syntax = "proto3";

import "protobuf/src/google/protobuf/empty.proto";
import "protobuf/src/google/protobuf/timestamp.proto";

option go_package = "github.com/ChausseBenjamin/rafta/pkg/model";

message UUID {
	string value = 1;
}

enum TaskState {
  TASK_UNDEFINED = 0;
  TASK_PENDING = 1;
  TASK_IN_PROGRESS = 2;
  TASK_DONE = 3;
  TASK_BLOCKED = 4;
}

message UserData {
  string name = 1;
  string email = 2;
  google.protobuf.Timestamp created_on = 3;
  google.protobuf.Timestamp last_login = 4;
}

message User {
  UUID id = 1;
  UserData data = 2;
}

// Used only by admin users to create users manually since he cannot use it's
// own jwt to create a non admin user.
message UserCreationMsg {
	UserData userData = 1;
	string userSecret = 2;
}

message TaskRecurrence {
	string cron = 1;
	bool active = 2;
}

message TaskData {
  string title = 1;
  string desc = 2; // markdown
	// Intentionally vague for easy client implementation:
  uint32 priority = 3; // 0=undefined, 1=highest, 0xFFFFFFFF=lowest
  TaskState state = 4;
	TaskRecurrence recurrence = 5;
  google.protobuf.Timestamp created_on = 6;
  google.protobuf.Timestamp last_updated = 7;
  repeated string tags = 8;
}

message TaskUpdate {
	UUID id = 1;
	oneof field {
		string title = 2;
		string desc = 3;
		uint32 priority = 4;
		TaskState state = 5;
		TaskRecurrence recurrence = 6;
	}
}

message Task {
  UUID id = 1;
  TaskData data = 2;
}

message TaskList {
  repeated Task tasks = 1;
}

message UserList {
  repeated User users = 1;
}

// Accessible to all users once authenticated
// User can only manipulate its own data
service RaftaUser {
	// Retrieval
  rpc GetUserInfo(google.protobuf.Empty) returns (User);
  rpc GetTask(UUID) returns (Task);

	// User Manipulation
	rpc NewUser(UserData) returns (User);
	rpc UpdateUserInfo(User) returns (google.protobuf.Empty);
	// Input is empty because user should be authenticated via JWT
	rpc DeleteUser(google.protobuf.Empty) returns (google.protobuf.Empty);

  // Task Manipulation
  rpc DeleteTask(UUID) returns (google.protobuf.Empty);
  rpc UpdateTask(TaskUpdate) returns (google.protobuf.Empty);
  rpc CreateTask(TaskData) returns (Task);
}

// Accessible only to users with the admin role
service RaftaAdmin {
  // Retrieval
  rpc GetUserTasks(UUID) returns (TaskList);
  rpc GetAllUsers(google.protobuf.Empty) returns (UserList);
  rpc GetUser(UUID) returns (User);

  // User Manipulation
  rpc DeleteUser(UUID) returns (google.protobuf.Empty);
  rpc UpdateUser(User) returns (google.protobuf.Empty);
  rpc CreateUser(UserCreationMsg) returns (User);
}