import std;
import Crafter.Build;
namespace fs = std::filesystem;
using namespace Crafter;

extern "C" Configuration CrafterBuildProject(std::span<const std::string_view> args) {
    constexpr std::array<std::string_view, 10> networkInterfaces = {
        "interfaces/Crafter.Network",
        "interfaces/Crafter.Network-ClientTCP",
        "interfaces/Crafter.Network-ListenerTCP",
        "interfaces/Crafter.Network-ClientHTTP",
        "interfaces/Crafter.Network-ListenerHTTP",
        "interfaces/Crafter.Network-HTTP",
        "interfaces/Crafter.Network-HTTP3",
        "interfaces/Crafter.Network-ClientQUIC",
        "interfaces/Crafter.Network-ListenerQUIC",
        "interfaces/Crafter.Network-WebTransport",
    };

    std::vector<std::string> depArgs(args.begin(), args.end());
    Configuration* thread = GitProject({
        .source = { .url = "https://forgejo.catcrafts.net/Catcrafts/Crafter.Thread.git" },
        .args = depArgs,
    });

    Configuration cfg;
    cfg.path = "./";
    cfg.name = "crafter-network";
    cfg.outputName = "crafter-network";
    cfg.type = ConfigurationType::LibraryStatic;
    ApplyStandardArgs(cfg, args);
    cfg.dependencies = { thread };

    // Browser path: any wasm32-* target gets the browser network stack
    // (fetch + WebTransport via JS glue). msquic and the POSIX socket
    // backends are skipped; the listener / TCP partitions stub to empty
    // modules via #ifdef CRAFTER_NETWORK_BROWSER in their interface files.
    // HTTP3 (varint / frame / QPACK codec) is dropped entirely — it threw
    // exceptions for protocol errors, which the wasm build's -fno-exceptions
    // forbids, and the browser's fetch() handles HTTP-layer framing itself.
    bool browser = cfg.target.find("wasm") != std::string::npos;
    if (browser) {
        cfg.defines.push_back({"CRAFTER_NETWORK_BROWSER", ""});

        std::array<fs::path, 9> browserIfaces = {
            "interfaces/Crafter.Network",
            "interfaces/Crafter.Network-ClientTCP",
            "interfaces/Crafter.Network-ListenerTCP",
            "interfaces/Crafter.Network-ClientHTTP",
            "interfaces/Crafter.Network-ListenerHTTP",
            "interfaces/Crafter.Network-HTTP",
            "interfaces/Crafter.Network-ClientQUIC",
            "interfaces/Crafter.Network-ListenerQUIC",
            "interfaces/Crafter.Network-WebTransport",
        };
        std::array<fs::path, 2> browserImpls = {
            "implementations/Crafter.Network-ClientHTTP-Browser",
            "implementations/Crafter.Network-ClientQUIC-Browser",
        };
        cfg.GetInterfacesAndImplementations(browserIfaces, browserImpls);

        // JS glue shipped alongside the .wasm. The consuming executable's
        // wasi-browser runtime merges this into the env import object
        // before instantiation (mirrors Crafter.Graphics/dom-env.js).
        cfg.files.emplace_back(fs::path("additional/network-env.js"));
        return cfg;
    }

    constexpr std::array<std::string_view, 7> networkImplementations = {
        "implementations/Crafter.Network-ClientTCP",
        "implementations/Crafter.Network-ListenerTCP",
        "implementations/Crafter.Network-ClientHTTP",
        "implementations/Crafter.Network-ListenerHTTP",
        "implementations/Crafter.Network-ClientQUIC",
        "implementations/Crafter.Network-ListenerQUIC",
        "implementations/Crafter.Network-WebTransport",
    };

    // msquic — provides the QUIC transport used by ClientQUIC / ListenerQUIC.
    // Cloned + built via CMake into the per-project external cache; no system
    // package required. Submodules (quictls / clog / etc.) come via the
    // recursive clone Crafter.Build performs. We disable msquic's own tests,
    // tools and perf binaries since we only need the library.
    ExternalDependency& msquic = cfg.externalDependencies.emplace_back();
    msquic.name = "msquic";
    msquic.source.url = "https://github.com/microsoft/msquic.git";
    msquic.source.branch = "main";
    msquic.builder = ExternalBuilder::CMake;
    msquic.options = {
        "-DQUIC_TLS_LIB=quictls",
        "-DQUIC_BUILD_TEST=OFF",
        "-DQUIC_BUILD_TOOLS=OFF",
        "-DQUIC_BUILD_PERF=OFF",
        "-DQUIC_BUILD_SHARED=ON",
    };
    msquic.includeDirs = { "src/inc" };
    // msquic's CMakeLists overrides CMAKE_LIBRARY_OUTPUT_DIRECTORY with
    // QUIC_OUTPUT_DIR (defaults to bin/$<CONFIG>), so libmsquic.so lands in
    // a subdir of the cmake build dir rather than at its root. Point the
    // linker at the actual output location.
    msquic.libDirs = { "bin/Release" };
    msquic.libs = { "msquic" };
    std::array<fs::path, 10> ifaces;
    std::ranges::copy(networkInterfaces, ifaces.begin());
    std::array<fs::path, 7> impls;
    std::ranges::copy(networkImplementations, impls.begin());
    cfg.GetInterfacesAndImplementations(ifaces, impls);

    return cfg;
}