/*
 * Copyright (c) 2022, Florent Castelli <florent.castelli@gmail.com>
 * Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
 * Copyright (c) 2022-2024, Tim Flynn <trflynn89@ladybird.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <AK/ByteString.h>
#include <AK/String.h>
#include <LibGC/MarkedVector.h>
#include <LibGfx/Rect.h>
#include <LibIPC/ConnectionToServer.h>
#include <LibIPC/Transport.h>
#include <LibJS/Forward.h>
#include <LibWeb/Forward.h>
#include <LibWeb/HTML/VisibilityState.h>
#include <LibWeb/WebDriver/ElementLocationStrategies.h>
#include <LibWeb/WebDriver/ExecuteScript.h>
#include <LibWeb/WebDriver/Response.h>
#include <LibWeb/WebDriver/TimeoutsConfiguration.h>
#include <WebContent/Forward.h>
#include <WebContent/WebDriverClientEndpoint.h>
#include <WebContent/WebDriverServerEndpoint.h>

namespace WebContent {

class ElementLocator;

class WebDriverConnection final
    : public IPC::ConnectionToServer<WebDriverClientEndpoint, WebDriverServerEndpoint> {
    C_OBJECT_ABSTRACT(WebDriverConnection)

public:
    static ErrorOr<NonnullRefPtr<WebDriverConnection>> connect(Web::PageClient& page_client, ByteString const& webdriver_ipc_path);
    virtual ~WebDriverConnection() = default;

    void visit_edges(JS::Cell::Visitor&);

    void page_did_open_dialog(Badge<PageClient>);

private:
    WebDriverConnection(IPC::Transport transport, Web::PageClient& page_client);

