<?php
// ============================================================
// social_worker.php
// Endpoint for the Android Social Media Bot
// ============================================================

require_once __DIR__ . '/../../core/bootstrap.php';
require_once __DIR__ . '/../../functions.php';

// Authentication and validation could be added here similar to driver_socket.php
// For now, let's keep it simple or use a static token for the bot
$headers = getallheaders();
$botToken = $headers['X-Bot-Token'] ?? '';
if ($botToken !== 'YOUR_SECRET_BOT_TOKEN') {
    // In production, use a secure token or JWT
    // http_response_code(401);
    // exit(json_encode(['status' => 'error', 'message' => 'Unauthorized']));
}

$action = $_GET['action'] ?? '';

try {
    $con = Database::get('main');
    
    switch ($action) {
        case 'get_task':
            // The bot asks for a task to do
            $platform = $_GET['platform'] ?? 'facebook';
            
            // Find a pending task that is scheduled for now or earlier
            $stmt = $con->prepare("
                SELECT id, type, target_url, prompt_context, generated_comment 
                FROM social_tasks 
                WHERE status = 'pending' AND platform = ? AND (scheduled_at IS NULL OR scheduled_at <= NOW())
                ORDER BY created_at ASC LIMIT 1
            ");
            $stmt->execute([$platform]);
            $task = $stmt->fetch(PDO::FETCH_ASSOC);
            
            if ($task) {
                // Mark as in progress
                $update = $con->prepare("UPDATE social_tasks SET status = 'in_progress' WHERE id = ?");
                $update->execute([$task['id']]);
                
                echo json_encode(['status' => 'success', 'data' => $task]);
            } else {
                echo json_encode(['status' => 'success', 'message' => 'No tasks available', 'data' => null]);
            }
            break;
            
        case 'complete_task':
            // The bot reports task completion
            $taskId = $_POST['task_id'] ?? null;
            $result = $_POST['result'] ?? ''; // e.g. success or error details
            
            if ($taskId) {
                $stmt = $con->prepare("UPDATE social_tasks SET status = 'completed', completed_at = NOW() WHERE id = ?");
                $stmt->execute([$taskId]);
                
                // Log it
                $log = $con->prepare("INSERT INTO social_logs (task_id, log_level, message) VALUES (?, 'info', ?)");
                $log->execute([$taskId, "Task completed: " . substr($result, 0, 200)]);
                
                echo json_encode(['status' => 'success']);
            } else {
                echo json_encode(['status' => 'error', 'message' => 'task_id required']);
            }
            break;
            
        case 'fail_task':
            // The bot reports task failure
            $taskId = $_POST['task_id'] ?? null;
            $errorMsg = $_POST['error_message'] ?? 'Unknown error';
            
            if ($taskId) {
                $stmt = $con->prepare("UPDATE social_tasks SET status = 'failed', error_message = ? WHERE id = ?");
                $stmt->execute([$errorMsg, $taskId]);
                
                // Log it
                $log = $con->prepare("INSERT INTO social_logs (task_id, log_level, message) VALUES (?, 'error', ?)");
                $log->execute([$taskId, "Task failed: " . substr($errorMsg, 0, 200)]);
                
                echo json_encode(['status' => 'success']);
            } else {
                echo json_encode(['status' => 'error', 'message' => 'task_id required']);
            }
            break;
            
        case 'log':
            // The bot sends a general log
            $accountId = $_POST['account_id'] ?? null;
            $level = $_POST['level'] ?? 'info';
            $message = $_POST['message'] ?? '';
            
            $log = $con->prepare("INSERT INTO social_logs (account_id, log_level, message) VALUES (?, ?, ?)");
            $log->execute([$accountId, $level, $message]);
            
            echo json_encode(['status' => 'success']);
            break;
            
        default:
            echo json_encode(['status' => 'error', 'message' => 'Invalid action']);
    }

} catch (Exception $e) {
    http_response_code(500);
    echo json_encode(['status' => 'error', 'message' => 'Database error: ' . $e->getMessage()]);
}