1029 lines
39 KiB
PHP
1029 lines
39 KiB
PHP
<?php
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namespace App\Http\Controllers;
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use App\Models\Interview;
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use App\Models\InterviewWarning;
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use App\Models\User;
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use Illuminate\Http\Request;
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use Illuminate\Support\Facades\Auth;
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use Illuminate\Support\Facades\Http;
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use Illuminate\Support\Facades\Storage;
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use Illuminate\Support\Str;
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class InterviewController extends Controller
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{
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/**
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* Display the HR & Interviewer Live Assessment Portal.
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*/
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public function index()
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{
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$user = Auth::user();
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// Check if user is Admin, HR, or has active assigned interview zone timeline
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if (!$user->isAdmin() && strtolower($user->role) !== 'hr' && !$user->hasActiveInterviewZone()) {
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return redirect()->route('dashboard')->with('error', 'Interview Zone is available only during active interview timelines assigned by HR or Admin.');
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}
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$interviews = $user->getAccessibleInterviews();
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$interviewers = User::orderBy('name', 'asc')->get();
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return view('interview.index', compact('interviews', 'interviewers'));
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}
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/**
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* Store a new Candidate Interview session created by HR.
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*/
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public function store(Request $request)
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{
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$request->validate([
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'candidate_name' => 'required|string|max:255',
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'candidate_email' => 'required|email|max:255',
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'candidate_phone' => 'required|string|max:50',
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'scheduled_at' => 'nullable|date',
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'valid_hours' => 'required|integer|min:1|max:72',
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'language' => 'required|string',
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'assigned_interviewers' => 'nullable|array',
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]);
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$tempPassword = 'Pass-' . rand(100000, 999999);
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$cleanPhone = preg_replace('/[^0-9]/', '', $request->candidate_phone);
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$cleanName = Str::slug($request->candidate_name);
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$submissionUniqueId = $cleanName . '_' . $cleanPhone . '_' . time();
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$scheduledAt = $request->scheduled_at ? \Carbon\Carbon::parse($request->scheduled_at) : now();
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$expiresAt = $scheduledAt->copy()->addHours((int)$request->valid_hours);
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$interview = Interview::create([
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'candidate_name' => $request->candidate_name,
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'candidate_email' => strtolower(trim($request->candidate_email)),
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'candidate_phone' => $request->candidate_phone,
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'temp_password' => $tempPassword,
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'scheduled_at' => $scheduledAt,
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'expires_at' => $expiresAt,
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'language' => $request->language,
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'status' => 'scheduled',
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'assigned_interviewers' => $request->assigned_interviewers ?? [],
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'proctor_logs' => [],
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'submission_unique_id' => $submissionUniqueId,
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'created_by' => Auth::id(),
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]);
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return redirect()->route('interview.index')->with('success', 'Interview session created for ' . $request->candidate_name . '. Temporary login credentials generated!');
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}
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/**
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* Show Candidate Login Screen.
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*/
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public function showCandidateLogin()
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{
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return view('interview.candidate_login');
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}
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/**
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* Handle Candidate Temporary Credentials Authentication.
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*/
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public function loginCandidate(Request $request)
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{
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$request->validate([
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'identifier' => 'required|string', // Email or Phone
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'temp_password' => 'required|string',
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]);
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$identifier = trim($request->identifier);
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$interview = Interview::where(function ($q) use ($identifier) {
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$q->where('candidate_email', strtolower($identifier))
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->orWhere('candidate_phone', $identifier)
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->orWhere('submission_unique_id', $identifier);
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})->where('temp_password', $request->temp_password)->first();
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if (!$interview) {
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return back()->with('error', 'Invalid candidate credentials or temporary password.');
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}
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if ($interview->status === 'blocked' || $interview->blocked_ip === $request->ip()) {
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return back()->with('error', 'Access Denied: Candidate email and IP address have been blocked by HR/Interviewer.');
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}
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if ($interview->isExpired()) {
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$interview->update(['status' => 'expired']);
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return back()->with('error', 'This candidate interview access window has expired. Please contact HR.');
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}
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// Set candidate session
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session(['candidate_interview_id' => $interview->id]);
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if ($interview->status === 'scheduled') {
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$interview->update(['status' => 'in_progress']);
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}
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return redirect()->route('interview.room', $interview->submission_unique_id);
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}
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/**
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* Show Candidate Live IDE Proctored Room.
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*/
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public function showCandidateRoom($uniqueId)
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{
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$interview = Interview::where('submission_unique_id', $uniqueId)->firstOrFail();
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if ($interview->status === 'blocked') {
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return response()->view('interview.expired', compact('interview'), 403);
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}
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if ($interview->isExpired()) {
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$interview->update(['status' => 'expired']);
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return response()->view('interview.expired', compact('interview'), 403);
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}
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return view('interview.candidate_room', compact('interview'));
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}
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/**
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* Proxy Live Code Execution to Piston Multi-Language API.
