syntax = "proto3";

package purchase;

option go_package = "./pb";

// ==================== Supplier ====================

message SupplierInfo {
  string supplier_id = 1;
  string supplier_name = 2;
  string phone = 3;
  int64 purchase_count = 4;
  string delivered_qty = 5;
  string payable_amount = 6;
  string paid_amount = 7;
  int64 status = 8;
  string remark = 9;
  string created_at = 10;
  string updated_at = 11;
}

message CreateSupplierReq {
  string supplier_name = 1;
  string phone = 2;
  string remark = 3;
}

message UpdateSupplierReq {
  string supplier_id = 1;
  string supplier_name = 2;
  string phone = 3;
  int64 status = 4;
  string remark = 5;
}

message DeleteSupplierReq {
  string supplier_id = 1;
}

message GetSupplierReq {
  string supplier_id = 1;
}

message ListSupplierReq {
  int64 page = 1;
  int64 page_size = 2;
  string supplier_name = 3;
  int64 status = 4;
}

message ListSupplierResp {
  int64 total = 1;
  repeated SupplierInfo list = 2;
}

// ==================== PurchaseOrder ====================

message PurchaseOrderInfo {
  string order_id = 1;
  string order_no = 2;
  string supplier_id = 3;
  string supplier_name = 4;
  string order_date = 5;
  string contract_amount = 6;
  string received_qty = 7;
  string paid_amount = 8;
  int64 payment_status = 9;
  int64 receipt_status = 10;
  string purchase_by = 11;
  string creator = 12;
  string operator = 13;
  int64 status = 14;
  string remark = 15;
  string created_at = 16;
  string updated_at = 17;
  repeated PurchaseOrderDetailInfo details = 18;
}

message PurchaseOrderDetailInfo {
  string detail_id = 1;
  string order_id = 2;
  string product_id = 3;
  string product_name = 4;
  string spec = 5;
  string color = 6;
  string quantity = 7;
  string unit_price = 8;
  string amount = 9;
  string received_qty = 10;
  string remark = 11;
}

message PurchaseOrderDetailReq {
  string product_id = 1;
  string product_name = 2;
  string spec = 3;
  string color = 4;
  string quantity = 5;
  string unit_price = 6;
  string remark = 7;
}

message CreatePurchaseOrderReq {
  string supplier_id = 1;
  string order_date = 2;
  string purchase_by = 3;
  string remark = 4;
  repeated PurchaseOrderDetailReq details = 5;
}

message UpdatePurchaseOrderReq {
  string order_id = 1;
  string supplier_id = 2;
  string order_date = 3;
  string purchase_by = 4;
  string remark = 5;
  repeated PurchaseOrderDetailReq details = 6;
}

message ConfirmPurchaseOrderReq {
  string order_id = 1;
}

message CancelPurchaseOrderReq {
  string order_id = 1;
}

message GetPurchaseOrderReq {
  string order_id = 1;
}

message ListPurchaseOrderReq {
  int64 page = 1;
  int64 page_size = 2;
  string supplier_id = 3;
  int64 status = 4;
  string start_date = 5;
  string end_date = 6;
}

message ListPurchaseOrderResp {
  int64 total = 1;
  repeated PurchaseOrderInfo list = 2;
}

// ==================== PurchaseReceipt ====================

message PurchaseReceiptInfo {
  string receipt_id = 1;
  string receipt_no = 2;
  string order_id = 3;
  string receipt_date = 4;
  string received_by = 5;
  int64 status = 6;
  string remark = 7;
  string created_at = 8;
  repeated PurchaseReceiptDetailInfo details = 9;
}

message PurchaseReceiptDetailInfo {
  string detail_id = 1;
  string receipt_id = 2;
  string order_detail_id = 3;
  string product_id = 4;
  string actual_qty = 5;
  string unit_cost = 6;
  string remark = 7;
}

message PurchaseReceiptDetailReq {
  string order_detail_id = 1;
  string product_id = 2;
  string actual_qty = 3;
  string unit_cost = 4;
  string remark = 5;
}

message CreatePurchaseReceiptReq {
  string order_id = 1;
  string receipt_date = 2;
  string received_by = 3;
  string remark = 4;
  repeated PurchaseReceiptDetailReq details = 5;
}

message ConfirmPurchaseReceiptReq {
  string receipt_id = 1;
}

message GetPurchaseReceiptReq {
  string receipt_id = 1;
}

message ListPurchaseReceiptReq {
  int64 page = 1;
  int64 page_size = 2;
  string order_id = 3;
  int64 status = 4;
  string start_date = 5;
  string end_date = 6;
}

message ListPurchaseReceiptResp {
  int64 total = 1;
  repeated PurchaseReceiptInfo list = 2;
}

