@extends('layouts.app')

@section('title', 'Homework')

@push('styles')
<style>
    .modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 60; display: flex; align-items: center; justify-content: center; padding: 24px; }
    .modal-content { background: var(--card-bg); border-radius: var(--radius); width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto; }
    .modal-header { padding: 20px 24px; border-bottom: 1px solid var(--card-border); display: flex; align-items: center; justify-content: space-between; }
    .modal-body { padding: 24px; }
    .modal-footer { padding: 16px 24px; border-top: 1px solid var(--card-border); display: flex; justify-content: flex-end; gap: 8px; }
    .form-label { display: block; font-size: 13px; font-weight: 500; color: var(--text-primary); margin-bottom: 4px; }
    .form-input { width: 100%; padding: 8px 12px; border: 1px solid var(--card-border); border-radius: 6px; font-size: 14px; outline: none; transition: border-color 0.15s; background: var(--card-bg); color: var(--text-primary); }
    .form-input:focus { border-color: var(--primary-light); }
    .form-select { width: 100%; padding: 8px 12px; border: 1px solid var(--card-border); border-radius: 6px; font-size: 14px; outline: none; transition: border-color 0.15s; background: var(--card-bg); color: var(--text-primary); }
    .form-select:focus { border-color: var(--primary-light); }
    .form-textarea { width: 100%; padding: 8px 12px; border: 1px solid var(--card-border); border-radius: 6px; font-size: 14px; outline: none; transition: border-color 0.15s; background: var(--card-bg); color: var(--text-primary); resize: vertical; min-height: 80px; }
    .form-textarea:focus { border-color: var(--primary-light); }
    .btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 6px; font-size: 14px; font-weight: 500; border: none; cursor: pointer; transition: all 0.15s; text-decoration: none; }
    .btn-primary { background: var(--primary); color: white; }
    .btn-primary:hover { background: var(--primary-dark); }
    .btn-outline { background: transparent; border: 1px solid var(--card-border); color: var(--text-primary); }
    .btn-outline:hover { background: #F5F3F1; }
    .btn-danger { background: var(--danger); color: white; }
    .btn-danger:hover { background: #B91C1C; }
    .btn-sm { padding: 4px 10px; font-size: 13px; }
    .hw-card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius); padding: 20px; transition: box-shadow 0.2s; }
    .hw-card:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
    [x-cloak] { display: none !important; }
    .pagination .page-link, .pagination .page-item.disabled span {
        padding: 6px 12px; border: 1px solid #E8E4E0; border-radius: 6px; font-size: 13px; color: #1C1917; background: white; margin: 0 2px;
    }
    .pagination .page-item.active .page-link { background: #8B5E3C; color: white; border-color: #8B5E3C; }
    .pagination .page-item.disabled span { opacity: 0.5; cursor: not-allowed; }
</style>
@endpush

@section('content')

@php
    $hwJson = $homework->map(function ($h) {
        return ['id' => $h->id, 'subject' => $h->subject, 'description' => $h->description, 'due_date' => $h->due_date ? \Carbon\Carbon::parse($h->due_date)->format('Y-m-d') : '', 'status' => $h->status];
    });
@endphp

<div x-data="{
    addOpen: false,
    editOpen: false,
    editId: null,
    editSubject: '',
    editDescription: '',
    editDueDate: '',
    editStatus: 'pending',
    delModal: false,
    delId: null,
    openDelete(id) { delId = id; delModal = true; },
    closeDelete() { delModal = false; delId = null; },
    items: {{ $hwJson }},
    openEdit(id) {
        this.editId = id;
        const h = this.items.find(i => i.id === id) || {};
        this.editSubject = h.subject;
        this.editDescription = h.description;
        this.editDueDate = h.due_date;
        this.editStatus = h.status;
        this.editOpen = true;
    }
}">
    <div style="display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px;">
        <div>
            <h1 style="font-family: 'Fraunces', serif; font-size: 24px; font-weight: 600;">Homework tracker</h1>
        </div>
        <button @click="addOpen = true" class="btn btn-primary">
            <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="12" y1="5" x2="12" y2="19"/><line x1="5" y1="12" x2="19" y2="12"/></svg>
            Assign Homework
        </button>
    </div>

    <div class="flex flex-wrap items-center gap-3 mb-6">
        <form method="GET" action="{{ url()->current() }}" class="flex gap-2">
            <select name="batch" onchange="this.form.submit()" class="px-3 py-2 border border-gray-200 rounded-lg text-sm">
                <option value="all">All Batches</option>
                @foreach($batches as $b)
                    <option value="{{ $b->id }}" {{ $batchFilter == $b->id ? 'selected' : '' }}>{{ $b->name }}</option>
                @endforeach
            </select>
        </form>
        @if(request('batch') !== 'all' && request('batch'))
            <a href="{{ url()->current() }}" class="text-sm text-[var(--primary)] hover:underline">Clear</a>
        @endif
    </div>

