syntax = "proto3";

package yaze.proto;

// ROM Manipulation Service
// Enables remote clients to read, write, and inspect ROM data
service RomService {
  // Read bytes from ROM
  rpc ReadBytes(ReadBytesRequest) returns (ReadBytesResponse);
  
  // Write bytes to ROM
  rpc WriteBytes(WriteBytesRequest) returns (WriteBytesResponse);
  
  // Get ROM information
  rpc GetRomInfo(GetRomInfoRequest) returns (GetRomInfoResponse);
  
  // Read specific ROM structures
  rpc ReadOverworldMap(ReadOverworldMapRequest) returns (ReadOverworldMapResponse);
  rpc ReadDungeonRoom(ReadDungeonRoomRequest) returns (ReadDungeonRoomResponse);
  rpc ReadSprite(ReadSpriteRequest) returns (ReadSpriteResponse);
  
  // Write specific ROM structures
  rpc WriteOverworldTile(WriteOverworldTileRequest) returns (WriteOverworldTileResponse);
  rpc WriteDungeonTile(WriteDungeonTileRequest) returns (WriteDungeonTileResponse);
  
  // Proposal-based changes (collaborative mode)
  rpc SubmitRomProposal(SubmitRomProposalRequest) returns (SubmitRomProposalResponse);
  rpc GetProposalStatus(GetProposalStatusRequest) returns (GetProposalStatusResponse);
  
  // Version management
  rpc CreateSnapshot(CreateSnapshotRequest) returns (CreateSnapshotResponse);
  rpc RestoreSnapshot(RestoreSnapshotRequest) returns (RestoreSnapshotResponse);
  rpc ListSnapshots(ListSnapshotsRequest) returns (ListSnapshotsResponse);
}

// ============================================================================
// Basic ROM Operations
// ============================================================================

message ReadBytesRequest {
  uint32 offset = 1;
  uint32 length = 2;
}

message ReadBytesResponse {
  bytes data = 1;
  string error = 2;
}

message WriteBytesRequest {
  uint32 offset = 1;
  bytes data = 2;
  bool require_approval = 3;  // Submit as proposal if true
}

message WriteBytesResponse {
  bool success = 1;
  string error = 2;
  string proposal_id = 3;  // Set if submitted as proposal
}

message GetRomInfoRequest {
  // Empty for now
}

message GetRomInfoResponse {
  string title = 1;
  uint32 size = 2;
  string checksum = 3;
  bool is_expanded = 4;
  string version = 5;
}

// ============================================================================
// Overworld Operations
// ============================================================================

message ReadOverworldMapRequest {
  uint32 map_id = 1;  // 0-159
}

message ReadOverworldMapResponse {
  uint32 map_id = 1;
  repeated uint32 tile16_data = 2;  // 512 tiles (32x16)
  bytes raw_data = 3;
  string error = 4;
}

message WriteOverworldTileRequest {
  uint32 map_id = 1;
  uint32 x = 2;
  uint32 y = 3;
  uint32 tile16_id = 4;
  bool require_approval = 5;
  string description = 6;  // For proposal description
}

message WriteOverworldTileResponse {
  bool success = 1;
  string error = 2;
  string proposal_id = 3;
}

// ============================================================================
// Dungeon Operations
// ============================================================================

message ReadDungeonRoomRequest {
  uint32 room_id = 1;  // 0-295
}

message ReadDungeonRoomResponse {
  uint32 room_id = 1;
  repeated uint32 tile16_data = 2;
  bytes raw_data = 3;
  string error = 4;
}

message WriteDungeonTileRequest {
  uint32 room_id = 1;
  uint32 x = 2;
  uint32 y = 3;
  uint32 tile16_id = 4;
  bool require_approval = 5;
  string description = 6;
}

message WriteDungeonTileResponse {
  bool success = 1;
  string error = 2;
  string proposal_id = 3;
}

// ============================================================================
// Sprite Operations
// ============================================================================

message ReadSpriteRequest {
  uint32 sprite_id = 1;
}

message ReadSpriteResponse {
  uint32 sprite_id = 1;
  bytes sprite_data = 2;
  string error = 3;
}

// ============================================================================
// Proposal System
// ============================================================================

message SubmitRomProposalRequest {
  string description = 1;
  string username = 2;
  
  oneof proposal_type {
    WriteBytesRequest write_bytes = 3;
    WriteOverworldTileRequest overworld_tile = 4;
    WriteDungeonTileRequest dungeon_tile = 5;
  }
}

message SubmitRomProposalResponse {
  bool success = 1;
  string proposal_id = 2;
  string error = 3;
}

message GetProposalStatusRequest {
  string proposal_id = 1;
}

message GetProposalStatusResponse {
  string proposal_id = 1;
  string status = 2;  // pending, approved, rejected, applied
  repeated string voters = 3;
  int32 approval_count = 4;
  int32 rejection_count = 5;
}

// ============================================================================
// Version Management
// ============================================================================

message CreateSnapshotRequest {
  string description = 1;
  string username = 2;
  bool is_checkpoint = 3;
}

message CreateSnapshotResponse {
  bool success = 1;
  string snapshot_id = 2;
  string error = 3;
}

message RestoreSnapshotRequest {
  string snapshot_id = 1;
}

message RestoreSnapshotResponse {
  bool success = 1;
  string error = 2;
}

message ListSnapshotsRequest {
  uint32 max_results = 1;  // 0 = all
}

message SnapshotInfo {
  string snapshot_id = 1;
  string description = 2;
  string username = 3;
  int64 timestamp = 4;
  bool is_checkpoint = 5;
  bool is_safe_point = 6;
  uint64 size_bytes = 7;
}

message ListSnapshotsResponse {
  repeated SnapshotInfo snapshots = 1;
  string error = 2;
}