Crafter.Build/tests/WindowsViaSsh.cpp

/*
Crafter® Build
Copyright (C) 2026 Catcrafts®
Catcrafts.net

LGPL-3.0-only.

End-to-end Linux→Windows via SSH:
the fixture cross-compiles main.cpp for x86_64-w64-mingw32 (V2's existing MinGW
build path), the resulting .exe + runtime DLLs (which Build() already copies
into the output dir for the mingw target) get scp'd to a Windows host (winvm by
default), then ssh runs the .exe under cmd.exe and we capture stdout. Exercises
the same build-system features HelloWorld covers, but for the Windows target
path. Gated on:
  - mingw cross-toolchain installed on the host (x86_64-w64-mingw32-g++)
  - CRAFTER_TEST_WIN_SSH_HOST env var set (defaults to no-skip if "winvm" is
    reachable, but explicit opt-in keeps CI green by default)
*/

import std;
#include "TestUtil.h"
namespace fs = std::filesystem;
using namespace TestUtil;

namespace {
    bool ToolPresent(std::string_view name) {
        std::string cmd = std::format("which {} > /dev/null 2>&1", name);
        return std::system(cmd.c_str()) == 0;
    }

    bool Contains(std::string_view haystack, std::string_view needle) {
        return haystack.find(needle) != std::string_view::npos;
    }
}

int main() {
    try {
        const char* hostEnv = std::getenv("CRAFTER_TEST_WIN_SSH_HOST");
        if (!hostEnv || !*hostEnv) {
            std::println("(skipped: set CRAFTER_TEST_WIN_SSH_HOST to enable, e.g. winvm)");
            return 0;
        }
        std::string host = hostEnv;

        if (!ToolPresent("x86_64-w64-mingw32-g++")) {
            std::println("(skipped: mingw cross-toolchain not on PATH)");
            return 0;
        }

        // Probe the SSH host; skip on transient unreachability rather than fail.
        std::string probe = std::format(
            "ssh -o BatchMode=yes -o ConnectTimeout=5 {} \"ver\" > /dev/null 2>&1", host);
        if (std::system(probe.c_str()) != 0) {
            std::println("(skipped: ssh {} not reachable)", host);
            return 0;
        }

        fs::path projectRoot = fs::current_path();
        fs::path src = projectRoot / "tests" / "fixtures" / "windows-via-ssh";
        fs::path crafterBuild = projectRoot / "bin" / "crafter-build";

        fs::path work = CopyFixtureToTemp("WindowsViaSsh", src);

        std::string remoteDir = "C:/temp/crafter-test-winhello";
        auto run = RunInDir(work, std::format(
            "CRAFTER_BUILD_RUNNER_x86_64_w64_mingw32='sshwin:{}:{}' '{}' test",
            host, remoteDir, crafterBuild.string()));

        if (run.exitCode != 0) {
            std::println(std::cerr, "inner runner failed (rc={}):\n{}", run.exitCode, run.output);
            return 1;
        }
        std::string marker = std::format("\xE2\x9C\x85 winhello (sshwin:{})", host);
        if (!Contains(run.output, marker)) {
            std::println(std::cerr,
                "expected marker {:?} not found in inner output:\n{}",
                marker, run.output);
            return 1;
        }
        return 0;
    } catch (const std::exception& e) {
        std::println(std::cerr, "test exception: {}", e.what());
        return 1;
    }
}