    virtual void die() override { }

    virtual void close_session() override;
    virtual void set_page_load_strategy(Web::WebDriver::PageLoadStrategy const& page_load_strategy) override;
    virtual void set_unhandled_prompt_behavior(Web::WebDriver::UnhandledPromptBehavior const& unhandled_prompt_behavior) override;
    virtual void set_strict_file_interactability(bool strict_file_interactability) override;
    virtual void set_is_webdriver_active(bool) override;
    virtual Messages::WebDriverClient::GetTimeoutsResponse get_timeouts() override;
    virtual Messages::WebDriverClient::SetTimeoutsResponse set_timeouts(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::NavigateToResponse navigate_to(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::GetCurrentUrlResponse get_current_url() override;
    virtual Messages::WebDriverClient::BackResponse back() override;
    virtual Messages::WebDriverClient::ForwardResponse forward() override;
    virtual Messages::WebDriverClient::RefreshResponse refresh() override;
    virtual Messages::WebDriverClient::GetTitleResponse get_title() override;
    virtual Messages::WebDriverClient::GetWindowHandleResponse get_window_handle() override;
    virtual Messages::WebDriverClient::CloseWindowResponse close_window() override;
    virtual Messages::WebDriverClient::SwitchToWindowResponse switch_to_window(String const& handle) override;
    virtual Messages::WebDriverClient::NewWindowResponse new_window(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::SwitchToFrameResponse switch_to_frame(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::SwitchToParentFrameResponse switch_to_parent_frame(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::GetWindowRectResponse get_window_rect() override;
    virtual Messages::WebDriverClient::SetWindowRectResponse set_window_rect(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::MaximizeWindowResponse maximize_window() override;
    virtual Messages::WebDriverClient::MinimizeWindowResponse minimize_window() override;
    virtual Messages::WebDriverClient::FullscreenWindowResponse fullscreen_window() override;
    virtual Messages::WebDriverClient::ConsumeUserActivationResponse consume_user_activation() override;
    virtual Messages::WebDriverClient::FindElementResponse find_element(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::FindElementsResponse find_elements(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::FindElementFromElementResponse find_element_from_element(JsonValue const& payload, String const& element_id) override;
    virtual Messages::WebDriverClient::FindElementsFromElementResponse find_elements_from_element(JsonValue const& payload, String const& element_id) override;
    virtual Messages::WebDriverClient::FindElementFromShadowRootResponse find_element_from_shadow_root(JsonValue const& payload, String const& shadow_id) override;
    virtual Messages::WebDriverClient::FindElementsFromShadowRootResponse find_elements_from_shadow_root(JsonValue const& payload, String const& shadow_id) override;
    virtual Messages::WebDriverClient::GetActiveElementResponse get_active_element() override;
    virtual Messages::WebDriverClient::GetElementShadowRootResponse get_element_shadow_root(String const& element_id) override;
    virtual Messages::WebDriverClient::IsElementSelectedResponse is_element_selected(String const& element_id) override;
    virtual Messages::WebDriverClient::GetElementAttributeResponse get_element_attribute(String const& element_id, String const& name) override;
    virtual Messages::WebDriverClient::GetElementPropertyResponse get_element_property(String const& element_id, String const& name) override;
    virtual Messages::WebDriverClient::GetElementCssValueResponse get_element_css_value(String const& element_id, String const& name) override;
    virtual Messages::WebDriverClient::GetElementTextResponse get_element_text(String const& element_id) override;
    virtual Messages::WebDriverClient::GetElementTagNameResponse get_element_tag_name(String const& element_id) override;
    virtual Messages::WebDriverClient::GetElementRectResponse get_element_rect(String const& element_id) override;
    virtual Messages::WebDriverClient::IsElementEnabledResponse is_element_enabled(String const& element_id) override;
    virtual Messages::WebDriverClient::GetComputedRoleResponse get_computed_role(String const& element_id) override;
    virtual Messages::WebDriverClient::GetComputedLabelResponse get_computed_label(String const& element_id) override;
    virtual Messages::WebDriverClient::ElementClickResponse element_click(String const& element_id) override;
    virtual Messages::WebDriverClient::ElementClearResponse element_clear(String const& element_id) override;
    virtual Messages::WebDriverClient::ElementSendKeysResponse element_send_keys(String const& element_id, JsonValue const& payload) override;
    virtual Messages::WebDriverClient::GetSourceResponse get_source() override;
    virtual Messages::WebDriverClient::ExecuteScriptResponse execute_script(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::ExecuteAsyncScriptResponse execute_async_script(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::GetAllCookiesResponse get_all_cookies() override;
    virtual Messages::WebDriverClient::GetNamedCookieResponse get_named_cookie(String const& name) override;
    virtual Messages::WebDriverClient::AddCookieResponse add_cookie(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::DeleteCookieResponse delete_cookie(String const& name) override;
    virtual Messages::WebDriverClient::DeleteAllCookiesResponse delete_all_cookies() override;
    virtual Messages::WebDriverClient::PerformActionsResponse perform_actions(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::ReleaseActionsResponse release_actions() override;
    virtual Messages::WebDriverClient::DismissAlertResponse dismiss_alert() override;
    virtual Messages::WebDriverClient::AcceptAlertResponse accept_alert() override;
    virtual Messages::WebDriverClient::GetAlertTextResponse get_alert_text() override;
    virtual Messages::WebDriverClient::SendAlertTextResponse send_alert_text(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::TakeScreenshotResponse take_screenshot() override;
    virtual Messages::WebDriverClient::TakeElementScreenshotResponse take_element_screenshot(String const& element_id) override;
    virtual Messages::WebDriverClient::PrintPageResponse print_page(JsonValue const& payload) override;
    virtual Messages::WebDriverClient::EnsureTopLevelBrowsingContextIsOpenResponse ensure_top_level_browsing_context_is_open() override;

    void set_current_browsing_context(Web::HTML::BrowsingContext&);
    Web::HTML::BrowsingContext& current_browsing_context() { return *m_current_browsing_context; }
    GC::Ptr<Web::HTML::BrowsingContext> current_parent_browsing_context() { return m_current_parent_browsing_context; }

    void set_current_top_level_browsing_context(Web::HTML::BrowsingContext&);
    GC::Ptr<Web::HTML::BrowsingContext> current_top_level_browsing_context() { return m_current_top_level_browsing_context; }

