config

type AccessControlConfig struct {
	Enabled bool
	StoreID string
	ModelID string
}

type AuthnConfig struct {

	// Method is the authentication method that should be enforced (e.g. 'none', 'preshared',
	// 'oidc')
	Method                   string
	*AuthnOIDCConfig         `mapstructure:"oidc"`
	*AuthnPresharedKeyConfig `mapstructure:"preshared"`
}

type AuthnOIDCConfig struct {
	Issuer         string
	IssuerAliases  []string
	Subjects       []string
	Audience       string
	ClientIDClaims []string
}

type AuthnPresharedKeyConfig struct {
	// Keys define the preshared keys to verify authn tokens against.
	Keys []string `json:"-"` // private field, won't be logged
}

type CacheConfig struct {
	Limit uint32
}

type CheckIteratorCacheConfig struct {
	Enabled    bool
	MaxResults uint32
}

type CheckQueryCache struct {
	Enabled bool
	TTL     time.Duration
}

type Config struct {

	// ListObjectsDeadline defines the maximum amount of time to accumulate ListObjects results
	// before the server will respond. This is to protect the server from misuse of the
	// ListObjects endpoints. It cannot be larger than HTTPConfig.UpstreamTimeout.
	ListObjectsDeadline time.Duration

	// ListObjectsMaxResults defines the maximum number of results to accumulate
	// before the non-streaming ListObjects API will respond to the client.
	// This is to protect the server from misuse of the ListObjects endpoints.
	ListObjectsMaxResults uint32

	// ListUsersDeadline defines the maximum amount of time to accumulate ListUsers results
	// before the server will respond. This is to protect the server from misuse of the
	// ListUsers endpoints. It cannot be larger than the configured server's request timeout (RequestTimeout or HTTPConfig.UpstreamTimeout).
	ListUsersDeadline time.Duration

	// ListUsersMaxResults defines the maximum number of results to accumulate
	// before the non-streaming ListUsers API will respond to the client.
	// This is to protect the server from misuse of the ListUsers endpoints.
	ListUsersMaxResults uint32

	// MaxTuplesPerWrite defines the maximum number of tuples per Write endpoint.
	MaxTuplesPerWrite int

	// MaxChecksPerBatchCheck defines the maximum number of tuples
	// that can be passed in each BatchCheck request.
	MaxChecksPerBatchCheck uint32

	// MaxConcurrentChecksPerBatchCheck defines the maximum number of checks
	// that can be run in simultaneously
	MaxConcurrentChecksPerBatchCheck uint32

	// MaxTypesPerAuthorizationModel defines the maximum number of type definitions per
	// authorization model for the WriteAuthorizationModel endpoint.
	MaxTypesPerAuthorizationModel int

	// MaxAuthorizationModelSizeInBytes defines the maximum size in bytes allowed for
	// persisting an Authorization Model.
	MaxAuthorizationModelSizeInBytes int

	// MaxConcurrentReadsForListObjects defines the maximum number of concurrent database reads
	// allowed in ListObjects queries
	MaxConcurrentReadsForListObjects uint32

	// MaxConcurrentReadsForCheck defines the maximum number of concurrent database reads allowed in
	// Check queries
	MaxConcurrentReadsForCheck uint32

	// MaxConcurrentReadsForListUsers defines the maximum number of concurrent database reads
	// allowed in ListUsers queries
	MaxConcurrentReadsForListUsers uint32

	// MaxConditionEvaluationCost defines the maximum cost for CEL condition evaluation before a request returns an error
	MaxConditionEvaluationCost uint64

	// ChangelogHorizonOffset is an offset in minutes from the current time. Changes that occur
	// after this offset will not be included in the response of ReadChanges.
	ChangelogHorizonOffset int

	// Experimentals is a list of the experimental features to enable in the OpenFGA server.
	Experimentals []string

	// AccessControl is the configuration for the access control feature.
	AccessControl AccessControlConfig

	// ResolveNodeLimit indicates how deeply nested an authorization model can be before a query
	// errors out.
	ResolveNodeLimit uint32

