use crate::model;

pub fn load_stl(path: std::path::PathBuf) -> model::Model {
    let name = path.file_name().map(|v| v.to_string_lossy().to_string());

    let mut file = std::fs::File::open(path).unwrap();
    let stl = stl::read_stl(&mut file).unwrap();

    let mut vertices = Vec::new();
    let mut indices = Vec::new();

    for tri in stl.triangles.iter() {
        indices.push(vertices.len() as u32);
        vertices.push(model::BasicVertex {
            position: tri.v1.into(),
        });
        indices.push(vertices.len() as u32);
        vertices.push(model::BasicVertex {
            position: tri.v2.into(),
        });
        indices.push(vertices.len() as u32);
        vertices.push(model::BasicVertex {
            position: tri.v3.into(),
        });
    }

    model::Model {
        name: name.clone(),
        objects: vec![model::Object {
            name,
            mesh: model::Mesh {
                transform: Default::default(),
                data: model::MeshData { vertices, indices },
            },
            children: vec![],
        }],
    }
}