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*/
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public function executeCode(Request $request)
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{
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$request->validate([
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'language' => 'required|string',
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'code' => 'required|string',
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'interview_id' => 'nullable|string',
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]);
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$langKey = strtolower(trim($request->language));
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$code = $request->code;
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$output = '';
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// 1. Ultra-Fast Piston Code Execution API (sub-second for C, C++, Java, JS, Python, PHP, Go, Rust)
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$pistonLangMap = [
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'python' => 'python',
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'py' => 'python',
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'javascript' => 'javascript',
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'js' => 'javascript',
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'c' => 'c',
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'cpp' => 'c++',
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'c++' => 'c++',
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'java' => 'java',
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'php' => 'php',
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'laravel' => 'php',
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'go' => 'go',
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'rust' => 'rust',
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];
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if (isset($pistonLangMap[$langKey])) {
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try {
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$pistonLang = $pistonLangMap[$langKey];
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$response = Http::timeout(4)->post('https://emkc.org/api/v2/piston/execute', [
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'language' => $pistonLang,
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'version' => '*',
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'files' => [
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['content' => $code]
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]
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]);
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if ($response->successful()) {
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$resData = $response->json();
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$output = $resData['run']['output'] ?? ($resData['run']['stdout'] ?? '');
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if (empty($output) && !empty($resData['run']['stderr'])) {
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$output = $resData['run']['stderr'];
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}
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}
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} catch (\Exception $e) {}
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}
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// 2. Instant Local Process Runner Fallback
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if (empty($output)) {
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try {
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if (in_array($langKey, ['javascript', 'js'])) {
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$process = new \Symfony\Component\Process\Process(['node', '-e', $code]);
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$process->setTimeout(3);
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$process->run();
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$out = $process->getOutput() ?: $process->getErrorOutput();
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$output = trim($out) ?: 'JavaScript executed successfully (no stdout).';
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} elseif ($langKey === 'python') {
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$process = new \Symfony\Component\Process\Process(['python', '-c', $code]);
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$process->setTimeout(3);
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$process->run();
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$out = $process->getOutput() ?: $process->getErrorOutput();
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$output = trim($out) ?: 'Python executed successfully (no stdout).';
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} elseif (in_array($langKey, ['php', 'laravel'])) {
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ob_start();
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try {
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$cleanCode = preg_replace('/^\s*<\?php\s*/i', '', $code);
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eval($cleanCode);
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$out = ob_get_clean();
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$output = trim($out) ?: 'PHP code executed successfully.';
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} catch (\Throwable $e) {
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ob_end_clean();
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$output = 'PHP Evaluation Error: ' . $e->getMessage();
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}
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}
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} catch (\Exception $e) {}
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}
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if (empty($output)) {
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$output = "=== Code Execution Status ===\nSolution executed.\nLanguage: " . strtoupper($langKey);
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}
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// Auto-persist candidate code + execution output directly to interview model
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$interviewId = $request->input('interview_id');
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if ($interviewId) {
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$interview = Interview::where('id', $interviewId)->orWhere('submission_unique_id', $interviewId)->first();
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if ($interview) {
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$interview->update([
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'submitted_code' => $code,
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'submitted_language' => $langKey,
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'code_output' => $output,
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]);
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}
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}
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return response()->json(['success' => true, 'output' => $output]);
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}
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/**
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* Save Candidate Submitted Code & Execution Results.
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*/
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public function submitCode(Request $request, $id)
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{
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$interview = Interview::findOrFail($id);
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$request->validate([
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'code' => 'required|string',
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'language' => 'required|string',
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'output' => 'nullable|string',
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]);
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$interview->update([
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'submitted_code' => $request->code,
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'submitted_language' => $request->language,
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'code_output' => $request->output,
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'status' => 'completed',
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]);
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return response()->json([
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'success' => true,
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'message' => 'Code submitted successfully under unique ID: ' . $interview->submission_unique_id,
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'unique_id' => $interview->submission_unique_id
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]);
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}
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/**
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* Log Anti-Cheat Proctoring Violations (Tab Switch, Focus Loss, Gaze Anomaly).
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*/
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public function logViolation(Request $request, $id)
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{
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$interview = Interview::findOrFail($id);
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$type = $request->input('type'); // tab_switch, focus_lost, paste_event, gaze_anomaly, question_repetition, external_ai_detected
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$details = $request->input('details', '');
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// Automatically run AI Speech/Transcript Inspection if violation is speech/question repetition/phone call
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$aiVerdict = null;
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if (in_array($type, ['question_repetition', 'question_repeat_lower', 'talking_secondary_person', 'talking_on_phone', 'reading_external_device'])) {
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$aiDetector = new \App\Services\AiCheatingDetectorService();
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$aiVerdict = $aiDetector->analyzeSpeechTranscript($details, $interview->candidate_notes ?? '');
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}
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$logs = $interview->proctor_logs ?? [];
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$logs[] = [
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'type' => $type,
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'details' => $details,
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'ai_verdict' => $aiVerdict,
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'timestamp' => now()->toIso8601String(),
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];
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$interview->update(['proctor_logs' => $logs]);
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return response()->json(['success' => true, 'total_violations' => count($logs), 'ai_verdict' => $aiVerdict]);
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}
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/**
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* Interviewer / HR sends a Silent Warning to Candidate.
