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

extern "C" Configuration CrafterBuildProject(std::span<const std::string_view> args) {
    std::vector<std::string> depArgs(args.begin(), args.end());
    Configuration* event = GitProject({
        .source = { .url = "https://forgejo.catcrafts.net/Catcrafts/Crafter.Event.git" },
        .args = depArgs,
    });
    Configuration* math = GitProject({
        .source = { .url = "https://forgejo.catcrafts.net/Catcrafts/Crafter.Math.git" },
        .args = depArgs,
    });
    Configuration* asset = GitProject({
        .source = { .url = "https://forgejo.catcrafts.net/Catcrafts/Crafter.Asset.git" },
        .args = depArgs,
    });

    Configuration cfg;
    cfg.path = "./";
    cfg.name = "Crafter.Graphics";
    cfg.outputName = "Crafter.Graphics";
    cfg.type = ConfigurationType::LibraryStatic;
    auto opts = ApplyStandardArgs(cfg, args);
    cfg.dependencies = { event, math, asset };

    // Window backend follows the target triple. V1 had separate lib-wayland /
    // lib-win32 configurations; V2 picks the right one automatically based on
    // where the build is going. Cross-compile (`--target=...`) flips the
    // backend along with everything else.
    bool windows = cfg.target.find("windows") != std::string::npos
        || cfg.target.find("mingw") != std::string::npos;
    if (windows) {
        cfg.defines.push_back({"CRAFTER_GRAPHICS_WINDOW_WIN32", ""});
        cfg.linkFlags.push_back("-lkernel32");
        cfg.linkFlags.push_back("-luser32");
        cfg.linkFlags.push_back("-lgdi32");
    } else {
        cfg.defines.push_back({"CRAFTER_GRAPHICS_WINDOW_WAYLAND", ""});
        cfg.linkFlags.push_back("-lwayland-client");
        cfg.linkFlags.push_back("-lxkbcommon");
        cfg.cFiles.push_back("lib/xdg-shell-protocol");
        cfg.cFiles.push_back("lib/wayland-xdg-decoration-unstable-v1-client-protocol");
        cfg.cFiles.push_back("lib/fractional-scale-v1");
        cfg.cFiles.push_back("lib/viewporter");
    }

    // Renderer: --vulkan opts in (clones Vulkan-Headers + Vulkan-Utility-Libraries
    // for headers and links libvulkan); default is the software path.
    if (opts.Has("--vulkan")) {
        cfg.defines.push_back({"CRAFTER_GRAPHICS_RENDERER_VULKAN", ""});
        ExternalDependency& vkHeaders = cfg.externalDependencies.emplace_back();
        vkHeaders.name = "Vulkan-Headers";
        vkHeaders.source.url = "https://github.com/KhronosGroup/Vulkan-Headers.git";
        vkHeaders.builder = ExternalBuilder::None;
        vkHeaders.includeDirs = { "include" };
        ExternalDependency& vkUtility = cfg.externalDependencies.emplace_back();
        vkUtility.name = "Vulkan-Utility-Libraries";
        vkUtility.source.url = "https://github.com/KhronosGroup/Vulkan-Utility-Libraries.git";
        vkUtility.builder = ExternalBuilder::None;
        vkUtility.includeDirs = { "include" };
        cfg.linkFlags.push_back(windows ? "-lvulkan-1" : "-lvulkan");
    } else {
        cfg.defines.push_back({"CRAFTER_GRAPHICS_RENDERER_SOFTWARE", ""});
    }

    if (opts.Has("--timing")) cfg.defines.push_back({"CRAFTER_TIMING", ""});

    std::array<fs::path, 24> ifaces = {
        "interfaces/Crafter.Graphics",
        "interfaces/Crafter.Graphics-Animation",
        "interfaces/Crafter.Graphics-DescriptorHeapVulkan",
        "interfaces/Crafter.Graphics-Device",
        "interfaces/Crafter.Graphics-Font",
        "interfaces/Crafter.Graphics-ForwardDeclarations",
        "interfaces/Crafter.Graphics-GridElement",
        "interfaces/Crafter.Graphics-ImageVulkan",
        "interfaces/Crafter.Graphics-Mesh",
        "interfaces/Crafter.Graphics-MouseElement",
        "interfaces/Crafter.Graphics-PipelineRTVulkan",
        "interfaces/Crafter.Graphics-RenderingElement2D",
        "interfaces/Crafter.Graphics-RenderingElement2DBase",
        "interfaces/Crafter.Graphics-RenderingElement2DVulkan",
        "interfaces/Crafter.Graphics-RenderingElement3D",
        "interfaces/Crafter.Graphics-Rendertarget",
        "interfaces/Crafter.Graphics-SamplerVulkan",
        "interfaces/Crafter.Graphics-ShaderBindingTableVulkan",
        "interfaces/Crafter.Graphics-ShaderVulkan",
        "interfaces/Crafter.Graphics-Transform2D",
        "interfaces/Crafter.Graphics-Types",
        "interfaces/Crafter.Graphics-VulkanBuffer",
        "interfaces/Crafter.Graphics-VulkanTransition",
        "interfaces/Crafter.Graphics-Window",
    };
    std::array<fs::path, 7> impls = {
        "implementations/Crafter.Graphics-Device",
        "implementations/Crafter.Graphics-Font",
        "implementations/Crafter.Graphics-Mesh",
        "implementations/Crafter.Graphics-MouseElement",
        "implementations/Crafter.Graphics-RenderingElement3D",
        "implementations/Crafter.Graphics-Transform2D",
        "implementations/Crafter.Graphics-Window",
    };
    cfg.GetInterfacesAndImplementations(ifaces, impls);

    return cfg;
}