server

type Config struct {
	Port           string         `env:"PORT" envDefault:"8989"`
	BaseURL        string         `env:"BASE_URL,required"`
	Whoop          Whoop          `envPrefix:"WHOOP_"`
	RateLimit      RateLimit      `envPrefix:"RATE_"`
	WhoopRateLimit WhoopRateLimit `envPrefix:"WHOOP_RATE_LIMIT_"`
	Redis          Redis          `envPrefix:"REDIS_"`
	Database       Database       `envPrefix:"DATABASE_"`
}

type Database struct {
	URL string `env:"URL,required"`
}

type RateLimit struct {
	Limit float64 `env:"LIMIT" envDefault:"10"`
	Burst int     `env:"BURST" envDefault:"20"`
}

type Redis struct {
	URL string `env:"URL"`
}

type Whoop struct {
	ClientID     string `env:"CLIENT_ID,required"`
	ClientSecret string `env:"CLIENT_SECRET,required"`
}

type WhoopRateLimit struct {
	// per-user daily limit
	PerUserDayLimit int `env:"PER_USER_DAY_LIMIT" envDefault:"1000"`

	// w/ safety buffers from WHOOP's 100/min, 10k/day
	GlobalMinuteLimit int `env:"GLOBAL_MINUTE_LIMIT" envDefault:"95"`
	GlobalDayLimit    int `env:"GLOBAL_DAY_LIMIT" envDefault:"9950"`

	// dynamic per-user minute limiting
	ReserveBuffer         int `env:"RESERVE_BUFFER" envDefault:"5"`            // reserve for new users joining
	MinPerUserMinuteLimit int `env:"MIN_PER_USER_MINUTE_LIMIT" envDefault:"5"` // floor (never go below this)
	ActiveWindowSeconds   int `env:"ACTIVE_WINDOW_SECONDS" envDefault:"60"`    // window for tracking active users
}