WindowsVersion

    pub const WindowsVersion = enum(u32) {
        nt4 = 0x04000000,
        win2k = 0x05000000,
        xp = 0x05010000,
        ws2003 = 0x05020000,
        vista = 0x06000000,
        win7 = 0x06010000,
        win8 = 0x06020000,
        win8_1 = 0x06030000,
        win10 = 0x0A000000, //aka win10_th1
        win10_th2 = 0x0A000001,
        win10_rs1 = 0x0A000002,
        win10_rs2 = 0x0A000003,
        win10_rs3 = 0x0A000004,
        win10_rs4 = 0x0A000005,
        win10_rs5 = 0x0A000006,
        win10_19h1 = 0x0A000007,
        win10_vb = 0x0A000008, //aka win10_19h2
        win10_mn = 0x0A000009, //aka win10_20h1
        win10_fe = 0x0A00000A, //aka win10_20h2
        win10_co = 0x0A00000B, //aka win10_21h1
        win10_ni = 0x0A00000C, //aka win10_21h2
        win10_cu = 0x0A00000D, //aka win10_22h2
        win11_zn = 0x0A00000E, //aka win11_21h2
        win11_ga = 0x0A00000F, //aka win11_22h2
        win11_ge = 0x0A000010, //aka win11_23h2
        win11_dt = 0x0A000011, //aka win11_24h2
        win11_br = 0x0A000012, //aka win11_25h2
        win11_kr = 0x0A000013, //aka win11_26h1
        _,

        /// Latest Windows version that the Zig Standard Library is aware of
        pub const latest = WindowsVersion.win11_kr;

        /// Compared against build numbers reported by the runtime to distinguish win10 versions,
        /// where 0x0A000000 + index corresponds to the WindowsVersion u32 value.
        pub const known_win10_build_numbers = [_]u32{
            10240, //win10 aka win10_th1
            10586, //win10_th2
            14393, //win10_rs1
            15063, //win10_rs2
            16299, //win10_rs3
            17134, //win10_rs4
            17763, //win10_rs5
            18362, //win10_19h1
            18363, //win10_vb aka win10_19h2
            19041, //win10_mn aka win10_20h1
            19042, //win10_fe aka win10_20h2
            19043, //win10_co aka win10_21h1
            19044, //win10_ni aka win10_21h2
            19045, //win10_cu aka win10_22h2
            22000, //win11_zn aka win11_21h2
            22621, //win11_ga aka win11_22h2
            22631, //win11_ge aka win11_23h2
            26100, //win11_dt aka win11_24h2
            26200, //win11_br aka win11_25h2
            28000, //win11_kr aka win11_26h1
        };

        /// Returns whether the first version `ver` is newer (greater) than or equal to the second version `ver`.
        pub inline fn isAtLeast(ver: WindowsVersion, min_ver: WindowsVersion) bool {
            return @backingInt(ver) >= @backingInt(min_ver);
        }

        pub const Range = struct {
            min: WindowsVersion,
            max: WindowsVersion,

            pub inline fn includesVersion(range: Range, ver: WindowsVersion) bool {
                return @backingInt(ver) >= @backingInt(range.min) and
                    @backingInt(ver) <= @backingInt(range.max);
            }

            /// Checks if system is guaranteed to be at least `version` or older than `version`.
            /// Returns `null` if a runtime check is required.
            pub inline fn isAtLeast(range: Range, min_ver: WindowsVersion) ?bool {
                if (@backingInt(range.min) >= @backingInt(min_ver)) return true;
                if (@backingInt(range.max) < @backingInt(min_ver)) return false;
                return null;
            }
        };

        pub fn parse(str: []const u8) !WindowsVersion {
            return std.meta.stringToEnum(WindowsVersion, str) orelse
                @fromBackingInt(@intCast(std.fmt.parseInt(u32, str, 0) catch
                    return error.InvalidOperatingSystemVersion));
        }

        /// This function is defined to serialize a Zig source code representation of this
        /// type, that, when parsed, will deserialize into the same data.
        pub fn format(wv: WindowsVersion, w: *std.Io.Writer) std.Io.Writer.Error!void {
            if (std.enums.tagName(WindowsVersion, wv)) |name| {
                var vecs: [2][]const u8 = .{ ".", name };
                return w.writeVecAll(&vecs);
            } else {
                return w.print("@enumFromInt(0x{X:0>8})", .{wv});
            }
        }
    }