package console

import (
	"log"

	"github.com/carlosframework/platform/internal/appconfig"
)

// appRegionsOn is spec §5.6: the switch AND a named home.
func (s *Server) appRegionsOn() bool {
	return s.cfg.AppRegions && s.cfg.HomeRegion != ""
}

// expectedSecretsFP is the fingerprint a box must publish to receive
// placed instances (spec R9): the console's own CARLOS_SECRETS_PUBKEY,
// the key the CLI seals config to. "" means the console cannot judge, and
// then no coded region is eligible for automatic placement.
func (s *Server) expectedSecretsFP() string {
	if s.cfg.SecretsPub == "" {
		return ""
	}
	fp, err := appconfig.PublicFingerprint(s.cfg.SecretsPub)
	if err != nil {
		return ""
	}
	return fp
}

// appRegion reads the app's stored region through the test seam when one
// is set.
func (s *Server) appRegion(accountID int64, app string) (string, string, error) {
	if s.appRegionOf != nil {
		return s.appRegionOf(accountID, app)
	}
	return s.store.AppRegion(accountID, app)
}

// logRegionConfig names, once at startup, each configuration that leaves
// part of the feature off. The secrets-key line does not depend on the
// switch: the guess endpoint answers with the switch off too (R9).
func logRegionConfig(cfg Config) {
	if cfg.AppRegions && cfg.HomeRegion == "" {
		log.Print("console: CONSOLE_APP_REGIONS=on but CONSOLE_HOME_REGION is unset, so app regions stay off until the home is named")
	}
	if cfg.SecretsPub == "" {
		log.Print("console: CARLOS_SECRETS_PUBKEY is unset, so no region outside the home can be chosen automatically")
	}
}