conf

type APIConfig struct {
	// The port to expose the API on.
	Port int `json:"port"`
}

type Config interface {
	GetLoggingConfig() LoggingConfig
	GetDBConfig() DBConfig
	GetSyncConfig() SyncConfig
	GetFeaturesConfig() FeaturesConfig
	GetSchedulerConfig() SchedulerConfig
	GetKPIsConfig() KPIsConfig
	GetMonitoringConfig() MonitoringConfig
	GetMQTTConfig() MQTTConfig
	GetAPIConfig() APIConfig
	// Check if the configuration is valid.
	Validate() error
}

type DBConfig struct {
	Host     string `json:"host"`
	Port     int    `json:"port"`
	Database string `json:"database"`
	User     string `json:"user"`
	Password string `json:"password"`
}

type DependencyConfig struct {
	Sync struct {
		OpenStack struct {
			Nova struct {
				ObjectTypes []string `json:"types,omitempty"`
			} `json:"nova,omitempty"`
			Placement struct {
				ObjectTypes []string `json:"types,omitempty"`
			} `json:"placement,omitempty"`
		} `json:"openstack,omitempty"`
		Prometheus struct {
			Metrics []struct {
				Alias string `json:"alias,omitempty"`
				Type  string `json:"type,omitempty"`
			} `json:"metrics,omitempty"`
		} `json:"prometheus,omitempty"`
	}
	Features FeaturesDependency `json:"features,omitempty"`
}

type DependencyGraph[K comparable] struct {
	// Dependencies between the individual steps.
	Dependencies map[K][]K
	// List of individual steps.
	Nodes []K
}

type FeatureExtractorConfig struct {
	// The name of the extractor.
	Name string `json:"name"`
	// Custom options for the extractor, as a raw yaml map.
	Options RawOpts `json:"options,omitempty"`
	// The dependencies this extractor needs.
	DependencyConfig `json:"dependencies,omitempty"`
}

type FeaturesConfig struct {
	Plugins []FeatureExtractorConfig `json:"plugins"`
}

type FeaturesDependency struct {
	ExtractorNames []string `json:"extractors,omitempty"`
}

type JsonOpts[Options any] struct {
	// Options loaded from a json config using the Load method.
	Options Options
}

type KPIPluginConfig struct {
	// The name of the KPI plugin.
	Name string `json:"name"`
	// Custom options for the KPI plugin, as a raw json map.
	Options RawOpts `json:"options,omitempty"`
	// The dependencies this KPI plugin needs.
	DependencyConfig `json:"dependencies,omitempty"`
}

type KPIsConfig struct {
	// KPI plugins to use.
	Plugins []KPIPluginConfig `json:"plugins"`
}

type LoggingConfig struct {
	// The log level to use (debug, info, warn, error).
	LevelStr string `json:"level"`
	// The log format to use (json, text).
	Format string `json:"format"`
}

type MQTTConfig struct {
	// The URL of the MQTT broker to use for mqtt.
	URL string `json:"url"`
	// Credentials for the MQTT broker.
	Username string `json:"username"`
	Password string `json:"password"`
}

type MonitoringConfig struct {
	// The labels to add to all metrics.
	Labels map[string]string `json:"labels"`

	// The port to expose the metrics on.
	Port int `json:"port"`
}

type RawOpts struct {
	// contains filtered or unexported fields
}

type SSOConfig struct {
	Cert    string `json:"cert,omitempty"`
	CertKey string `json:"certKey,omitempty"`

	// If the certificate is self-signed, we need to skip verification.
	SelfSigned bool `json:"selfSigned,omitempty"`
}

type SchedulerAPIConfig struct {
	// If request bodies should be logged out.
	// This feature is intended for debugging purposes only.
	LogRequestBodies bool `json:"logRequestBodies"`
}

type SchedulerConfig struct {
	// Scheduler step plugins by their name.
	Plugins []SchedulerStepConfig `json:"plugins"`

