const std = @import("std");

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

    const exe = b.addExecutable(.{
        .name = "nyx_engine",
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/main.zig"),

            .target = target,
            .optimize = optimize,

            .imports = &.{},
        }),
    });

    b.installArtifact(exe);

    const run_step = b.step("run", "Run the app");

    const run_cmd = b.addRunArtifact(exe);
    run_step.dependOn(&run_cmd.step);

    run_cmd.step.dependOn(b.getInstallStep());

    if (b.args) |args| {
        run_cmd.addArgs(args);
    }

    const exe_tests = b.addTest(.{
        .root_module = exe.root_module,
    });

    const run_exe_tests = b.addRunArtifact(exe_tests);

    const test_step = b.step("test", "Run tests");
    test_step.dependOn(&run_exe_tests.step);

    //
    // DEPENDANCIES
    //

    const app = b.dependency("app", .{
        .target = target,
        .optimize = optimize,
    });
    exe.root_module.addImport("app", app.module("app"));

    const gtl = b.dependency("gtl", .{
        .target = target,
        .optimize = optimize,
    });
    exe.root_module.addImport("gtl", gtl.module("gtl"));

    const zla = b.dependency("zla", .{
        .target = target,
        .optimize = optimize,
    });
    exe.root_module.addImport("zla", zla.module("zla"));

    const math = b.dependency("NYXMath", .{
        .target = target,
        .optimize = optimize,
    });
    exe.root_module.addImport("math", math.module("NYXMath"));

    const world = b.dependency("NYXWorld", .{
        .target = target,
        .optimize = optimize,
    });
    exe.root_module.addImport("world", world.module("NYXWorld"));

    //
    // SYSTEM DEPENDENCIES
    //

    const sdl = b.addTranslateC(.{
        .target = target,
        .optimize = optimize,
        .root_source_file = b.path("./src/vendors/sdl3/sdl.h"),
    });
    exe.root_module.addImport("sdl", sdl.createModule());
    exe.root_module.linkSystemLibrary("SDL3", .{});

    const sdl3_glue = b.addTranslateC(.{
        .target = target,
        .optimize = optimize,
        .root_source_file = b.path("./src/vendors/sdl3_glue/sdl3webgpu.h"),
    });
    exe.root_module.addImport("sdl_glue", sdl3_glue.createModule());
    exe.root_module.addCSourceFile(.{ .file = b.path("./src/vendors/sdl3_glue/sdl3webgpu.c") });

    const wgpu = b.addTranslateC(.{
        .target = target,
        .optimize = optimize,
        .root_source_file = b.path("./src/vendors/wgpu/wgpu.h"),
    });
    exe.root_module.addImport("wgpu", wgpu.createModule());
    exe.root_module.linkSystemLibrary("wgpu_native", .{});
}