add products

api/main.proto

@@ -17,6 +17,11 @@ service CRM {
       get: "/positions/{id}"
     };
   }
+  rpc GetProduct(GetProductReq) returns (ProductRsp) {
+    option (google.api.http) = {
+      get: "/products/{id}"
+    };
+  }
 }
 
 message GetCatalogReq {}
@@ -75,3 +80,11 @@ message Characteristic {
   string name = 1;
   string value = 2;
 }
+
+message GetProductReq{
+  int64 id = 1;
+}
+
+message ProductRsp {
+  Product product = 1;
+}

internal/app/server.go

@@ -32,3 +32,11 @@ func (s *Server) GetPositions(ctx context.Context, req *crm.GetPositionsReq) (*c
 	}
 	return &crm.PositionsRsp{Products: products}, nil
 }
+
+func (s *Server) GetProduct(ctx context.Context, req *crm.GetProductReq) (*crm.ProductRsp, error) {
+	product, err := s.storage.GetProduct(ctx, req.Id)
+	if err != nil {
+		return nil, err
+	}
+	return &crm.ProductRsp{Product: product}, nil
+}

internal/models/storage/interface.go

@@ -19,4 +19,5 @@ type Breadcrumb struct {
 type IStorage interface {
 	GetCatalog(ctx context.Context) ([]*crm.Category, error)
 	GetPositions(ctx context.Context, id int64) ([]*crm.Product, error)
+	GetProduct(ctx context.Context, id int64) (*crm.Product, error)
 }

internal/models/storage/storage_file/storage.go

@@ -5,9 +5,14 @@ import (
 	crm "cake_crm/proto"
 	"context"
 	"encoding/json"
+	"errors"
 	"os"
 )
 
+var (
+	ErrProductNotFound = errors.New("product not found")
+)
+
 type storageFile struct{}
 
 func NewStorageFile() storage.IStorage {
@@ -43,3 +48,20 @@ func (s *storageFile) GetPositions(_ context.Context, id int64) ([]*crm.Product,
 	}
 	return res, nil
 }
+
+func (s *storageFile) GetProduct(_ context.Context, id int64) (*crm.Product, error) {
+	data, err := os.ReadFile("resources/products.json")
+	if err != nil {
+		return nil, err
+	}
+	var products []*crm.Product
+	if err := json.Unmarshal(data, &products); err != nil {
+		return nil, err
+	}
+	for _, product := range products {
+		if product.Id == id {
+			return product, nil
+		}
+	}
+	return nil, ErrProductNotFound
+}

proto/main.pb.go

@@ -634,6 +634,100 @@ func (x *Characteristic) GetValue() string {
 	return ""
 }
 
+type GetProductReq struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Id int64 `protobuf:"varint,1,opt,name=id,proto3" json:"id,omitempty"`
+}
+
+func (x *GetProductReq) Reset() {
+	*x = GetProductReq{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_main_proto_msgTypes[10]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GetProductReq) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GetProductReq) ProtoMessage() {}
+
+func (x *GetProductReq) ProtoReflect() protoreflect.Message {
+	mi := &file_main_proto_msgTypes[10]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GetProductReq.ProtoReflect.Descriptor instead.
+func (*GetProductReq) Descriptor() ([]byte, []int) {
+	return file_main_proto_rawDescGZIP(), []int{10}
+}
+
+func (x *GetProductReq) GetId() int64 {
+	if x != nil {
+		return x.Id
+	}
+	return 0
+}
+
+type ProductRsp struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Product *Product `protobuf:"bytes,1,opt,name=product,proto3" json:"product,omitempty"`
+}
+
+func (x *ProductRsp) Reset() {
+	*x = ProductRsp{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_main_proto_msgTypes[11]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ProductRsp) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ProductRsp) ProtoMessage() {}
+
+func (x *ProductRsp) ProtoReflect() protoreflect.Message {
+	mi := &file_main_proto_msgTypes[11]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ProductRsp.ProtoReflect.Descriptor instead.
+func (*ProductRsp) Descriptor() ([]byte, []int) {
+	return file_main_proto_rawDescGZIP(), []int{11}
+}
+
+func (x *ProductRsp) GetProduct() *Product {
+	if x != nil {
+		return x.Product
+	}
+	return nil
+}
+
 var File_main_proto protoreflect.FileDescriptor
 
