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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/autofill/core/browser/autofill_data_model.h"
#include <math.h>
#include "components/autofill/core/browser/autofill_type.h"
#include "url/gurl.h"
namespace autofill {
AutofillDataModel::AutofillDataModel(const std::string& guid,
const std::string& origin)
: guid_(guid),
origin_(origin),
use_count_(1),
use_date_(base::Time::Now()),
modification_date_(base::Time::Now()) {}
AutofillDataModel::~AutofillDataModel() {}
bool AutofillDataModel::IsVerified() const {
return !origin_.empty() && !GURL(origin_).is_valid();
}
// TODO(crbug.com/629507): Add support for injected mock clock for testing.
void AutofillDataModel::RecordUse() {
++use_count_;
use_date_ = base::Time::Now();
}
bool AutofillDataModel::CompareFrecency(const AutofillDataModel* other,
base::Time comparison_time) const {
double score = GetFrecencyScore(comparison_time);
double other_score = other->GetFrecencyScore(comparison_time);
// Ties are broken by MRU, then by GUID comparison.
if (score != other_score)
return score > other_score;
if (use_date_ != other->use_date_)
return use_date_ > other->use_date_;
return guid_ > other->guid_;
}
double AutofillDataModel::GetFrecencyScore(base::Time time) const {
// The formula calculates a score based on both the frequency and the recency
// of the profile and leveraging the properties of the logarithmic function.
// DaysSinceLastUse() and |use_count_| are offset because their minimum values
// are respectively 0 and 1 but the formula requires at least a value of 2.
return -log((time - use_date_).InDays() + 2) / log(use_count_ + 1);
}
} // namespace autofill
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