service

type Account interface {
	GetUsername() string
	GetCreatedAt() time.Time
	Verify(password []byte) bool
}

type Accounts interface {
	Find(ctx context.Context, username string) (Account, error)
	Create(ctx context.Context, username string, password []byte) (Account, error)

	HealthCheck() HealthCheck
}

type Health interface {
	Check(ctx context.Context) HealthAggregation
}

type HealthAggregation struct {
	Health     HealthResult                 `yaml:"health"`
	Components []HealthAggregationComponent `yaml:"components"`
}

type HealthAggregationComponent struct {
	Name   string       `yaml:"name"`
	Health HealthResult `yaml:"health"`
}

type HealthCheck func(ctx context.Context) (string, bool)

type HealthResult string

type UsernameGenerationStrategy string

type UsernameGenerator interface {
	Generate() (string, error)
}