 var file_main_proto_rawDesc = []byte{
@@ -702,19 +796,31 @@ var file_main_proto_rawDesc = []byte{
 	0x61, 0x63, 0x74, 0x65, 0x72, 0x69, 0x73, 0x74, 0x69, 0x63, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61,
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+	0x03, 0x52, 0x02, 0x69, 0x64, 0x22, 0x3a, 0x0a, 0x0a, 0x50, 0x72, 0x6f, 0x64, 0x75, 0x63, 0x74,
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+	0x6f, 0x6e, 0x73, 0x2f, 0x7b, 0x69, 0x64, 0x7d, 0x12, 0x55, 0x0a, 0x0a, 0x47, 0x65, 0x74, 0x50,
+	0x72, 0x6f, 0x64, 0x75, 0x63, 0x74, 0x12, 0x18, 0x2e, 0x63, 0x72, 0x61, 0x62, 0x73, 0x2e, 0x63,
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+	0x1a, 0x15, 0x2e, 0x63, 0x72, 0x61, 0x62, 0x73, 0x2e, 0x63, 0x72, 0x6d, 0x2e, 0x50, 0x72, 0x6f,
+	0x64, 0x75, 0x63, 0x74, 0x52, 0x73, 0x70, 0x22, 0x16, 0x82, 0xd3, 0xe4, 0x93, 0x02, 0x10, 0x12,
+	0x0e, 0x2f, 0x70, 0x72, 0x6f, 0x64, 0x75, 0x63, 0x74, 0x73, 0x2f, 0x7b, 0x69, 0x64, 0x7d, 0x42,
+	0x09, 0x5a, 0x07, 0x70, 0x6b, 0x67, 0x2f, 0x63, 0x72, 0x6d, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x33,
 }
 
 var (
@@ -729,7 +835,7 @@ func file_main_proto_rawDescGZIP() []byte {
 	return file_main_proto_rawDescData
 }
 
-var file_main_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
+var file_main_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
 var file_main_proto_goTypes = []interface{}{
 	(*GetCatalogReq)(nil),   // 0: crabs.crm.GetCatalogReq
 	(*CatalogRsp)(nil),      // 1: crabs.crm.CatalogRsp
@@ -741,6 +847,8 @@ var file_main_proto_goTypes = []interface{}{
 	(*Variant)(nil),         // 7: crabs.crm.Variant
 	(*Property)(nil),        // 8: crabs.crm.Property
 	(*Characteristic)(nil),  // 9: crabs.crm.Characteristic
+	(*GetProductReq)(nil),   // 10: crabs.crm.GetProductReq
+	(*ProductRsp)(nil),      // 11: crabs.crm.ProductRsp
 }
 var file_main_proto_depIdxs = []int32{
 	2,  // 0: crabs.crm.CatalogRsp.categories:type_name -> crabs.crm.Category
@@ -750,15 +858,18 @@ var file_main_proto_depIdxs = []int32{
 	7,  // 4: crabs.crm.Product.variants:type_name -> crabs.crm.Variant
 	9,  // 5: crabs.crm.Product.characteristics:type_name -> crabs.crm.Characteristic
 	8,  // 6: crabs.crm.Variant.properties:type_name -> crabs.crm.Property
-	0, // 7: crabs.crm.CRM.GetCatalog:input_type -> crabs.crm.GetCatalogReq
+	5,  // 7: crabs.crm.ProductRsp.product:type_name -> crabs.crm.Product
-	3, // 8: crabs.crm.CRM.GetPositions:input_type -> crabs.crm.GetPositionsReq
+	0,  // 8: crabs.crm.CRM.GetCatalog:input_type -> crabs.crm.GetCatalogReq
-	1, // 9: crabs.crm.CRM.GetCatalog:output_type -> crabs.crm.CatalogRsp
+	3,  // 9: crabs.crm.CRM.GetPositions:input_type -> crabs.crm.GetPositionsReq
-	4, // 10: crabs.crm.CRM.GetPositions:output_type -> crabs.crm.PositionsRsp
+	10, // 10: crabs.crm.CRM.GetProduct:input_type -> crabs.crm.GetProductReq
-	9, // [9:11] is the sub-list for method output_type
+	1,  // 11: crabs.crm.CRM.GetCatalog:output_type -> crabs.crm.CatalogRsp
-	7, // [7:9] is the sub-list for method input_type
+	4,  // 12: crabs.crm.CRM.GetPositions:output_type -> crabs.crm.PositionsRsp
-	7, // [7:7] is the sub-list for extension type_name
+	11, // 13: crabs.crm.CRM.GetProduct:output_type -> crabs.crm.ProductRsp
-	7, // [7:7] is the sub-list for extension extendee
+	11, // [11:14] is the sub-list for method output_type
-	0, // [0:7] is the sub-list for field type_name
+	8,  // [8:11] is the sub-list for method input_type
+	8,  // [8:8] is the sub-list for extension type_name
+	8,  // [8:8] is the sub-list for extension extendee
+	0,  // [0:8] is the sub-list for field type_name
 }
 
