// Copyright (c) 2020, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

syntax = "proto3";

package dart_services.api;

message CompileRequest {
  // The Dart source.
  string source = 1;

  // Return the Dart to JS source map; optional (defaults to false).
  bool returnSourceMap = 2;
}

message CompileDDCRequest {
  // The Dart source.
  string source = 1;
}

message SourceRequest {
  // The Dart source.
  string source = 1;

  // The offset within source to operate at.
  int32 offset = 2;
}

message AnalysisResults {
  repeated AnalysisIssue issues = 1;

  // The package imports parsed from the source.
  repeated string packageImports = 2;

  // Make this response compatible with BadRequest
  ErrorMessage error = 99;
}

message AnalysisIssue {
  string kind = 1;
  int32 line = 2;
  string message = 3;
  string sourceName = 4;
  bool hasFixes = 5;
  int32 charStart = 6;
  int32 charLength = 7;
}

message VersionRequest {}

message CompileResponse {
  string result = 1;
  string sourceMap = 2;

  // Make this response compatible with BadRequest
  ErrorMessage error = 99;
}

message CompileDDCResponse {
  string result = 1;
  string modulesBaseUrl = 2;

  // Make this response compatible with BadRequest
  ErrorMessage error = 99;
}

message DocumentResponse {
  map<string, string> info = 1;

  // Make this response compatible with BadRequest
  ErrorMessage error = 99;
}

message CompleteResponse {
  // The offset of the start of the text to be replaced.
  int32 replacementOffset = 1;

  // The length of the text to be replaced.
  int32 replacementLength = 2;

  repeated Completion completions = 3;

  // Make this response compatible with BadRequest
  ErrorMessage error = 99;
}

message Completion { map<string, string> completion = 1; }

message FixesResponse {
  repeated ProblemAndFixes fixes = 1;

  // Make this response compatible with BadRequest
  ErrorMessage error = 99;
}

// Represents a problem detected during analysis, and a set of possible ways of
// resolving the problem.
message ProblemAndFixes {
  repeated CandidateFix fixes = 1;
  string problemMessage = 2;
  int32 offset = 3;
  int32 length = 4;
}

// Represents a possible way of solving an Analysis Problem.
message CandidateFix {
  string message = 1;
  repeated SourceEdit edits = 2;
  int32 selectionOffset = 3;
  repeated LinkedEditGroup linkedEditGroups = 4;
}

// Represents a single edit-point change to a source file.
message SourceEdit {
  int32 offset = 1;
  int32 length = 2;
  string replacement = 3;
}

message LinkedEditGroup {
  // The positions of the regions that should be edited simultaneously.
  repeated int32 positions = 1;

  // The length of the regions that should be edited simultaneously.
  int32 length = 2;

  // Pre-computed suggestions for what every region might want to be changed to.
  repeated LinkedEditSuggestion suggestions = 3;
}

message LinkedEditSuggestion {
  // The value that could be used to replace all of the linked edit regions.
  string value = 1;

  // The kind of value being proposed.
  string kind = 2;
}

// Represents a reformatting of the code.
message FormatResponse {
  // The formatted source code.
  string newString = 1;

  // The (optional) new offset of the cursor; can be `null`.
  int32 offset = 2;

  // Make this response compatible with BadRequest
  ErrorMessage error = 99;
}

// The response from the `/assists` service call.
message AssistsResponse {
  repeated CandidateFix assists = 1;

  // Make this response compatible with BadRequest
  ErrorMessage error = 99;
}

// The response from the `/version` service call.
message VersionResponse {
  // The Dart SDK version that DartServices is compatible with.
  string sdkVersion = 1;

  // The full Dart SDK version that DartServices is compatible with.
  string sdkVersionFull = 2;

  // The Dart SDK version that the server is running on. This will start with a
  // semver string, and have a space and other build details appended.
  string runtimeVersion = 3;

  // The App Engine version.
  string appEngineVersion = 4;

  // The dart-services backend version.
  string servicesVersion = 5;

  // The Flutter SDK's version
  string flutterVersion = 6;

  // The Flutter SDK's Dart version
  string flutterDartVersion = 7;

  // The Flutter SDK's full Dart version
  string flutterDartVersionFull = 8;

  // Make this response compatible with BadRequest
  ErrorMessage error = 99;
}

// Response from the server when errors are thrown internally
message BadRequest { ErrorMessage error = 99; }

// Individual error messages.
message ErrorMessage { string message = 1; }