import UIKit

final class WordListViewController: UITableViewController {
    private let category: WordCategory

    init(category: WordCategory) {
        self.category = category
        super.init(style: .plain)
    }

    @available(*, unavailable)
    required init?(coder: NSCoder) { fatalError() }

    override func viewDidLoad() {
        super.viewDidLoad()
        title = category.name
        navigationItem.largeTitleDisplayMode = .never
        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")

        let quizMenu = UIMenu(title: "", children: [
            UIAction(title: QuizMode.enToZh.rawValue) { [weak self] _ in self?.startQuiz(.enToZh) },
            UIAction(title: QuizMode.zhToEn.rawValue) { [weak self] _ in self?.startQuiz(.zhToEn) },
            UIAction(title: QuizMode.spelling.rawValue) { [weak self] _ in self?.startQuiz(.spelling) }
        ])
        navigationItem.rightBarButtonItem = UIBarButtonItem(title: "测验", menu: quizMenu)
    }

    private func startQuiz(_ mode: QuizMode) {
        if category.words.count <= 10 {
            let config = QuizConfig(mode: mode, words: category.words)
            navigationController?.pushViewController(QuizViewController(config: config), animated: true)
        } else {
            let request = QuizSetupRequest(mode: mode, words: category.words)
            navigationController?.pushViewController(QuizSetupViewController(request: request), animated: true)
        }
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        category.words.count
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let word = category.words[indexPath.row]
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
        var content = cell.defaultContentConfiguration()
        content.text = word.word
        content.textProperties.font = .preferredFont(forTextStyle: .headline)
        content.secondaryText = word.meaning
        content.secondaryTextProperties.color = .secondaryLabel
        cell.contentConfiguration = content
        cell.accessoryType = .disclosureIndicator
        return cell
    }

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        tableView.deselectRow(at: indexPath, animated: true)
        navigationController?.pushViewController(WordDetailViewController(word: category.words[indexPath.row]), animated: true)
    }
}