ios/chrome/browser/reader_mode/model/features.h

// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef IOS_CHROME_BROWSER_READER_MODE_MODEL_FEATURES_H_
#define IOS_CHROME_BROWSER_READER_MODE_MODEL_FEATURES_H_

#import "base/feature_list.h"
#import "base/metrics/field_trial_params.h"

// Feature to enable Reader Mode UI and entry points.
BASE_DECLARE_FEATURE(kEnableReaderMode);

// Feature to enable Reader Mode translation.
BASE_DECLARE_FEATURE(kEnableReaderModeTranslation);

// Feature to enable page eligibility heuristic to determine whether the Tools
// menu Reader Mode entry point should be shown for the web page.
BASE_DECLARE_FEATURE(kEnableReaderModePageEligibilityForToolsMenu);

// Feature to enable debugging information for Reader Mode UI.
BASE_DECLARE_FEATURE(kEnableReaderModeDebugInfo);

// Feature to enable Readability heuristic for page triggering eligibility.
BASE_DECLARE_FEATURE(kEnableReadabilityHeuristic);

// Feature to enable the default browser promo with Reading mode eligibility
// criteria.
BASE_DECLARE_FEATURE(kEnableReaderModeDefaultBrowserPromo);

// Name to configure the duration string for heuristic page load delay. See
// `base::TimeDeltaFromString` for valid duration string configurations.
extern const char kReaderModeHeuristicPageLoadDelayDurationStringName[];

// Name to configure the duration string for distillation timeout. See
// `base::TimeDeltaFromString` for valid duration string configurations.
extern const char kReaderModeDistillationTimeoutDurationStringName[];

// Returns the timeout for distilling Reader Mode.
const base::TimeDelta ReaderModeDistillationTimeout();

// Returns the delay time before triggering Reader Mode heuristic on page load.
const base::TimeDelta ReaderModeHeuristicPageLoadDelay();

// Returns whether the Reader Mode feature is available.
bool IsReaderModeAvailable();

// Returns whether the Reader Mode snackbar is enabled.
bool IsReaderModeSnackbarEnabled();

// Returns the number of days a user must be active to display the default
// browser promo.
int ReaderModeDefaultBrowserActiveDaysCriteria();

// Returns the number of days to span to determine the Reading Mode default
// browser eligibility criteria.
int ReaderModeDefaultBrowserNumDaysCriteria();

#endif  // IOS_CHROME_BROWSER_READER_MODE_MODEL_FEATURES_H_