@extends('student.layouts.app')

@section('content')
<div class="flex flex-col h-full">
    <!-- Header -->
    <div class="flex items-center justify-between mb-6">
        <div class="flex items-center gap-3">
            <a href="{{ route('student.dashboard', ['slug' => session('student_school_slug')]) }}" class="text-slate-400 hover:text-indigo-600 transition-colors">
                <i class="fa-solid fa-arrow-left text-xl"></i>
            </a>
            <h1 class="text-lg font-extrabold text-slate-800">My Chats</h1>
                        <script>
                function validateDates() {
                    const from = document.getElementById('from_date').value;
                    const to = document.getElementById('to_date').value;
                    if(from && to && to < from) {
                        document.getElementById('to_date').value = '';
                        document.getElementById('date-error-modal').classList.remove('hidden');
                    }
                }

                document.getElementById('chat-filter-form').addEventListener('submit', function(e) {
                    const from = document.getElementById('from_date').value;
                    const to = document.getElementById('to_date').value;
                    if(from && to && to < from) {
                        e.preventDefault();
                        document.getElementById('date-error-modal').classList.remove('hidden');
                    }
                });
            </script>
        </div>
               <div class="flex items-center gap-2">
            <!-- NEW MESSAGES Button -->
           <a href="{{ route('student.chats.list', ['slug' => session('student_school_slug'), 'unread_only' => 1]) }}"
               class="px-3 py-2 rounded-full text-[10px] font-bold flex items-center gap-2 transition-all whitespace-nowrap {{ request('unread_only') == 1 ? 'bg-indigo-600 text-white' : 'bg-indigo-50 text-indigo-600 border border-indigo-200' }}">
                <span class="relative flex h-2 w-2 shrink-0">
                    <span class="animate-ping absolute inline-flex h-full w-full rounded-full bg-indigo-400 opacity-75"></span>
                    <span class="relative inline-flex rounded-full h-2 w-2 bg-indigo-600"></span>
                </span>
                NEW ({{ $totalUnread }})
            </a>

            <button id="new-chat-list-btn" class="bg-indigo-600 text-white px-4 py-2 rounded-full text-xs font-bold shadow-md active:scale-95 transition-all">
                <i class="fa-solid fa-plus mr-1"></i> New Chat
            </button>
        </div>

    </div>

    <!-- PREMIUM FILTER SECTION -->
    <div class="bg-white p-4 rounded-3xl border border-slate-200 shadow-sm mb-6 sticky top-0 z-30">
                <form id="chat-filter-form" action="{{ route('student.chats.list', ['slug' => session('student_school_slug')]) }}" method="GET" class="space-y-3">
            <div class="flex items-center gap-2">
                <div class="flex-1">
                    <label class="text-[10px] font-bold text-slate-400 uppercase ml-1">Quick Filter</label>
                    <select name="filter" class="w-full mt-1 px-3 py-2 bg-slate-50 border border-slate-200 rounded-xl text-xs outline-none focus:border-indigo-500 transition-all">
                        <option value="">All Conversations</option>
                        <option value="week" {{ request('filter') == 'week' ? 'selected' : '' }}>This Week</option>
                    </select>
                </div>
            </div>

            <div class="grid grid-cols-2 gap-3">
                <div>
                    <label class="text-[10px] font-bold text-slate-400 uppercase ml-1">From Date</label>
                                        <input type="date" name="from_date" id="from_date" value="{{ request('from_date') }}" 
                        onchange="validateDates()"
                        class="w-full mt-1 px-3 py-2 bg-slate-50 border border-slate-200 rounded-xl text-xs outline-none focus:border-indigo-500 transition-all">
                </div>
                <div>
                    <label class="text-[10px] font-bold text-slate-400 uppercase ml-1">To Date</label>
                                        <input type="date" name="to_date" id="to_date" value="{{ request('to_date') }}" 
                        onchange="validateDates()"
                        class="w-full mt-1 px-3 py-2 bg-slate-50 border border-slate-200 rounded-xl text-xs outline-none focus:border-indigo-500 transition-all">
                </div>
            </div>

            <button type="submit" class="w-full py-2 bg-slate-800 text-white rounded-xl text-xs font-bold hover:bg-slate-900 transition-all shadow-md">
                Apply Filters
            </button>
        </form>
    </div>

