syntax = "proto3";

package api.file.v1;

option go_package = "rag/file-system/api/file/v1";

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

service FileService {
  // File operations
  rpc UploadFile (UploadFileRequest) returns (UploadFileResponse) {
    option (google.api.http) = { post: "/files/upload" body: "*" };
  }
  rpc DownloadFile (DownloadFileRequest) returns (DownloadFileResponse) {
    option (google.api.http) = { get: "/files/download" };
  }
  rpc ListFiles (ListFilesRequest) returns (ListFilesResponse) {
    option (google.api.http) = { get: "/files/list" };
  }
  rpc GetFilePreview (GetFilePreviewRequest) returns (GetFilePreviewResponse) {
    option (google.api.http) = { get: "/files/preview" };
  }
  rpc GetFileContent (GetFileContentRequest) returns (GetFileContentResponse) {
    option (google.api.http) = { get: "/files/content" };
  }
  rpc DeleteFile (DeleteFileRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = { delete: "/files/delete" };
  }

  // Multipart upload
  rpc InitMultipartUpload (InitMultipartRequest) returns (InitMultipartResponse) {
    option (google.api.http) = { post: "/files/multipart/init" body: "*" };
  }
  rpc UploadPart (UploadPartRequest) returns (UploadPartResponse) {
    option (google.api.http) = { put: "/files/multipart/part" body: "*" };
  }
  rpc CompleteMultipartUpload (CompleteMultipartRequest) returns (CompleteMultipartResponse) {
    option (google.api.http) = { post: "/files/multipart/complete" body: "*" };
  }
  rpc AbortMultipartUpload (AbortMultipartRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = { post: "/files/multipart/abort" body: "*" };
  }

  // Bucket operations
  rpc CreateBucket (CreateBucketRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = { post: "/buckets" body: "*" };
  }
  rpc ListBuckets (google.protobuf.Empty) returns (ListBucketsResponse) {
    option (google.api.http) = { get: "/buckets" };
  }
  rpc DeleteBucket (DeleteBucketRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = { delete: "/buckets" };
  }

  // Folder operations
  rpc CreateFolder (CreateFolderRequest) returns (Folder) {
    option (google.api.http) = { post: "/folders" body: "*" };
  }
  rpc GetFolderTree (GetFolderTreeRequest) returns (GetFolderTreeResponse) {
    option (google.api.http) = { get: "/folders/tree" };
  }
  rpc GetFolder (GetFolderRequest) returns (FolderWithChildren) {
    option (google.api.http) = { get: "/folders/{id}" };
  }
  rpc RenameFolder (RenameFolderRequest) returns (Folder) {
    option (google.api.http) = { put: "/folders/{id}" body: "*" };
  }
  rpc DeleteFolder (DeleteFolderRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = { delete: "/folders/{id}" };
  }
  rpc UploadToFolder (UploadToFolderRequest) returns (FileMeta) {
    option (google.api.http) = { post: "/folders/{folder_id}/files" body: "*" };
  }
  rpc MoveFile (MoveFileRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = { post: "/files/{id}/move" body: "*" };
  }

  // Share operations
  rpc CreateShare (CreateShareRequest) returns (ShareLink) {
    option (google.api.http) = { post: "/share" body: "*" };
  }
  rpc DeleteShare (DeleteShareRequest) returns (google.protobuf.Empty) {
    option (google.api.http) = { delete: "/share/{id}" };
  }
  rpc GetShareInfo (GetShareInfoRequest) returns (ShareInfo) {
    option (google.api.http) = { get: "/share/{token}" };
  }
  rpc DownloadShare (DownloadShareRequest) returns (DownloadShareResponse) {
    option (google.api.http) = { post: "/share/{token}/download" body: "*" };
  }
}

