Accounts service (#65)

* Update checkout action

* Accounts service

Author: lukasbindreiter

.github/workflows/buf.yaml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Buf build/lint/format/breaking/push
         uses: bufbuild/buf-action@v1
         with:

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
   - repo: https://github.com/bufbuild/buf
-    rev: v1.71.0
+    rev: v1.72.0
     hooks:
     - id: buf-lint
     - id: buf-format

apis/accounts/v1alpha1/account.proto

@@ -0,0 +1,76 @@
+// Public API for resolving account details associated with an authenticated request.
+
+edition = "2023";
+
+package accounts.v1alpha1;
+
+import "buf/validate/validate.proto";
+
+option features.field_presence = IMPLICIT;
+
+// GetAccountDetailsRequest requests details about the account associated with the calling credential.
+message GetAccountDetailsRequest {}
+
+// AccountDetails is a minimal view of the account associated with an authenticated request.
+message AccountDetails {
+  string user_name = 1;
+  string email = 2;
+  string organization_name = 3;
+  string organization_slug = 4;
+  // The authentication method used to authenticate the request.
+  AuthenticationMethod active_authentication_method = 5;
+}
+
+// AuthenticationMethod describes the credential used to authenticate the request.
+message AuthenticationMethod {
+  option (buf.validate.message).oneof = {
+    fields: [
+      "api_key",
+      "jwt"
+    ]
+    required: true
+  };
+  option (buf.validate.message).cel = {
+    id: "authentication_method.type_matches_details"
+    message: "authentication method type must match its details"
+    expression: "(this.type == 1 && has(this.api_key)) || (this.type == 2 && has(this.jwt))"
+  };
+
+  // Type identifies the kind of credential used to authenticate the request.
+  enum Type {
+    TYPE_UNSPECIFIED = 0;
+    TYPE_API_KEY = 1;
+    TYPE_JWT = 2;
+  }
+
+  Type type = 1 [(buf.validate.field).enum = {
+    defined_only: true
+    not_in: [0]
+  }];
+  APIKeyDetails api_key = 2;
+  JWTDetails jwt = 3;
+}
+
+// APIKeyDetails describes the API key used for the request without exposing its secret or internal identifier.
+message APIKeyDetails {
+  string name = 1;
+  string description = 2;
+  // The non-secret identifier embedded in the API key.
+  string public_identifier = 3;
+}
+
+// JWTDetails describes the verified JWT without exposing the token or subject and session identifiers.
+message JWTDetails {
+  // The verified issuer. For Clerk-authenticated requests, this is the Clerk issuer URL.
+  string issuer = 1 [(buf.validate.field).string = {
+    min_len: 1
+    uri: true
+  }];
+}
+
+// AccountService exposes information about the account associated with an authenticated request.
+service AccountService {
+  // GetAccountDetails resolves the calling credential to its effective account details.
+  // Requests without valid authentication fail with UNAUTHENTICATED.
+  rpc GetAccountDetails(GetAccountDetailsRequest) returns (AccountDetails) {}
+}

