syntax = "proto3";

package cloudprint;

option go_package = "github.com/cloudprint/cloudprint-backend/proto/generated";

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

// ============ 通用消息 ============

message Empty {}

message StatusResponse {
  int32 code = 1;
  string message = 2;
}

// ============ 用户相关 ============

message User {
  int32 id = 1;
  string openid = 2;
  string nickname = 3;
  string avatar = 4;
  double balance = 5;
  google.protobuf.Timestamp created_at = 6;
}

message LoginRequest {
  string code = 1;  // 微信授权码
}

message LoginResponse {
  string access_token = 1;
  string refresh_token = 2;
  User user = 3;
}

message RefreshRequest {
  string refresh_token = 1;
}

message RefreshResponse {
  string access_token = 1;
}

message GetUserInfoRequest {}

message UpdateUserRequest {
  string nickname = 1;
  string avatar = 2;
}

// ============ 文件相关 ============

message FileInfo {
  int32 id = 1;
  string file_name = 2;
  string file_path = 3;
  string file_type = 4;
  int64 file_size = 5;
  string uploader_type = 6;
  int32 uploader_id = 7;
  google.protobuf.Timestamp created_at = 8;
}

message UploadRequest {
  string file_name = 1;
  string file_type = 2;
  int64 file_size = 3;
  bytes data = 4;
  bool is_last_chunk = 5;
  string chunk_id = 6;
  int32 chunk_index = 7;
  int32 total_chunks = 8;
}

message UploadResponse {
  int32 file_id = 1;
  string file_path = 2;
  string file_url = 3;
}

message GetFileRequest {
  int32 file_id = 1;
}

message FileData {
  bytes data = 1;
  bool is_last = 2;
}

message DeleteFileRequest {
  int32 file_id = 1;
}

message WatermarkRequest {
  int32 file_id = 1;
  string text = 2;
  float opacity = 3;
  int32 position = 4;  // 1: 左上 2: 右上 3: 左下 4: 右下 5: 居中
  int32 font_size = 5;
}

message WatermarkResponse {
  int32 file_id = 1;
  string file_path = 2;
}

message GetFileListRequest {
  string uploader_type = 1;
  int32 uploader_id = 2;
  int32 page = 3;
  int32 page_size = 4;
}

message FileListResponse {
  repeated FileInfo files = 1;
  int32 total = 2;
}

// ============ 订单相关 ============

message Order {
  int32 id = 1;
  string order_no = 2;
  int32 user_id = 3;
  int32 status = 4;
  double total_amount = 5;
  string remark = 6;
  google.protobuf.Timestamp created_at = 7;
  google.protobuf.Timestamp paid_at = 8;
  repeated OrderItem items = 9;
}

message OrderItem {
  int32 id = 1;
  int32 order_id = 2;
  int32 file_id = 3;
  FileInfo file = 4;
  int32 printer_id = 5;
  int32 copies = 6;
  bool color = 7;
  bool duplex = 8;
  string page_range = 9;
  double price = 10;
}

message CreateOrderRequest {
  repeated CreateOrderItem items = 1;
  string remark = 2;
}

message CreateOrderItem {
  int32 file_id = 1;
  int32 printer_id = 2;
  int32 copies = 3;
  bool color = 4;
  bool duplex = 5;
  string page_range = 6;
}

message CreateOrderResponse {
  string order_no = 1;
  double total_amount = 2;
}

message GetOrderRequest {
  string order_no = 1;
}

message GetOrderListRequest {
  int32 user_id = 1;
  int32 status = 2;
  int32 page = 3;
  int32 page_size = 4;
}

message OrderListResponse {
  repeated Order orders = 1;
  int32 total = 2;
}

message UpdateOrderStatusRequest {
  string order_no = 1;
  int32 status = 2;
}

message CancelOrderRequest {
  string order_no = 1;
}

// ============ 打印机相关 ============

message Printer {
  int32 id = 1;
  string name = 2;
  string display_name = 3;
  bool is_active = 4;
  int32 status = 5;  // 0: 空闲 1: 打印中 2: 离线
  google.protobuf.Timestamp last_heartbeat = 6;
}

