// 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.

#include "components/autofill/content/renderer/suggestion_properties.h"

#include "base/notreached.h"
#include "components/autofill/core/common/aliases.h"

using blink::WebFormControlElement;

namespace autofill {

// The following functions define properties of AutofillSuggestions based
// on the trigger source.
bool ShouldAutofillOnEmptyValues(
    AutofillSuggestionTriggerSource trigger_source) {
  switch (trigger_source) {
    case AutofillSuggestionTriggerSource::kFormControlElementClicked:
    case AutofillSuggestionTriggerSource::kTextFieldDidReceiveKeyDown:
    case AutofillSuggestionTriggerSource::kOpenTextDataListChooser:
    case AutofillSuggestionTriggerSource::kManualFallbackPasswords:
    case AutofillSuggestionTriggerSource::kComposeDialogLostFocus:
    case AutofillSuggestionTriggerSource::kComposeDelayedProactiveNudge:
    case AutofillSuggestionTriggerSource::kTextareaFocusedWithoutClick:
    case AutofillSuggestionTriggerSource::kContentEditableClicked:
    case AutofillSuggestionTriggerSource::kPasswordManagerProcessedFocusedField:
    case AutofillSuggestionTriggerSource::kProactivePasswordRecovery:
    case AutofillSuggestionTriggerSource::kGlic:
    case AutofillSuggestionTriggerSource::kAtMemoryContextMenu:
    case AutofillSuggestionTriggerSource::kAtMemoryKeyboardShortcut:
    case AutofillSuggestionTriggerSource::kAtMemoryTriggerString:
      return true;
    case AutofillSuggestionTriggerSource::kTextFieldValueChanged:
    case AutofillSuggestionTriggerSource::kAtMemoryInactivityNudge:
      return false;
    // `kPasswordManager` and `kiOS` are not used in the renderer code. As such,
    // suggestion properties don't apply to them.
    case AutofillSuggestionTriggerSource::kPasswordManager:
    case AutofillSuggestionTriggerSource::kiOS:
    case AutofillSuggestionTriggerSource::kUnspecified:
      break;
  }
  NOTREACHED();
}

bool ShouldAutofillOnLongValues(
    AutofillSuggestionTriggerSource trigger_source) {
  switch (trigger_source) {
    case AutofillSuggestionTriggerSource::kTextareaFocusedWithoutClick:
    case AutofillSuggestionTriggerSource::kContentEditableClicked:
    case AutofillSuggestionTriggerSource::kComposeDialogLostFocus:
    case AutofillSuggestionTriggerSource::kComposeDelayedProactiveNudge:
    case AutofillSuggestionTriggerSource::kAtMemoryContextMenu:
    case AutofillSuggestionTriggerSource::kAtMemoryKeyboardShortcut:
    case AutofillSuggestionTriggerSource::kAtMemoryTriggerString:
      return true;
    case AutofillSuggestionTriggerSource::kFormControlElementClicked:
    case AutofillSuggestionTriggerSource::kManualFallbackPasswords:
    case AutofillSuggestionTriggerSource::kOpenTextDataListChooser:
    case AutofillSuggestionTriggerSource::kTextFieldValueChanged:
    case AutofillSuggestionTriggerSource::kAtMemoryInactivityNudge:
    case AutofillSuggestionTriggerSource::kTextFieldDidReceiveKeyDown:
    case AutofillSuggestionTriggerSource::kPasswordManagerProcessedFocusedField:
    case AutofillSuggestionTriggerSource::kProactivePasswordRecovery:
    case AutofillSuggestionTriggerSource::kGlic:
      return false;
    case AutofillSuggestionTriggerSource::kPasswordManager:
    case AutofillSuggestionTriggerSource::kiOS:
    case AutofillSuggestionTriggerSource::kUnspecified:
      break;
  }
  NOTREACHED();
}

