tv-anarchy/Sources/TVAnarchyCore/Display/DisplayInfo.swift

import Foundation

/// One connected display — mirrors `display_list` in the MCP display tools.
public struct DisplayInfo: Identifiable, Sendable, Equatable, Codable {
    public var id: UInt32 { displayId }
    public let displayId: UInt32
    public let name: String
    public let width: Int
    public let height: Int
    public let isPrimary: Bool
    public let isBuiltIn: Bool

    public init(displayId: UInt32, name: String, width: Int, height: Int,
                isPrimary: Bool, isBuiltIn: Bool) {
        self.displayId = displayId
        self.name = name
        self.width = width
        self.height = height
        self.isPrimary = isPrimary
        self.isBuiltIn = isBuiltIn
    }

    public var shortLabel: String {
        if isBuiltIn { return "Built-in Display" }
        return name.isEmpty ? "External Display" : name
    }

    /// First non-built-in screen (typical HDMI TV / monitor).
    public static func pickTV(from displays: [DisplayInfo]) -> DisplayInfo? {
        displays.first { !$0.isBuiltIn }
    }

    /// Resolve the playback target: explicit preference when still connected, else
    /// auto-pick the external TV when present, else the primary display.
    public static func resolve(preference: UInt32?, from displays: [DisplayInfo]) -> DisplayInfo? {
        guard !displays.isEmpty else { return nil }
        if let pref = preference, let found = displays.first(where: { $0.displayId == pref }) {
            return found
        }
        return pickTV(from: displays) ?? displays.first(where: \.isPrimary) ?? displays.first
    }
}