// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_AUTOFILL_CORE_COMMON_AUTOFILL_UTIL_H_
#define COMPONENTS_AUTOFILL_CORE_COMMON_AUTOFILL_UTIL_H_

#include <string>
#include <string_view>
#include <vector>

#include "base/types/strong_alias.h"
#include "components/autofill/core/common/aliases.h"
#include "components/autofill/core/common/form_data.h"
#include "components/autofill/core/common/form_field_data.h"
#include "components/autofill/core/common/mojom/autofill_types.mojom-shared.h"
#include "url/gurl.h"

namespace autofill {

using IsPasswordRequestManuallyTriggered =
    base::StrongAlias<class IsPasswordRequestManuallyTriggeredTag, bool>;

// The length of the GUIDs used for local autofill data. It is different than
// the length used for server autofill data.
constexpr int kLocalGuidSize = 36;

// Returns true if showing autofill signature as HTML attributes is enabled.
bool IsShowAutofillSignaturesEnabled();

// A token is a sequences of contiguous characters separated by any of the
// characters that are part of delimiter set {' ', '.', ',', '-', '_', '@'}.

// Currently, a token for the purposes of this method is defined as {'@'}.
// Returns true if the `full_string` has a `prefix` as a prefix and the prefix
// ends on a token.
bool IsPrefixOfEmailEndingWithAtSign(std::u16string_view full_string,
                                     std::u16string_view prefix);

// Returns the index of the shortest entry in the given select field of which
// |value| is a substring. Returns -1 if no such entry exists.
std::optional<size_t> FindShortestSubstringMatchInSelect(
    const std::u16string& value,
    bool ignore_whitespace,
    base::span<const SelectOption> field_options);

// Lowercases and tokenizes a given `attribute` string.
// Considers any ASCII whitespace character as a possible separator.
// Also ignores empty tokens, resulting in a collapsing of whitespace.
std::vector<std::string> LowercaseAndTokenizeAttributeString(
    std::string_view attribute);

// Returns `value` stripped from its whitespaces.
std::u16string RemoveWhitespace(std::u16string_view value);

// Returns the credit card field `value` trimmed from whitespace and with stop
// characters removed.
std::u16string SanitizeCreditCardFieldValue(std::u16string_view value);

// Returns true if and only if the field value has no character except the
// formatting characters. This means that the field value is a formatting string
// entered by the website and not a real value entered by the user.
bool SanitizedFieldIsEmpty(std::u16string_view value);

// Returns true if focused_field_type corresponds to a fillable field.
bool IsFillable(mojom::FocusedFieldType focused_field_type);

mojom::SubmissionIndicatorEvent ToSubmissionIndicatorEvent(
    mojom::SubmissionSource source);

// Strips any authentication data from `gurl`.
GURL StripAuth(const GURL& gurl);

// Strips any authentication data, as well as query and ref portions of URL.
GURL StripAuthAndParams(const GURL& gurl);

// Checks if the user triggered passwords Autofill on a field manually through
// the Chrome context menu.
IsPasswordRequestManuallyTriggered IsPasswordsAutofillManuallyTriggered(
    AutofillSuggestionTriggerSource trigger_source);

// Checks if the user triggered AtMemory on a field.
bool IsAtMemoryTriggerSource(AutofillSuggestionTriggerSource trigger_source);

// Returns whether the feature `kAutofillPaymentsFieldSwapping` is enabled
// or not.
// TODO(crbug.com/354175563): Remove when launched on all platforms.
bool IsPaymentsFieldSwappingEnabled();

// Extracts comma-separated strings from a ButtonTitleList.
std::u16string GetButtonTitlesString(const ButtonTitleList& titles_list);

// Returns true if `form` is considered "perfectly filled".
//
// A form is perfectly filled if the user did not have to manually type into any
// field that Autofill didn't assist with.
bool IsFormDataPerfectlyFilled(const FormData& form);

// Returns true if `field` is a <select> field that appears to be a
// `PHONE_HOME_COUNTRY_CODE` field by looking at its option contents.
// "Augmented" refers to the fact that we also allow select options containing
// not only a country code but also further text like "Germany (+49)".
bool LikelyAugmentedPhoneCountryCode(const FormFieldData& field);

}  // namespace autofill

#endif  // COMPONENTS_AUTOFILL_CORE_COMMON_AUTOFILL_UTIL_H_