    <div style="display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px;">
        @forelse ($homework as $hw)
            <div class="hw-card">
                <div style="display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 10px;">
                    <div style="font-size: 16px; font-weight: 600;">{{ $hw->subject }}</div>
                    <span style="display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 11px; font-weight: 600; background: #F5F3F1; color: var(--primary);">{{ $hw->batch->name ?? '' }}</span>
                </div>
                <p style="font-size: 13px; color: var(--text-muted); margin-bottom: 12px; line-height: 1.5;">{{ $hw->description }}</p>
                <div style="display: flex; align-items: center; gap: 16px; font-size: 12px; color: var(--text-muted); margin-bottom: 12px;">
                    <span>Assigned: {{ $hw->assigned_date ? \Carbon\Carbon::parse($hw->assigned_date)->format('d M Y') : '—' }}</span>
                    <span>Due: {{ $hw->due_date ? \Carbon\Carbon::parse($hw->due_date)->format('d M Y') : '—' }}</span>
                </div>
                <div style="display: flex; align-items: center; justify-content: space-between;">
                    <span style="display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 12px; font-weight: 500;
                        @if($hw->status == 'pending') background: #FEF3C7; color: #D97706;
                        @elseif($hw->status == 'submitted') background: #DBEAFE; color: #2563EB;
                        @else background: #D1FAE5; color: #059669;
                        @endif">{{ $hw->status }}</span>
                    <div style="display: flex; gap: 6px;">
                        <button @click="openEdit({{ $hw->id }})" class="btn btn-outline btn-sm">Edit</button>
                        <button @click="openDelete({{ $hw->id }})" class="btn btn-danger btn-sm">
                            <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="3 6 5 6 21 6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/></svg>
                        </button>
                    </div>
                </div>
            </div>
        @empty
            <div style="grid-column: 1 / -1; padding: 48px; text-align: center; color: var(--text-muted); background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius);">
                No homework assigned yet.
            </div>
        @endforelse
    </div>

    @if(method_exists($homework, 'links'))
    <div class="mt-6">
        {{ $homework->appends(request()->query())->links() }}
    </div>
    @endif

    <div x-show="addOpen" x-cloak class="modal-overlay" x-on:click.self="addOpen = false" x-transition>
        <div class="modal-content">
            <div class="modal-header">
                <h3 style="font-size: 16px; font-weight: 600;">Assign homework</h3>
                <button @click="addOpen = false" style="background: none; border: none; cursor: pointer; color: var(--text-muted); padding: 4px;">
                    <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/></svg>
                </button>
            </div>
            <form method="POST" action="{{ route('homework.store') }}">
                @csrf
                <div class="modal-body">
                    <div style="display: grid; gap: 16px;">
                        <div>
                            <label class="form-label">Batch</label>
                            <select name="batch_id" class="form-select" required>
                                <option value="">Select batch</option>
                                @foreach($batches as $b)
                                    <option value="{{ $b->id }}">{{ $b->name }}</option>
                                @endforeach
                            </select>
                        </div>
                        <div>
                            <label class="form-label">Subject</label>
                            <input type="text" name="subject" required class="form-input" placeholder="e.g. Mathematics">
                        </div>
                        <div>
                            <label class="form-label">Description</label>
                            <textarea name="description" required class="form-textarea" placeholder="Homework details..."></textarea>
                        </div>
                        <div>
                            <label class="form-label">Due date</label>
                            <input type="date" name="due_date" class="form-input">
                        </div>
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" @click="addOpen = false" class="btn btn-outline">Cancel</button>
                    <button type="submit" class="btn btn-primary">Assign</button>
                </div>
            </form>
        </div>
    </div>

    <div x-show="editOpen" x-cloak class="modal-overlay" x-on:click.self="editOpen = false" x-transition>
        <div class="modal-content">
            <div class="modal-header">
                <h3 style="font-size: 16px; font-weight: 600;">Edit homework</h3>
                <button @click="editOpen = false" style="background: none; border: none; cursor: pointer; color: var(--text-muted); padding: 4px;">
                    <svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/></svg>
                </button>
            </div>
            <form method="POST" x-bind:action="'/homework/' + editId">
                @csrf @method('PUT')
                <div class="modal-body">
                    <div style="display: grid; gap: 16px;">
                        <div>
                            <label class="form-label">Subject</label>
                            <input type="text" name="subject" required class="form-input" x-model="editSubject">
                        </div>
                        <div>
                            <label class="form-label">Description</label>
                            <textarea name="description" required class="form-textarea" x-model="editDescription"></textarea>
                        </div>
                        <div>
                            <label class="form-label">Due date</label>
                            <input type="date" name="due_date" class="form-input" x-model="editDueDate">
                        </div>
                        <div>
                            <label class="form-label">Status</label>
                            <select name="status" class="form-select" x-model="editStatus">
                                <option value="pending">Pending</option>
                                <option value="submitted">Submitted</option>
                                <option value="reviewed">Reviewed</option>
                            </select>
                        </div>
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" @click="editOpen = false" class="btn btn-outline">Cancel</button>
                    <button type="submit" class="btn btn-primary">Save</button>
                </div>
            </form>
        </div>
    </div>

    <div x-show="delModal" x-cloak class="fixed inset-0 z-50 flex items-center justify-center">
        <div class="fixed inset-0 bg-black/50" @click="closeDelete()"></div>
        <div class="relative bg-white rounded-xl shadow-xl p-6 w-full max-w-sm mx-4">
            <h3 class="text-lg font-semibold mb-2">Confirm Delete</h3>
            <p class="text-gray-600 text-sm mb-6">Are you sure? This cannot be undone.</p>
            <div class="flex justify-end gap-3">
                <button @click="closeDelete()" class="px-4 py-2 text-sm text-gray-600 border border-gray-200 rounded-lg hover:bg-gray-50">Cancel</button>
                <form method="POST" x-bind:action="'/homework/' + delId" style="display:inline">
                    @csrf @method('DELETE')
                    <button type="submit" class="px-4 py-2 text-sm text-white bg-red-600 rounded-lg hover:bg-red-700">Delete</button>
                </form>
            </div>
        </div>
    </div>
</div>

@endsection

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