syntax = "proto3";

package usage.v1;

option go_package = "github.com/gitpod-io/gitpod/usage-api/v1";

service BillingService {
  // ReconcileInvoices retrieves current credit balance and reflects it in billing system.
  // Internal RPC, not intended for general consumption.
  rpc ReconcileInvoices(ReconcileInvoicesRequest) returns (ReconcileInvoicesResponse) {};

  // FinalizeInvoice marks all sessions occurring in the given Stripe invoice as
  // having been invoiced.
  rpc FinalizeInvoice(FinalizeInvoiceRequest) returns (FinalizeInvoiceResponse) {};

  // CancelSubscription cancels a stripe subscription in our system
  // Called by a stripe webhook
  rpc CancelSubscription(CancelSubscriptionRequest) returns (CancelSubscriptionResponse) {};

  // GetStripeCustomer retrieves a Stripe Customer
  rpc GetStripeCustomer(GetStripeCustomerRequest) returns (GetStripeCustomerResponse) {};

  rpc CreateStripeCustomer(CreateStripeCustomerRequest) returns (CreateStripeCustomerResponse) {};

  rpc CreateStripeSubscription(CreateStripeSubscriptionRequest) returns (CreateStripeSubscriptionResponse) {};

  // GetStripeSubscription without passing in the `status` will return uncancelled subscriptions
  // Stripe returns a list which may include more than one, but we will throw an error in that case
  rpc GetStripeSubscription(GetStripeSubscriptionRequest) returns (GetStripeSubscriptionResponse) {};
}

message ReconcileInvoicesRequest {}

message ReconcileInvoicesResponse {}

message FinalizeInvoiceRequest {
  string invoice_id = 1;
}

message FinalizeInvoiceResponse {
}

message CancelSubscriptionRequest {
  string subscription_id = 1;
}

message CancelSubscriptionResponse {
}

message GetStripeCustomerRequest {
  oneof identifier {
    string attribution_id = 1;
    string stripe_customer_id = 2;
  }
}

message GetStripeCustomerResponse {
  StripeCustomer customer = 1;
  string attribution_id = 2;
}

message StripeCustomer {
  string id = 1;
  string currency = 2;
}

message CreateStripeCustomerRequest {
  string attribution_id = 1;

  // name is the customer name
  string name = 2;
  string email = 3;
  string currency = 4;
}

message CreateStripeCustomerResponse {
  StripeCustomer customer = 1;
}

message CreateStripeSubscriptionRequest {
  string attribution_id = 1;
  string setup_intent_id = 2;
  int64 usage_limit = 3;
}

message CreateStripeSubscriptionResponse {
  StripeSubscription subscription = 1;
}

message StripeSubscription {
  string id = 1;
}

message GetStripeSubscriptionRequest {
  string attribution_id = 1;
  string status = 2;
}

message GetStripeSubscriptionResponse {
  string subscription_id = 1;
}