How to scrape Facebook Marketplace search results
with Swift.

import Foundation

class Scraper {
    private static let API_KEY = "YOUR_API_KEY"
    private static let BASE_URL = "https://api.scrapecreators.com"
    private static let ENDPOINT_PATH = "/v1/facebook/marketplace/location/search"
    
    static func scrape(completion: @escaping (Result<String, Error>) -> Void) {
        // Build query parameters
        var components = URLComponents(string: BASE_URL + ENDPOINT_PATH)!
        components.queryItems = [
            URLQueryItem(name: "query", value: "Austin")
        ]
        
        guard let url = components.url else {
            completion(.failure(NSError(domain: "Invalid URL", code: -1, userInfo: nil)))
            return
        }
        
        var request = URLRequest(url: url)
        request.setValue(API_KEY, forHTTPHeaderField: "x-api-key")
        
        URLSession.shared.dataTask(with: request) { data, response, error in
            if let error = error {
                completion(.failure(error))
                return
            }
            
            guard let data = data else {
                completion(.failure(NSError(domain: "No data", code: -1, userInfo: nil)))
                return
            }
            
            if let responseString = String(data: data, encoding: .utf8) {
                completion(.success(responseString))
            } else {
                completion(.failure(NSError(domain: "Invalid data", code: -1, userInfo: nil)))
            }
        }.resume()
    }
}

// Usage
Scraper.scrape { result in
    switch result {
    case .success(let response):
        print("Response: \(response)")
    case .failure(let error):
        print("Error: \(error)")
    }
}