text: /*
   * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <AK/StringBuilder.h>
  #include <LibJS/Interpreter.h>
  #include <LibJS/Parser.h>
  #include <LibWeb/DOM/Document.h>
  #include <LibWeb/DOM/HTMLScriptElement.h>
  #include <LibWeb/DOM/Text.h>
  #include <LibWeb/ResourceLoader.h>
  
  namespace Web {
  
  HTMLScriptElement::HTMLScriptElement(Document& document, const FlyString& tag_name)
      : HTMLElement(document, tag_name)
  {
  }
  
  HTMLScriptElement::~HTMLScriptElement()
  {
  }
  
  void HTMLScriptElement::children_changed()
  {
      HTMLElement::children_changed();
  
      if (has_attribute("src"))
          return;
  
      StringBuilder builder;
      for_each_child([&](auto& child) {
          if (is<Text>(child))
              builder.append(to<Text>(child).text_content());
      });
      auto source = builder.to_string();
      if (source.is_empty())
          return;
  
      auto parser = JS::Parser(JS::Lexer(source));
      auto program = parser.parse_program();
      if (parser.has_errors()) {
          parser.print_errors();
          return;
      }
      document().interpreter().run(*program);
  }
  
  void HTMLScriptElement::inserted_into(Node& new_parent)
  {
      HTMLElement::inserted_into(new_parent);
  
      auto src = attribute("src");
      if (src.is_null())
          return;
  
      URL src_url = document().complete_url(src);
      if (src_url.protocol() == "file" && document().url().protocol() != src_url.protocol()) {
          dbg() << "HTMLScriptElement: Forbidden to load " << src_url.to_string() << " from " << document().url().to_string();
          return;
      }
  
      String source;
      ResourceLoader::the().load_sync(src_url, [&](auto& data, auto&) {
          if (data.is_null()) {
              dbg() << "HTMLScriptElement: Failed to load " << src;
              return;
          }
          source = String::copy(data);
      });
      if (source.is_empty()) {
          dbg() << "HTMLScriptElement: No source to parse :(";
          return;
      }
  
      auto parser = JS::Parser(JS::Lexer(source));
      auto program = parser.parse_program();
      if (parser.has_errors()) {
          parser.print_errors();
          return;
      }
      document().interpreter().run(*program);
  }
  
  }
  