package hws

import (
	"time"

	"git.haelnorr.com/h/golib/env"
)

type Config struct {
	Host              string        `ezconf:"HWS_HOST,description:Host to listen on,default:127.0.0.1"`
	Port              uint64        `ezconf:"HWS_PORT,description:Port to listen on,default:3000"`
	GZIP              bool          `ezconf:"HWS_GZIP,description:Flag for GZIP compression on requests,default:false"`
	ReadHeaderTimeout time.Duration `ezconf:"HWS_READ_HEADER_TIMEOUT,description:Timeout for reading request headers in seconds,default:2"`
	WriteTimeout      time.Duration `ezconf:"HWS_WRITE_TIMEOUT,description:Timeout for writing requests in seconds,default:10"`
	IdleTimeout       time.Duration `ezconf:"HWS_IDLE_TIMEOUT,description:Timeout for idle connections in seconds,default:120"`
	ShutdownDelay     time.Duration `ezconf:"HWS_SHUTDOWN_DELAY,description:Delay in seconds before server shuts down when Shutdown is called,default:5"`
}

// ConfigFromEnv returns a Config struct loaded from the environment variables
func ConfigFromEnv() (*Config, error) {
	cfg := &Config{
		Host:              env.String("HWS_HOST", "127.0.0.1"),
		Port:              env.UInt64("HWS_PORT", 3000),
		GZIP:              env.Bool("HWS_GZIP", false),
		ReadHeaderTimeout: time.Duration(env.Int("HWS_READ_HEADER_TIMEOUT", 2)) * time.Second,
		WriteTimeout:      time.Duration(env.Int("HWS_WRITE_TIMEOUT", 10)) * time.Second,
		IdleTimeout:       time.Duration(env.Int("HWS_IDLE_TIMEOUT", 120)) * time.Second,
		ShutdownDelay:     time.Duration(env.Int("HWS_SHUTDOWN_DELAY", 5)) * time.Second,
	}

	return cfg, nil
}