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*/
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public function sendWarning(Request $request, $id)
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{
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$interview = Interview::findOrFail($id);
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$request->validate([
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'message' => 'required|string|max:500',
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]);
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$warning = InterviewWarning::create([
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'interview_id' => $interview->id,
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'message' => $request->message,
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'sent_by' => Auth::id(),
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]);
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return response()->json(['success' => true, 'warning' => $warning]);
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}
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/**
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* Send Real-Time Chat Message from Candidate to Interviewer/HR.
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*/
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public function candidateSendMessage(Request $request, $id)
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{
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$interview = Interview::findOrFail($id);
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$request->validate(['message' => 'required|string|max:500']);
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$warning = InterviewWarning::create([
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'interview_id' => $interview->id,
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'message' => $request->message,
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'sent_by' => null, // null sent_by indicates candidate sender
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]);
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return response()->json(['success' => true, 'warning' => $warning]);
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}
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/**
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* Live Sync Candidate Code (before submission).
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*/
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public function syncCandidateCode(Request $request, $id)
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{
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$interview = Interview::findOrFail($id);
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$updateData = [
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'submitted_code' => $request->input('code'),
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'submitted_language' => $request->input('language', $interview->language),
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];
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if ($request->has('output')) {
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$updateData['code_output'] = $request->input('output');
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}
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$interview->update($updateData);
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return response()->json(['success' => true]);
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}
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/**
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* Save Candidate Live Notepad Content.
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*/
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public function saveCandidateNotes(Request $request, $id)
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{
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$interview = Interview::findOrFail($id);
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$interview->update(['candidate_notes' => $request->input('notes')]);
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return response()->json(['success' => true]);
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}
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/**
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* Save Candidate Live Canvas Drawing Data URL.
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*/
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public function saveCandidateDrawing(Request $request, $id)
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{
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$interview = Interview::findOrFail($id);
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$interview->update(['candidate_drawing' => $request->input('drawing')]);
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return response()->json(['success' => true]);
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}
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/**
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* Regenerate Temporary Candidate Password (by Interviewer/HR).
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*/
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public function regeneratePassword($id)
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{
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$interview = Interview::findOrFail($id);
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$newPass = 'Pass-' . rand(100000, 999999);
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$interview->update(['temp_password' => $newPass]);
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return response()->json(['success' => true, 'new_password' => $newPass]);
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}
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/**
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* Block Candidate Session, Email & Client IP (by Interviewer/HR).
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*/
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public function blockCandidate(Request $request, $id)
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{
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$interview = Interview::findOrFail($id);
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$clientIp = $request->ip();
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$interview->update([
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'status' => 'blocked',
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'blocked_ip' => $clientIp,
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]);
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// Also block user record if exists
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User::where('email', strtolower($interview->candidate_email))
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->update(['is_blocked' => true]);
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return response()->json([
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'success' => true,
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'message' => 'Candidate ' . $interview->candidate_name . ' (' . $interview->candidate_email . ') and IP ' . $clientIp . ' have been blocked successfully.'
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]);
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}
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/**
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* Serve Storage File (Recordings & Public Assets) directly with Range Support for Video Streaming.
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*/
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public function serveStorageFile($path)
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{
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$sanitizedPath = ltrim(str_replace('..', '', $path), '/');
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$candidatePaths = [
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storage_path('app/public/' . $sanitizedPath),
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storage_path('app/private/public/' . $sanitizedPath),
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storage_path('app/private/' . $sanitizedPath),
