const std = @import("std");

pub fn build(b: *std.Build) void {
    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});

    const libsodium_dep = b.dependency(
        "libsodium",
        .{
            .target = target,
            .optimize = optimize,
            .static = true,
            .shared = false,
        },
    );

    const exe = b.addExecutable(.{
        .name = "vtund",
        .target = target,
        .optimize = optimize,
    });

    exe.linkLibrary(libsodium_dep.artifact("sodium"));
    exe.linkLibC();
    exe.addCSourceFiles(.{
        .files = &.{
            "auth.c",
            "client.c",
            //"freebsd/tun_dev.c",
            "generic/pipe_dev.c",
            "generic/pty_dev.c",
            //"generic/tap_dev.c",
            "generic/tcp_proto.c",
            //"generic/tun_dev.c",
            "generic/udp_proto.c",
            "lfd_encrypt.c",
            "lfd_lzo.c",
            "lfd_shaper.c",
            "lfd_zlib.c",
            "lib.c",
            "linkfd.c",
            "linux/tap_dev.c",
            "linux/tun_dev.c",
            "llist.c",
            "lock.c",
            "main.c",
            "netlib.c",
            //"openbsd/tun_dev.c",
            "server.c",
            //"svr4/tap_dev.c",
            //"svr4/tun_dev.c",
            "tunnel.c",

            "cfg_file.c",
            "cfg_file.lex.c",
        },
        .flags = &.{
            "-D_GNU_SOURCE",
            "-fstack-protector-all",
            "-fno-strict-overflow",
            "-fno-strict-aliasing",
        },
    });

    exe.addConfigHeader(b.addConfigHeader(.{
        .include_path = "config.h",
    }, .{
        .VTUN_CONFIG_FILE = "/etc/vtund.conf",
        .VTUN_PID_FILE = "/var/run/vtund.pid",
        .VTUN_STAT_DIR = "/var/log/vtund",
        .VTUN_LOCK_DIR = "/var/lock/vtund",

        .ENABLE_NAT_HACK = 0,
        .HAVE_ARPA_INET_H = 1,
        .HAVE_FORK = 1,

        //.HAVE_GETPT = 1, // pty tunnels
        //.HAVE_GRANTPT = 1, // pty tunnels

        .HAVE_INTTYPES_H = 1,
        .HAVE_LINUX_IF_TUN_H = 1,
        .HAVE_NETDB_H = 1,
        .HAVE_NETINET_IN_H = 1,
        .HAVE_NETINET_IN_SYSTM_H = 1,
        .HAVE_NETINET_IP_H = 1,
        .HAVE_NETINET_TCP_H = 1,
        //.HAVE_PTSNAME = 1, // pty tunnels
        .HAVE_RESOLV_H = 1,
        .HAVE_SCHED_H = 1,
        .HAVE_SHAPER = 1,
        .HAVE_SODIUM = 1,
        .HAVE_STDINT_H = 1,
        .HAVE_STDIO_H = 1,
        .HAVE_STDLIB_H = 1,
        .HAVE_STRINGS_H = 1,
        .HAVE_STRING_H = 1,
        .HAVE_SYS_RESOURCE_H = 1,
        .HAVE_SYS_STAT_H = 1,
        .HAVE_SYS_TYPES_H = 1,
        .HAVE_UNISTD_H = 1,
        //.HAVE_UNLOCKPT = 1, // pty tunnels
        .HAVE_VFORK = 1,
        .HAVE_WORKING_FORK = 1,
        .HAVE_WORKING_VFORK = 1,
        .PACKAGE_BUGREPORT = "",
        .PACKAGE_NAME = "vtun",
        .PACKAGE_STRING = "vtun = 3",
        .PACKAGE_TARNAME = "vtun",
        .PACKAGE_URL = "",
        .PACKAGE_VERSION = "3",
        .STDC_HEADERS = 1,
        .VTUN_VER = "3.X = 10/10/2024",
        .YYTEXT_POINTER = 1,
    }));

    exe.addIncludePath(b.path("."));

    b.installArtifact(exe);
}