    ErrorOr<void, Web::WebDriver::Error> ensure_current_browsing_context_is_open();
    ErrorOr<void, Web::WebDriver::Error> ensure_current_top_level_browsing_context_is_open();

    Web::WebDriver::Response element_click_impl(String const& element_id);
    Web::WebDriver::Response element_clear_impl(String const& element_id);
    Web::WebDriver::Response element_send_keys_impl(String const& element_id, ByteString const& text);
    Web::WebDriver::Response add_cookie_impl(JsonObject const&);

    void handle_any_user_prompts(Function<void()> on_dialog_closed);

    void maximize_the_window();
    void iconify_the_window(GC::Ref<GC::Function<void()>>);
    void restore_the_window(GC::Ref<GC::Function<void()>>);
    void wait_for_visibility_state(GC::Ref<GC::Function<void()>>, Web::HTML::VisibilityState);

    using OnNavigationComplete = GC::Ref<GC::Function<void(Web::WebDriver::Response)>>;
    void wait_for_navigation_to_complete(OnNavigationComplete);

    Gfx::IntPoint calculate_absolute_position_of_element(GC::Ref<Web::Geometry::DOMRect> rect);
    Gfx::IntRect calculate_absolute_rect_of_element(Web::DOM::Element const& element);

    using GetStartNode = GC::Ref<GC::Function<ErrorOr<GC::Ref<Web::DOM::ParentNode>, Web::WebDriver::Error>()>>;
    using OnFindComplete = GC::Ref<GC::Function<void(Web::WebDriver::Response)>>;
    void find(Web::WebDriver::LocationStrategy, ByteString, GetStartNode, OnFindComplete);

    struct ScriptArguments {
        ByteString script;
        GC::MarkedVector<JS::Value> arguments;
    };
    ErrorOr<ScriptArguments, Web::WebDriver::Error> extract_the_script_arguments_from_a_request(JS::VM&, JsonValue const& payload);
    void handle_script_response(Web::WebDriver::ExecutionResult);

    void delete_cookies(Optional<StringView> const& name = {});

    // https://w3c.github.io/webdriver/#dfn-page-load-strategy
    Web::WebDriver::PageLoadStrategy m_page_load_strategy { Web::WebDriver::PageLoadStrategy::Normal };

    // https://w3c.github.io/webdriver/#dfn-unhandled-prompt-behavior
    Web::WebDriver::UnhandledPromptBehavior m_unhandled_prompt_behavior { Web::WebDriver::UnhandledPromptBehavior::DismissAndNotify };

    // https://w3c.github.io/webdriver/#dfn-strict-file-interactability
    bool m_strict_file_interactability { false };

    // https://w3c.github.io/webdriver/#dfn-session-script-timeout
    Web::WebDriver::TimeoutsConfiguration m_timeouts_configuration;

    // https://w3c.github.io/webdriver/#dfn-current-browsing-context
    GC::Ptr<Web::HTML::BrowsingContext> m_current_browsing_context;

    // https://w3c.github.io/webdriver/#dfn-current-parent-browsing-context
    GC::Ptr<Web::HTML::BrowsingContext> m_current_parent_browsing_context;

    // https://w3c.github.io/webdriver/#dfn-current-top-level-browsing-context
    GC::Ptr<Web::HTML::BrowsingContext> m_current_top_level_browsing_context;

    size_t m_pending_window_rect_requests { 0 };
    bool m_has_pending_script_execution { false };

    friend class ElementLocator;
    GC::Ptr<ElementLocator> m_element_locator;

    GC::Ptr<JS::Cell> m_action_executor;

    GC::Ptr<Web::DOM::DocumentObserver> m_document_observer;
    GC::Ptr<Web::HTML::NavigationObserver> m_navigation_observer;
    GC::Ptr<Web::WebDriver::HeapTimer> m_navigation_timer;
};

}