syntax = "proto3";

package bookstore;

import "google/api/annotations.proto";
import "google/api/httpbody.proto";
import "google/protobuf/empty.proto";
import "google/protobuf/struct.proto";

// A simple Bookstore API.
//
// The API manages shelves and books resources. Shelves contain books.
service Bookstore {
  // Returns a list of all shelves in the bookstore.
  rpc ListShelves(google.protobuf.Empty) returns (ListShelvesResponse) {
    option (google.api.http) = {
      get: "/shelves"
    };
  }
  // Creates a new shelf in the bookstore.
  rpc CreateShelf(CreateShelfRequest) returns (Shelf) {
    option (google.api.http) = {
      post: "/shelf"
      body: "shelf"
    };
  }
  // Creates a new shelf in the bookstore via a mapped package.service.method as its HTTP path.
  rpc CreateShelfWithPackageServiceAndMethod(CreateShelfRequest) returns (Shelf) {
    option (google.api.http) = {
      post: "/bookstore.Bookstore/CreateShelfWithPackageServiceAndMethod"
      body: "shelf"
    };
  }
  // Creates multiple shelves with one streaming call
  rpc BulkCreateShelf(stream CreateShelfRequest) returns (stream Shelf) {
    option (google.api.http) = {
      post: "/bulk/shelves"
      body: "shelf"
    };
  }
  // Returns a specific bookstore shelf.
  rpc GetShelf(GetShelfRequest) returns (Shelf) {
    option (google.api.http) = {
      get: "/shelves/{shelf}"
    };
  }
  // Deletes a shelf, including all books that are stored on the shelf.
  rpc DeleteShelf(DeleteShelfRequest) returns (google.protobuf.Empty) {
  }
  // Returns a list of books on a shelf.
  rpc ListBooks(ListBooksRequest) returns (stream Book) {
    option (google.api.http) = {
      get: "/shelves/{shelf}/books"
    };
  }
  // Creates a new book.
  rpc CreateBook(CreateBookRequest) returns (Book) {
    option (google.api.http) = {
      put: "/shelves/{shelf}/books"
      body: "book"
    };
  }
  // Returns a specific book.
  rpc GetBook(GetBookRequest) returns (Book) {
  }
  // Deletes a book from a shelf.
  rpc DeleteBook(DeleteBookRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      delete: "/shelves/{shelf}/books/{book}"
    };
  }
  rpc UpdateBook(UpdateBookRequest) returns (Book) {
    option (google.api.http) = {
      patch: "/shelves/{shelf}/books/{book.id}"
      body: "book"
    };
  }
  rpc BookstoreOptions(GetShelfRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      custom {kind: "OPTIONS" path: "/shelves/{shelf}"}
    };
  }
  // Returns a specific author.
  rpc GetAuthor(GetAuthorRequest) returns (Author) {
    option (google.api.http) = {
      get: "/authors/{author}"
    };
  }
  rpc GetIndex(google.protobuf.Empty) returns (google.api.HttpBody) {
    option (google.api.http) = {
      get: "/index"
    };
  }
  rpc GetIndexStream(google.protobuf.Empty) returns (stream google.api.HttpBody) {
    option (google.api.http) = {
      get: "/indexStream"
    };
  }
  rpc PostBody(EchoBodyRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      post: "/postBody"
      body: "nested.content"
    };
  }
  rpc StreamBody(stream EchoBodyRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      post: "/streamBody"
      body: "nested.content"
    };
  }
  rpc EchoBody(EchoBodyRequest) returns (google.api.HttpBody) {
    option (google.api.http) = {
      post: "/echoBody"
      body: "nested.content"
    };
  }

  rpc EchoRawBody(google.api.HttpBody) returns (google.api.HttpBody) {
    option (google.api.http) = {
      get: "/echoRawBody"
      additional_bindings: {post: "/echoRawBody"}
    };
  }

  rpc EchoNestedBody(EchoNestedRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      post: "/echoNestedBody"
      body: "nested1.body"
    };
  }
  rpc EchoResponseBodyPath(google.protobuf.Empty) returns (EchoBodyRequest) {
    option (google.api.http) = {
      get: "/echoResponseBodyPath"
      response_body: "nested.content"
    };
  }
  rpc EchoStruct(EchoStructReqResp) returns (EchoStructReqResp) {
    option (google.api.http) = {
      post: "/echoStruct"
      body: "content"
    };
  }
  // To test grpc transcoding with an unknown field.
  // This could happen when the grpc server is using a updated proto with a new field,
  // but Envoy transcoding config is still using the old version.
  rpc GetBigBook(google.protobuf.Empty) returns (OldBigBook) {
    option (google.api.http) = {
      get: "/bigbook"
    };
  }
  rpc PostWildcard(EchoBodyRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = {
      post: "/wildcard/{arg=**}"
    };
  }
}