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storage_path('app/' . $sanitizedPath),
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public_path('storage/' . $sanitizedPath),
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public_path($sanitizedPath),
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];
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// Also check with alternate extensions (.webm / .mp4) if requested file extension differs
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$baseNoExt = preg_replace('/\.(mp4|webm|m4v|mov)$/i', '', $sanitizedPath);
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if ($baseNoExt !== $sanitizedPath) {
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$candidatePaths[] = storage_path('app/public/' . $baseNoExt . '.webm');
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$candidatePaths[] = storage_path('app/public/' . $baseNoExt . '.mp4');
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$candidatePaths[] = storage_path('app/private/public/' . $baseNoExt . '.webm');
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$candidatePaths[] = storage_path('app/private/public/' . $baseNoExt . '.mp4');
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$candidatePaths[] = public_path($baseNoExt . '.webm');
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$candidatePaths[] = public_path($baseNoExt . '.mp4');
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}
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$filePath = null;
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foreach ($candidatePaths as $cp) {
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if (file_exists($cp) && is_file($cp)) {
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$filePath = $cp;
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break;
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}
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}
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if (!$filePath) {
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abort(404, 'Storage file not found.');
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}
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// Read first 12 bytes to accurately detect container format (WebM vs MP4 vs Image)
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$handle = @fopen($filePath, 'rb');
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$header = $handle ? fread($handle, 12) : '';
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if ($handle) fclose($handle);
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$extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
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$isWebmHeader = str_starts_with($header, "\x1A\x45\xDF\xA3");
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if ($isWebmHeader || $extension === 'webm') {
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$mimeType = 'video/webm';
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} elseif (str_contains($header, 'ftyp') || in_array($extension, ['mp4', 'm4v'])) {
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$mimeType = 'video/mp4';
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} elseif ($extension === 'png') {
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$mimeType = 'image/png';
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} elseif (in_array($extension, ['jpg', 'jpeg'])) {
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$mimeType = 'image/jpeg';
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} else {
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$mimeType = @mime_content_type($filePath) ?: 'application/octet-stream';
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}
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$fileSize = filesize($filePath);
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$headers = [
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'Content-Type' => $mimeType,
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'Accept-Ranges' => 'bytes',
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'Cache-Control' => 'public, max-age=86400',
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];
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// Enable HTTP 206 Partial Content Range support required for HTML5 video playback/seeking
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$range = request()->header('Range');
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if ($range && preg_match('/bytes=(\d+)-(\d+)?/', $range, $matches)) {
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$start = (int) $matches[1];
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$end = isset($matches[2]) && $matches[2] !== '' ? (int) $matches[2] : ($fileSize - 1);
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if ($start > $end || $start >= $fileSize) {
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return response('', 416, ['Content-Range' => "bytes */{$fileSize}"]);
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}
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$end = min($end, $fileSize - 1);
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$length = $end - $start + 1;
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$headers['Content-Range'] = "bytes {$start}-{$end}/{$fileSize}";
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$headers['Content-Length'] = (string) $length;
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return response()->stream(function () use ($filePath, $start, $length) {
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$file = fopen($filePath, 'rb');
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if ($file) {
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fseek($file, $start);
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$bufferSize = 1024 * 64;
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$bytesLeft = $length;
|
|
while ($bytesLeft > 0 && !feof($file)) {
|
|
$readSize = min($bufferSize, $bytesLeft);
|
|
$data = fread($file, $readSize);
|
|
if ($data === false) break;
|
|
echo $data;
|
|
flush();
|
|
$bytesLeft -= strlen($data);
|
|
}
|
|
fclose($file);
|
|
}
|
|
}, 206, $headers);
|
|
}
|
|
|
|
$headers['Content-Length'] = (string) $fileSize;
|
|
return response()->file($filePath, $headers);
|
|
}
|
|
|
|
/**
|
|
* Get normalized recordings list sorted in descending order of creation timestamp (newest first).
|
|
*/
|
|
private function getFormattedRecordings($interview)
|
|
{
|
|
$rawRecordings = $interview->recordings ?? [];
|
|
if (!is_array($rawRecordings) || empty($rawRecordings)) {
|
|
if (!empty($interview->recording_path)) {
|
|
$rawRecordings = [[
|
|
'url' => $interview->recording_path,
|
|
'filename' => basename($interview->recording_path),
|
|
'created_at' => $interview->updated_at ? $interview->updated_at->toIso8601String() : now()->toIso8601String(),
|
|
]];
|
|
} else {
|
|
$rawRecordings = [];
|
|
}
|
|
}
|
|
|
|
$formatted = [];
|
|
foreach ($rawRecordings as $idx => $rec) {
|
|
if (is_string($rec)) {
|
|
$rec = [
|
|
'url' => $rec,
|
|
'filename' => basename($rec),
|
|
'created_at' => $interview->updated_at ? $interview->updated_at->toIso8601String() : now()->toIso8601String(),
|
|
];
|
|
}
|
|
$url = $rec['url'] ?? '';
|
|
$urlPath = parse_url($url, PHP_URL_PATH) ?? $url;
|
|
$cleanPath = ltrim(str_replace(['/storage/', 'storage/'], '', $urlPath), '/');
|
|
$streamUrl = url('/media-stream/' . $cleanPath);
|
|
|
|
$ext = strtolower(pathinfo($cleanPath, PATHINFO_EXTENSION));
|
|
$mimeType = in_array($ext, ['mp4', 'm4v']) ? 'video/mp4' : 'video/webm';
|
|
|
|
$rec['original_index'] = $idx;
|
|
$rec['stream_url'] = $streamUrl;
|
|
$rec['download_url'] = route('interview.download-recording', $interview->id) . '?index=' . $idx;
|
|
$rec['mime_type'] = $mimeType;
|
|
$formatted[] = $rec;
|
|
}
|
|
|
|
// Sort descending by created_at timestamp (newest first)
|
|
usort($formatted, function ($a, $b) {
|
|
$timeA = isset($a['created_at']) ? strtotime($a['created_at']) : 0;
|
|
$timeB = isset($b['created_at']) ? strtotime($b['created_at']) : 0;
|
|
return $timeB <=> $timeA;
|
|
});
|
|
|
|
return $formatted;
|
|
}
|
|
|
|
/**
|
|
* Live Polling Endpoint for Candidate Warnings & HR Monitoring.
|
|
/**
|
|
* Get all currently active interview calls accessible to the logged-in user.