	API SchedulerAPIConfig `json:"api"`
}

type SchedulerStepConfig struct {
	// The name of the step.
	Name string `json:"name"`
	// Custom options for the step, as a raw yaml map.
	Options RawOpts `json:"options,omitempty"`
	// The dependencies this step needs.
	DependencyConfig `json:"dependencies,omitempty"`
	// The validations to use for this step.
	DisabledValidations SchedulerStepDisabledValidationsConfig `json:"disabledValidations,omitempty"`
}

type SchedulerStepDisabledValidationsConfig struct {
	// Whether to validate that no hosts are removed or added from the scheduler
	// step. This should only be disabled for scheduler steps that remove hosts.
	// Thus, if no value is provided, the default is false.
	SameHostNumberInOut bool `json:"sameHostNumberInOut,omitempty"`
}

type SyncConfig struct {
	Prometheus SyncPrometheusConfig `json:"prometheus"`
	OpenStack  SyncOpenStackConfig  `json:"openstack"`
}

type SyncOpenStackConfig struct {
	// Configuration for the keystone service.
	Keystone SyncOpenStackKeystoneConfig `json:"keystone"`
	// Configuration for the nova service.
	Nova SyncOpenStackNovaConfig `json:"nova"`
	// Configuration for the placement service.
	Placement SyncOpenStackPlacementConfig `json:"placement"`
}

type SyncOpenStackKeystoneConfig struct {
	// The URL of the keystone service.
	URL string `json:"url"`
	// The SSO certificate to use. If none is given, we won't
	// use SSO to connect to the openstack services.
	SSO SSOConfig `json:"sso,omitempty"`
	// The OpenStack username (OS_USERNAME in openstack cli).
	OSUsername string `json:"username"`
	// The OpenStack password (OS_PASSWORD in openstack cli).
	OSPassword string `json:"password"`
	// The OpenStack project name (OS_PROJECT_NAME in openstack cli).
	OSProjectName string `json:"projectName"`
	// The OpenStack user domain name (OS_USER_DOMAIN_NAME in openstack cli).
	OSUserDomainName string `json:"userDomainName"`
	// The OpenStack project domain name (OS_PROJECT_DOMAIN_NAME in openstack cli).
	OSProjectDomainName string `json:"projectDomainName"`
}

type SyncOpenStackNovaConfig struct {
	// Availability of the service, such as "public", "internal", or "admin".
	Availability string `json:"availability"`
	// The types of resources to sync.
	Types []string `json:"types"`
}

type SyncOpenStackPlacementConfig struct {
	// Availability of the service, such as "public", "internal", or "admin".
	Availability string `json:"availability"`
	// The types of resources to sync.
	Types []string `json:"types"`
}

type SyncPrometheusConfig struct {
	Hosts   []SyncPrometheusHostConfig   `json:"hosts,omitempty"`
	Metrics []SyncPrometheusMetricConfig `json:"metrics,omitempty"`
}

type SyncPrometheusHostConfig struct {
	// The name of the prometheus host.
	Name string `json:"name"`
	// The URL of the prometheus host.
	URL string `json:"url"`
	// The SSO configuration for this host.
	SSO SSOConfig `json:"sso,omitempty"`
	// The types of metrics this host provides.
	ProvidedMetricTypes []string `json:"provides"`
}

type SyncPrometheusMetricConfig struct {
	// The query to use to fetch the metric.
	Query string `json:"query"`
	// Especially when a more complex query is used, we need an alias
	// under which the table will be stored in the database.
	// Additionally, this alias is used to reference the metric in the
	// feature extractors as dependency.
	Alias string `json:"alias"`
	// The type of the metric, mapping directly to a metric model.
	Type string `json:"type"`

	TimeRangeSeconds  *int `json:"timeRangeSeconds,omitempty"`
	IntervalSeconds   *int `json:"intervalSeconds,omitempty"`
	ResolutionSeconds *int `json:"resolutionSeconds,omitempty"`
}