use wgpu::{include_wgsl, BlendState, ColorTargetState, RenderPipeline, RenderPipelineDescriptor, SurfaceConfiguration};

use crate::object;

pub fn new(device: &wgpu::Device, config: &SurfaceConfiguration,camera_bind_group_layout: &wgpu::BindGroupLayout, diffuse_bind_group_layout: &wgpu::BindGroupLayout, visu_bind_group_layout: &wgpu::BindGroupLayout)-> RenderPipeline{

    let wireframe_layout = device.create_pipeline_layout(&wgpu::PipelineLayoutDescriptor{
        label: Some("Wireframe Pipeline Layout"),
        bind_group_layouts: &[
            &camera_bind_group_layout,
            &diffuse_bind_group_layout,
            &visu_bind_group_layout,
        ],
        push_constant_ranges: &[]
    });

    let shader_module = device.create_shader_module(include_wgsl!("../shaders/plane_shader.wgsl"));

    let wireframe_pipeline = device.create_render_pipeline(&RenderPipelineDescriptor{
        label: Some("Wireframe Pipeline"),
        layout: Some(&wireframe_layout),
        vertex: wgpu::VertexState {
            module: &shader_module,
            entry_point: "vs_main".into(),
            buffers: &[
                object::Vertex::desc(),
            ],
        },
        primitive: wgpu::PrimitiveState{
            topology: wgpu::PrimitiveTopology::TriangleList,
            strip_index_format: None,
            front_face: wgpu::FrontFace::Ccw,
            cull_mode: None,
            unclipped_depth: false,
            polygon_mode: wgpu::PolygonMode::Line, //Or wgpu::PolygonMode::Fill
            conservative: false
        },
        depth_stencil: None,
        multisample: wgpu::MultisampleState{
            count: 1,
            mask: !0,
            alpha_to_coverage_enabled: false,
        },
        fragment: Some(wgpu::FragmentState{
            module: &shader_module,
            entry_point: "fs_main",
            targets: &[Some(ColorTargetState{
                format: config.format,
                blend: Some(BlendState::REPLACE),
                write_mask: wgpu::ColorWrites::ALL
            })]
        }),
        multiview: None
    });
    return  wireframe_pipeline
}