message GetPrintersRequest {}

message PrinterListResponse {
  repeated Printer printers = 1;
}

message GetPrinterStatusRequest {
  int32 printer_id = 1;
}

message PrinterStatusResponse {
  Printer printer = 1;
  int32 queue_count = 2;
}

message RegisterPrinterRequest {
  string name = 1;
  string display_name = 2;
  string api_key = 3;
}

message RegisterPrinterResponse {
  int32 printer_id = 1;
  string token = 2;
}

message PrinterHeartbeatRequest {
  int32 printer_id = 1;
  int32 status = 2;
  string token = 3;
}

// ============ 打印任务相关 ============

message PrintJob {
  int32 id = 1;
  string job_no = 2;
  int32 printer_id = 3;
  int32 order_item_id = 4;
  string status = 5;  // pending/printing/completed/failed/cancelled
  int32 progress = 6;
  string error_msg = 7;
  google.protobuf.Timestamp started_at = 8;
  google.protobuf.Timestamp completed_at = 9;
  OrderItem order_item = 10;
}

message SubmitPrintJobRequest {
  int32 order_item_id = 1;
  int32 printer_id = 2;
  string file_path = 3;
  int32 copies = 4;
  bool color = 5;
  bool duplex = 6;
  string page_range = 7;
}

message SubmitPrintJobResponse {
  string job_no = 1;
}

message CancelPrintJobRequest {
  string job_no = 1;
}

message SubscribeJobsRequest {
  int32 printer_id = 1;
  string token = 2;
}

message ReportJobStatusRequest {
  string job_no = 1;
  string status = 2;
  int32 progress = 3;
  string error_msg = 4;
}

// ============ 文库相关 ============

message LibraryCategory {
  int32 id = 1;
  string name = 2;
  string icon = 3;
  int32 sort_order = 4;
}

message LibraryFile {
  int32 id = 1;
  int32 category_id = 2;
  int32 file_id = 3;
  string title = 4;
  string description = 5;
  int32 page_count = 6;
  int32 download_count = 7;
  FileInfo file = 8;
  google.protobuf.Timestamp created_at = 9;
}

message GetCategoriesRequest {}

message CategoryListResponse {
  repeated LibraryCategory categories = 1;
}

message GetLibraryFilesRequest {
  int32 category_id = 1;
  int32 page = 2;
  int32 page_size = 3;
}

message LibraryFileListResponse {
  repeated LibraryFile files = 1;
  int32 total = 2;
}

message UploadLibraryFileRequest {
  int32 category_id = 1;
  string title = 2;
  string description = 3;
  bytes data = 4;
  string file_name = 5;
  string file_type = 6;
}

message UploadLibraryFileResponse {
  int32 library_file_id = 1;
}

message DeleteLibraryFileRequest {
  int32 library_file_id = 1;
}

// ============ 价目表相关 ============

message PriceItem {
  int32 id = 1;
  string name = 2;
  string type = 3;
  double price = 4;
  string unit = 5;
  bool color_enabled = 6;
  bool is_active = 7;
}

message GetPriceListRequest {}

message PriceListResponse {
  repeated PriceItem items = 1;
}

message CreatePriceItemRequest {
  string name = 1;
  string type = 2;
  double price = 3;
  string unit = 4;
  bool color_enabled = 5;
}

message UpdatePriceItemRequest {
  int32 id = 1;
  string name = 2;
  string type = 3;
  double price = 4;
  string unit = 5;
  bool color_enabled = 6;
  bool is_active = 7;
}

