// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.

use deno_core::error::AnyError;
use deno_core::include_js_files;
use deno_core::Extension;
use std::fmt;
use std::path::PathBuf;

/// Load and execute the javascript code.
pub fn init() -> Extension {
  Extension::builder()
    .js(include_js_files!(
      prefix "deno:extensions/web",
      "00_infra.js",
      "01_dom_exception.js",
      "01_mimesniff.js",
      "02_event.js",
      "03_abort_signal.js",
      "04_global_interfaces.js",
      "08_text_encoding.js",
      "12_location.js",
    ))
    .build()
}

pub fn get_declaration() -> PathBuf {
  PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("lib.deno_web.d.ts")
}

#[derive(Debug)]
pub struct DomExceptionQuotaExceededError {
  pub msg: String,
}

impl DomExceptionQuotaExceededError {
  pub fn new(msg: &str) -> Self {
    DomExceptionQuotaExceededError {
      msg: msg.to_string(),
    }
  }
}

impl fmt::Display for DomExceptionQuotaExceededError {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    f.pad(&self.msg)
  }
}

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

pub fn get_quota_exceeded_error_class_name(
  e: &AnyError,
) -> Option<&'static str> {
  e.downcast_ref::<DomExceptionQuotaExceededError>()
    .map(|_| "DOMExceptionQuotaExceededError")
}