 func init() { file_main_proto_init() }
@@ -887,6 +998,30 @@ func file_main_proto_init() {
 				return nil
 			}
 		}
+		file_main_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetProductReq); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_main_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ProductRsp); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -894,7 +1029,7 @@ func file_main_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_main_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   10,
+			NumMessages:   12,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

proto/main.pb.gw.go

@@ -101,6 +101,58 @@ func local_request_CRM_GetPositions_0(ctx context.Context, marshaler runtime.Mar
 
 }
 
+func request_CRM_GetProduct_0(ctx context.Context, marshaler runtime.Marshaler, client CRMClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq GetProductReq
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["id"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
+	}
+
+	protoReq.Id, err = runtime.Int64(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
+	}
+
+	msg, err := client.GetProduct(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_CRM_GetProduct_0(ctx context.Context, marshaler runtime.Marshaler, server CRMServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq GetProductReq
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["id"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
+	}
+
+	protoReq.Id, err = runtime.Int64(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
+	}
+
+	msg, err := server.GetProduct(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
 // RegisterCRMHandlerServer registers the http handlers for service CRM to "mux".
 // UnaryRPC     :call CRMServer directly.
 // StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
@@ -157,6 +209,31 @@ func RegisterCRMHandlerServer(ctx context.Context, mux *runtime.ServeMux, server
 
 	})
 
+	mux.Handle("GET", pattern_CRM_GetProduct_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		var err error
+		var annotatedContext context.Context
+		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/crabs.crm.CRM/GetProduct", runtime.WithHTTPPathPattern("/products/{id}"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_CRM_GetProduct_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_CRM_GetProduct_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
@@ -242,6 +319,28 @@ func RegisterCRMHandlerClient(ctx context.Context, mux *runtime.ServeMux, client
 
 	})
 
+	mux.Handle("GET", pattern_CRM_GetProduct_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		var err error
+		var annotatedContext context.Context
+		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/crabs.crm.CRM/GetProduct", runtime.WithHTTPPathPattern("/products/{id}"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_CRM_GetProduct_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_CRM_GetProduct_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	return nil
 }
 
@@ -249,10 +348,14 @@ var (
 	pattern_CRM_GetCatalog_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0}, []string{"catalog"}, ""))
 
 	pattern_CRM_GetPositions_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 1, 0, 4, 1, 5, 1}, []string{"positions", "id"}, ""))
+
+	pattern_CRM_GetProduct_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 1, 0, 4, 1, 5, 1}, []string{"products", "id"}, ""))
 )
 
 var (
 	forward_CRM_GetCatalog_0 = runtime.ForwardResponseMessage
 
 	forward_CRM_GetPositions_0 = runtime.ForwardResponseMessage
+
+	forward_CRM_GetProduct_0 = runtime.ForwardResponseMessage
 )

