@extends('layouts.school')
@section('title', 'Upload Preview')
@section('header', 'Upload Preview')

@section('content')
    <div class="mb-6 rounded-xl bg-white p-6 shadow-sm ring-1 ring-gray-900/5">
        <div class="flex flex-wrap items-center justify-between gap-3">
            <div>
                <h2 class="text-lg font-semibold text-gray-900">{{ $class->name }} — {{ $subject->name }}</h2>
                <p class="text-sm text-gray-500">
                    {{ $term->name }} · {{ $assessmentType->name }}
                    (max {{ $assessmentType->max_score }} · weight {{ $assessmentType->weight }}%)
                </p>
                <p class="mt-1 text-xs text-gray-500">
                    {{ $toUpdate }} row(s) to update · {{ $toSkip }} blank row(s) skipped ·
                    {{ $existingCount }} existing score(s) will be overwritten
                </p>
            </div>
            <div class="flex items-center gap-2">
                <a href="{{ route('school.results.upload', $schoolId) }}" class="rounded-lg border border-gray-300 px-4 py-2 text-sm font-medium text-gray-700 hover:bg-gray-50">← Change file</a>
                @if ($toUpdate > 0 && empty($parseErrors))
                    <form method="POST" action="{{ route('school.results.import', $schoolId) }}">
                        @csrf
                        <input type="checkbox" name="confirmed" value="1" checked class="hidden">
                        <button type="submit" class="rounded-lg bg-green-600 px-4 py-2 text-sm font-semibold text-white shadow-sm hover:bg-green-700">
                            ✅ Confirm &amp; Import {{ $toUpdate }} Scores
                        </button>
                    </form>
                @endif
            </div>
        </div>
    </div>

    @if (!empty($parseErrors))
        <div class="mb-6 rounded-xl bg-red-50 p-6 ring-1 ring-red-100">
            <h3 class="text-sm font-semibold text-red-900">Errors Found ({{ count($parseErrors) }}) — File Not Imported</h3>
            <p class="mt-1 text-xs text-red-700">Fix the errors below, re-download the template if needed, and upload again.</p>
            <ul class="mt-3 max-h-60 list-disc space-y-1 overflow-y-auto pl-5 text-sm text-red-700">
                @foreach ($parseErrors as $error)
                    <li>{{ $error }}</li>
                @endforeach
            </ul>
        </div>
    @endif

    <div class="rounded-xl bg-white shadow-sm ring-1 ring-gray-900/5 overflow-hidden">
        <div class="border-b border-gray-200 px-6 py-4">
            <h3 class="text-sm font-semibold text-gray-900">Parsed Rows</h3>
        </div>
        <div class="max-h-[32rem] overflow-y-auto">
            <table class="min-w-full divide-y divide-gray-200">
                <thead class="bg-gray-50 sticky top-0">
                    <tr>
                        <th class="px-6 py-3 text-left text-xs font-semibold text-gray-500 uppercase">Student</th>
                        <th class="px-6 py-3 text-left text-xs font-semibold text-gray-500 uppercase">Admission No</th>
                        <th class="px-6 py-3 text-left text-xs font-semibold text-gray-500 uppercase">Score</th>
                        <th class="px-6 py-3 text-left text-xs font-semibold text-gray-500 uppercase">Status</th>
                    </tr>
                </thead>
                <tbody class="divide-y divide-gray-100">
                    @forelse($preview as $row)
                        <tr class="{{ $row['status'] === 'skip' ? 'bg-gray-50/50' : 'hover:bg-gray-50' }}">
                            <td class="px-6 py-3 text-sm font-medium text-gray-900">
                                {{ $row['student']->first_name }} {{ $row['student']->last_name }}
                            </td>
                            <td class="px-6 py-3 text-sm text-gray-600">{{ $row['student']->admission_no ?? '—' }}</td>
                            <td class="px-6 py-3 text-sm {{ $row['score'] === null ? 'text-gray-400' : 'text-gray-900' }}">
                                @if ($row['score'] === null)
                                    —
                                @else
                                    {{ rtrim(rtrim(number_format($row['score'], 2), '0'), '.') }} / {{ $assessmentType->max_score }}
                                @endif
                            </td>
                            <td class="px-6 py-3">
                                @if ($row['status'] === 'skip')
                                    <span class="inline-flex rounded-full bg-gray-100 px-2.5 py-0.5 text-xs font-medium text-gray-600">Skipped (blank)</span>
                                @else
                                    <span class="inline-flex rounded-full bg-green-50 px-2.5 py-0.5 text-xs font-medium text-green-700">Will be saved</span>
                                @endif
                            </td>
                        </tr>
                    @empty
                        <tr><td colspan="4" class="px-6 py-12 text-center text-sm text-gray-500">No rows found in the uploaded file.</td></tr>
                    @endforelse
                </tbody>
            </table>
        </div>
    </div>
@endsection