// ==================== PurchasePayment ====================

message PurchasePaymentInfo {
  string payment_id = 1;
  string order_id = 2;
  string supplier_id = 3;
  string payment_date = 4;
  string amount = 5;
  string payment_method = 6;
  string operator = 7;
  string remark = 8;
  string created_at = 9;
}

message CreatePurchasePaymentReq {
  string order_id = 1;
  string payment_date = 2;
  string amount = 3;
  string payment_method = 4;
  string remark = 5;
}

message GetPurchasePaymentReq {
  string payment_id = 1;
}

message ListPurchasePaymentReq {
  int64 page = 1;
  int64 page_size = 2;
  string order_id = 3;
  string supplier_id = 4;
  string start_date = 5;
  string end_date = 6;
}

message ListPurchasePaymentResp {
  int64 total = 1;
  repeated PurchasePaymentInfo list = 2;
}

// ==================== InventoryLog ====================

message InventoryLogInfo {
  string log_id = 1;
  string product_id = 2;
  string change_qty = 3;
  string balance_after = 4;
  int64 change_type = 5;
  string ref_type = 6;
  string ref_id = 7;
  string contact_id = 8;
  string log_date = 9;
  string operator = 10;
  string remark = 11;
  string created_at = 12;
}

message ListInventoryLogReq {
  int64 page = 1;
  int64 page_size = 2;
  string product_id = 3;
  string ref_type = 4;
  int64 change_type = 5;
  string start_date = 6;
  string end_date = 7;
}

message ListInventoryLogResp {
  int64 total = 1;
  repeated InventoryLogInfo list = 2;
}

// ==================== Stats ====================

message PurchaseStatsSummaryReq {
  string start_date = 1;
  string end_date = 2;
}

message PurchaseStatsSummaryResp {
  string total_purchase_amount = 1;
  string total_paid_amount = 2;
  string total_unpaid_amount = 3;
  int64 order_count = 4;
  int64 receipt_count = 5;
}

message PurchaseStatsBySupplierItem {
  string supplier_id = 1;
  string supplier_name = 2;
  string purchase_amount = 3;
  string paid_amount = 4;
  int64 order_count = 5;
}

message PurchaseStatsBySupplierResp {
  repeated PurchaseStatsBySupplierItem list = 1;
}

message PurchaseStatsByProductItem {
  string product_id = 1;
  string product_name = 2;
  string spec = 3;
  string color = 4;
  string total_qty = 5;
  string avg_unit_price = 6;
  string total_amount = 7;
}

message PurchaseStatsByProductResp {
  repeated PurchaseStatsByProductItem list = 1;
}

// ==================== Common ====================

message IdResp {
  string id = 1;
}

message Empty {}

// ==================== Service ====================

service PurchaseService {
  // Supplier CRUD
  rpc CreateSupplier(CreateSupplierReq) returns (IdResp);
  rpc UpdateSupplier(UpdateSupplierReq) returns (Empty);
  rpc DeleteSupplier(DeleteSupplierReq) returns (Empty);
  rpc GetSupplier(GetSupplierReq) returns (SupplierInfo);
  rpc ListSupplier(ListSupplierReq) returns (ListSupplierResp);

  // PurchaseOrder CRUD + status
  rpc CreatePurchaseOrder(CreatePurchaseOrderReq) returns (IdResp);
  rpc UpdatePurchaseOrder(UpdatePurchaseOrderReq) returns (Empty);
  rpc ConfirmPurchaseOrder(ConfirmPurchaseOrderReq) returns (Empty);
  rpc CancelPurchaseOrder(CancelPurchaseOrderReq) returns (Empty);
  rpc GetPurchaseOrder(GetPurchaseOrderReq) returns (PurchaseOrderInfo);
  rpc ListPurchaseOrder(ListPurchaseOrderReq) returns (ListPurchaseOrderResp);

  // Receipt
  rpc CreatePurchaseReceipt(CreatePurchaseReceiptReq) returns (IdResp);
  rpc ConfirmPurchaseReceipt(ConfirmPurchaseReceiptReq) returns (Empty);
  rpc GetPurchaseReceipt(GetPurchaseReceiptReq) returns (PurchaseReceiptInfo);
  rpc ListPurchaseReceipt(ListPurchaseReceiptReq) returns (ListPurchaseReceiptResp);

  // Payment
  rpc CreatePurchasePayment(CreatePurchasePaymentReq) returns (IdResp);
  rpc ListPurchasePayment(ListPurchasePaymentReq) returns (ListPurchasePaymentResp);

  // InventoryLog
  rpc ListInventoryLog(ListInventoryLogReq) returns (ListInventoryLogResp);

  // Stats
  rpc GetPurchaseStatsSummary(PurchaseStatsSummaryReq) returns (PurchaseStatsSummaryResp);
  rpc GetPurchaseStatsBySupplier(PurchaseStatsSummaryReq) returns (PurchaseStatsBySupplierResp);
  rpc GetPurchaseStatsByProduct(PurchaseStatsSummaryReq) returns (PurchaseStatsByProductResp);
}