const std = @import("std");

// Although this function looks imperative, note that its job is to

// declaratively construct a build graph that will be executed by an external

// runner.

pub fn build(b: *std.Build) void {

// Standard target options allows the person running `zig build` to choose

// what target to build for. Here we do not override the defaults, which

// means any target is allowed, and the default is native. Other options

// for restricting supported target set are available.

const target = b.standardTargetOptions(.{});

// Standard optimization options allow the person running `zig build` to select

// between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not

// set a preferred release mode, allowing the user to decide how to optimize.

const optimize = b.standardOptimizeOption(.{});

const exe = b.addExecutable(.{

.name = "mysim",

.root_source_file = b.path("src/main.zig"),

.target = target,

.optimize = optimize,

});

// C headers

exe.linkLibC();

exe.linkLibCpp();

exe.addIncludePath(.{ .path = "./library" });

// Modules

const raylib_dep = b.dependency("raylib-zig", .{

.target = target,

.optimize = optimize,

});

const raylib = raylib_dep.module("raylib"); // main raylib module

const raylib_math = raylib_dep.module("raylib-math"); // raymath module

// const raylib_gui = raylib_dep.module("raylib-gui"); // raylib gui

const rlgl = raylib_dep.module("rlgl"); // rlgl module

const raylib_artifact = raylib_dep.artifact("raylib"); // raylib C library

exe.linkLibrary(raylib_artifact);

exe.root_module.addImport("raylib", raylib);

exe.root_module.addImport("raylib-math", raylib_math);

// exe.root_module.addImport("raylib-gui", raylib_gui);

exe.root_module.addImport("rlgl", rlgl);

const clap_dep = b.dependency("clap", .{

.target = target,

.optimize = optimize,

});

const clap = clap_dep.module("clap"); // main clap module

exe.root_module.addImport("clap", clap);

// This declares intent for the executable to be installed into the

// standard location when the user invokes the "install" step (the default

// step when running `zig build`).

b.installArtifact(exe);

// This *creates* a Run step in the build graph, to be executed when another

// step is evaluated that depends on it. The next line below will establish

// such a dependency.

const run_cmd = b.addRunArtifact(exe);

// By making the run step depend on the install step, it will be run from the

// installation directory rather than directly from within the cache directory.

// This is not necessary, however, if the application depends on other installed

// files, this ensures they will be present and in the expected location.

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

// This allows the user to pass arguments to the application in the build

// command itself, like this: `zig build run -- arg1 arg2 etc`

if (b.args) |args| {

run_cmd.addArgs(args);

}

// This creates a build step. It will be visible in the `zig build --help` menu,

// and can be selected like this: `zig build run`

// This will evaluate the `run` step rather than the default, which is "install".

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

run_step.dependOn(&run_cmd.step);

const exe_unit_tests = b.addTest(.{

.root_source_file = b.path("src/main.zig"),

.target = target,

.optimize = optimize,

});

exe_unit_tests.linkLibC();

exe_unit_tests.linkLibCpp();

exe_unit_tests.addIncludePath(.{ .path = "./library" });

exe_unit_tests.root_module.addImport("raylib", raylib);

exe_unit_tests.root_module.addImport("raylib-math", raylib_math);

// exe.root_module.addImport("raylib-gui", raylib_gui);

exe_unit_tests.root_module.addImport("rlgl", rlgl);

const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);

// Similar to creating the run step earlier, this exposes a `test` step to

// the `zig build --help` menu, providing a way for the user to request

// running the unit tests.

const test_step = b.step("test", "Run unit tests");

test_step.dependOn(&run_exe_unit_tests.step);

}