import SnapKit
import UIKit

/// 注销申请明确受理后的退出态结果页；不持有会话、凭证或注销接口。
@MainActor
final class StoreAccountDeregistrationSubmittedViewController: BaseViewController {
    private typealias Style = StoreAccountDeregistrationStyle
    private let identityName: String
    private let coolingUntil: String?
    private let onDone: () -> Void
    private let scrollView = UIScrollView()
    private let contentStack = UIStackView()
    private let bottomBar = UIView()
    private let doneButton = Style.button("完成", id: "deregister.submitted.done")
    private var didFinish = false

    /// 使用提交时冻结的展示信息创建页面；点击完成后由 Scene 进入登录页。
    init(identityName: String, coolingUntil: String?, onDone: @escaping () -> Void) {
        let normalizedName = identityName.trimmingCharacters(in: .whitespacesAndNewlines)
        self.identityName = normalizedName.isEmpty ? "当前门店身份" : normalizedName
        self.coolingUntil = coolingUntil?.trimmingCharacters(in: .whitespacesAndNewlines)
        self.onDone = onDone
        super.init(nibName: nil, bundle: nil)
    }

    @available(*, unavailable)
    required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") }

    override func setupNavigationBar() {
        title = "注销账号"
        navigationItem.hidesBackButton = true
    }

    override func setupUI() {
        view.backgroundColor = Style.pageBackground
        view.addSubview(scrollView)
        scrollView.alwaysBounceVertical = true
        scrollView.addSubview(contentStack)
        contentStack.axis = .vertical
        contentStack.spacing = 18

        let badge = Style.iconBadge("lock", iconSize: 36)
        let badgeRow = UIView()
        badgeRow.addSubview(badge)
        badge.snp.makeConstraints { $0.top.bottom.centerX.equalToSuperview() }

        let titleLabel = Style.label("注销申请已提交", size: 24, weight: .semibold)
        titleLabel.textAlignment = .center
        titleLabel.accessibilityIdentifier = "deregister.submitted.title"
        let identityLabel = Style.label("当前身份：\(identityName)", size: 15, color: Style.textSecondary)
        identityLabel.textAlignment = .center
        identityLabel.accessibilityIdentifier = "deregister.submitted.identity"
        contentStack.addArrangedSubview(Style.stack([badgeRow, titleLabel, identityLabel], spacing: 12))

        let deadlineIcon = Style.icon("calendar", size: 22)
        deadlineIcon.snp.makeConstraints { $0.width.equalTo(28) }
        let deadlineTextValue = coolingUntil.flatMap { $0.isEmpty ? nil : $0 } ?? "以服务端状态为准"
        let deadlineLabel = Style.label(deadlineTextValue, size: 19, weight: .semibold)
        deadlineLabel.accessibilityIdentifier = "deregister.submitted.deadline"
        let deadlineText = Style.stack([
            Style.label("冷静期截止时间", size: 13, color: Style.textSecondary),
            deadlineLabel
        ], spacing: 8)
        let deadlineRow = UIStackView(arrangedSubviews: [deadlineIcon, deadlineText])
        deadlineRow.axis = .horizontal
        deadlineRow.alignment = .center
        deadlineRow.spacing = 12
        contentStack.addArrangedSubview(Style.card(deadlineRow))

        let infoIcon = Style.icon("info.circle", size: 17)
        infoIcon.snp.makeConstraints { $0.width.equalTo(22) }
        let infoLabel = Style.label("重新登录该身份自动撤销申请", size: 13, color: Style.textSecondary)
        let infoRow = UIStackView(arrangedSubviews: [infoIcon, infoLabel])
        infoRow.axis = .horizontal
        infoRow.alignment = .center
        infoRow.spacing = 8
        contentStack.addArrangedSubview(Style.card(infoRow, background: Style.infoBackground))

        view.addSubview(bottomBar)
        bottomBar.backgroundColor = .white
        bottomBar.addSubview(doneButton)
        doneButton.addTarget(self, action: #selector(doneTapped), for: .touchUpInside)
        doneButton.snp.makeConstraints {
            $0.top.equalToSuperview().offset(12)
            $0.leading.trailing.equalToSuperview().inset(16)
            $0.bottom.equalToSuperview().inset(12)
        }
    }

    override func setupConstraints() {
        bottomBar.snp.makeConstraints {
            $0.leading.trailing.equalToSuperview()
            $0.bottom.equalTo(view.safeAreaLayoutGuide)
        }
        scrollView.snp.makeConstraints {
            $0.top.leading.trailing.equalTo(view.safeAreaLayoutGuide)
            $0.bottom.equalTo(bottomBar.snp.top)
        }
        contentStack.snp.makeConstraints {
            $0.top.equalTo(scrollView.contentLayoutGuide).offset(32)
            $0.leading.trailing.bottom.equalTo(scrollView.contentLayoutGuide).inset(16)
            $0.width.equalTo(scrollView.frameLayoutGuide).offset(-32)
        }
    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        navigationItem.hidesBackButton = true
        navigationController?.interactivePopGestureRecognizer?.isEnabled = false
    }

    @objc private func doneTapped() {
        guard !didFinish else { return }
        didFinish = true
        doneButton.isEnabled = false
        onDone()
    }
}