const std = @import("std");
const Module = std.Build.Module;

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

    var lib: *Module = undefined;
    {
        lib = b.createModule(.{
            .root_source_file = b.path("src/root.zig"),
            .target = target,
            .optimize = optimize,
        });

        const unit_tests = b.addTest(.{
            .root_source_file = b.path("src/root.zig"),
            .target = target,
            .optimize = optimize,
        });

        const run_unit_tests = b.addRunArtifact(unit_tests);
        const test_step = b.step("test", "Run unit tests");
        test_step.dependOn(&run_unit_tests.step);
    }

    {
        const raylib_dep = b.dependency("raylib-zig", .{
            .target = target,
            .optimize = optimize,
        });

        const exe = b.addExecutable(.{
            .name = "daq-view",
            .root_source_file = b.path("src/main.zig"),
            .target = target,
            .optimize = optimize,
        });

        exe.linkLibrary(raylib_dep.artifact("raylib"));
        exe.root_module.addImport("raylib", raylib_dep.module("raylib"));

        const external_compiler_support_dir = try std.process.getEnvVarOwned(b.allocator, "NIEXTCCOMPILERSUPP");
        exe.addSystemIncludePath(.{ .cwd_relative = try std.fs.path.join(b.allocator, &.{ external_compiler_support_dir, "include" }) });

        const lib_folder_name = if (target.result.ptrBitWidth() == 64) "lib64" else "lib32";
        exe.addLibraryPath(.{ .cwd_relative = try std.fs.path.join(b.allocator, &.{ external_compiler_support_dir, lib_folder_name, "msvc" }) });

        exe.linkSystemLibrary("nidaqmx");

        if (target.result.os.tag == .windows) {
            exe.subsystem = if (optimize == .Debug) .Console else .Windows;
        }

        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 program");
        run_step.dependOn(&run_cmd.step);
    }
}