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use super::{add_alias, ToTypeDef, TypeDef};
use crate::{js_doc_from_comments, NapiEnum, NapiEnumValue};

impl ToTypeDef for NapiEnum {
  fn to_type_def(&self) -> Option<TypeDef> {
    if self.skip_typescript {
      return None;
    }

    add_alias(self.name.to_string(), self.js_name.to_string());

    Some(TypeDef {
      kind: "enum".to_owned(),
      name: self.js_name.to_owned(),
      original_name: Some(self.name.to_string()),
      def: self.gen_ts_variants(),
      js_doc: js_doc_from_comments(&self.comments),
      js_mod: self.js_mod.to_owned(),
    })
  }
}

impl NapiEnum {
  fn gen_ts_variants(&self) -> String {
    self
      .variants
      .iter()
      .map(|v| {
        let val = match &v.val {
          NapiEnumValue::Number(num) => format!("{}", num),
          NapiEnumValue::String(string) => format!("'{}'", string),
        };
        format!("{}{} = {}", js_doc_from_comments(&v.comments), v.name, val)
      })
      .collect::<Vec<_>>()
      .join(",\n ")
  }
}