    <!-- CHAT LIST -->
    <div class="space-y-4 pb-24">
               @forelse($chatData as $chat)
             <a href="{{ route('student.chat', ['slug' => session('student_school_slug'), 'id' => $chat['id']]) }}" class="flex items-center gap-4 p-4 bg-white rounded-2xl border border-slate-200 shadow-sm hover:border-indigo-300 hover:bg-indigo-50/30 transition-all active:scale-95 relative">
                <!-- Avatar with Unread Badge -->
                <div class="relative shrink-0">
                    <div class="w-12 h-12 rounded-full bg-indigo-100 text-indigo-600 flex items-center justify-center font-bold border border-indigo-200">
                        S
                    </div>
                    @if($chat['unread_count'] > 0)
                        <div class="absolute -top-1 -right-1 w-5 h-5 bg-red-500 text-white text-[9px] flex items-center justify-center rounded-full border-2 border-white font-bold shadow-sm">
                            {{ $chat['unread_count'] }}
                        </div>
                    @endif
                </div>
                
                <!-- Details -->
                <div class="flex-1 min-w-0">
                    <div class="flex justify-between items-center mb-1">
                        <h4 class="text-sm font-bold {{ $chat['unread_count'] > 0 ? 'text-indigo-600' : 'text-slate-800' }} truncate">School Admin</h4>
                        <span class="text-[9px] text-slate-400 font-medium shrink-0 ml-2">{{ $chat['last_time'] }}</span>
                    </div>
                    <p class="text-xs {{ $chat['unread_count'] > 0 ? 'text-slate-800 font-semibold' : 'text-slate-500' }} truncate leading-tight">
                        {{ Str::limit($chat['last_message'], 60) }}
                    </p>
                </div>
                <div class="text-slate-300 shrink-0">
                    <i class="fa-solid fa-chevron-right text-xs"></i>
                </div>
            </a>
        @empty
            <div class="text-center py-20">
                <div class="w-20 h-20 bg-slate-100 rounded-full flex items-center justify-center mx-auto mb-4">
                    <i class="fa-solid fa-comments-slash text-3xl text-slate-300"></i>
                </div>
                <h3 class="text-slate-800 font-bold text-sm">No Chats Found</h3>
                <p class="text-slate-400 text-xs mt-1">Try changing the date filters</p>
            </div>
        @endforelse
    </div>
</div>

<!-- WORLD CLASS DATE ERROR MODAL -->
<div id="date-error-modal" class="fixed inset-0 z-[100] hidden flex items-center justify-center px-6">
    <div class="absolute inset-0 bg-slate-900/60 backdrop-blur-sm"></div>
    <div class="relative bg-white w-full max-w-xs rounded-3xl shadow-2xl p-8 text-center transform transition-all">
        <div class="w-16 h-16 bg-red-100 text-red-600 rounded-full flex items-center justify-center mx-auto mb-4">
            <i class="fa-solid fa-calendar-xmark text-2xl"></i>
        </div>
        <h3 class="text-lg font-bold text-slate-800 mb-2">Invalid Date!</h3>
        <p class="text-sm text-slate-500 mb-6">The "To Date" cannot be earlier than the "From Date".</p>
        <button onclick="closeDateModal()" class="w-full py-3 bg-slate-800 text-white rounded-xl font-bold hover:bg-slate-900 transition-all">
            Got it
        </button>
    </div>
</div>

<script>
    function closeDateModal() {
        $('#date-error-modal').addClass('hidden');
    }
</script>

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
    $(document).ready(function() {
        // Using 'on' instead of '.click' to ensure it works even if elements load slowly
        $(document).on('click', '#new-chat-list-btn', function(e) {
            e.preventDefault();
            
            // Visual feedback: disable button and show loading
            const btn = $(this);
            const originalText = btn.html();
            btn.prop('disabled', true).html('<i class="fa-solid fa-circle-notch animate-spin mr-1"></i> Loading...');

            $.ajax({
                               url: "/school/{{ session('student_school_slug') }}/student/chat/new",
                method: 'POST',
                data: { 
                    _token: "{{ csrf_token() }}" 
                },
                success: function(res) {
                    if(res.success && res.id) {
                        // Redirect to the specific NEW chat ID
                        window.location.href = "/school/{{ session('student_school_slug') }}/student/chat/" + res.id;
                    } else {
                        alert("Something went wrong. Please try again.");
                        btn.prop('disabled', false).html(originalText);
                    }
                },
                error: function() {
                    alert("Server error. Please try again.");
                    btn.prop('disabled', false).html(originalText);
                }
            });
        });
    });
</script>


@endsection