const std = @import("std");

const cimgui = @import("cimgui");
const sokol = @import("sokol");

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

    const cimgui_conf = cimgui.getConfig(false);

    const exe_mod = b.createModule(.{
        .root_source_file = b.path("src/main.zig"),
        .target = target,
        .optimize = optimize,
    });

    const cimgui_dep = b.dependency("cimgui", .{
        .target = target,
        .optimize = optimize,
    });

    const sokol_dep = b.dependency("sokol", .{
        .target = target,
        .optimize = optimize,
        .with_sokol_imgui = true,
    });
    sokol_dep.artifact("sokol_clib").addIncludePath(cimgui_dep.path(cimgui_conf.include_dir));

    const sokol_mod = sokol_dep.module("sokol");
    const shdc_dep = sokol_dep.builder.dependency("shdc", .{});

    const shader_mod = try sokol.shdc.createModule(b, "shader", sokol_mod, .{
        .shdc_dep = shdc_dep,
        .input = "src/shader.glsl",
        .output = "shader.zig",
        .slang = .{
            .glsl430 = true,
            .hlsl5 = true,
            .metal_macos = true,
        },
    });

    exe_mod.addImport("cimgui", cimgui_dep.module(cimgui_conf.module_name));
    exe_mod.addImport("shader", shader_mod);
    exe_mod.addImport("sokol", sokol_mod);

    const exe = b.addExecutable(.{
        .name = "voxel-game",
        .root_module = exe_mod,
    });

    b.installArtifact(exe);

    const run_cmd = b.addRunArtifact(exe);
    run_cmd.step.dependOn(b.getInstallStep());
    if (b.args) |args| {
        run_cmd.addArgs(args);
    }

    const run_step = b.step("run", "Run the game");
    run_step.dependOn(&run_cmd.step);
}