// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef ASH_USER_EDUCATION_USER_EDUCATION_UTIL_H_
#define ASH_USER_EDUCATION_USER_EDUCATION_UTIL_H_

#include <optional>
#include <string>
#include <utility>

#include "ash/ash_export.h"
#include "base/values.h"
#include "components/user_education/common/help_bubble/help_bubble_params.h"
#include "components/user_manager/user_type.h"
#include "ui/base/interaction/element_tracker.h"
#include "ui/base/mojom/ui_base_types.mojom-shared.h"
#include "ui/base/ui_base_types.h"

class AccountId;
class PrefService;

namespace gfx {
struct VectorIcon;
}  // namespace gfx

namespace ui {
class ElementIdentifier;
}  // namespace ui

namespace views {
class View;
}  // namespace views

namespace ash {

enum class HelpBubbleId;
enum class TimeBucket;
enum class TutorialId;
struct UserSession;

namespace user_education_util {

// Returns extended properties for a help bubble having set `body_icon`.
// NOTE: `body_icon` must have static storage duration.
ASH_EXPORT user_education::HelpBubbleParams::ExtendedProperties
CreateExtendedProperties(const gfx::VectorIcon& body_icon);

// Returns extended properties for a help bubble having set `help_bubble_id`.
ASH_EXPORT user_education::HelpBubbleParams::ExtendedProperties
CreateExtendedProperties(HelpBubbleId help_bubble_id);

// Returns extended properties for a help bubble having set `modal_type`.
ASH_EXPORT user_education::HelpBubbleParams::ExtendedProperties
CreateExtendedProperties(ui::mojom::ModalType modal_type);

// Returns extended properties for a help bubble having set `accessible_name`.
ASH_EXPORT user_education::HelpBubbleParams::ExtendedProperties
CreateExtendedPropertiesWithAccessibleName(const std::string& accessible_name);

// Returns extended properties for a help bubble having set `body_text`.
ASH_EXPORT user_education::HelpBubbleParams::ExtendedProperties
CreateExtendedPropertiesWithBodyText(const std::string& body_text);

/*
Creates an extended properties instance by merging `properties`.

Example usage:
const user_education::HelpBubbleParams::ExtendedProperties
      extended_properties = CreateExtendedProperties(
          CreateExtendedProperties(HelpBubbleId::kTest),
          CreateExtendedProperties(ui::mojom::ModalType::kSystem));
*/
template <typename... Properties>
ASH_EXPORT user_education::HelpBubbleParams::ExtendedProperties
CreateExtendedProperties(Properties&&... properties) {
  user_education::HelpBubbleParams::ExtendedProperties extended_properties;
  base::Value::Dict& values = extended_properties.values();
  ([&] { values.Merge(std::move(properties.values())); }(), ...);
  return extended_properties;
}

// Returns the `AccountId` for the specified `user_session`. If the specified
// `user_session` is `nullptr`, `EmptyAccountId()` is returned.
ASH_EXPORT const AccountId& GetAccountId(const UserSession* user_session);

// Returns help bubble accessible name from the specified `extended_properties`.
// If the specified `extended_properties` does not contain help bubble
// accessible name, an absent value is returned.
ASH_EXPORT std::optional<std::string> GetHelpBubbleAccessibleName(
    const user_education::HelpBubbleParams::ExtendedProperties&
        extended_properties);

// Returns help bubble body icon from the specified `external_properties`. If
// the specified `external_properties` does not contain a help bubble body icon,
// an absent value is returned.
ASH_EXPORT std::optional<std::reference_wrapper<const gfx::VectorIcon>>
GetHelpBubbleBodyIcon(
    const user_education::HelpBubbleParams::ExtendedProperties&
        extended_properties);

// Returns help bubble body text from the specified `extended_properties`.
// If the specified `extended_properties` does not contain help bubble
// body text, an absent value is returned.
ASH_EXPORT std::optional<std::string> GetHelpBubbleBodyText(
    const user_education::HelpBubbleParams::ExtendedProperties&
        extended_properties);

// Returns help bubble ID from the specified `extended_properties`.
ASH_EXPORT HelpBubbleId GetHelpBubbleId(
    const user_education::HelpBubbleParams::ExtendedProperties&
        extended_properties);

// Returns modal type from the specified `extended_properties`.
ASH_EXPORT ui::mojom::ModalType GetHelpBubbleModalType(
    const user_education::HelpBubbleParams::ExtendedProperties&
        extended_properties);

// Returns the last active user pref service. Could be nullptr in tests.
ASH_EXPORT PrefService* GetLastActiveUserPrefService();

// Returns a matching view for the specified `element_id` in the root window
// associated with the specified `display_id`, or `nullptr` if no match is
// found. Note that if multiple matches exist, this method does *not* guarantee
// which will be returned.
ASH_EXPORT views::View* GetMatchingViewInRootWindow(
    int64_t display_id,
    ui::ElementIdentifier element_id);

// Gets the appropriate `TimeBucket` for a given `time_delta`.
ASH_EXPORT TimeBucket GetTimeBucket(base::TimeDelta time_delta);

// Returns the user type associated with the specified `account_id`, or
// `std::nullopt` if type cannot be determined.
ASH_EXPORT std::optional<user_manager::UserType> GetUserType(
    const AccountId& account_id);

// Returns whether the primary user account is active.
ASH_EXPORT bool IsPrimaryAccountActive();

// Returns whether the primary user account's pref service is active.
ASH_EXPORT bool IsPrimaryAccountPrefServiceActive();

// Returns whether `account_id` is associated with the primary user account.
ASH_EXPORT bool IsPrimaryAccountId(const AccountId& account_id);

// Returns the unique string representation of the specified `tutorial_id`.
ASH_EXPORT std::string ToString(TutorialId tutorial_id);

}  // namespace user_education_util
}  // namespace ash

#endif  // ASH_USER_EDUCATION_USER_EDUCATION_UTIL_H_