/*

 * Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>

 *

 * SPDX-License-Identifier: BSD-2-Clause

 */

#pragma once

#include <LibWeb/DOM/Comment.h>

#include <LibWeb/DOM/Document.h>

#include <LibWeb/DOM/ElementFactory.h>

#include <LibWeb/DOM/Node.h>

#include <LibWeb/DOM/Text.h>

#include <LibWeb/Namespace.h>

#include <LibXML/Parser/Parser.h>

namespace Web {

enum class XMLScriptingSupport {

    Disabled,

    Enabled,

};

ErrorOr<Variant<ByteString, Vector<XML::MarkupDeclaration>>> resolve_xml_resource(XML::SystemID const&, Optional<XML::PublicID> const&);

class XMLDocumentBuilder final : public XML::Listener {

public:

    XMLDocumentBuilder(DOM::Document& document, XMLScriptingSupport = XMLScriptingSupport::Enabled);

    bool has_error() const { return m_has_error; }

private:

    virtual void set_source(ByteString) override;

    virtual void set_doctype(XML::Doctype) override;

    virtual void element_start(XML::Name const& name, HashMap<XML::Name, ByteString> const& attributes) override;

    virtual void element_end(XML::Name const& name) override;

    virtual void text(StringView data) override;

    virtual void comment(StringView data) override;

    virtual void document_end() override;

    JS::NonnullGCPtr<DOM::Document> m_document;

    JS::GCPtr<DOM::Node> m_current_node;

    XMLScriptingSupport m_scripting_support { XMLScriptingSupport::Enabled };

    bool m_has_error { false };

    StringBuilder text_builder;

    Optional<FlyString> m_namespace;

    struct NamespaceStackEntry {

        Optional<FlyString> ns;

        size_t depth;

    };

    Vector<NamespaceStackEntry, 2> m_namespace_stack;

};

}