service ServiceWithResponseBody {
  rpc EchoStruct(EchoStructReqResp) returns (EchoStructReqResp) {
    option (google.api.http) = {
      get: "/echoStruct"
      response_body: "content"
    };
  }
}

service ServiceWithInvalidRequestBodyPath {
  rpc EchoStruct(EchoStructReqResp) returns (EchoStructReqResp) {
    option (google.api.http) = {
      get: "/echoStruct"
      body: "unknown.field"
    };
  }
}

service ServiceWithInvalidResponseBodyPath {
  rpc EchoStruct(EchoStructReqResp) returns (EchoStructReqResp) {
    option (google.api.http) = {
      get: "/echoStruct"
      response_body: "unknown.field"
    };
  }
}

// A shelf resource.
message Shelf {
  // A unique shelf id.
  int64 id = 1;
  // A theme of the shelf (fiction, poetry, etc).
  string theme = 2;
}

// A book resource.
message Book {
  // A unique book id.
  int64 id = 1;
  // An author of the book.
  string author = 2;
  // A book title.
  string title = 3;
  // Quotes from the book.
  repeated string quotes = 4;
}

// An author resource.
message Author {
  // A unique author id.
  int64 id = 1;
  enum Gender {
    UNKNOWN = 0;
    MALE = 1;
    FEMALE = 2;
  };
  Gender gender = 2;
  string first_name = 3;
  string last_name = 4 [json_name = "lname"];
}

// Response to ListShelves call.
message ListShelvesResponse {
  // Shelves in the bookstore.
  repeated Shelf shelves = 1;
}

// Request message for CreateShelf method.
message CreateShelfRequest {
  // The shelf resource to create.
  Shelf shelf = 1;
}

// Request message for GetShelf method.
message GetShelfRequest {
  // The ID of the shelf resource to retrieve.
  int64 shelf = 1;
}

// Request message for DeleteShelf method.
message DeleteShelfRequest {
  // The ID of the shelf to delete.
  int64 shelf = 1;
}

// Request message for ListBooks method.
message ListBooksRequest {
  // ID of the shelf which books to list.
  int64 shelf = 1;
}

// Request message for CreateBook method.
message CreateBookRequest {
  // The ID of the shelf on which to create a book.
  int64 shelf = 1;
  // A book resource to create on the shelf.
  Book book = 2;
}

// Request message for GetBook method.
message GetBookRequest {
  // The ID of the shelf from which to retrieve a book.
  int64 shelf = 1;
  // The ID of the book to retrieve.
  int64 book = 2;
}

// Request message for UpdateBook method
message UpdateBookRequest {
  // The ID of the shelf from which to retrieve a book.
  int64 shelf = 1;
  // A book resource to update on the shelf.
  Book book = 2;
}

// Request message for DeleteBook method.
message DeleteBookRequest {
  // The ID of the shelf from which to delete a book.
  int64 shelf = 1;
  // The ID of the book to delete.
  int64 book = 2;
}

// Request message for GetAuthor method.
message GetAuthorRequest {
  // The ID of the author resource to retrieve.
  int64 author = 1;
}

message EchoBodyRequest {
  message Nested {
    google.api.HttpBody content = 1;
  }
  string arg = 1;
  string unused = 2;
  Nested nested = 3;
}

message EchoNestedRequest {
  message Nested {
    google.api.HttpBody body = 1;
  }
  Nested nested1 = 1;
  Nested nested2 = 2;
}

// Request and Response message for EchoStructReqResp method.
message EchoStructReqResp {
  // The content of request.
  google.protobuf.Struct content = 1;
}

// Test message for deeply-nested HttpBody field.
message DeepNestedBody {
  message Nested {
    message Nested {
      message Nested {
        google.api.HttpBody body = 500000000;
      }
      Nested nested = 100000000;
    }
    message Extra {
      int32 field = 1;
    }
    Nested nested = 1000000;
    Extra extra = 50;
  }
  message Extra {
    string field = 1;
  }
  Nested nested = 1;
  Extra extra = 2;
}

// gRPC server is using BigBook, but envoy transcoder filter is using
// OldBigBook with missing `field1`.
message BigBook {
  string field1 = 1;
  string field2 = 2;
  string field3 = 3;
}

// The BigBook message with missing `field1`.
message OldBigBook {
  string field2 = 2;
  string field3 = 3;
}