/*
 * Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <LibWeb/Crypto/Crypto.h>
#include <LibWeb/HTML/BrowsingContext.h>
#include <LibWeb/HTML/DocumentState.h>
#include <LibWeb/HTML/SessionHistoryEntry.h>

namespace Web::HTML {

JS_DEFINE_ALLOCATOR(SessionHistoryEntry);

void SessionHistoryEntry::visit_edges(Cell::Visitor& visitor)
{
    Base::visit_edges(visitor);
    visitor.visit(m_document_state);
    visitor.visit(m_original_source_browsing_context);
}

SessionHistoryEntry::SessionHistoryEntry()
    : m_classic_history_api_state(MUST(structured_serialize_for_storage(vm(), JS::js_null())))
    , m_navigation_api_state(MUST(structured_serialize_for_storage(vm(), JS::js_undefined())))
    , m_navigation_api_key(MUST(Crypto::generate_random_uuid()))
    , m_navigation_api_id(MUST(Crypto::generate_random_uuid()))
{
}

JS::NonnullGCPtr<SessionHistoryEntry> SessionHistoryEntry::clone() const
{
    JS::NonnullGCPtr<SessionHistoryEntry> entry = *heap().allocate_without_realm<SessionHistoryEntry>();
    entry->m_step = m_step;
    entry->m_url = m_url;
    entry->m_document_state = m_document_state->clone();
    entry->m_classic_history_api_state = m_classic_history_api_state;
    entry->m_navigation_api_state = m_navigation_api_state;
    entry->m_navigation_api_key = m_navigation_api_key;
    entry->m_navigation_api_id = m_navigation_api_id;
    entry->m_scroll_restoration_mode = m_scroll_restoration_mode;
    entry->m_policy_container = m_policy_container;
    entry->m_browsing_context_name = m_browsing_context_name;
    entry->m_original_source_browsing_context = m_original_source_browsing_context;
    return entry;
}

// https://html.spec.whatwg.org/multipage/browsing-the-web.html#she-document
JS::GCPtr<DOM::Document> SessionHistoryEntry::document() const
{
    // To get a session history entry's document, return its document state's document.
    if (!m_document_state)
        return {};
    return m_document_state->document();
}

}