|
|
*/
|
|
public function getActiveCalls(Request $request)
|
|
{
|
|
$user = Auth::user();
|
|
if (!$user) {
|
|
return response()->json(['active_calls' => [], 'current_user_id' => null]);
|
|
}
|
|
|
|
$accessible = $user->getAccessibleInterviews();
|
|
$activeCalls = [];
|
|
|
|
foreach ($accessible as $interview) {
|
|
// Auto-terminate call session if interview timeline has expired
|
|
if ($interview->isExpired()) {
|
|
if ($interview->call_status === 'active') {
|
|
$interview->update(['call_status' => 'ended']);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if ($interview->call_status === 'active') {
|
|
$starterName = 'Panelist';
|
|
if ($interview->call_started_by) {
|
|
$starter = User::find($interview->call_started_by);
|
|
if ($starter) {
|
|
$starterName = $starter->name;
|
|
}
|
|
}
|
|
|
|
$activeCalls[] = [
|
|
'id' => $interview->id,
|
|
'candidate_name' => $interview->candidate_name,
|
|
'candidate_email' => $interview->candidate_email,
|
|
'submission_unique_id' => $interview->submission_unique_id,
|
|
'call_status' => $interview->call_status,
|
|
'call_started_by' => $interview->call_started_by,
|
|
'starter_name' => $starterName,
|
|
'call_started_at' => $interview->call_started_at ? $interview->call_started_at->toIso8601String() : null,
|
|
];
|
|
}
|
|
}
|
|
|
|
return response()->json([
|
|
'active_calls' => $activeCalls,
|
|
'current_user_id' => $user->id,
|
|
]);
|
|
}
|
|
|
|
/**
|
|
* Live Polling Endpoint for Candidate Warnings & HR Monitoring.
|
|
*/
|
|
public function getPollData($id)
|
|
{
|
|
$interview = Interview::with(['warnings.sender', 'callStarter'])
|
|
->where('id', $id)
|
|
->orWhere('submission_unique_id', $id)
|
|
->firstOrFail();
|
|
|
|
// Enforce expiration: ended call status if timeline is expired
|
|
if ($interview->isExpired()) {
|
|
if ($interview->call_status === 'active') {
|
|
$interview->update(['call_status' => 'ended']);
|
|
}
|
|
}
|
|
|
|
$formattedRecordings = $this->getFormattedRecordings($interview);
|
|
|
|
$starterName = $interview->callStarter ? $interview->callStarter->name : null;
|
|
|
|
$globalScreenshotsEnabled = \App\Models\Setting::get('enable_candidate_screenshots', '1') === '1';
|
|
$interviewScreenshotsEnabled = (bool) ($interview->enable_tab_switch_screenshot ?? true);
|
|
$effectiveScreenshotEnabled = $globalScreenshotsEnabled && $interviewScreenshotsEnabled;
|
|
|
|
return response()->json([
|
|
'status' => $interview->status,
|
|
'call_status' => $interview->isExpired() ? 'ended' : ($interview->call_status ?? 'idle'),
|
|
'call_started_by' => $interview->call_started_by,
|
|
'starter_name' => $starterName,
|
|
'call_started_at' => $interview->call_started_at ? $interview->call_started_at->toIso8601String() : null,
|
|
'enable_tab_switch_screenshot' => $effectiveScreenshotEnabled,
|
|
'global_screenshot_enabled' => $globalScreenshotsEnabled,
|
|
'tab_switch_screenshots' => $interview->tab_switch_screenshots ?? [],
|
|
'submitted_code' => $interview->submitted_code,
|
|
'submitted_language' => $interview->submitted_language,
|
|
'code_output' => $interview->code_output,
|
|
'candidate_notes' => $interview->candidate_notes,
|
|
'candidate_drawing' => $interview->candidate_drawing,
|
|
'temp_password' => $interview->temp_password,
|
|
'blocked_ip' => $interview->blocked_ip,
|
|
'proctor_logs' => $interview->proctor_logs ?? [],
|
|
'recording_path' => $interview->recording_path,
|
|
'recordings' => $formattedRecordings,
|
|
'warnings' => $interview->warnings,
|
|
'is_expired' => $interview->isExpired(),
|
|
]);
|
|
}
|
|
|
|
/**
|
|
* Update Interview Call Session Status (active, idle, ended).
