ErrorView.swift

import UIKit

protocol ErrorViewProtocol: AnyObject {
  func setDP3TSDKVersion(sdkVersion: String)
}

final class ErrorView: UIView {
  private typealias ShadowStyle = Style.General.Object.Shadow
  private typealias ContainerStackStyle = Style.General.Object.ContainerStack
  private typealias StackViewStyle = Style.General.Object.StackView
  private typealias ButtonStyle = Style.General.Object.Button
  private typealias IconStyle = Style.General.Object.Icon
  private typealias HeaderLabelStyle = Style.General.Object.HeaderLabel
  private typealias LayoutStyle = Style.General.Layout
  private typealias SubLabelStyle = Style.General.Object.SubLabel
  private typealias DescriptionStyle = Style.General.Object.Description

  var errorMessage: String? {
    didSet {
      errorMessageLabel.attributedText = errorMessage?.withAttributes(
        .font(.ainoRegular(size: DescriptionStyle.FontSize.medium)),
        .color(Asset.mustkivi.color),
        .minimumLineHeight(DescriptionStyle.minimumLineHeight)
      )
    }
  }

  let tryAgainButton = AppButton(style: .blueBordered)
  let phoneTapGesture = UITapGestureRecognizer()

  var onContactTehikTapped: (() -> Void)? {
    didSet {
      contactTehikLabel.highlightTap = onContactTehikTapped
    }
  }

  private let contentView = UIView()
  private let errorMessageLabel = UILabel()
  private let versionLabel = VersionLabel()
  private let contactTehikLabel: BulletPointView
  private typealias Strings = L10n.Error

  init() {
    contactTehikLabel = BulletPointView(
      text: Strings.contactTEHIK(Constants.tehikEmail, Constants.tehikPhoneNumber),
      highlight: [.bold(Constants.tehikEmail), .link(Constants.tehikPhoneNumber)]
    )
    super.init(frame: .zero)
    setup()
    layout()
  }

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

  private func setup() {
    backgroundColor = Asset.pahkla.color

    contentView.backgroundColor = .white

    contentView.layer.shadowColor = ShadowStyle.color.cgColor
    contentView.layer.shadowOpacity = ShadowStyle.opacity
    contentView.layer.shadowOffset = ShadowStyle.offset
    contentView.layer.shadowRadius = ShadowStyle.radius

    errorMessageLabel.numberOfLines = 0

    tryAgainButton.setTitle(Strings.tryAgainButton.uppercased(), for: .normal)
    contentView.addGestureRecognizer(phoneTapGesture)
    phoneTapGesture.delegate = self
  }

  private func layout() {
    let scrollView = UIScrollView()
    addSubview(scrollView)
    scrollView.autoPinEdgesToSuperviewEdges()

    let container = UIView()
    scrollView.addSubview(container)
    container.autoPinEdgesToSuperviewEdges(with: LayoutStyle.ContentInset.smallTop)
    container.autoMatch(.width, to: .width, of: self)

    let containerStack = UIStackView(arrangedSubviews: [createheaderView(), contentView])
    containerStack.axis = .vertical
    containerStack.isLayoutMarginsRelativeArrangement = true
    containerStack.layoutMargins = ContainerStackStyle.margins
    container.addSubview(containerStack)
    containerStack.autoPinEdge(toSuperviewEdge: .top)
    containerStack.autoPinEdge(toSuperviewEdge: .bottom)
    containerStack.autoAlignAxis(toSuperviewAxis: .vertical)
    containerStack
      .autoMatch(.width, to: .width, of: container, withMultiplier: 1,
                 relation: .lessThanOrEqual)
    containerStack.autoSetDimension(.width, toSize: ContainerStackStyle.width, relation: .lessThanOrEqual)

    let contentStack = UIStackView(arrangedSubviews: [
      createTopSection(),
      Divider(),
      createBottomSection()
    ])
    contentStack.axis = .vertical
    contentView.addSubview(contentStack)
    contentStack.autoPinEdgesToSuperviewEdges()

    tryAgainButton.autoSetDimension(.height, toSize: ButtonStyle.Height.medium)
  }

  func createTopSection() -> UIView {
    let stackView = UIStackView(arrangedSubviews: [
      BulletPointView(
        text: Strings.tryAgain(Strings.tryAgainTime),
        highlight: [.bold(Strings.tryAgainTime)]
      ),
      contactTehikLabel
    ])
    stackView.spacing = StackViewStyle.Spacing.small
    stackView.axis = .vertical
    stackView.isLayoutMarginsRelativeArrangement = true
    stackView.layoutMargins = StackViewStyle.margins
    return stackView
  }

  private func createBottomSection() -> UIView {
    let headerLabel = UILabel()
    headerLabel.numberOfLines = 0
    headerLabel.attributedText = Strings.errorHeading.withAttributes(
      .font(.ainoBold(size: SubLabelStyle.FontSize.medium))
    )

    versionLabel.layoutMargins = StackViewStyle.margins
    let versionStackView = UIStackView(arrangedSubviews: [versionLabel])
    versionStackView.axis = .horizontal
    versionStackView.alignment = .center
    versionStackView.isLayoutMarginsRelativeArrangement = true
    versionStackView.layoutMargins = StackViewStyle.margins
    let stackView =
      UIStackView(arrangedSubviews: [headerLabel, errorMessageLabel, tryAgainButton, versionStackView])
    stackView.spacing = StackViewStyle.Spacing.medium
    stackView.setCustomSpacing(StackViewStyle.Spacing.extraLarge, after: errorMessageLabel)
    stackView.axis = .vertical
    stackView.isLayoutMarginsRelativeArrangement = true
    stackView.layoutMargins = StackViewStyle.largeBottomMargins
    return stackView
  }

  private func createheaderView() -> UIView {
    let view = UIView()
    view.backgroundColor = Asset.pink.color
    let icon = UIImageView(image: Asset.attention.image)
    icon.tintColor = .white
    icon.autoSetDimensions(to: .init(width: IconStyle.width, height: IconStyle.height))
    let label = UILabel()
    label.attributedText = Strings.title.withAttributes(
      .color(.white),
      .font(.ainoHeadline(size: HeaderLabelStyle.FontSize.large))
    )

    let stackView = UIStackView(arrangedSubviews: [icon, label])
    stackView.spacing = StackViewStyle.Spacing.mediumLarge
    stackView.isLayoutMarginsRelativeArrangement = true
    stackView.layoutMargins = StackViewStyle.largeBottomMargins
    stackView.alignment = .center
    view.addSubview(stackView)
    stackView.autoPinEdgesToSuperviewEdges()
    return view
  }
}

extension ErrorView: UIGestureRecognizerDelegate {
  override func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
    contactTehikLabel.label
      .rectFor(text: Constants.tehikPhoneNumber)?
      .insetBy(dx: LayoutStyle.Margin.negative, dy: LayoutStyle.Margin.negative)
      .contains(gestureRecognizer.location(in: contactTehikLabel))
      ?? false
  }
}

extension ErrorView: ErrorViewProtocol {
  func setDP3TSDKVersion(sdkVersion: String) {
    versionLabel.setText(sdkVersion: sdkVersion)
  }
}