                        <div class="empty-regularization-box__icon">
                            <iconify-icon icon="mdi:calendar-clock-outline"></iconify-icon>
                        </div>
                        <div>
                            <div class="empty-regularization-box__title">${message ? 'No working days found' : 'No working days generated yet'}</div>
                            <div class="empty-regularization-box__text">
                                ${message ? message : 'Select both <strong>Date From</strong> and <strong>Date To</strong> to generate the working days table.'}
                            </div>
                        </div>
                    </div>
                `);
            }

            function toggleTypeFields() {
                const typeValue = $type.val();

                if (typeValue === 'regularizations') {
                    $regularizationFields.stop(true, true).slideDown(200);
                    $permissionFields.hide();
                } else {
                    $regularizationFields.stop(true, true).slideUp(200);
                    $permissionFields.show();
                    showEmptyWorkingDaysMessage();
                    $('#date_from, #date_to').val('');
                }
            }

            function generateWorkingDays(from, to) {
                const startDate = new Date(from);
                const endDate = new Date(to);

                if (startDate > endDate) {
                    showEmptyWorkingDaysMessage('Date To must be greater than or equal to Date From.');
                    return;
                }

                let current = new Date(startDate);
                let rows = '';

                while (current <= endDate) {
                    const day = current.getDay();

                    if (day !== 5 && day !== 6) {
                        const dateStr = current.toISOString().split('T')[0];

                        rows += `
                            <tr>
                                <td>
                                    <input type="date" name="dates[]" class="asset-input" value="${dateStr}" readonly>
                                </td>
                                <td>
                                    <input type="time" name="check_in[]" class="asset-input">
                                </td>
                                <td>
                                    <input type="time" name="check_out[]" class="asset-input">
                                </td>
                                <td>
                                    <select name="reason_bulk[]" class="asset-select">
                                        <option value="Forgot to check-in">Forgot to check-in</option>
                                        <option value="Forgot to check-out">Forgot to check-out</option>
                                        <option value="System issue">System issue</option>
                                        <option value="internet issue">Internet issue</option>
                                    </select>
                                </td>
                            </tr>
                        `;
                    }

                    current.setDate(current.getDate() + 1);
                }

                if (rows) {
                    $workingDaysTable.html(`
                        <div class="regularization-table-wrap">
                            <div class="table-responsive">
                                <table class="table align-middle">
                                    <thead>
                                        <tr>
                                            <th>Date</th>
                                            <th>Check In</th>
                                            <th>Check Out</th>
                                            <th>Reason</th>
                                        </tr>
                                    </thead>
                                    <tbody>
                                        ${rows}
                                    </tbody>
                                </table>
                            </div>
                        </div>
                    `);
                } else {
                    showEmptyWorkingDaysMessage('No working days exist in the selected range.');
                }
            }

            const dateLimits = getDateLimits();
            $('#date_from, #date_to')
                .attr('min', dateLimits.min)
                .attr('max', dateLimits.max);

            $('#date_from, #date_to').on('change', function () {
                const from = $('#date_from').val();
                const to = $('#date_to').val();

                if (from && to) {
                    generateWorkingDays(from, to);
                } else {
                    showEmptyWorkingDaysMessage();
                }
            });

            $type.on('change', toggleTypeFields);
            toggleTypeFields();

            $form.on('submit', function (e) {
                e.preventDefault();

                $alertBox.html('');

                $.ajax({
                    url: "{{ route('regularizations_permissions.store') }}",
                    type: "POST",
                    data: $form.serialize(),
                    beforeSend: function () {
                        $btn.prop('disabled', true);
                        $submitText.html('Saving...');
                    },
                    success: function (response) {
                        $btn.prop('disabled', false);
                        $submitText.html('Submit');

                        if (response.success && response.redirect) {
                            window.location.href = response.redirect;
                            return;
                        }

                        $alertBox.html(`
                            <div class="alert alert-success">Record saved successfully.</div>
                        `);

                        $form.trigger('reset');
                        $('.select2').val(null).trigger('change');
                        showEmptyWorkingDaysMessage();
                        toggleTypeFields();
                    },
                    error: function (xhr) {
                        $btn.prop('disabled', false);
                        $submitText.html('Submit');

                        if (xhr.status === 422) {
                            const errors = xhr.responseJSON.errors;
                            let errorList = '<ul class="mb-0">';

                            $.each(errors, function (key, val) {
                                errorList += `<li>${val[0]}</li>`;
                            });

                            errorList += '</ul>';

                            $alertBox.html(`
                                <div class="alert alert-danger">${errorList}</div>
                            `);
                        } else {
                            $alertBox.html(`
                                <div class="alert alert-danger">An unexpected error occurred.</div>
                            `);
                        }
                    }
                });
            });
        });
    </script>
@endpush