|
|
*/
|
|
public function updateCallStatus(Request $request, $id)
|
|
{
|
|
$interview = Interview::where('id', $id)
|
|
->orWhere('submission_unique_id', $id)
|
|
->firstOrFail();
|
|
$status = $request->input('call_status', 'idle');
|
|
$isRejoin = $request->boolean('is_rejoin', false);
|
|
|
|
$updateData = ['call_status' => $status];
|
|
$isNewCall = false;
|
|
|
|
if ($status === 'active') {
|
|
if (!$isRejoin && ($interview->call_status !== 'active' || !$interview->call_started_at)) {
|
|
$updateData['call_started_by'] = Auth::id();
|
|
$updateData['call_started_at'] = now();
|
|
$isNewCall = true;
|
|
}
|
|
} elseif (in_array($status, ['ended', 'idle'])) {
|
|
$updateData['call_started_by'] = null;
|
|
$updateData['call_started_at'] = null;
|
|
}
|
|
|
|
$interview->update($updateData);
|
|
|
|
$starterName = Auth::user() ? Auth::user()->name : 'Panelist';
|
|
|
|
return response()->json([
|
|
'success' => true,
|
|
'call_status' => $status,
|
|
'is_new_call' => $isNewCall,
|
|
'call_started_by' => $interview->call_started_by,
|
|
'starter_name' => $starterName,
|
|
'call_started_at' => $interview->call_started_at ? $interview->call_started_at->toIso8601String() : null,
|
|
]);
|
|
}
|
|
|
|
/**
|
|
* Upload & Save Candidate System Screen Screenshot under public/uploads/candidate_screenshots/{unique_id}/.
|
|
*/
|
|
public function uploadTabScreenshot(Request $request, $id)
|
|
{
|
|
$interview = Interview::where('id', $id)
|
|
->orWhere('submission_unique_id', $id)
|
|
->firstOrFail();
|
|
|
|
$globalEnabled = \App\Models\Setting::get('enable_candidate_screenshots', '1') === '1';
|
|
$interviewEnabled = !isset($interview->enable_tab_switch_screenshot) || $interview->enable_tab_switch_screenshot;
|
|
|
|
if (!$globalEnabled || !$interviewEnabled) {
|
|
return response()->json([
|
|
'success' => false,
|
|
'message' => 'Candidate system screenshot capture is disabled by admin setting.'
|
|
]);
|
|
}
|
|
|
|
$reason = $request->input('reason', 'tab_switch'); // 'call_start' or 'tab_switch'
|
|
$filename = 'screenshot_' . $reason . '_' . time() . '_' . rand(100, 999) . '.jpg';
|
|
$uniqueFolder = $interview->submission_unique_id ?: $interview->id;
|
|
$subDir = 'uploads/candidate_screenshots/' . $uniqueFolder;
|
|
$destinationPath = public_path($subDir);
|
|
|
|
if (!file_exists($destinationPath)) {
|
|
mkdir($destinationPath, 0777, true);
|
|
}
|
|
|
|
$url = null;
|
|
if ($request->hasFile('screenshot')) {
|
|
$file = $request->file('screenshot');
|
|
$file->move($destinationPath, $filename);
|
|
$url = asset($subDir . '/' . $filename);
|
|
} elseif ($request->input('image')) {
|
|
$base64Image = $request->input('image');
|
|
if (str_contains($base64Image, ',')) {
|
|
$base64Image = explode(',', $base64Image)[1];
|
|
}
|
|
$base64Image = str_replace(' ', '+', $base64Image);
|
|
$imageData = base64_decode($base64Image);
|
|
if ($imageData !== false && strlen($imageData) > 0) {
|
|
file_put_contents($destinationPath . '/' . $filename, $imageData);
|
|
$url = asset($subDir . '/' . $filename);
|
|
}
|
|
}
|
|
|
|
if ($url) {
|
|
$relativePath = '/' . $subDir . '/' . $filename;
|
|
$fullFilePath = $destinationPath . '/' . $filename;
|
|
|
|
// Automatically analyze candidate system screen capture using AI Vision Engine
|
|
$aiDetector = new \App\Services\AiCheatingDetectorService();
|
|
$aiVerdict = $aiDetector->analyzeScreenshot($fullFilePath);
|
|
|
|
$screenshotEntry = [
|
|
'url' => $relativePath,
|
|
'full_url' => $url,
|
|
'filename' => $filename,
|
|
'ai_verdict' => $aiVerdict,
|
|
'timestamp' => now()->toIso8601String(),
|
|
'reason' => $reason,
|
|
];
|
|
|
|
$screenshots = $interview->tab_switch_screenshots ?? [];
|
|
$screenshots[] = $screenshotEntry;
|
|
|
|
$hasAiTool = !empty($aiVerdict['is_cheating']) && !empty($aiVerdict['ai_tool_detected']);
|
|
|
|
if ($reason === 'call_start') {
|
|
$logType = 'call_start_screenshot';
|
|
$logMsg = '📸 CALL STARTED SYSTEM SNAPSHOT: System screen snapshot captured automatically when call started.';
|
|
} elseif ($hasAiTool) {
|
|
$logType = 'external_ai_detected';
|
|
$toolName = $aiVerdict['ai_tool_detected'];
|
|
$logMsg = "🤖 candidate might use external ai ({$toolName}): " . $aiVerdict['summary'];
|
|
} else {
|
|
$logType = 'tab_switch';
|
|
$logMsg = '📸 Candidate switched browser tab or window: System screen screenshot captured for interviewer & admin review.';
|
|
}
|
|
|
|
$logs = $interview->proctor_logs ?? [];
|
|
$logs[] = [
|
|
'type' => $logType,
|
|
'details' => $logMsg,
|
|
'ai_verdict' => $aiVerdict,
|
|
'screenshot_url' => $relativePath,
|
|
'timestamp' => now()->toIso8601String(),
|
|
];
|
|
|
|
$interview->update([
|
|
'tab_switch_screenshots' => $screenshots,
|
|
'proctor_logs' => $logs,
|
|
]);
|
|
|
|
return response()->json([
|
|
'success' => true,
|
|
'url' => $relativePath,
|
|
'full_url' => $url,
|
|
'ai_verdict' => $aiVerdict,
|
|
'total_screenshots' => count($screenshots),
|
|
]);
|
|
}
|
|
|
|
return response()->json(['success' => false, 'message' => 'No image payload received']);
|
|
}
|
|
|
|
/**
|
|
* Admin Toggle Enable/Disable Candidate Tab Switch Screenshot Capture.
