pub export fn startup(p_allocator: *anyopaque, p_a: ?*anyopaque) bool {
    const allocator = core.modulePreamble(p_allocator, p_a) catch return false;
    _ = allocator;
    imgui.setupFromModule();
    platform.setupFromModule();
    // TODO backlog.setupFromModule

    start_module(core.startup_getArgs(p_a.?)) catch return false;

    return true;
}

pub export fn add(a: i32, b: i32) i32 {
    return a + b;
}

pub export fn subtract(a: i32, b: i32) i32 {
    return a + b;
}

var gAllocator: std.mem.Allocator = undefined;

pub fn log(comptime fmt: []const u8, args: anytype) void {
    core.engine_log("[ExternGame]: " ++ fmt, args);
}

fn start_module(args: core.ModuleLoaderArgs) !void {
    if (args.firstLoad) {
        _ = core.createObject(ExternGameObject, .{}) catch {};
        return;
    }

    log("extern game reloaded ", .{});
    log("hello mother fucker", .{});
    log("accessing old object at {x} same object? {d}", .{ @intFromPtr(core.EngineObject(ExternGameObject).get()), @sizeOf(ExternGameObject) });

    log("gonna try something dumb- lets patch the vtable of that old object with my vtable's values", .{});
    const ref = core.getEngineObjectRef(ExternGameObject).?;

    ref.vtable.tick_func = ExternGameObject.NeonObjectTable.tick_func;
}

pub const ExternGameObject = struct {
    pub var NeonObjectTable = core.EngineObjectVTable.from(@This(), "game.ExternGameObject");

    allocator: std.mem.Allocator,

    pub fn create(allocator: std.mem.Allocator) !*@This() {
        const self = try allocator.create(@This());
        self.* = .{ .allocator = allocator };

        return self;
    }

    pub fn tick(self: *@This(), dt: f64) void {
        _ = dt;
        _ = self;
        const rctx = rend.context();
        imgui.utils.structDebugWindow(rctx);

        // if (ig.begin("external game object", null, .{})) {
        //     ig.textf("sup", .{});

        //     _ = ig.sliderFloat("skybox strength", &rctx.skyboxSystem.brightnessFactor, 0, 10, null, .{});

        //     if (rctx.activeCamera) |camera| {
        //         const forwardVector = camera.forward();
        //         ig.textf("forward vector x:{d} y:{d} z:{d}", .{ forwardVector.x, forwardVector.y, forwardVector.z });
        //     }
        // }
        // ig.end();

        // if (ig.begin("list of textures", null, .{})) {
        //     var iterator = rctx.textureList.map.iterator();
        //     while (iterator.next()) |i| {
        //         ig.textf("{s}", .{i.value_ptr.*.name.utf8()});
        //     }
        // }
        // ig.end();

        // if (ig.begin("list of meshes", null, .{})) {
        //     ig.textf("number of meshes: {d}", .{rctx.meshPool.installedMeshes.count()});
        //     var iterator = rctx.meshPool.installedMeshes.iterator();
        //     while (iterator.next()) |i| {
        //         ig.textf("{s}", .{i.value_ptr.*.name.utf8()});
        //     }
        // }
        // ig.end();
    }

    pub fn destroy(self: *@This()) void {
        self.allocator.destroy(self);
    }
};

pub export fn shutdown() void {}

const std = @import("std");
const backlog = @import("backlog");
const core = backlog.core;
const imgui = backlog.imgui;
const rend = backlog.rend;
const ig = imgui.api;
const platform = backlog.platform;