smart_printer/smart_printer/SidebarView.swift

import Cocoa

enum SidebarDestination: Int, CaseIterable {
    case home
    case scan
    case print
    case scanAndHome
    case settings
}

final class SidebarView: NSView, AppearanceRefreshable {
    private var appNameLabel: NSTextField!
    private var logoIcon: NSImageView!
    private var premiumCard: SidebarPremiumCardView!
    private var freeUsesBanner: FreeUsesBannerView!
    var onDestinationSelected: ((SidebarDestination) -> Void)?
    var onPremiumUpgradeTapped: (() -> Void)?
    var onManageSubscriptionTapped: (() -> Void)?

    private var navItems: [SidebarNavItem] = []

    init() {
        super.init(frame: .zero)
        wantsLayer = true
        layer?.backgroundColor = AppTheme.sidebarBackground.cgColor
        translatesAutoresizingMaskIntoConstraints = false
        setup()
    }

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

    func select(_ destination: SidebarDestination) {
        for (index, item) in navItems.enumerated() {
            item.isSelected = navDestination(at: index) == destination
        }
    }

    func refreshPremiumState() {
        premiumCard?.refreshFromStore()
        freeUsesBanner?.refreshFromStore()
    }

    func refreshAppearance() {
        layer?.backgroundColor = AppTheme.sidebarBackground.cgColor
        appNameLabel?.refreshThemeLabelColor()
        logoIcon?.image = nil
        logoIcon?.image = NSImage(named: "AppLogo")
        navItems.forEach { $0.refreshAppearance() }
        freeUsesBanner?.refreshAppearance()
        premiumCard?.refreshAppearance()
    }

    private func navDestination(at index: Int) -> SidebarDestination {
        switch index {
        case 0: return .home
        case 1: return .scan
        case 2: return .print
        case 3: return .settings
        default: return .home
        }
    }

    private func setup() {
        let logoContainer = NSView()
        logoContainer.translatesAutoresizingMaskIntoConstraints = false

        let logoIcon = NSImageView()
        self.logoIcon = logoIcon
        logoIcon.translatesAutoresizingMaskIntoConstraints = false
        logoIcon.image = NSImage(named: "AppLogo")
        logoIcon.imageScaling = .scaleProportionallyUpOrDown

        appNameLabel = NSTextField.themeLabel(AppStoreConfig.displayName, style: .primary, font: AppTheme.semiboldFont(size: 15))
        appNameLabel.alignment = .center
        appNameLabel.translatesAutoresizingMaskIntoConstraints = false

        let navStack = NSStackView()
        navStack.orientation = .vertical
        navStack.spacing = 4
        navStack.alignment = .leading
        navStack.translatesAutoresizingMaskIntoConstraints = false

        let bottomNavStack = NSStackView()
        bottomNavStack.orientation = .vertical
        bottomNavStack.spacing = 12
        bottomNavStack.alignment = .leading
        bottomNavStack.translatesAutoresizingMaskIntoConstraints = false

        let homeItem = SidebarNavItem(title: "Home", symbolName: "house.fill", isSelected: true)
        let scanItem = SidebarNavItem(title: "Scan", symbolName: "viewfinder")
        let printItem = SidebarNavItem(title: "Print", symbolName: "printer")
        let settingsItem = SidebarNavItem(title: "Settings", symbolName: "gearshape")

        premiumCard = SidebarPremiumCardView()
        premiumCard.onUpgradeTapped = { [weak self] in
            self?.onPremiumUpgradeTapped?()
        }
        premiumCard.onManageSubscriptionTapped = { [weak self] in
            self?.onManageSubscriptionTapped?()
        }

        freeUsesBanner = FreeUsesBannerView()

        navItems = [homeItem, scanItem, printItem, settingsItem]

        for (index, item) in navItems.enumerated() {
            item.onClick = { [weak self] in
                guard let self else { return }
                let destination = self.navDestination(at: index)
                self.select(destination)
                self.onDestinationSelected?(destination)
            }
        }

        for item in navItems {
            navStack.addArrangedSubview(item)
        }
        bottomNavStack.addArrangedSubview(freeUsesBanner)
        bottomNavStack.addArrangedSubview(premiumCard)

        addSubview(logoContainer)
        logoContainer.addSubview(logoIcon)
        addSubview(appNameLabel)
        addSubview(navStack)
        addSubview(bottomNavStack)

        let divider = NSBox()
        divider.boxType = .separator
        divider.translatesAutoresizingMaskIntoConstraints = false
        addSubview(divider)

        NSLayoutConstraint.activate([
            widthAnchor.constraint(equalToConstant: AppTheme.sidebarWidth),

            logoContainer.topAnchor.constraint(equalTo: topAnchor, constant: 52),
            logoContainer.centerXAnchor.constraint(equalTo: centerXAnchor),
            logoContainer.widthAnchor.constraint(equalToConstant: 56),
            logoContainer.heightAnchor.constraint(equalToConstant: 56),

            logoIcon.centerXAnchor.constraint(equalTo: logoContainer.centerXAnchor),
            logoIcon.centerYAnchor.constraint(equalTo: logoContainer.centerYAnchor),
            logoIcon.widthAnchor.constraint(equalToConstant: 48),
            logoIcon.heightAnchor.constraint(equalToConstant: 48),

            appNameLabel.topAnchor.constraint(equalTo: logoContainer.bottomAnchor, constant: 8),
            appNameLabel.centerXAnchor.constraint(equalTo: centerXAnchor),

            navStack.topAnchor.constraint(equalTo: appNameLabel.bottomAnchor, constant: 32),
            navStack.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 12),
            navStack.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -12),

            bottomNavStack.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 16),
            bottomNavStack.trailingAnchor.constraint(equalTo: trailingAnchor, constant: -16),
            bottomNavStack.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -20),

            homeItem.widthAnchor.constraint(equalTo: navStack.widthAnchor),
            scanItem.widthAnchor.constraint(equalTo: navStack.widthAnchor),
            printItem.widthAnchor.constraint(equalTo: navStack.widthAnchor),
            settingsItem.widthAnchor.constraint(equalTo: navStack.widthAnchor),
            freeUsesBanner.widthAnchor.constraint(equalTo: bottomNavStack.widthAnchor),
            premiumCard.widthAnchor.constraint(equalTo: bottomNavStack.widthAnchor),

            divider.trailingAnchor.constraint(equalTo: trailingAnchor),
            divider.topAnchor.constraint(equalTo: topAnchor),
            divider.bottomAnchor.constraint(equalTo: bottomAnchor),
            divider.widthAnchor.constraint(equalToConstant: 1),
        ])
    }
}