proto/main.swagger.json

@@ -63,6 +63,37 @@
           "CRM"
         ]
       }
+    },
+    "/products/{id}": {
+      "get": {
+        "operationId": "CRM_GetProduct",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/crmProductRsp"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/runtimeError"
+            }
+          }
+        },
+        "parameters": [
+          {
+            "name": "id",
+            "in": "path",
+            "required": true,
+            "type": "string",
+            "format": "int64"
+          }
+        ],
+        "tags": [
+          "CRM"
+        ]
+      }
     }
   },
   "definitions": {
@@ -190,6 +221,14 @@
         }
       }
     },
+    "crmProductRsp": {
+      "type": "object",
+      "properties": {
+        "product": {
+          "$ref": "#/definitions/crmProduct"
+        }
+      }
+    },
     "crmProperty": {
       "type": "object",
       "properties": {

proto/main_grpc.pb.go

@@ -21,6 +21,7 @@ const _ = grpc.SupportPackageIsVersion7
 const (
 	CRM_GetCatalog_FullMethodName   = "/crabs.crm.CRM/GetCatalog"
 	CRM_GetPositions_FullMethodName = "/crabs.crm.CRM/GetPositions"
+	CRM_GetProduct_FullMethodName   = "/crabs.crm.CRM/GetProduct"
 )
 
 // CRMClient is the client API for CRM service.
@@ -29,6 +30,7 @@ const (
 type CRMClient interface {
 	GetCatalog(ctx context.Context, in *GetCatalogReq, opts ...grpc.CallOption) (*CatalogRsp, error)
 	GetPositions(ctx context.Context, in *GetPositionsReq, opts ...grpc.CallOption) (*PositionsRsp, error)
+	GetProduct(ctx context.Context, in *GetProductReq, opts ...grpc.CallOption) (*ProductRsp, error)
 }
 
 type cRMClient struct {
@@ -57,12 +59,22 @@ func (c *cRMClient) GetPositions(ctx context.Context, in *GetPositionsReq, opts
 	return out, nil
 }
 
+func (c *cRMClient) GetProduct(ctx context.Context, in *GetProductReq, opts ...grpc.CallOption) (*ProductRsp, error) {
+	out := new(ProductRsp)
+	err := c.cc.Invoke(ctx, CRM_GetProduct_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // CRMServer is the server API for CRM service.
 // All implementations must embed UnimplementedCRMServer
 // for forward compatibility
 type CRMServer interface {
 	GetCatalog(context.Context, *GetCatalogReq) (*CatalogRsp, error)
 	GetPositions(context.Context, *GetPositionsReq) (*PositionsRsp, error)
+	GetProduct(context.Context, *GetProductReq) (*ProductRsp, error)
 	mustEmbedUnimplementedCRMServer()
 }
 
@@ -76,6 +88,9 @@ func (UnimplementedCRMServer) GetCatalog(context.Context, *GetCatalogReq) (*Cata
 func (UnimplementedCRMServer) GetPositions(context.Context, *GetPositionsReq) (*PositionsRsp, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetPositions not implemented")
 }
+func (UnimplementedCRMServer) GetProduct(context.Context, *GetProductReq) (*ProductRsp, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method GetProduct not implemented")
+}
 func (UnimplementedCRMServer) mustEmbedUnimplementedCRMServer() {}
 
 // UnsafeCRMServer may be embedded to opt out of forward compatibility for this service.
@@ -125,6 +140,24 @@ func _CRM_GetPositions_Handler(srv interface{}, ctx context.Context, dec func(in
 	return interceptor(ctx, in, info, handler)
 }
 
+func _CRM_GetProduct_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(GetProductReq)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(CRMServer).GetProduct(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: CRM_GetProduct_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(CRMServer).GetProduct(ctx, req.(*GetProductReq))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 // CRM_ServiceDesc is the grpc.ServiceDesc for CRM service.
 // It's only intended for direct use with grpc.RegisterService,
 // and not to be introspected or modified (even as a copy)
@@ -140,6 +173,10 @@ var CRM_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "GetPositions",
 			Handler:    _CRM_GetPositions_Handler,
 		},
+		{
+			MethodName: "GetProduct",
+			Handler:    _CRM_GetProduct_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: "main.proto",