import AppKit
import Foundation

// Where the running app came from, for the About panel. The short git SHA is
// stamped into the built Info.plist by the "Stamp git SHA" phase in
// ios/project.yml — NOT baked in at compile time: a Swift compilation
// condition (`#if GIT_SHA`) is a flag, not a value, so it can't carry the
// string, and CFBundleVersion is off-limits because Sparkle orders updates by
// it. The stamp is absent in a checkout without .git (a source tarball), and
// then the panel is simply the stock one.
enum BuildInfo {
    /// Short SHA of the commit the app was built from, `-dirty` when the tree
    /// had uncommitted changes. Nil when the build had no git to ask.
    static let gitSHA: String? = {
        let sha = Bundle.main.infoDictionary?["GitSHA"] as? String
        return (sha?.isEmpty ?? true) ? nil : sha
    }()

    /// The bundle's display name — "Eleven", or "Eleven Dev" for a dev alt, so
    /// the menu item names the app you're actually looking at.
    static var appName: String {
        let info = Bundle.main.infoDictionary
        return info?["CFBundleDisplayName"] as? String
            ?? info?["CFBundleName"] as? String
            ?? "Eleven"
    }

    /// Options for the standard About panel. The SHA rides in `.version` — the
    /// parenthetical next to the marketing version — so it reads "Version 1.0
    /// (2 · a1b2c3d)" with no custom window to maintain.
    static var aboutPanelOptions: [NSApplication.AboutPanelOptionKey: Any] {
        guard let sha = gitSHA else { return [:] }
        let build = Bundle.main.infoDictionary?["CFBundleVersion"] as? String ?? ""
        return [.version: build.isEmpty ? sha : "\(build) · \(sha)"]
    }

    static func showAboutPanel() {
        NSApp.activate(ignoringOtherApps: true)
        NSApp.orderFrontStandardAboutPanel(options: aboutPanelOptions)
    }
}