const std = @import("std");

pub fn build(b: *std.Build) void {
    const zaudio = b.dependency("zaudio", .{});
    const zglfw = b.dependency("zglfw", .{});
    const zgpu = b.dependency("zgpu", .{});
    const zgui = b.dependency("zgui", .{
        .shared = false,
        .backend = .glfw_wgpu,
        .with_implot = true,
    });
    const zmath = b.dependency("zmath", .{});
    const znoise = b.dependency("znoise", .{});
    const zpool = b.dependency("zpool", .{});
    const zstbi = b.dependency("zstbi", .{});
    const ztracy = b.dependency("ztracy", .{
        .enable_ztracy = b.option(bool, "tracy", "Enable Tracy profile markers") orelse false,
        .enable_fibers = b.option(bool, "tracy_fibers", "Enable Tracy fiber support") orelse false,
        .on_demand = b.option(bool, "tracy_on_demand", "Build Tracy with TRACY_ON_DEMAND") orelse false,
    });

    const target = b.standardTargetOptions(.{});
    const optimize = b.standardOptimizeOption(.{});
    const pipeline_debug = b.option(bool, "pipeline_debug", "Build asset pipeline in debug mode") orelse false;

    const pipeline_mod = b.createModule(.{
        .root_source_file = b.path("pipeline/main.zig"),
        .target = b.graph.host,
        .optimize = if (pipeline_debug) .Debug else .ReleaseSafe,
    });

    pipeline_mod.addImport("zstbi", zstbi.module("root"));

    const pipeline = b.addExecutable(.{
        .name = "pipeline",
        .root_module = pipeline_mod,
    });

    pipeline.linkLibrary(zstbi.artifact("zstbi"));

    const pipeline_cmd = b.addRunArtifact(pipeline);
    pipeline_cmd.setCwd(b.path("."));

    const pipeline_step = b.step("pipeline", "Run the asset pipeline");
    pipeline_step.dependOn(&pipeline_cmd.step);

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

    exe_mod.addImport("zaudio", zaudio.module("root"));
    exe_mod.addImport("zglfw", zglfw.module("root"));
    exe_mod.addImport("zgpu", zgpu.module("root"));
    exe_mod.addImport("zgui", zgui.module("root"));
    exe_mod.addImport("zmath", zmath.module("root"));
    exe_mod.addImport("znoise", znoise.module("root"));
    exe_mod.addImport("zpool", zpool.module("root"));
    exe_mod.addImport("zstbi", zstbi.module("root"));
    exe_mod.addImport("ztracy", ztracy.module("root"));

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

    exe.linkLibrary(zaudio.artifact("miniaudio"));
    exe.linkLibrary(zgui.artifact("imgui"));
    exe.linkLibrary(znoise.artifact("FastNoiseLite"));
    exe.linkLibrary(zstbi.artifact("zstbi"));
    exe.linkLibrary(ztracy.artifact("tracy"));
    if (target.result.os.tag != .emscripten) {
        exe.linkLibrary(zglfw.artifact("glfw"));
        exe.linkLibrary(zgpu.artifact("zdawn"));
    }

    if (optimize != .Debug) {
        exe.subsystem = .Windows;
    }

    @import("zgpu").addLibraryPathsTo(exe);

    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);
}