apis/accounts/v1alpha1/billing.proto

@@ -0,0 +1,103 @@
+// Public API for reading subscription plan and usage information.
+
+edition = "2023";
+
+package accounts.v1alpha1;
+
+import "buf/validate/validate.proto";
+import "google/protobuf/timestamp.proto";
+
+option features.field_presence = IMPLICIT;
+
+// SubscriptionTier identifies the type of subscription an organization has.
+enum SubscriptionTier {
+  SUBSCRIPTION_TIER_UNSPECIFIED = 0;
+  SUBSCRIPTION_TIER_FREE = 1;
+  SUBSCRIPTION_TIER_PAID = 2;
+  SUBSCRIPTION_TIER_CUSTOM = 3;
+}
+
+// BillingCadence is the period in which the base subscription and add-ons are billed.
+enum BillingCadence {
+  BILLING_CADENCE_UNSPECIFIED = 0;
+  BILLING_CADENCE_MONTHLY = 1;
+  BILLING_CADENCE_YEARLY = 2;
+}
+
+// Unit identifies the unit in which a usage metric is measured.
+enum Unit {
+  UNIT_UNSPECIFIED = 0;
+  UNIT_NO_UNIT = 1;
+  UNIT_BYTES = 2;
+  UNIT_SECONDS = 3;
+}
+
+// MetricAggregation describes how the current value of a metric was aggregated.
+enum MetricAggregation {
+  METRIC_AGGREGATION_UNSPECIFIED = 0;
+  METRIC_AGGREGATION_TOTAL = 1;
+  METRIC_AGGREGATION_USAGE_PERIOD = 2;
+}
+
+// BillingPeriod describes the time range and anchor of a billing period.
+message BillingPeriod {
+  google.protobuf.Timestamp start = 1;
+  google.protobuf.Timestamp end = 2;
+  google.protobuf.Timestamp anchor = 3;
+}
+
+// Plan describes the active subscription plan of an organization.
+message Plan {
+  SubscriptionTier tier = 1;
+  repeated string add_ons = 2;
+  BillingCadence billing_cadence = 3;
+  BillingPeriod subscription_billing_period = 4;
+  BillingPeriod usage_billing_period = 5;
+  // Set when a canceled subscription remains valid until the given time.
+  google.protobuf.Timestamp valid_until = 6;
+}
+
+// UsageRecord is the value of a metric at a specific time.
+message UsageRecord {
+  google.protobuf.Timestamp timestamp = 1;
+  int64 value = 2;
+  int64 cumulative_value = 3;
+}
+
+// UsageHistory contains the historical values and billing periods of a metric.
+message UsageHistory {
+  repeated BillingPeriod usage_periods = 1;
+  repeated UsageRecord records = 2;
+}
+
+// UsageMetric describes the current and historical consumption of an organization metric.
+message UsageMetric {
+  string key = 1;
+  Unit unit = 2;
+  // Unset when the metric is unlimited.
+  int64 limit = 3 [features.field_presence = EXPLICIT];
+  int64 value = 4;
+  MetricAggregation aggregation = 5;
+  UsageHistory history = 6;
+}
+
+// GetActivePlanRequest requests the active plan of the calling organization.
+message GetActivePlanRequest {}
+
+// GetUsageReportRequest requests current usage and, optionally, historical values.
+message GetUsageReportRequest {
+  // The number of history days to return. Zero omits history.
+  uint64 history_days = 1 [(buf.validate.field).uint64.lte = 365];
+}
+
+// UsageReport contains the usage metrics tracked for an organization.
+message UsageReport {
+  repeated UsageMetric metrics = 1;
+  BillingPeriod usage_period = 2;
+}
+
+// BillingService exposes subscription plan and usage information.
+service BillingService {
+  rpc GetActivePlan(GetActivePlanRequest) returns (Plan) {}
+  rpc GetUsageReport(GetUsageReportRequest) returns (UsageReport) {}
+}

apis/authentication/v1alpha1/authentication.proto

@@ -2,8 +2,8 @@
 version: v2
 deps:
   - name: buf.build/bufbuild/protovalidate
-    commit: 50325440f8f24053b047484a6bf60b76
-    digest: b5:74cb6f5c0853c3c10aafc701614194bbd63326bdb8ef4068214454b8894b03ba4113e04b3a33a8321cdf05336e37db4dc14a5e2495db8462566914f36086ba31
+    commit: 435963d1631043e694e56e6bcc3c79c3
+    digest: b5:f4ea07ad2dd94bd7243562f9908b9fb104feef8076040c89d9f7c1dedc074de4d4ce2b997686ef4400f3eccb765a7cfc20ed4acdd70b9a3699351245c61dba97
   - name: buf.build/googleapis/googleapis
     commit: c17df5b2beca46928cc87d5656bd5343
     digest: b5:648a01e0170d4512dea7d564016165decd1ed6e34bef79fe54753e51ad7e27545709ad9157d7551270147d551155c595a2fb0bf5bb33b1c83040ddbce915c604