// File messages
message UploadFileRequest {
  string bucket_name = 1;
  string object_key = 2;
  bytes data = 3;
  string content_type = 4;
}

message UploadFileResponse {
  string message = 1;
  string object_key = 2;
}

message DownloadFileRequest {
  string bucket_name = 1;
  string object_key = 2;
}

message DownloadFileResponse {
  bytes data = 1;
  string content_type = 2;
  string file_name = 3;
}

message ListFilesRequest {
  string bucket_name = 1;
  string prefix = 2;
  int32 max_keys = 3;
  string continuation_token = 4;
}

message FileInfo {
  string key = 1;
  int64 size = 2;
  string last_modified = 3;
  string etag = 4;
}

message ListFilesResponse {
  repeated FileInfo files = 1;
  string next_continuation_token = 2;
}

message GetFilePreviewRequest {
  string bucket_name = 1;
  string object_key = 2;
}

message GetFilePreviewResponse {
  string presigned_url = 1;
}

message GetFileContentRequest {
  string bucket_name = 1;
  string object_key = 2;
}

message GetFileContentResponse {
  string content = 1;
}

message DeleteFileRequest {
  string bucket_name = 1;
  string object_key = 2;
}

// Multipart messages
message InitMultipartRequest {
  string bucket_name = 1;
  string object_key = 2;
}

message InitMultipartResponse {
  string upload_id = 1;
}

message UploadPartRequest {
  string bucket_name = 1;
  string object_key = 2;
  string upload_id = 3;
  int32 part_number = 4;
  bytes data = 5;
}

message UploadPartResponse {
  string etag = 1;
}

message CompletedPart {
  int32 part_number = 1;
  string etag = 2;
}

message CompleteMultipartRequest {
  string bucket_name = 1;
  string object_key = 2;
  string upload_id = 3;
  repeated CompletedPart parts = 4;
}

message CompleteMultipartResponse {
  string location = 1;
}

message AbortMultipartRequest {
  string bucket_name = 1;
  string object_key = 2;
  string upload_id = 3;
}

// Bucket messages
message CreateBucketRequest {
  string name = 1;
}

message ListBucketsResponse {
  repeated string buckets = 1;
}

message DeleteBucketRequest {
  string name = 1;
}

// Folder messages
message Folder {
  string id = 1;
  string parent_id = 2;
  string name = 3;
  string owner_id = 4;
  string created_at = 5;
  string updated_at = 6;
}

message FolderWithChildren {
  Folder folder = 1;
  repeated Folder sub_folders = 2;
  repeated FileMeta files = 3;
}

message CreateFolderRequest {
  string parent_id = 1;
  string name = 2;
  string owner_id = 3;
}

message GetFolderTreeRequest {
  string owner_id = 1;
}

message GetFolderTreeResponse {
  repeated Folder folders = 1;
}

message GetFolderRequest {
  string id = 1;
  string owner_id = 2;
}

message RenameFolderRequest {
  string id = 1;
  string name = 2;
  string owner_id = 3;
}

message DeleteFolderRequest {
  string id = 1;
  string owner_id = 2;
}

message FileMeta {
  string id = 1;
  string folder_id = 2;
  string name = 3;
  string s3_key = 4;
  string s3_bucket = 5;
  int64 size = 6;
  string content_type = 7;
  string owner_id = 8;
  string created_at = 9;
  string updated_at = 10;
}

message UploadToFolderRequest {
  string folder_id = 1;
  string file_name = 2;
  bytes data = 3;
  string content_type = 4;
  string owner_id = 5;
}

message MoveFileRequest {
  string id = 1;
  string target_folder_id = 2;
  string owner_id = 3;
}

// Share messages
message ShareLink {
  string id = 1;
  string resource_type = 2;
  string resource_id = 3;
  string token = 4;
  string password = 5;
  string expires_at = 6;
  int32 download_count = 7;
  int32 max_downloads = 8;
  string created_by = 9;
  string created_at = 10;
}

message ShareInfo {
  string token = 1;
  string resource_type = 2;
  string file_name = 3;
  int64 file_size = 4;
  bool has_password = 5;
  string expires_at = 6;
}

message CreateShareRequest {
  string resource_type = 1;
  string resource_id = 2;
  string password = 3;
  string expires_at = 4;
  int32 max_downloads = 5;
  string created_by = 6;
}

message DeleteShareRequest {
  string id = 1;
  string created_by = 2;
}

message GetShareInfoRequest {
  string token = 1;
}

message DownloadShareRequest {
  string token = 1;
  string password = 2;
}

message DownloadShareResponse {
  string presigned_url = 1;
  string file_name = 2;
}