const std = @import("std");
const glfw = @import("libs/mach-glfw/build.zig");
const gpu_dawn_sdk = @import("libs/mach-gpu-dawn/sdk.zig");
const gpu_sdk = @import("sdk.zig");
const system_sdk = @import("libs/mach-glfw/system_sdk.zig");

pub fn build(b: *std.build.Builder) void {
    const mode = b.standardReleaseOptions();
    const target = b.standardTargetOptions(.{});
    const gpu_dawn = gpu_dawn_sdk.Sdk(.{
        .glfw = glfw,
        .glfw_include_dir = "libs/mach-glfw/upstream/glfw/include",
        .system_sdk = system_sdk,
    });
    const gpu = gpu_sdk.Sdk(.{
        .glfw = glfw,
        .gpu_dawn = gpu_dawn,
    });

    const gpu_dawn_options = gpu_dawn.Options{
        .from_source = b.option(bool, "dawn-from-source", "Build Dawn from source") orelse false,
    };

    const test_step = b.step("test", "Run library tests");
    test_step.dependOn(&gpu.testStep(b, mode, target, .{ .gpu_dawn_options = gpu_dawn_options }).step);

    const example = b.addExecutable("gpu-hello-triangle", "examples/main.zig");
    example.setBuildMode(mode);
    example.setTarget(target);
    example.addPackage(gpu.pkg);
    example.addPackage(glfw.pkg);
    gpu.link(b, example, .{ .gpu_dawn_options = gpu_dawn_options });
    example.install();

    const example_run_cmd = example.run();
    example_run_cmd.step.dependOn(b.getInstallStep());
    const example_run_step = b.step("run-example", "Run the example");
    example_run_step.dependOn(&example_run_cmd.step);
}