const std = @import("std");
const Sdk = @import("lib/SDL.zig/build.zig");

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 release options allow the person running `zig build` to select
    // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall.
    const optimize = b.standardOptimizeOption(.{});

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

    const sdk = Sdk.init(b, null);
    sdk.link(exe, .dynamic);
    exe.linkSystemLibrary("sdl2_ttf");
    exe.linkSystemLibrary("sdl2_image");
    exe.linkSystemLibrary("gl");
    exe.linkSystemLibrary("epoxy");

    const relative = std.Build.FileSource.relative;
    exe.addModule("zgl", b.createModule(.{ .source_file = relative("lib/zgl/zgl.zig") }));
    exe.addModule("zlm", b.createModule(.{ .source_file = relative("lib/zlm/zlm.zig") }));
    exe.addModule("sdl2", sdk.getWrapperModule());

    b.installArtifact(exe);

    const run_cmd = b.addRunArtifact(exe);
    run_cmd.step.dependOn(b.getInstallStep());

    // Allow the user to pass arguments to the applecation
    if (b.args) |args| {
        run_cmd.addArgs(args);
    }

    // Create the build step
    const run_step = b.step("run", "Run the app");
    run_step.dependOn(&run_cmd.step);
}