	// ResolveNodeBreadthLimit indicates how many nodes on a given level can be evaluated
	// concurrently in a query
	ResolveNodeBreadthLimit uint32

	// RequestTimeout configures request timeout.  If both HTTP upstream timeout and request timeout are specified,
	// request timeout will be prioritized
	RequestTimeout time.Duration

	// ContextPropagationToDatastore enables propagation of a requests context to the datastore,
	// thereby receiving API cancellation signals
	ContextPropagationToDatastore bool

	Datastore                     DatastoreConfig
	GRPC                          GRPCConfig
	HTTP                          HTTPConfig
	Authn                         AuthnConfig
	Log                           LogConfig
	Trace                         TraceConfig
	Playground                    PlaygroundConfig
	Profiler                      ProfilerConfig
	Metrics                       MetricConfig
	Cache                         CacheConfig
	CheckIteratorCache            CheckIteratorCacheConfig
	CheckQueryCache               CheckQueryCache
	DispatchThrottling            DispatchThrottlingConfig
	CheckDispatchThrottling       DispatchThrottlingConfig
	ListObjectsDispatchThrottling DispatchThrottlingConfig
	ListUsersDispatchThrottling   DispatchThrottlingConfig

	RequestDurationDatastoreQueryCountBuckets []string
	RequestDurationDispatchCountBuckets       []string
}

type DatastoreConfig struct {
	// Engine is the datastore engine to use (e.g. 'memory', 'postgres', 'mysql', 'sqlite')
	Engine   string
	URI      string `json:"-"` // private field, won't be logged
	Username string
	Password string `json:"-"` // private field, won't be logged

	// MaxCacheSize is the maximum number of authorization models that will be cached in memory.
	MaxCacheSize int

	// MaxOpenConns is the maximum number of open connections to the database.
	MaxOpenConns int

	// MaxIdleConns is the maximum number of connections to the datastore in the idle connection
	// pool.
	MaxIdleConns int

	// ConnMaxIdleTime is the maximum amount of time a connection to the datastore may be idle.
	ConnMaxIdleTime time.Duration

	// ConnMaxLifetime is the maximum amount of time a connection to the datastore may be reused.
	ConnMaxLifetime time.Duration

	// Metrics is configuration for the Datastore metrics.
	Metrics DatastoreMetricsConfig
}

type DatastoreMetricsConfig struct {
	// Enabled enables export of the Datastore metrics.
	Enabled bool
}

type DispatchThrottlingConfig struct {
	Enabled      bool
	Frequency    time.Duration
	Threshold    uint32
	MaxThreshold uint32
}

type GRPCConfig struct {
	Addr string
	TLS  *TLSConfig
}

type HTTPConfig struct {
	Enabled bool
	Addr    string
	TLS     *TLSConfig

	// UpstreamTimeout is the timeout duration for proxying HTTP requests upstream
	// to the grpc endpoint. It cannot be smaller than Config.ListObjectsDeadline.
	UpstreamTimeout time.Duration

	CORSAllowedOrigins []string
	CORSAllowedHeaders []string
}

type LogConfig struct {
	// Format is the log format to use in the log output (e.g. 'text' or 'json')
	Format string

	// Level is the log level to use in the log output (e.g. 'none', 'debug', or 'info')
	Level string

	// Format of the timestamp in the log output (e.g. 'Unix'(default) or 'ISO8601')
	TimestampFormat string
}

type MetricConfig struct {
	Enabled             bool
	Addr                string
	EnableRPCHistograms bool
}

type OTLPTraceConfig struct {
	Endpoint string
	TLS      OTLPTraceTLSConfig
}

type OTLPTraceTLSConfig struct {
	Enabled bool
}

type PlaygroundConfig struct {
	Enabled bool
	Port    int
}

type ProfilerConfig struct {
	Enabled bool
	Addr    string
}

type TLSConfig struct {
	Enabled  bool
	CertPath string `mapstructure:"cert"`
	KeyPath  string `mapstructure:"key"`
}

type TraceConfig struct {
	Enabled     bool
	OTLP        OTLPTraceConfig `mapstructure:"otlp"`
	SampleRatio float64
	ServiceName string
}