import Cocoa
import Popover

class MyPopoverConfiguration: DefaultConfiguration {
    override var backgroundColor: NSColor {
        return NSColor.systemRed
    }

    override var borderColor: NSColor? {
        return NSColor.red
    }
}

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
    var popover: Popover!

    func applicationDidFinishLaunching(_ aNotification: Notification) {
        let statusItemView = StatusItemView(frame: NSRect(width: 22.0, height: 20))

        let viewController = MainViewController()

        let menuItems: [Popover.MenuItemType] = [
            .item(Popover.MenuItem(title: "Settings", action: viewController.showSettings)),
            .separator,
            .item(Popover.MenuItem(title: "Quit", key: "q", action: viewController.quit))
        ]

        popover = Popover(with: MyPopoverConfiguration(), menuItems: menuItems)
        popover.prepare(with: statusItemView, contentViewController: viewController)
    }
}

public protocol PopoverConfiguration {
    /// The distance from Popover's arrow to a status item.
    var popoverToStatusItemMargin:  CGFloat { get }

    /// Popover's background color.
    var backgroundColor:            NSColor { get }

    /// Popover's border color.
    /// - Important:
    ///     If `borderColor` returns `nil`, settings `borderWidth` won't make any effect. See also: `borderWidth`.
    var borderColor:                NSColor? { get }

    /// Popover's border width.
    /// - Important:
    ///      If Popover's border color is set to `nil`, setting `borderWidth` won't make any effect.
    var borderWidth:                CGFloat { get }

    /// Defines Popover arrow height.
    var arrowHeight:                CGFloat { get }

    /// Defines Popover arrow width.
    var arrowWidth:                 CGFloat { get }

    /// Defines Popover corner radius.
    /// - Warning:
    ///     If this value is too big and if the Popover's status item (menu bar view) is too close to the right edge, the appearence of the Popover might be odd.
    var cornerRadius:               CGFloat { get }

    /// Defines Popover content edge insets.
    var contentEdgeInsets:          NSEdgeInsets { get }

    /// The distance from the right side of the Popover to the screen's edge.
    /// - Warning:
    ///     If this value is too big and if the Popover's status item (menu bar view) is too close to the right edge, the appearence of the Popover might be odd.
    var rightEdgeMargin:            CGFloat { get }
}