syntax = "proto3";

import 'google/protobuf/empty.proto';
import 'library.proto';

package player;

service Player {
	rpc PlayTrack(TrackRequest) returns (PlayTrackResponse);
	rpc ResumeTrack(google.protobuf.Empty) returns (PauseState);
	rpc PauseTrack(google.protobuf.Empty) returns (PauseState);
	rpc TogglePause(google.protobuf.Empty) returns (PauseState);
	rpc GetStatus(google.protobuf.Empty) returns (stream PlayerStatus);
	rpc SeekPosition(SeekPositionRequest) returns (SeekPositionResponse);
	rpc SetVolume(SetVolumeRequest) returns (SetVolumeResponse);
	rpc PlayTrackNext(TrackRequest) returns (Queue);
	rpc AddTrackToQueue(TrackRequest) returns (Queue);
	rpc SkipTrack(google.protobuf.Empty) returns (PlayerStatus);
	rpc SkipToQueueIndex(SkipToQueueIndexRequest) returns (PlayerStatus);
}

message TrackRequest {
	string hash = 1;
}

message PlayTrackResponse {
	library.Track track = 1;
	uint64 position = 2;
}

message PlayerStatus {
	optional library.Track currently_playing = 1;
	bool is_paused = 2;
	float volume = 3;
	uint64 progress = 4;
	repeated library.Track queue = 5;
}

message Queue {
	repeated library.Track tracks = 1;
}

message PauseState {
	bool is_paused = 1;
}

message SeekPositionRequest {
	uint64 position = 1;
}

message SeekPositionResponse {
	uint64 position = 1;
}

message SetVolumeRequest  {
	float volume = 1;
}

message SetVolumeResponse  {
	float volume = 1;
}

message SkipToQueueIndexRequest {
	uint32 index = 1;
}