// Copyright 2018 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;

package autofill_assistant;

// Context contains client environment details.
message ClientContextProto {
  message Chrome { optional string chrome_version = 1; }
  oneof client { Chrome chrome = 1; }
}

// Get the list of scripts that can potentially be run on a url.
message SupportsScriptRequestProto {
  optional string url = 1;

  // Parameters that can be used to filter the scripts suitable for execution.
  repeated ScriptParameterProto script_parameters = 2;

  optional ClientContextProto client_context = 3;
}

message ScriptParameterProto {
  // Parameter name, as found in the Intent, without prefix.
  optional string name = 3;
  optional string value = 2;
}

// Response of the list of supported scripts.
message SupportsScriptResponseProto {
  repeated SupportedScriptProto scripts = 1;
}

// Supported script.
message SupportedScriptProto {
  // This is the internal name of the script.
  optional string path = 1;

  message PresentationProto {
    // Script name.
    optional string name = 1;

    // Precondition contains a set of conditions that must hold for a script to
    // be executed. No precondition means that a script can run in any case.
    optional ScriptPreconditionProto precondition = 3;

    // Text display at the same time as the script is proposed. If more than one
    // script has an initial prompt, the prompt of the highest-priority script
    // wins.
    optional string initial_prompt = 4;

    // Display priority of the script. Lowest number has highest priority, which
    // means a script with priority 0 should be displayed before a script with
    // priority 1.
    optional int32 priority = 5;

    // When set to true this script can be run in 'autostart mode'. Script won't
    // be shown.
    optional bool autostart = 8;
  }
  optional PresentationProto presentation = 2;
}

enum ScriptStatusProto {
  // Never explicitly set. Reading this value means the enum field is either
  // not set or set to a value not listed here.
  UNKNOWN_SCRIPT_STATUS = 0;
  // The script finished successfully.
  SCRIPT_STATUS_SUCCESS = 1;
  // The script failed.
  SCRIPT_STATUS_FAILURE = 2;
  // The user cancelled the script.
  SCRIPT_STATUS_CANCELLED = 3;
  // The script is currently running.
  SCRIPT_STATUS_RUNNING = 4;
  // The script was not run.
  SCRIPT_STATUS_NOT_RUN = 5;
}

// Condition on the status of a previous script run.
message ScriptStatusMatchProto {
  enum Comparator {
    UNSPECIFIED = 0;
    EQUAL = 1;
    DIFFERENT = 2;
  }

  // Required. Path of the script whose status should be checked.
  optional string script = 1;

  // Required. The status the script should have for the condition to hold.
  optional ScriptStatusProto status = 2;

  // Optional. The comparison performed when checking the status. It will be
  // interpreted as EQUAL if not set.
  optional Comparator comparator = 3;
}

message ScriptPreconditionProto {
  // Combined with AND: the elements referenced here must be present.
  repeated ElementReferenceProto elements_exist = 3;
  // Pattern of the path parts of the URL, including query and '#''.
  repeated string path_pattern = 5;
  // Domain (exact match) excluding the last '/' character.
  repeated string domain = 6;
  // Combined with AND: all matches must be true for precondition to hold.
  repeated ScriptParameterMatchProto script_parameter_match = 7;
  repeated ScriptStatusMatchProto script_status_match = 8;
  repeated FormValueMatchProto form_value_match = 9;
}

message ScriptParameterMatchProto {
  // Parameter name, as found in the Intent, without prefix.
  optional string name = 4;

  // Checks whether the script parameter is present.
  optional bool exists = 2 [default = true];

  // Checks whether the script parameter has exact value. Empty or missing value
  // is treated as wildcard - any value will pass.
  optional string value_equals = 3;
}

message FormValueMatchProto {
  // Required. The selector associated to the form element whose value should be
  // checked.
  optional ElementReferenceProto element = 1;
}

enum PolicyType {
  UNKNOWN_POLICY = 0;
  SCRIPT = 1;
}

message ScriptActionRequestProto {
  optional ClientContextProto client_context = 7;

  // The server payload received from the previous response.
  optional bytes server_payload = 2;

  oneof request {
    InitialScriptActionsRequestProto initial_request = 4;
    NextScriptActionsRequestProto next_request = 5;
  }
}

// Initial request to get a script's actions.
message InitialScriptActionsRequestProto {
  message QueryProto {
    // The backend expects the |script_path| to be a repeated field. This field
    // is expected to contain only one element.
    repeated string script_path = 1;
    optional PolicyType policy = 3;
  }
  optional QueryProto query = 3;

  repeated ScriptParameterProto script_parameters = 2;
}

// Next request to get a script's actions.
message NextScriptActionsRequestProto {
  // The result of processing each ActionProto from the previous response. This
  // field must be in the same order as the actions in the original response.
  // It may have less actions in case of failure.
  repeated ProcessedActionProto processed_actions = 1;
}

// Response of a script's actions.
message ActionsResponseProto {
  // Opaque data that should not be interpreted and must pass this back
  // unchanged in the next request.
  optional bytes server_payload = 2;

  // Actions to be performed in order.
  // Should stop processing as soon as an action fails.
  repeated ActionProto actions = 3;
}

// An action could be performed.
message ActionProto {
  // Wait these many milliseconds before executing the action, if set.
  optional int32 action_delay_ms = 3;

