ladybird/Userland/Services/WebContent/WebContentConsoleClient.cpp

/*
 * Copyright (c) 2021, Brandon Scott <xeon.productions@gmail.com>
 * Copyright (c) 2020, Hunter Salyer <thefalsehonesty@gmail.com>
 * Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#include "WebContentConsoleClient.h"
#include <LibJS/Interpreter.h>
#include <LibJS/MarkupGenerator.h>
#include <LibWeb/HTML/PolicyContainers.h>
#include <LibWeb/HTML/Scripting/ClassicScript.h>
#include <LibWeb/HTML/Scripting/Environments.h>
#include <LibWeb/HTML/Window.h>
#include <WebContent/ConsoleGlobalObject.h>

namespace WebContent {

class ConsoleEnvironmentSettingsObject final : public Web::HTML::EnvironmentSettingsObject {
    JS_CELL(ConsoleEnvironmentSettingsObject, EnvironmentSettingsObject);

public:
    ConsoleEnvironmentSettingsObject(NonnullOwnPtr<JS::ExecutionContext> execution_context)
        : Web::HTML::EnvironmentSettingsObject(move(execution_context))
    {
    }

    virtual ~ConsoleEnvironmentSettingsObject() override = default;

    JS::GCPtr<Web::DOM::Document> responsible_document() override { return nullptr; }
    DeprecatedString api_url_character_encoding() override { return m_api_url_character_encoding; }
    AK::URL api_base_url() override { return m_url; }
    Web::HTML::Origin origin() override { return m_origin; }
    Web::HTML::PolicyContainer policy_container() override { return m_policy_container; }
    Web::HTML::CanUseCrossOriginIsolatedAPIs cross_origin_isolated_capability() override { return Web::HTML::CanUseCrossOriginIsolatedAPIs::Yes; }

private:
    DeprecatedString m_api_url_character_encoding;
    AK::URL m_url;
    Web::HTML::Origin m_origin;
    Web::HTML::PolicyContainer m_policy_container;
};

WebContentConsoleClient::WebContentConsoleClient(JS::Console& console, JS::Realm& realm, ConnectionFromClient& client)
    : ConsoleClient(console)
    , m_client(client)
    , m_realm(realm)
{
    JS::DeferGC defer_gc(realm.heap());

    auto& vm = realm.vm();
    auto& window = static_cast<Web::HTML::Window&>(realm.global_object());

    auto console_execution_context = MUST(JS::Realm::initialize_host_defined_realm(
        vm, [&](JS::Realm& realm) {
            m_console_global_object = vm.heap().allocate_without_realm<ConsoleGlobalObject>(realm, window);
            return m_console_global_object;
        },
        nullptr));

    auto* console_realm = console_execution_context->realm;
    m_console_settings = vm.heap().allocate<ConsoleEnvironmentSettingsObject>(*console_realm, move(console_execution_context));
    auto* intrinsics = vm.heap().allocate<Web::Bindings::Intrinsics>(*console_realm, *console_realm);
    auto host_defined = make<Web::Bindings::HostDefined>(*m_console_settings, *intrinsics);
    console_realm->set_host_defined(move(host_defined));
}

void WebContentConsoleClient::handle_input(DeprecatedString const& js_source)
{
    if (!m_realm)
        return;

    auto script = Web::HTML::ClassicScript::create("(console)", js_source, *m_console_settings, m_console_settings->api_base_url());

    // FIXME: Add parse error printouts back once ClassicScript can report parse errors.

    auto result = script->run();

    if (result.value().has_value()) {
        m_console_global_object->set_most_recent_result(result.value().value());
        print_html(JS::MarkupGenerator::html_from_value(*result.value()).release_value_but_fixme_should_propagate_errors().to_deprecated_string());
    }
}

void WebContentConsoleClient::report_exception(JS::Error const& exception, bool in_promise)
{
    print_html(JS::MarkupGenerator::html_from_error(exception, in_promise).release_value_but_fixme_should_propagate_errors().to_deprecated_string());
}

void WebContentConsoleClient::print_html(DeprecatedString const& line)
{
    m_message_log.append({ .type = ConsoleOutput::Type::HTML, .data = line });
    m_client.async_did_output_js_console_message(m_message_log.size() - 1);
}

void WebContentConsoleClient::clear_output()
{
    m_message_log.append({ .type = ConsoleOutput::Type::Clear, .data = "" });
    m_client.async_did_output_js_console_message(m_message_log.size() - 1);
}

