public enum PlayerAction: Hashable, Sendable {
    case play, pause, mute, unmute, volumeUp, volumeDown
    case seekForward5s, seekBackward5s, seekForward10s, seekBackward10s
    case stepFrameForward, stepFrameBackward
    case enterFullscreen, exitFullscreen, enterCompact, exitCompact
    case enableAlwaysOnTop, disableAlwaysOnTop
    case openFile, openStream, closeFile, quit
    case showBufferInfo, hideBufferInfo
    case enableCompactSnapping, disableCompactSnapping
    case enableAutomaticQuality, disableAutomaticQuality
    case qualityDefault, quality(Int)

    static let namedActions: [(String, PlayerAction)] = [
        ("play", .play), ("pause", .pause), ("mute", .mute), ("unmute", .unmute),
        ("volume_up", .volumeUp), ("volume_down", .volumeDown),
        ("seek_forward_5s", .seekForward5s), ("seek_backward_5s", .seekBackward5s),
        ("seek_forward_10s", .seekForward10s), ("seek_backward_10s", .seekBackward10s),
        ("step_frame_forward", .stepFrameForward), ("step_frame_backward", .stepFrameBackward),
        ("enter_fullscreen", .enterFullscreen), ("exit_fullscreen", .exitFullscreen),
        ("enter_compact", .enterCompact), ("exit_compact", .exitCompact),
        ("enable_always_on_top", .enableAlwaysOnTop), ("disable_always_on_top", .disableAlwaysOnTop),
        ("open_file", .openFile), ("open_stream", .openStream), ("close_file", .closeFile), ("quit", .quit),
        ("show_buffer_info", .showBufferInfo), ("hide_buffer_info", .hideBufferInfo),
        ("enable_compact_snapping", .enableCompactSnapping), ("disable_compact_snapping", .disableCompactSnapping),
        ("enable_automatic_quality", .enableAutomaticQuality), ("disable_automatic_quality", .disableAutomaticQuality),
        ("quality_default", .qualityDefault)
    ]
    private static let actionsByName = Dictionary(uniqueKeysWithValues: namedActions)
    private static let namesByAction = Dictionary(uniqueKeysWithValues: namedActions.map { ($0.1, $0.0) })

    public init?(name: String) {
        if let action = Self.actionsByName[name] {
            self = action
        } else if name.hasPrefix("quality_"), name.hasSuffix("p") {
            let digits = name.dropFirst("quality_".count).dropLast()
            guard !digits.isEmpty, digits.allSatisfy({ $0 >= "0" && $0 <= "9" }),
                  let height = Int(digits), height > 0, String(height) == digits else { return nil }
            self = .quality(height)
        } else {
            return nil
        }
    }

    public var name: String {
        if case .quality(let height) = self { return "quality_\(height)p" }
        return Self.namesByAction[self]!
    }

    public var inverse: PlayerAction? {
        switch self {
        case .play: return .pause
        case .pause: return .play
        case .mute: return .unmute
        case .unmute: return .mute
        case .enterFullscreen: return .exitFullscreen
        case .exitFullscreen: return .enterFullscreen
        case .enterCompact: return .exitCompact
        case .exitCompact: return .enterCompact
        case .enableAlwaysOnTop: return .disableAlwaysOnTop
        case .disableAlwaysOnTop: return .enableAlwaysOnTop
        case .showBufferInfo: return .hideBufferInfo
        case .hideBufferInfo: return .showBufferInfo
        case .enableCompactSnapping: return .disableCompactSnapping
        case .disableCompactSnapping: return .enableCompactSnapping
        case .enableAutomaticQuality: return .disableAutomaticQuality
        case .disableAutomaticQuality: return .enableAutomaticQuality
        default: return nil
        }
    }

    public var allowsRepeat: Bool {
        switch self {
        case .volumeUp, .volumeDown, .seekForward5s, .seekBackward5s,
             .seekForward10s, .seekBackward10s, .stepFrameForward, .stepFrameBackward: return true
        default: return false
        }
    }
}