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/*
 * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include <LibWeb/DOM/Document.h>
#include <LibWeb/HTML/History.h>

namespace Web::HTML {

History::History(DOM::Document& document)
    : m_associated_document(document)
{
}

History::~History()
{
}

// https://html.spec.whatwg.org/multipage/history.html#dom-history-pushstate
DOM::ExceptionOr<void> History::push_state(JS::Value data, String const&, String const& url)
{
    // NOTE: The second parameter of this function is intentionally unused.
    return shared_history_push_replace_state(data, url, IsPush::Yes);
}

// https://html.spec.whatwg.org/multipage/history.html#dom-history-replacestate
DOM::ExceptionOr<void> History::replace_state(JS::Value data, String const&, String const& url)
{
    // NOTE: The second parameter of this function is intentionally unused.
    return shared_history_push_replace_state(data, url, IsPush::No);
}

// https://html.spec.whatwg.org/multipage/history.html#shared-history-push/replace-state-steps
DOM::ExceptionOr<void> History::shared_history_push_replace_state(JS::Value, String const&, IsPush)
{
    // 1. Let document be history's associated Document. (NOTE: Not necessary)

    // 2. If document is not fully active, then throw a "SecurityError" DOMException.
    if (!m_associated_document.is_fully_active())
        return DOM::SecurityError::create("Cannot perform pushState or replaceState on a document that isn't fully active.");

    // 3. Optionally, return. (For example, the user agent might disallow calls to these methods that are invoked on a timer,
    //    or from event listeners that are not triggered in response to a clear user action, or that are invoked in rapid succession.)
    dbgln("FIXME: Implement shared_history_push_replace_state.");
    return {};

    // FIXME: Add the rest of the spec steps once they're added.
}

}