  // Opaque data that should not be interpreted by the client. The client must
  // pass this back unchanged in the next request
  optional bytes server_payload = 4;

  oneof action_info {
    ClickProto click = 5;
    SelectOptionProto select_option = 7;
    NavigateProto navigate = 9;
    TellProto tell = 11;
    FocusElementProto focus_element = 12;
    WaitForDomProto wait_for_dom = 19;
    UseCreditCardProto use_card = 28;
    UseAddressProto use_address = 29;
    UploadDomProto upload_dom = 18;
    HighlightElementProto highlight_element = 31;
    ShowDetailsProto show_details = 32;
    ResetProto reset = 34;
    StopProto stop = 35;
  }

  // Set to true to make the client remove any contextual information if the
  // script finishes with this action. It has no effect if there is any other
  // action sent to the client after this one. Default is false.
  optional bool clean_contextual_ui = 33;
}

message ProcessedActionProto {
  // The action that was processed.
  optional ActionProto action = 1;

  optional ProcessedActionStatusProto status = 2;

  oneof result_data { string html_source = 12; }
}

enum ProcessedActionStatusProto {
  UNKNOWN_ACTION_STATUS = 0;
  ELEMENT_RESOLUTION_FAILED = 1;
  ACTION_APPLIED = 2;
  OTHER_ACTION_STATUS = 3;
}

// A reference to an unique element on the page, possibly nested in frames.
message ElementReferenceProto {
  // A sequence of CSS selectors. Any non-final CSS selector is expected to
  // arrive at a frame or an iframe, i.e. an element that contains another
  // document.
  // APIs are free to reject element references that do not refer to unique
  // elements (i.e. resolve to more than one element on the page).
  repeated string selectors = 2;
}

// Contain all arguments to perform a click.
message ClickProto {
  optional ElementReferenceProto element_to_click = 1;
}

// Contain all arguments to perform a select option action.
message SelectOptionProto {
  // The drop down element on which to select an option.
  optional ElementReferenceProto element = 2;
  // Value of the option to use.
  optional string selected_option = 3;
}

// Contain a localized text message from the server.
message TellProto {
  optional string message = 1;
}

// Contain all arguments to focus on an element.
message FocusElementProto {
  // Element to focus on.
  optional ElementReferenceProto element = 1;

  // Optional title to show in the status bar.
  optional string title = 2;
}

message AutofillStrings {
  optional string fill_manually = 1;

  optional string fill_form = 2;

  optional string check_form = 3;
}

// Fill a form with an address if there is, otherwise fail this action.
message UseAddressProto {
  // Message used to indicate what form fields should be filled with what
  // information coming from the address.
  message RequiredField {
    enum AddressField {
      UNDEFINED = 0;
      FIRST_NAME = 1;
      LAST_NAME = 2;
      FULL_NAME = 3;
      PHONE_NUMBER = 4;
      EMAIL = 5;
      ORGANIZATION = 6;
      COUNTRY_CODE = 7;
      REGION = 8;  // e.g. state
      STREET_ADDRESS = 9;
      LOCALITY = 10;  // e.g. city
      DEPENDANT_LOCALITY = 11;
      POSTAL_CODE = 12;
    }

    optional AddressField address_field = 1;

    optional ElementReferenceProto element = 2;
  }

  // An optional name to allow to handle multiple addresses selection (for
  // instance a billing and a delivery address).
  optional string name = 1;

  // An optional message to show to the user when asking to select an address.
  // TODO(crbug.com/806868): Make the prompt a required field.
  optional string prompt = 2;

  // Reference to an element in the form that should be filled.
  optional ElementReferenceProto form_field_element = 4;

  // An optional list of fields that should be filled by this action.
  repeated RequiredField required_fields = 6;

  optional AutofillStrings strings = 8;
}

// Fill a form with a credit card if there is, otherwise fail this action.
message UseCreditCardProto {
  // An optional message to show to the user when asking to select a card.
  // TODO(crbug.com/806868): Make the prompt a required field.
  optional string prompt = 1;

  // A reference to the card number field in the form that should be filled.
  optional ElementReferenceProto form_field_element = 3;

  optional AutofillStrings strings = 8;
}

// Ask Chrome to wait for an element in the DOM. This can be used to only
// proceed to the next action once the page is ready.
message WaitForDomProto {
  // Fail after waiting this amount of time.
  optional int32 timeout_ms = 1;

  // The element to wait for.
  repeated string selectors = 2;
}

// Volatile upload of a portion of the dom for backend analysis, does not store
// anything.
message UploadDomProto {
  // The element that should be a root of uploaded DOM. If empty then the whole
  // page is returned.
  optional ElementReferenceProto tree_root = 1;
}

// Contain all arguments to perform a highlight element action.
message HighlightElementProto {
  // The element to highlight.
  optional ElementReferenceProto element = 1;
}

// Load the given URL in the current tab.
message NavigateProto {
  optional string url = 1;
}

// Resets Autofill Assistant: clears any state and server payload.
message ResetProto {}

// Stop Autofill Assistant.
message StopProto {}

message DateProto {
  optional int64 year = 1;

  // Month of the year in the range [1-12].
  optional int32 month = 2;

  // Day of the month in the range [1-31].
  optional int32 day = 3;
}

message TimeProto {
  // Hour in the range [0-23].
  optional int32 hour = 1;

  // Minute in the range [0-59].
  optional int32 minute = 2;

  // Second in the range [0-59].
  optional int32 second = 3;
}

message DateTimeProto {
  optional DateProto date = 1;
  optional TimeProto time = 2;
}

message DetailsProto {
  optional string title = 1;

  optional string url = 2;

  optional DateTimeProto datetime = 3;

  optional string description = 4;
}

// Show contextual information.
message ShowDetailsProto {
  optional DetailsProto details = 1;
}