// ============ 支付相关 ============

message WxPayRequest {
  string order_no = 1;
  double amount = 2;
  string description = 3;
  string openid = 4;
  string client_ip = 5;
}

message WxPayResponse {
  string prepay_id = 1;
  string code_url = 2;
  string mweb_url = 3;
}

message QueryPayStatusRequest {
  string order_no = 1;
}

message PayStatusResponse {
  int32 status = 1;  // 0: 待支付 1: 支付中 2: 成功 3: 失败
  string transaction_id = 2;
}

message PayCallbackRequest {
  string body = 1;
}

message PayCallbackResponse {
  string return_code = 1;
  string return_msg = 2;
}

message PayByBalanceRequest {
  string order_no = 1;
  int32 user_id = 2;
}

// ============ 管理后台相关 ============

message Admin {
  int32 id = 1;
  string username = 2;
  string nickname = 3;
  int32 role = 4;
  google.protobuf.Timestamp created_at = 5;
}

message AdminLoginRequest {
  string username = 1;
  string password = 2;
}

message AdminLoginResponse {
  string access_token = 1;
  Admin admin = 2;
}

message GetStatisticsRequest {}

message Statistics {
  int32 total_users = 1;
  int32 total_orders = 2;
  int32 today_orders = 3;
  double today_revenue = 4;
  int32 pending_orders = 5;
  int32 active_printers = 6;
}

// ============ 服务定义 ============

service AuthService {
  rpc Login(LoginRequest) returns (LoginResponse);
  rpc RefreshToken(RefreshRequest) returns (RefreshResponse);
  rpc GetUserInfo(GetUserInfoRequest) returns (User);
  rpc UpdateUser(UpdateUserRequest) returns (User);
}

service FileService {
  rpc Upload(stream UploadRequest) returns (UploadResponse);
  rpc GetFile(GetFileRequest) returns (stream FileData);
  rpc DeleteFile(DeleteFileRequest) returns (Empty);
  rpc AddWatermark(WatermarkRequest) returns (WatermarkResponse);
  rpc GetFileList(GetFileListRequest) returns (FileListResponse);
}

service OrderService {
  rpc CreateOrder(CreateOrderRequest) returns (CreateOrderResponse);
  rpc GetOrder(GetOrderRequest) returns (Order);
  rpc GetOrderList(GetOrderListRequest) returns (OrderListResponse);
  rpc UpdateOrderStatus(UpdateOrderStatusRequest) returns (Empty);
  rpc CancelOrder(CancelOrderRequest) returns (Empty);
}

service PrintService {
  rpc GetPrinters(GetPrintersRequest) returns (PrinterListResponse);
  rpc GetPrinterStatus(GetPrinterStatusRequest) returns (PrinterStatusResponse);
  rpc RegisterPrinter(RegisterPrinterRequest) returns (RegisterPrinterResponse);
  rpc PrinterHeartbeat(PrinterHeartbeatRequest) returns (Empty);
  rpc SubmitPrintJob(SubmitPrintJobRequest) returns (SubmitPrintJobResponse);
  rpc CancelPrintJob(CancelPrintJobRequest) returns (Empty);
  rpc SubscribeJobs(SubscribeJobsRequest) returns (stream PrintJob);
  rpc ReportJobStatus(ReportJobStatusRequest) returns (Empty);
}

service LibraryService {
  rpc GetCategories(GetCategoriesRequest) returns (CategoryListResponse);
  rpc GetFiles(GetLibraryFilesRequest) returns (LibraryFileListResponse);
  rpc UploadFile(stream UploadLibraryFileRequest) returns (UploadLibraryFileResponse);
  rpc DeleteFile(DeleteLibraryFileRequest) returns (Empty);
}

service PriceService {
  rpc GetPriceList(GetPriceListRequest) returns (PriceListResponse);
  rpc CreatePriceItem(CreatePriceItemRequest) returns (PriceItem);
  rpc UpdatePriceItem(UpdatePriceItemRequest) returns (PriceItem);
}

service PayService {
  rpc CreateWxPayOrder(WxPayRequest) returns (WxPayResponse);
  rpc QueryPayStatus(QueryPayStatusRequest) returns (PayStatusResponse);
  rpc HandlePayCallback(PayCallbackRequest) returns (PayCallbackResponse);
  rpc PayByBalance(PayByBalanceRequest) returns (StatusResponse);
}

service AdminService {
  rpc Login(AdminLoginRequest) returns (AdminLoginResponse);
  rpc GetStatistics(GetStatisticsRequest) returns (Statistics);
}