demo.proto

syntax = "proto3";

package hipstershop;

// -----------------Cart service-----------------

service CartService {
    rpc AddItem(AddItemRequest) returns (Empty) {}
    rpc GetCart(GetCartRequest) returns (Cart) {}
    rpc EmptyCart(EmptyCartRequest) returns (Empty) {}
}

message CartItem {
    string product_id = 1;
    int32  quantity = 2;
}

message AddItemRequest {
    string user_id = 1;
    CartItem item = 2;
}

message EmptyCartRequest {
    string user_id = 1;
}

message GetCartRequest {
    string user_id = 1;
}

message Cart {
    string user_id = 1;
    repeated CartItem items = 2;
}

message Empty {}

// ---------------Recommendation service----------

service RecommendationService {
  rpc ListRecommendations(ListRecommendationsRequest) returns (ListRecommendationsResponse){}
}

message ListRecommendationsRequest {
    string user_id = 1;
    repeated string product_ids = 2;
}

message ListRecommendationsResponse {
    repeated string product_ids = 1;
}

// ---------------Product Catalog----------------

service ProductCatalogService {
    rpc ListProducts(Empty) returns (ListProductsResponse) {}
    rpc GetProduct(GetProductRequest) returns (Product) {}
    rpc SearchProducts(SearchProductsRequest) returns (SearchProductsResponse) {}
}

message Product {
    string id = 1;
    string name = 2;
    string description = 3;
    string picture = 4;
    Money price_usd = 5;

    // Categories such as "vintage" or "gardening" that can be used to look up
    // other related products.
    repeated string categories = 6;