syntax = "proto3";

package comments;

option go_package = "./proto;comments";

service Comments {
	rpc List(ListRequest) returns (ListResponse);
	rpc Create(CreateRequest) returns (CreateResponse);
	rpc Read(ReadRequest) returns (ReadResponse);
	rpc Delete(DeleteRequest) returns (DeleteResponse);
	rpc Update(UpdateRequest) returns (UpdateResponse);
	rpc Events(EventsRequest) returns (stream EventsResponse);
}

message Comment {
	// unique id for the comment, generated if not specified
	string id = 1;
	// time at which the comment was created
	string created = 2;
	// time at which the comment was updated
	string updated = 3;
	// subject of the comment
	string subject = 4;
	// text of the comment
	string text = 5;
}

// Create a new comment
message CreateRequest {
	// comment subject
	string subject = 1;
	// comment items
	string text = 2;
}

message CreateResponse {
	// The created comment
	Comment comment = 1;
}

// Read a comment
message ReadRequest {
	// the comment id
	string id = 1;
}

message ReadResponse {
	// The comment
	Comment comment = 1;
}

// Update a comment
message UpdateRequest {
	Comment comment = 1;
}

message UpdateResponse {
	Comment comment = 1;
}

// Delete a comment
message DeleteRequest {
	// specify the id of the comment
	string id = 1;
}

message DeleteResponse {
	Comment comment = 1;
}

// List all the comments
message ListRequest {}

message ListResponse {
	// the comment of comments
	repeated Comment comments = 1;
}

// Subscribe to comments events
message EventsRequest {
	// optionally specify a comment id
	string id = 1;
}

message EventsResponse {
	// the event which occured; create, delete, update
	string event = 1;
	// the comment which the operation occured on
	Comment comment = 2;
}