@extends('layouts.app')

@section('title', 'Security & Audit Trail')

@section('content')
<div class="space-y-6">
    <!-- Header -->
    <div class="flex items-center justify-between">
        <div>
            <h1 class="text-2xl font-bold text-slate-800">Security & Clinical Audit Trail</h1>
            <p class="text-sm text-slate-500">Immutable ledger of clinical access, medical record mutations, financial transactions & authentication</p>
        </div>
        <div class="flex items-center space-x-2 text-xs text-slate-500 bg-white px-3 py-1.5 rounded-lg border border-slate-200">
            <i class="fa-solid fa-lock text-emerald-600"></i>
            <span>Tamper-evident logs enabled</span>
        </div>
    </div>

    <!-- Filter Form -->
    <div class="bg-white rounded-xl shadow-sm border border-slate-200 p-4">
        <form action="{{ route('audit.index') }}" method="GET" class="grid grid-cols-1 sm:grid-cols-4 gap-3">
            <div>
                <label class="block text-[11px] font-bold text-slate-600 uppercase mb-1">Module</label>
                <select name="module" class="w-full px-3 py-1.5 bg-slate-50 border border-slate-300 rounded text-xs">
                    <option value="">All Modules</option>
                    @foreach($modules as $mod)
                        <option value="{{ $mod }}" {{ request('module') === $mod ? 'selected' : '' }}>
                            {{ ucfirst($mod) }}
                        </option>
                    @endforeach
                </select>
            </div>

            <div>
                <label class="block text-[11px] font-bold text-slate-600 uppercase mb-1">User / Operator</label>
                <select name="user_id" class="w-full px-3 py-1.5 bg-slate-50 border border-slate-300 rounded text-xs">
                    <option value="">All Users</option>
                    @foreach($users as $u)
                        <option value="{{ $u->id }}" {{ request('user_id') == $u->id ? 'selected' : '' }}>
                            {{ $u->name }} ({{ $u->role }})
                        </option>
                    @endforeach
                </select>
            </div>

            <div>
                <label class="block text-[11px] font-bold text-slate-600 uppercase mb-1">Action Keyword</label>
                <input type="text" name="search" value="{{ request('search') }}" placeholder="Search action..." class="w-full px-3 py-1.5 bg-slate-50 border border-slate-300 rounded text-xs">
            </div>

            <div class="flex items-end space-x-2">
                <button type="submit" class="w-full py-1.5 bg-hospital-600 hover:bg-hospital-700 text-white rounded text-xs font-semibold shadow-xs">
                    Filter Logs
                </button>
                <a href="{{ route('audit.index') }}" class="px-3 py-1.5 bg-slate-100 hover:bg-slate-200 text-slate-700 rounded text-xs font-semibold border border-slate-300">
                    Reset
                </a>
            </div>
        </form>
    </div>

    <!-- Audit Logs Table -->
    <div class="bg-white rounded-xl shadow-sm border border-slate-200 overflow-hidden">
        <div class="overflow-x-auto">
            <table class="w-full text-left text-xs">
                <thead class="bg-slate-100 text-slate-600 uppercase font-semibold border-b border-slate-200">
                    <tr>
                        <th class="px-4 py-3">Timestamp</th>
                        <th class="px-4 py-3">User & Role</th>
                        <th class="px-4 py-3">Module</th>
                        <th class="px-4 py-3">Action Executed</th>
                        <th class="px-4 py-3">IP Address</th>
                        <th class="px-4 py-3 text-center">Changes</th>
                    </tr>
                </thead>
                <tbody class="divide-y divide-slate-100">
                    @forelse($logs as $log)
                        <tr class="hover:bg-slate-50 transition" x-data="{ openDetail: false }">
                            <td class="px-4 py-3 font-mono text-slate-500 whitespace-nowrap">
                                {{ $log->created_at->format('d/m/Y h:i:s A') }}
                            </td>
                            <td class="px-4 py-3">
                                <div class="font-bold text-slate-900">{{ $log->user->name ?? 'System' }}</div>
                                <div class="text-[10px] text-slate-400 capitalize">{{ $log->user->role ?? 'automated' }}</div>
                            </td>
                            <td class="px-4 py-3">
                                <span class="px-2 py-0.5 rounded text-[10px] font-bold uppercase bg-slate-100 text-slate-700 border border-slate-200">
                                    {{ $log->module }}
                                </span>
                            </td>
                            <td class="px-4 py-3 font-medium text-slate-800">
                                {{ $log->action }}
                                @if($log->record_id)
                                    <span class="text-slate-400 font-mono text-[10px]">#{{ $log->record_id }}</span>
                                @endif
                            </td>
                            <td class="px-4 py-3 font-mono text-slate-500">
                                {{ $log->ip_address ?? '127.0.0.1' }}
                            </td>
                            <td class="px-4 py-3 text-center">
                                @if(!empty($log->old_values) || !empty($log->new_values))
                                    <button type="button" @click="openDetail = !openDetail" class="px-2 py-0.5 rounded bg-sky-50 text-sky-700 hover:bg-sky-100 font-semibold text-[10px] border border-sky-200">
                                        <i class="fa-solid fa-code-compare mr-1"></i> Diff
                                    </button>
                                    <!-- Inline modal/drawer for values diff -->
                                    <div x-show="openDetail" class="fixed inset-0 z-50 flex items-center justify-center p-4 bg-slate-900/60" x-cloak>
                                        <div class="bg-white rounded-xl shadow-xl border border-slate-200 w-full max-w-xl p-5 text-left" @click.outside="openDetail = false">
                                            <div class="flex items-center justify-between pb-3 border-b border-slate-200">
                                                <h4 class="font-bold text-sm text-slate-900">Audit Record Diff #{{ $log->id }}</h4>
                                                <button type="button" @click="openDetail = false" class="text-slate-400 hover:text-slate-600">
                                                    <i class="fa-solid fa-xmark"></i>
                                                </button>
                                            </div>
                                            <div class="grid grid-cols-2 gap-4 mt-3 text-xs">
                                                <div>
                                                    <div class="font-bold text-slate-600 mb-1">Old Values</div>
                                                    <pre class="bg-slate-50 p-2 rounded border border-slate-200 overflow-x-auto text-[10px] font-mono">{{ json_encode($log->old_values, JSON_PRETTY_PRINT) }}</pre>
                                                </div>
                                                <div>
                                                    <div class="font-bold text-slate-600 mb-1">New Values</div>
                                                    <pre class="bg-slate-50 p-2 rounded border border-slate-200 overflow-x-auto text-[10px] font-mono">{{ json_encode($log->new_values, JSON_PRETTY_PRINT) }}</pre>
                                                </div>
                                            </div>
                                        </div>
                                    </div>
                                @else
                                    <span class="text-slate-300">—</span>
                                @endif
                            </td>
                        </tr>
                    @empty
                        <tr>
                            <td colspan="6" class="py-12 text-center text-slate-400">
                                <i class="fa-solid fa-shield-halved text-3xl mb-2 text-slate-300"></i>
                                <p class="font-medium text-sm">No audit logs matching query criteria.</p>
                            </td>
                        </tr>
                    @endforelse
                </tbody>
            </table>
        </div>

        @if($logs->hasPages())
            <div class="px-4 py-3 border-t border-slate-200 bg-slate-50">
                {{ $logs->links() }}
            </div>
        @endif
    </div>
</div>
@endsection