// Copyright 2019 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.

syntax = "proto2";

option optimize_for = LITE_RUNTIME;
option java_package = "org.chromium.chrome.browser.autofill_assistant.proto";
option java_multiple_files = true;

package autofill_assistant;

import "model.proto";
import "view_layout.proto";

message InteractionsProto {
  repeated InteractionProto interactions = 1;
}

// An interaction consists of a trigger event and a series of actions.
message InteractionProto {
  // Functions to call each time the event happens, in the specified order.
  repeated CallbackProto callbacks = 1;
  // The trigger event for |callbacks|.
  optional EventProto trigger_event = 2;
}

// UI Actions to invoke.
message CallbackProto {
  oneof kind {
    SetModelValueProto set_value = 1;
    ShowInfoPopupProto show_info_popup = 2;
    ShowListPopupProto show_list_popup = 3;
    ComputeValueProto compute_value = 4;
    SetUserActionsProto set_user_actions = 5;
    EndActionProto end_action = 6;
    ShowCalendarPopupProto show_calendar_popup = 7;
    SetTextProto set_text = 8;
    ToggleUserActionProto toggle_user_action = 9;
    SetViewVisibilityProto set_view_visibility = 11;
  }
  // Optional model identifier pointing to a single boolean. If set, the
  // callback will only be invoked if the condition is true.
  optional string condition_model_identifier = 10;
}

message EventProto {
  oneof kind {
    OnModelValueChangedEventProto on_value_changed = 1;
    OnViewClickedEventProto on_view_clicked = 2;
    OnUserActionCalled on_user_action_called = 3;
    OnTextLinkClickedProto on_text_link_clicked = 4;
  }
}

// Event that is triggered whenever |model_identifier| changes.
message OnModelValueChangedEventProto {
  // The identifier of the value to observe.
  optional string model_identifier = 1;
}

// Event that is triggered whenever |view_identifier| is clicked.
message OnViewClickedEventProto {
  // The identifier of the view to observe.
  optional string view_identifier = 1;
}

// Event that is triggered when |user_action_identifier| is called.
message OnUserActionCalled {
  // The identifier of the user action to observe.
  optional string user_action_identifier = 1;
}

// Event that is triggered when clicking the specified text link.
message OnTextLinkClickedProto {
  // The number of the text link to observe, i.e., the number in the html-style
  // tag <link3>...</link3>.
  optional int32 text_link = 1;
}

// Callback that writes the specified value to |model_identifier|.
message SetModelValueProto {
  // The model identifier to write to.
  optional string model_identifier = 1;
  // The value to write.
  optional ValueReferenceProto value = 3;
  reserved 2;
}

// Computes a value and stores the result to |result_model_identifier|.
message ComputeValueProto {
  oneof kind {
    // Computes the logical AND of the specified model identifiers.
    BooleanAndProto boolean_and = 2;
    // Computes the logical OR of the specified model identifiers.
    BooleanOrProto boolean_or = 3;
    // Computes the logical NOT of the specified model identifiers.
    BooleanNotProto boolean_not = 4;
    // Creates a string representation of the specified value.
    ToStringProto to_string = 5;
    // Compares two values.
    ValueComparisonProto comparison = 6;
    // Computes the sum of two single integers.
    IntegerSumProto integer_sum = 7;
  }

  // The model identifier to write the result to.
  optional string result_model_identifier = 1;
}

// Performs a logical AND on all specified values.
message BooleanAndProto {
  // The values to logically AND. All values must be single booleans.
  repeated ValueReferenceProto values = 2;
  reserved 1;
}

// Performs a logical OR on all specified values.
message BooleanOrProto {
  // The values to logically OR. All values must be single booleans.
  repeated ValueReferenceProto values = 2;
  reserved 1;
}

// Performs a logical NOT on the specified value.
message BooleanNotProto {
  // The value to logically invert. Must be a single boolean.
  optional ValueReferenceProto value = 2;
  reserved 1;
}

// Creates a string representation of the specified value.
message ToStringProto {
  // The value to stringify.
  optional ValueReferenceProto value = 3;

  // Optional format options.
  oneof format_options { DateFormatProto date_format = 2; }
  reserved 1;
}