|
|
*/
|
|
public function toggleTabScreenshot(Request $request, $id)
|
|
{
|
|
$interview = Interview::where('id', $id)
|
|
->orWhere('submission_unique_id', $id)
|
|
->firstOrFail();
|
|
|
|
$enable = $request->boolean('enable', true);
|
|
$interview->update(['enable_tab_switch_screenshot' => $enable]);
|
|
|
|
return response()->json([
|
|
'success' => true,
|
|
'enable_tab_switch_screenshot' => $enable,
|
|
'message' => $enable ? 'Tab-switch screenshot capture ENABLED.' : 'Tab-switch screenshot capture DISABLED.'
|
|
]);
|
|
}
|
|
|
|
/**
|
|
* Save Candidate Video Recording under public/uploads/candidate_recordings/{unique_id}/.
|
|
*/
|
|
public function uploadRecording(Request $request, $id)
|
|
{
|
|
$interview = Interview::where('id', $id)
|
|
->orWhere('submission_unique_id', $id)
|
|
->firstOrFail();
|
|
|
|
if ($request->hasFile('video')) {
|
|
$file = $request->file('video');
|
|
$ext = strtolower($file->getClientOriginalExtension() ?: 'webm');
|
|
if (!in_array($ext, ['mp4', 'webm', 'm4v', 'mov'])) {
|
|
$ext = 'webm';
|
|
}
|
|
|
|
$uniqueFolder = $interview->submission_unique_id ?: $interview->id;
|
|
$subDir = 'uploads/candidate_recordings/' . $uniqueFolder;
|
|
$destinationPath = public_path($subDir);
|
|
if (!file_exists($destinationPath)) {
|
|
mkdir($destinationPath, 0777, true);
|
|
}
|
|
|
|
$filename = 'recording_' . time() . '.' . $ext;
|
|
$file->move($destinationPath, $filename);
|
|
$url = asset($subDir . '/' . $filename);
|
|
$relativePath = '/' . $subDir . '/' . $filename;
|
|
|
|
$recordings = $interview->recordings ?? [];
|
|
if (!is_array($recordings)) {
|
|
$recordings = $interview->recording_path ? [$interview->recording_path] : [];
|
|
}
|
|
$recordings[] = [
|
|
'url' => $relativePath,
|
|
'full_url' => $url,
|
|
'filename' => $filename,
|
|
'created_at' => now()->toIso8601String(),
|
|
];
|
|
|
|
$interview->update([
|
|
'recording_path' => $relativePath,
|
|
'recordings' => $recordings,
|
|
]);
|
|
|
|
return response()->json(['success' => true, 'path' => $relativePath, 'url' => $url, 'recordings' => $recordings]);
|
|
}
|
|
|
|
return response()->json(['success' => false, 'message' => 'No video payload received']);
|
|
}
|
|
|
|
/**
|
|
* Download Candidate Video Recording as File.
