// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
use std::fmt::Display;
use std::fmt::{self};

use serde::de;
use serde::ser;

pub type Result<T> = std::result::Result<T, Error>;

#[derive(Clone, Debug, Eq, PartialEq)]
#[non_exhaustive]
pub enum Error {
  Message(String),

  ExpectedBoolean,
  ExpectedInteger,
  ExpectedNumber,
  ExpectedString,
  ExpectedArray,
  ExpectedMap,
  ExpectedEnum,
  ExpectedObject,
  ExpectedBuffer,
  ExpectedDetachable,
  ExpectedExternal,
  ExpectedBigInt,

  ExpectedUtf8,
  ExpectedLatin1,

  UnsupportedType,
  LengthMismatch,
}

impl ser::Error for Error {
  fn custom<T: Display>(msg: T) -> Self {
    Error::Message(msg.to_string())
  }
}

impl de::Error for Error {
  fn custom<T: Display>(msg: T) -> Self {
    Error::Message(msg.to_string())
  }
}

impl Display for Error {
  fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
    match self {
      Error::Message(msg) => formatter.write_str(msg),
      err => formatter.write_str(format!("serde_v8 error: {err:?}").as_ref()),
    }
  }
}

impl std::error::Error for Error {}