<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Models\AuditLog;
use App\Models\User;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\View\View;
use Symfony\Component\HttpFoundation\StreamedResponse;

class AuditLogController extends Controller
{
    public function index(Request $request): View
    {
        $logs = AuditLog::with(['actor', 'targetUser'])
            ->when($request->action, fn ($q, $a) => $q->where('action', $a))
            ->when($request->actor_id, fn ($q, $id) => $q->where('actor_user_id', $id))
            ->when($request->target_id, fn ($q, $id) => $q->where('target_user_id', $id))
            ->when($request->date_from, fn ($q, $d) => $q->whereDate('created_at', '>=', $d))
            ->when($request->date_to, fn ($q, $d) => $q->whereDate('created_at', '<=', $d))
            ->when($request->search, fn ($q, $s) =>
                $q->where('action', 'like', "%{$s}%")
                  ->orWhere('justification', 'like', "%{$s}%")
                  ->orWhere('ip_address', 'like', "%{$s}%")
            )
            ->orderByDesc('created_at')
            ->paginate(30)
            ->withQueryString();

        $actions = AuditLog::select('action')->distinct()->pluck('action')->sort()->values();
        $admins  = User::where('role', 'admin')->orderBy('name')->get(['id', 'name']);

        return view('admin.audit-logs.index', compact('logs', 'actions', 'admins'));
    }

    public function export(Request $request): StreamedResponse
    {
        $query = AuditLog::with(['actor', 'targetUser'])
            ->when($request->action, fn ($q, $a) => $q->where('action', $a))
            ->when($request->actor_id, fn ($q, $id) => $q->where('actor_user_id', $id))
            ->when($request->target_id, fn ($q, $id) => $q->where('target_user_id', $id))
            ->when($request->date_from, fn ($q, $d) => $q->whereDate('created_at', '>=', $d))
            ->when($request->date_to, fn ($q, $d) => $q->whereDate('created_at', '<=', $d))
            ->when($request->search, fn ($q, $s) =>
                $q->where('action', 'like', "%{$s}%")
                  ->orWhere('justification', 'like', "%{$s}%")
                  ->orWhere('ip_address', 'like', "%{$s}%")
            )
            ->orderByDesc('created_at');

        $filename = 'audit-log-' . now()->format('Ymd-His') . '.csv';

        return response()->streamDownload(function () use ($query) {
            $handle = fopen('php://output', 'w');

            // UTF-8 BOM untuk Excel
            fwrite($handle, "\xEF\xBB\xBF");

            fputcsv($handle, [
                'Masa', 'Oleh', 'Peranan', 'Tindakan',
                'Sasaran', 'Projek ID', 'IP', 'Justifikasi',
            ]);

            $query->chunk(500, function ($logs) use ($handle) {
                foreach ($logs as $log) {
                    fputcsv($handle, [
                        $log->created_at?->format('d/m/Y H:i:s'),
                        $log->actor?->name ?? 'Sistem',
                        $log->actor_role ?? '',
                        $log->action,
                        $log->targetUser?->name ?? ($log->subject_type
                            ? class_basename($log->subject_type) . '#' . $log->subject_id
                            : ''),
                        $log->project_id ?? '',
                        $log->ip_address ?? '',
                        $log->justification ?? '',
                    ]);
                }
            });

            fclose($handle);
        }, $filename, [
            'Content-Type'        => 'text/csv; charset=UTF-8',
            'Content-Disposition' => "attachment; filename=\"{$filename}\"",
        ]);
    }
}