// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.

use deno_core::error::AnyError;
use deno_core::op;
use deno_core::OpState;
use deno_core::Resource;
use deno_core::ResourceId;
use std::borrow::Cow;

use super::error::WebGpuResult;

pub(crate) struct WebGpuShaderModule(pub(crate) wgpu_core::id::ShaderModuleId);
impl Resource for WebGpuShaderModule {
  fn name(&self) -> Cow<str> {
    "webGPUShaderModule".into()
  }
}

#[op]
pub fn op_webgpu_create_shader_module(
  state: &mut OpState,
  device_rid: ResourceId,
  label: Option<String>,
  code: String,
) -> Result<WebGpuResult, AnyError> {
  let instance = state.borrow::<super::Instance>();
  let device_resource = state
    .resource_table
    .get::<super::WebGpuDevice>(device_rid)?;
  let device = device_resource.0;

  let source = wgpu_core::pipeline::ShaderModuleSource::Wgsl(Cow::from(code));

  let descriptor = wgpu_core::pipeline::ShaderModuleDescriptor {
    label: label.map(Cow::from),
    shader_bound_checks: wgpu_types::ShaderBoundChecks::default(),
  };

  gfx_put!(device => instance.device_create_shader_module(
    device,
    &descriptor,
    source,
    ()
  ) => state, WebGpuShaderModule)
}