const std = @import("std");

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

    const vk_dep = b.dependency("vk", .{});
    const volk_dep = b.dependency("volk", .{});

    const volk_h = b.addTranslateC(.{
        .target = target,
        .optimize = optimize,
        .root_source_file = volk_dep.path("volk.h"),
        .link_libc = true,
    });

    const volk = b.addModule("volk", .{
        .target = target,
        .optimize = optimize,
        .root_source_file = volk_h.getOutput(),
        .link_libc = true,
    });
    volk.addIncludePath(vk_dep.path("include"));
    volk.addCSourceFile(.{ .file = volk_dep.path("volk.c"), .language = .c });

    const vulkan = b.addModule("vulkan", .{
        .target = target,
        .optimize = optimize,
        .root_source_file = b.path("vk/root.zig"),
        .imports = &.{
            .{ .name = "volk", .module = volk },
        },
    });

    const exe = b.addExecutable(.{
        .name = "main",
        .root_module = b.createModule(.{
            .root_source_file = b.path("src/main.zig"),
            .target = target,
            .optimize = optimize,
            .imports = &.{
                .{ .name = "vk", .module = vulkan },
            },
        }),
    });

    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);
}