|
|
*/
|
|
public function downloadRecording(Request $request, $id)
|
|
{
|
|
$interview = Interview::findOrFail($id);
|
|
$index = (int) $request->input('index', 0);
|
|
$recordings = $interview->recordings ?? [];
|
|
|
|
$targetUrl = null;
|
|
if (!empty($recordings) && isset($recordings[$index])) {
|
|
$rec = $recordings[$index];
|
|
$targetUrl = is_array($rec) ? ($rec['url'] ?? null) : $rec;
|
|
}
|
|
|
|
if (!$targetUrl) {
|
|
$targetUrl = $interview->recording_path;
|
|
}
|
|
|
|
if (!$targetUrl) {
|
|
return back()->with('error', 'No video recording found for this candidate profile.');
|
|
}
|
|
|
|
$urlPath = parse_url($targetUrl, PHP_URL_PATH) ?? $targetUrl;
|
|
$sanitizedPath = ltrim(str_replace(['/storage/', 'storage/'], '', $urlPath), '/');
|
|
|
|
$candidatePaths = [
|
|
storage_path('app/public/' . $sanitizedPath),
|
|
storage_path('app/private/public/' . $sanitizedPath),
|
|
storage_path('app/private/' . $sanitizedPath),
|
|
storage_path('app/' . $sanitizedPath),
|
|
public_path('storage/' . $sanitizedPath),
|
|
public_path($sanitizedPath),
|
|
];
|
|
|
|
$baseNoExt = preg_replace('/\.(mp4|webm|m4v|mov)$/i', '', $sanitizedPath);
|
|
if ($baseNoExt !== $sanitizedPath) {
|
|
$candidatePaths[] = storage_path('app/public/' . $baseNoExt . '.webm');
|
|
$candidatePaths[] = storage_path('app/public/' . $baseNoExt . '.mp4');
|
|
$candidatePaths[] = storage_path('app/private/public/' . $baseNoExt . '.webm');
|
|
$candidatePaths[] = storage_path('app/private/public/' . $baseNoExt . '.mp4');
|
|
}
|
|
|
|
$filePath = null;
|
|
foreach ($candidatePaths as $cp) {
|
|
if (file_exists($cp) && is_file($cp)) {
|
|
$filePath = $cp;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ($filePath && file_exists($filePath)) {
|
|
$handle = @fopen($filePath, 'rb');
|
|
$header = $handle ? fread($handle, 12) : '';
|
|
if ($handle) fclose($handle);
|
|
|
|
$isWebm = str_starts_with($header, "\x1A\x45\xDF\xA3") || str_ends_with($filePath, '.webm');
|
|
$ext = $isWebm ? 'webm' : 'mp4';
|
|
$mimeType = $isWebm ? 'video/webm' : 'video/mp4';
|
|
|
|
$downloadFilename = 'candidate_' . Str::slug($interview->candidate_name) . '_recording_' . ($index + 1) . '.' . $ext;
|
|
return response()->download($filePath, $downloadFilename, [
|
|
'Content-Type' => $mimeType,
|
|
]);
|
|
}
|
|
|
|
return redirect($targetUrl);
|
|
}
|
|
|
|
/**
|
|
* Generate Comprehensive Executive Candidate Evaluation & Behavioral Report (PDF View).
|
|
*/
|
|
public function generateReport($id)
|
|
{
|
|
$interview = Interview::with(['warnings.sender'])->findOrFail($id);
|
|
|
|
$logs = is_array($interview->proctor_logs) ? $interview->proctor_logs : [];
|
|
$tabSwitches = 0;
|
|
$focusLosses = 0;
|
|
$gazeAnomalies = 0;
|
|
$pasteEvents = 0;
|
|
$lowerGazeViolations = 0;
|
|
$questionRepeatViolations = 0;
|
|
|
|
foreach ($logs as $l) {
|
|
$type = $l['type'] ?? '';
|
|
if ($type === 'tab_switch') $tabSwitches++;
|
|
if ($type === 'focus_lost') $focusLosses++;
|
|
if (in_array($type, ['gaze_anomaly', 'gaze_fixed_staring'])) $gazeAnomalies++;
|
|
if ($type === 'paste_event') $pasteEvents++;
|
|
if ($type === 'gaze_lower_device') $lowerGazeViolations++;
|
|
if (in_array($type, ['question_repeat_lower', 'question_repetition'])) $questionRepeatViolations++;
|
|
}
|
|
|
|
$totalViolations = count($logs);
|
|
|
|
// Calculate Integrity Score %
|
|
if ($totalViolations === 0) {
|
|
$integrityScore = 100;
|
|
$integrityLabel = 'Exceptional Integrity';
|
|
$integrityColor = '#10b981';
|
|
} elseif ($totalViolations <= 2 && $lowerGazeViolations === 0 && $questionRepeatViolations === 0) {
|
|
$integrityScore = 85;
|
|
$integrityLabel = 'Low Behavioral Risk';
|
|
$integrityColor = '#06b6d4';
|
|
} elseif ($totalViolations <= 5) {
|
|
$integrityScore = 60;
|
|
$integrityLabel = 'Moderate Integrity Concern';
|
|
$integrityColor = '#f59e0b';
|
|
} else {
|
|
$integrityScore = 25;
|
|
$integrityLabel = 'High Malpractice Risk';
|
|
$integrityColor = '#ef4444';
|
|
}
|
|
|
|
// Technical Code Score
|
|
$codeScore = 0;
|
|
if (!empty($interview->submitted_code)) {
|
|
$codeScore += 50;
|
|
if (!empty($interview->code_output) && !str_contains(strtolower($interview->code_output), 'error')) {
|
|
$codeScore += 40;
|
|
} else {
|
|
$codeScore += 20;
|
|
}
|
|
if (!empty($interview->candidate_notes) || !empty($interview->candidate_drawing)) {
|
|
$codeScore += 10;
|
|
}
|
|
}
|
|
$interview->formatted_recordings = $this->getFormattedRecordings($interview);
|
|
|
|
return view('interview.report', compact(
|
|
'interview',
|
|
'logs',
|
|
'tabSwitches',
|
|
'focusLosses',
|
|
'gazeAnomalies',
|
|
'pasteEvents',
|
|
'lowerGazeViolations',
|
|
'questionRepeatViolations',
|
|
'integrityScore',
|
|
'integrityLabel',
|
|
'integrityColor',
|
|
'codeScore'
|
|
));
|
|
}
|
|
}
|