// Headless GPU implementation - functional stubs for testing
// Workspace: demo (shared across all workspaces)

#if defined(DEMO_HEADLESS)

#include "gpu.h"
#include "platform/stub_types.h"
#include <stdio.h>

static bool g_initialized = false;

GpuBuffer gpu_create_buffer(WGPUDevice device, size_t size, uint32_t usage,
                            const void* data) {
  (void)device;
  (void)size;
  (void)usage;
  (void)data;
  return {nullptr, 0};
}

RenderPass gpu_create_render_pass(WGPUDevice device, WGPUTextureFormat format,
                                  const char* shader_code,
                                  ResourceBinding* bindings, int num_bindings) {
  (void)device;
  (void)format;
  (void)shader_code;
  (void)bindings;
  (void)num_bindings;
  return {nullptr, nullptr, 0, 0};
}

ComputePass gpu_create_compute_pass(WGPUDevice device, const char* shader_code,
                                    ResourceBinding* bindings,
                                    int num_bindings) {
  (void)device;
  (void)shader_code;
  (void)bindings;
  (void)num_bindings;
  return {nullptr, nullptr, 0, 0, 0};
}

void gpu_init(PlatformState* platform_state) {
  (void)platform_state;
  if (!g_initialized) {
    printf("[headless] GPU initialized\n");
    g_initialized = true;
  }
}

void gpu_draw(float audio_peak, float aspect_ratio, float time, float beat) {
  (void)audio_peak;
  (void)aspect_ratio;
  (void)time;
  (void)beat;
}

void gpu_resize(int width, int height) {
  (void)width;
  (void)height;
}

void gpu_shutdown() {
  if (g_initialized) {
    printf("[headless] GPU shutdown\n");
    g_initialized = false;
  }
}

const GpuContext* gpu_get_context() {
  static GpuContext ctx = {nullptr, nullptr, WGPUTextureFormat_BGRA8Unorm};
  return &ctx;
}

MainSequence* gpu_get_main_sequence() {
  return nullptr;
}

#if !defined(STRIP_ALL)
void gpu_simulate_until(float time, float bpm) {
  (void)time;
  (void)bpm;
}

void gpu_add_custom_effect(Effect* effect, float start_time, float end_time,
                           int priority) {
  (void)effect;
  (void)start_time;
  (void)end_time;
  (void)priority;
}
#endif

#endif // DEMO_HEADLESS