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use crate::{utils, ProgramLinkBuilder, ProgramLinkJs, StringArray};

use std::ops::{Deref, DerefMut};
use wasm_bindgen::prelude::wasm_bindgen;

pub type ProgramLinkBuilderJsInner = ProgramLinkBuilder<String, String, String>;

#[wasm_bindgen(inspectable, js_name = ProgramLinkBuilder)]
pub struct ProgramLinkJsBuilder(ProgramLinkBuilderJsInner);

#[wasm_bindgen(js_class = ProgramLinkBuilder)]
impl ProgramLinkJsBuilder {
    pub fn default() -> Self {
        Self(ProgramLinkBuilderJsInner::default())
    }

    #[wasm_bindgen(constructor)]
    pub fn new() -> Self {
        Self::default()
    }

    #[wasm_bindgen(js_name = setProgramId)]
    pub fn set_program_id(&mut self, program_id: String) {
        self.deref_mut().set_program_id(program_id);
    }

    #[wasm_bindgen(js_name = setVertexShaderId)]
    pub fn set_vertex_shader_id(&mut self, vertex_shader_id: String) {
        self.deref_mut().set_vertex_shader_id(vertex_shader_id);
    }

    #[wasm_bindgen(js_name = setFragmentShaderId)]
    pub fn set_fragment_shader_id(&mut self, fragment_shader_id: String) {
        self.deref_mut().set_fragment_shader_id(fragment_shader_id);
    }

    #[wasm_bindgen(js_name = setTransformFeedbackVaryings)]
    pub fn set_transform_feedback_varyings(&mut self, transform_feedback_varyings: StringArray) {
        let transform_feedback_varyings =
            utils::js_array_to_vec_strings(&transform_feedback_varyings);
        self.deref_mut()
            .set_transform_feedback_varyings(transform_feedback_varyings);
    }

    pub fn build(self) -> Result<ProgramLinkJs, String> {
        self.0
            .build()
            .map(Into::into)
            .map_err(|err| err.to_string())
    }
}

impl Deref for ProgramLinkJsBuilder {
    type Target = ProgramLinkBuilderJsInner;

    fn deref(&self) -> &Self::Target {
        &self.0
    }
}

impl DerefMut for ProgramLinkJsBuilder {
    fn deref_mut(&mut self) -> &mut ProgramLinkBuilderJsInner {
        &mut self.0
    }
}

impl From<ProgramLinkBuilder<String, String, String>> for ProgramLinkJsBuilder {
    fn from(program_link: ProgramLinkBuilder<String, String, String>) -> Self {
        Self(program_link)
    }
}