// A format string for a date, such as "EEE, MMM d". See
// http://userguide.icu-project.org/formatparse/datetime for full specification.
message DateFormatProto {
  optional string date_format = 1;
}

// A comparison of two values in the form |value_a| <mode> |value_b|. EQUAL is
// supported for all values. All other comparison modes are only supported for
// single integers, strings, and dates.
message ValueComparisonProto {
  enum Mode {
    UNDEFINED = 0;
    LESS = 1;
    LESS_OR_EQUAL = 2;
    EQUAL = 3;
    GREATER_OR_EQUAL = 4;
    GREATER = 5;
  }

  // The first value to compare.
  optional ValueReferenceProto value_a = 4;
  // The second value to compare.
  optional ValueReferenceProto value_b = 5;
  // The comparison mode.
  optional Mode mode = 3;

  reserved 1, 2;
}

// Computes the sum of all input integers.
message IntegerSumProto {
  // The values to sum. All values must be single integers.
  repeated ValueReferenceProto values = 3;

  reserved 1, 2;
}

// Displays a standard info popup.
message ShowInfoPopupProto {
  optional InfoPopupProto info_popup = 1;
}

// Displays a popup showing a list of strings to choose from. Depending on
// |allow_multiselect|, users will be able to select one or multiple items from
// the list.
message ShowListPopupProto {
  // The popup item type, corresponding to
  // chromium/content/browser/input/PopupItemType.java.
  enum ItemType {
    GROUP = 0;
    DISABLED = 1;
    ENABLED = 2;
  }
  // The item names to show in the list. Must be a StringList.
  optional ValueReferenceProto item_names = 6;
  // Optional, must be the same length as the list stored at
  // |items_list_model_identifier| if specified. Will default to ENABLED for all
  // items if not specified. Must be a list of int32 |ItemType| if specified.
  optional ValueReferenceProto item_types = 7;
  // The indices of the selected items (both input and output). Must be a list
  // of integers.
  optional string selected_item_indices_model_identifier = 3;
  // Whether to allow the selection of multiple items or not.
  optional bool allow_multiselect = 4;
  // Optional output model identifier to store the names of the selected items
  // in a StringList.
  optional string selected_item_names_model_identifier = 5;

  reserved 1, 2;
}

// Sets the list of available user actions. User actions are either direct
// actions performed via assistant and/or chips that users can tap.
message SetUserActionsProto {
  // The user actions to set. Must contain a UserActionList value.
  optional ValueReferenceProto user_actions = 2;

  reserved 1;
}

// Enables or disables a single user action. Modifies the value in-place.
message ToggleUserActionProto {
  // Input and output. Should point to a list of user actions to modify.
  optional string user_actions_model_identifier = 1;
  // The identifier of the specific user action to modify.
  optional string user_action_identifier = 2;
  // Whether the user action should be enabled or disabled. Should be a single
  // boolean.
  optional ValueReferenceProto enabled = 4;

  reserved 3;
}

// Ends the generic Ui action (this is usually tied to a chip).
//
// This behaves exactly the same as tapping a regular chip would in any other
// action, i.e., the result of the action (|status| + model) is written to the
// action response, which will be sent to the backend.
message EndActionProto {
  // The status to report to the backend.
  optional ProcessedActionStatusProto status = 1;
}

// Displays a calendar popup that lets the user select a date.
message ShowCalendarPopupProto {
  // The date model identifier (both input and output). Must point to a single
  // Date. If not set, the calendar will default to the current date.
  optional string date_model_identifier = 1;
  // The minimum allowed date. Must point to a single Date.
  optional ValueReferenceProto min_date = 4;
  // The maximum allowed date. Must point to a single Date.
  optional ValueReferenceProto max_date = 5;

  reserved 2, 3;
}

// Modifies the displayed text of a text view or a text input view.
message SetTextProto {
  // The text to set. Must be a single string.
  optional ValueReferenceProto text = 3;
  // The text view to modify. Must point to a text view or a text input
  // view.
  optional string view_identifier = 2;

  reserved 1;
}

// Modifies a view's visibiliy.
message SetViewVisibilityProto {
  // The view to modify.
  optional string view_identifier = 1;

  // The visibility flag. Must be a single boolean.
  optional ValueReferenceProto visible = 3;

  reserved 2;
}