<?php
require_once __DIR__ . '/db/config.php';

// Set a longer execution time, as this can be a long-running script.
ini_set('max_execution_time', 300); // 5 minutes

// --- Helper Functions ---

/**
 * Updates the status of a submission.
 */
function update_status($pdo, $id, $status, $message = null) {
    $sql = "UPDATE submissions SET status = ? WHERE id = ?";
    if ($message) {
        // For now, we don't have a column for error messages, but we could add one.
        // For this version, we'll just log it to the server's error log.
        error_log("Submission ID: $id, Status: $status, Message: $message");
    }
    $stmt = $pdo->prepare($sql);
    $stmt->execute([$status, $id]);
}

/**
 * A simple function to extract a domain from a URL.
 */
function get_domain($url) {
    $pieces = parse_url($url);
    if (isset($pieces['host'])) {
        return preg_replace('/^www\./', '', $pieces['host']);
    }
    return null;
}

// --- Main Worker Logic ---

$pdo = db();

// 1. Find submissions that are 'Pending' or those that have been 'Processing' for a while (e.g., > 15 mins)
// This helps recover from script crashes.
$stmt = $pdo->query("SELECT * FROM submissions WHERE status = 'Pending' OR (status = 'Processing' AND updated_at < NOW() - INTERVAL 15 MINUTE)");
$pending_submissions = $stmt->fetchAll();

if (empty($pending_submissions)) {
    // No work to do, just redirect back.
    header('Location: analyst_dashboard.php');
    exit;
}

foreach ($pending_submissions as $sub) {
    $id = $sub['id'];
    $name = $sub['name'];

    // 2. Mark as 'Processing'
    update_status($pdo, $id, 'Processing');

    // 3. Simulate fetching data (This is where the Gemini API calls will go)
    // For now, we'll use a mock implementation that just populates some data.
    try {
        // --- MOCK DATA IMPLEMENTATION ---
        // In a real scenario, you would use a proper web scraping or API service.
        // This is a placeholder to simulate finding profiles.
        $social_profiles = [
            'linkedin_url' => 'https://linkedin.com/in/' . strtolower(str_replace(' ', '', $name)) . rand(1, 99),
            'twitter_url' => 'https://twitter.com/' . strtolower(str_replace(' ', '', $name)),
        ];

        $update_data = array_merge($social_profiles, [
            'company' => 'Mock Company ' . rand(100, 999),
            'location' => 'Mock Location',
            'industry' => 'Mock Industry',
            'geo_location' => 'Mock Geo',
            'status' => 'Completed'
        ]);

        $sql_parts = [];
        foreach ($update_data as $key => $value) {
            $sql_parts[] = "`$key` = :$key";
        }
        $sql = "UPDATE submissions SET " . implode(', ', $sql_parts) . " WHERE id = :id";
        
        $stmt = $pdo->prepare($sql);
        $update_data['id'] = $id;
        $stmt->execute($update_data);

    } catch (Exception $e) {
        // If something goes wrong, mark as 'Error'
        update_status($pdo, $id, 'Error', $e->getMessage());
    }
}

// 4. Redirect back to the dashboard
header('Location: analyst_dashboard.php?refreshed=all');
exit;