const std = @import("std");
pub fn build(b: *std.Build) void {
    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});
    const module = b.addModule("cloud9", .{
        .root_source_file = b.path("src/root.zig"),
        .target = target,
        .optimize = optimize,
    });
    const tests = b.addTest(.{ .root_module = module });
    b.step("test", "Run protocol and session tests").dependOn(&b.addRunArtifact(tests).step);
    const probe = b.addExecutable(.{
        .name = "cloud9-probe",
        .root_module = b.createModule(.{
            .root_source_file = b.path("test/differential/probe.zig"),
            .target = target,
            .optimize = optimize,
            .link_libc = true,
            .imports = &.{.{ .name = "cloud9", .module = module }},
        }),
    });
    b.installArtifact(probe);
    const session_probe = b.addExecutable(.{
        .name = "cloud9-session-probe",
        .root_module = b.createModule(.{
            .root_source_file = b.path("test/differential/session.zig"),
            .target = target,
            .optimize = optimize,
            .link_libc = true,
            .imports = &.{.{ .name = "cloud9", .module = module }},
        }),
    });

    const diff = b.addSystemCommand(&.{ "go", "run", "." });
    diff.setCwd(b.path("test/differential"));
    diff.addArg("--probe");
    diff.addArtifactArg(probe);
    diff.addArg("--session-probe");
    diff.addArtifactArg(session_probe);
    if (b.args) |args| diff.addArgs(args);
    b.step("differential", "Compare valid traffic with pinned 9fans and go9p").dependOn(&diff.step);
    const transport_tests = b.addTest(.{ .root_module = b.createModule(.{
        .root_source_file = b.path("test/transport.zig"),
        .target = target,
        .optimize = optimize,
        .link_libc = true,
        .imports = &.{.{ .name = "cloud9", .module = module }},
    }) });
    b.step("transport-test", "Test TCP, Unix and std.Io adapters").dependOn(&b.addRunArtifact(transport_tests).step);
    if (b.option(bool, "quic", "Test QUIC with system OpenSSL 3.6+") orelse false) {
        const header = b.addWriteFiles().add("openssl.h", "#include <openssl/ssl.h>\n#include <openssl/quic.h>\n#include <openssl/err.h>\n");
        const translated = b.addTranslateC(.{ .root_source_file = header, .target = target, .optimize = optimize, .link_libc = true });
        const ssl = translated.createModule();
        const tests_quic = b.addTest(.{ .root_module = b.createModule(.{
            .root_source_file = b.path("test/quic.zig"),
            .target = target,
            .optimize = optimize,
            .link_libc = true,
            .imports = &.{ .{ .name = "cloud9", .module = module }, .{ .name = "openssl", .module = ssl } },
        }) });
        tests_quic.root_module.linkSystemLibrary("ssl", .{});
        tests_quic.root_module.linkSystemLibrary("crypto", .{});
        b.step("quic-test", "Test optional QUIC transport").dependOn(&b.addRunArtifact(tests_quic).step);
    }
    const fuzz = b.addExecutable(.{ .name = "cloud9-fuzz", .root_module = b.createModule(.{
        .root_source_file = b.path("test/fuzz.zig"),
        .target = target,
        .optimize = optimize,
        .imports = &.{.{ .name = "cloud9", .module = module }},
    }) });
    const run_fuzz = b.addRunArtifact(fuzz);
    if (b.args) |args| run_fuzz.addArgs(args);
    b.step("fuzz", "Run deterministic local decoder and server probes (seed, iterations)").dependOn(&run_fuzz.step);
}