void WebContentConsoleClient::begin_group(DeprecatedString const& label, bool start_expanded)
{
    m_message_log.append({ .type = start_expanded ? ConsoleOutput::Type::BeginGroup : ConsoleOutput::Type::BeginGroupCollapsed, .data = label });
    m_client.async_did_output_js_console_message(m_message_log.size() - 1);
}

void WebContentConsoleClient::end_group()
{
    m_message_log.append({ .type = ConsoleOutput::Type::EndGroup, .data = "" });
    m_client.async_did_output_js_console_message(m_message_log.size() - 1);
}

void WebContentConsoleClient::send_messages(i32 start_index)
{
    // FIXME: Cap the number of messages we send at once?
    auto messages_to_send = m_message_log.size() - start_index;
    if (messages_to_send < 1) {
        // When the console is first created, it requests any messages that happened before
        // then, by requesting with start_index=0. If we don't have any messages at all, that
        // is still a valid request, and we can just ignore it.
        if (start_index != 0)
            m_client.did_misbehave("Requested non-existent console message index.");
        return;
    }

    // FIXME: Replace with a single Vector of message structs
    Vector<DeprecatedString> message_types;
    Vector<DeprecatedString> messages;
    message_types.ensure_capacity(messages_to_send);
    messages.ensure_capacity(messages_to_send);

    for (size_t i = start_index; i < m_message_log.size(); i++) {
        auto& message = m_message_log[i];
        switch (message.type) {
        case ConsoleOutput::Type::HTML:
            message_types.append("html"sv);
            break;
        case ConsoleOutput::Type::Clear:
            message_types.append("clear"sv);
            break;
        case ConsoleOutput::Type::BeginGroup:
            message_types.append("group"sv);
            break;
        case ConsoleOutput::Type::BeginGroupCollapsed:
            message_types.append("groupCollapsed"sv);
            break;
        case ConsoleOutput::Type::EndGroup:
            message_types.append("groupEnd"sv);
            break;
        }

        messages.append(message.data);
    }

    m_client.async_did_get_js_console_messages(start_index, message_types, messages);
}

void WebContentConsoleClient::clear()
{
    clear_output();
}

// 2.3. Printer(logLevel, args[, options]), https://console.spec.whatwg.org/#printer
JS::ThrowCompletionOr<JS::Value> WebContentConsoleClient::printer(JS::Console::LogLevel log_level, PrinterArguments arguments)
{
    auto styling = escape_html_entities(m_current_message_style.string_view());
    m_current_message_style.clear();

    if (log_level == JS::Console::LogLevel::Trace) {
        auto trace = arguments.get<JS::Console::Trace>();
        StringBuilder html;
        if (!trace.label.is_empty())
            html.appendff("<span class='title' style='{}'>{}</span><br>", styling, escape_html_entities(trace.label));

        html.append("<span class='trace'>"sv);
        for (auto& function_name : trace.stack)
            html.appendff("-> {}<br>", escape_html_entities(function_name));
        html.append("</span>"sv);

        print_html(html.string_view());
        return JS::js_undefined();
    }

    if (log_level == JS::Console::LogLevel::Group || log_level == JS::Console::LogLevel::GroupCollapsed) {
        auto group = arguments.get<JS::Console::Group>();
        begin_group(DeprecatedString::formatted("<span style='{}'>{}</span>", styling, escape_html_entities(group.label)), log_level == JS::Console::LogLevel::Group);
        return JS::js_undefined();
    }

    auto output = DeprecatedString::join(' ', arguments.get<JS::MarkedVector<JS::Value>>());
    m_console.output_debug_message(log_level, output);

    StringBuilder html;
    switch (log_level) {
    case JS::Console::LogLevel::Debug:
        html.appendff("<span class=\"debug\" style=\"{}\">(d) "sv, styling);
        break;
    case JS::Console::LogLevel::Error:
        html.appendff("<span class=\"error\" style=\"{}\">(e) "sv, styling);
        break;
    case JS::Console::LogLevel::Info:
        html.appendff("<span class=\"info\" style=\"{}\">(i) "sv, styling);
        break;
    case JS::Console::LogLevel::Log:
        html.appendff("<span class=\"log\" style=\"{}\"> "sv, styling);
        break;
    case JS::Console::LogLevel::Warn:
    case JS::Console::LogLevel::CountReset:
        html.appendff("<span class=\"warn\" style=\"{}\">(w) "sv, styling);
        break;
    default:
        html.appendff("<span style=\"{}\">"sv, styling);
        break;
    }

    html.append(escape_html_entities(output));
    html.append("</span>"sv);
    print_html(html.string_view());
    return JS::js_undefined();
}
}