Filtering json

I am trying to filter a json with a UICollectionView. It sorts but does not filter. What is going wrong. The collectionView works, the segue works, the records are sorted, but not filtered on the subjectitem. I am working with the storyboard and connected the segue from the cell to the fragment.

class SubjectViewController: UIViewController {
    @IBOutlet var collectionView: UICollectionView!
    
    var subjects: [SubjectItem] = [
        SubjectItem(imageName: "grace", name:"Grace"),
        SubjectItem(imageName: "family", name: "Family"),
        SubjectItem(imageName: "life", name: "Life"),
        SubjectItem(imageName: "love", name: "Love"),
        SubjectItem(imageName: "nature", name: "Nature"),
        SubjectItem(imageName: "telios", name: "Telios"),
        SubjectItem(imageName: "words", name: "Words"),
        SubjectItem(imageName: "work", name: "Work"),
        // Add other subjects
    ]

    override func viewDidLoad() {
        super.viewDidLoad()

        collectionView.dataSource = self
        collectionView.delegate = self
    }
}

struct SubjectItem {
    let imageName: String
    let name: String
}

extension SubjectViewController: UICollectionViewDataSource {
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return subjects.count
    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "SubjectCell", for: indexPath) as! SubjectCell
        let subject = subjects[indexPath.item]
        cell.configure(with: subject)
        return cell
    }
}

extension SubjectViewController: UICollectionViewDelegate {
    func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
        let selectedSubject = subjects[indexPath.item]
        navigateToPoemFragment2(with: selectedSubject)
    }
    
    func navigateToPoemFragment2(with subject: SubjectItem) {
        print("Selected Subject: \(subject.name)")
        if let poemFragment2 = storyboard?.instantiateViewController(withIdentifier: "PoemSortedList") as? PoemFragment2 {
            poemFragment2.selectedSubject = subject // Set the selectedSubject property
            navigationController?.pushViewController(poemFragment2, animated: true)
        }
    }


}

class SubjectCell: UICollectionViewCell {
    @IBOutlet var imageView: UIImageView!
    @IBOutlet var nameLabel: UILabel!

    func configure(with subject: SubjectItem) {
        imageView.image = UIImage(named: subject.imageName)
        nameLabel.text = subject.name
    }
}


import UIKit

class PoemFragment2: UITableViewController {
    
    @IBOutlet var poemTableView2: UITableView!
    
    var allPoems: [Poem] = [] // Store all poems here
    var filteredPoems: [Poem] = [] // Store filtered poems here
    var selectedSubject: SubjectItem? // This should be set when navigating from SubjectViewController
    
    override func viewDidLoad() {
        super.viewDidLoad()
        parseJSON()
    }
    
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return filteredPoems.count // Use filtered poems for table view data source
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let poem = filteredPoems[indexPath.row]
        let cell = poemTableView2.dequeueReusableCell(withIdentifier: "PoemCell2", for: indexPath) as! PoemTableViewCell2
        cell.poemName2.text = poem.poemName
        cell.subject2.text = poem.subject
        
        return cell
    }
    
    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        performSegue(withIdentifier: "poemDetail2", sender: self)
    }
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if let destination = segue.destination as? PoemDetailFragment2,
           let indexPath = tableView.indexPathForSelectedRow {
            destination.poem = filteredPoems[indexPath.row] // Pass the selected poem
        }
    }
    
    private func parseJSON() {
        guard let path = Bundle.main.path(forResource: "poem", ofType: "json") else {
            return
        }
        
        let url = URL(fileURLWithPath: path)
        
        do {
            let jsonData = try Data(contentsOf: url)
            allPoems = try JSONDecoder().decode(PoemData.self, from: jsonData).poem
            print("All Poems: \(allPoems)")
            filterAndSortPoems() // After parsing, apply filter and sort
        } catch {
            print("Error: \(error)")
        }
    }
    
    func filterAndSortPoems() {
        if let selectedSubject = selectedSubject {
            // Print the selected subject for debugging
            print("Selected Subject: \(selectedSubject.name)")
            
            // Filter poems by selected subject
            filteredPoems = allPoems.filter { poem in
                return poem.subject.localizedCaseInsensitiveCompare(selectedSubject.name) == .orderedSame
            }
            
            // Sort the filtered poems by subject
            filteredPoems.sort { $0.subject.localizedCaseInsensitiveCompare($1.subject) == .orderedAscending }
        } else {
            // If no subject is selected, show all poems
            filteredPoems = allPoems
            
            // Sort all poems by subject
            filteredPoems.sort { $0.subject.localizedCaseInsensitiveCompare($1.subject) == .orderedAscending }
        }
        
        // Print the filtered result for debugging
        print("Filtered Result: \(filteredPoems)")
        tableView.reloadData() // Reload the table view with filtered data
    }
}