bool RequiresCaretAtEnd(AutofillSuggestionTriggerSource trigger_source) {
  switch (trigger_source) {
    case AutofillSuggestionTriggerSource::kTextFieldValueChanged:
    case AutofillSuggestionTriggerSource::kTextFieldDidReceiveKeyDown:
      return true;
    case AutofillSuggestionTriggerSource::kFormControlElementClicked:
    case AutofillSuggestionTriggerSource::kTextareaFocusedWithoutClick:
    case AutofillSuggestionTriggerSource::kContentEditableClicked:
    case AutofillSuggestionTriggerSource::kOpenTextDataListChooser:
    case AutofillSuggestionTriggerSource::kManualFallbackPasswords:
    case AutofillSuggestionTriggerSource::kComposeDialogLostFocus:
    case AutofillSuggestionTriggerSource::kComposeDelayedProactiveNudge:
    case AutofillSuggestionTriggerSource::kPasswordManagerProcessedFocusedField:
    case AutofillSuggestionTriggerSource::kProactivePasswordRecovery:
    case AutofillSuggestionTriggerSource::kGlic:
    case AutofillSuggestionTriggerSource::kAtMemoryContextMenu:
    case AutofillSuggestionTriggerSource::kAtMemoryInactivityNudge:
    case AutofillSuggestionTriggerSource::kAtMemoryKeyboardShortcut:
    case AutofillSuggestionTriggerSource::kAtMemoryTriggerString:
      return false;
    // `kPasswordManager` and `kiOS` are not used in the renderer code. As such,
    // suggestion properties don't apply to them.
    case AutofillSuggestionTriggerSource::kPasswordManager:
    case AutofillSuggestionTriggerSource::kiOS:
    case AutofillSuggestionTriggerSource::kUnspecified:
      break;
  }
  NOTREACHED();
}

bool ShouldShowFullSuggestionListForPasswordManager(
    AutofillSuggestionTriggerSource trigger_source,
    const WebFormControlElement& element) {
  switch (trigger_source) {
    case AutofillSuggestionTriggerSource::kFormControlElementClicked:
    case AutofillSuggestionTriggerSource::kPasswordManagerProcessedFocusedField:
      // Even if the user has not edited an input element, it may still contain
      // a default value filled by the website. In that case, don't elide
      // suggestions that don't have a common prefix with the default value.
      return element.IsAutofilled() || !element.UserHasEditedTheField();
    case AutofillSuggestionTriggerSource::kTextareaFocusedWithoutClick:
    case AutofillSuggestionTriggerSource::kContentEditableClicked:
    case AutofillSuggestionTriggerSource::kTextFieldValueChanged:
    case AutofillSuggestionTriggerSource::kTextFieldDidReceiveKeyDown:
    case AutofillSuggestionTriggerSource::kOpenTextDataListChooser:
    case AutofillSuggestionTriggerSource::kManualFallbackPasswords:
    case AutofillSuggestionTriggerSource::kComposeDialogLostFocus:
    case AutofillSuggestionTriggerSource::kComposeDelayedProactiveNudge:
    case AutofillSuggestionTriggerSource::kAtMemoryContextMenu:
    case AutofillSuggestionTriggerSource::kAtMemoryInactivityNudge:
    case AutofillSuggestionTriggerSource::kAtMemoryKeyboardShortcut:
    case AutofillSuggestionTriggerSource::kAtMemoryTriggerString:
      return false;
    case AutofillSuggestionTriggerSource::kProactivePasswordRecovery:
    case AutofillSuggestionTriggerSource::kGlic:
      return true;
    // `kPasswordManager` and `kiOS` are not used in the renderer code. As such,
    // suggestion properties don't apply to them. `kPasswordManager`
    // specifically is used to identify password manager suggestions in the
    // browser process. In the renderer, the logic triggering suggestions
    // through Blink events is shared. Thus, the return values for
    // `kFormControlElementClicked` etc. matter for the password manager in the
    // renderer.
    case AutofillSuggestionTriggerSource::kPasswordManager:
    case AutofillSuggestionTriggerSource::kiOS:
    case AutofillSuggestionTriggerSource::kUnspecified:
      break;
  }
  NOTREACHED();
}

}  // namespace autofill