// Package config loads OpenMail configuration from the environment.
// Twelve-factor style: everything via env vars, sane defaults for local dev.
package config

import (
	"os"
)

type Config struct {
	HTTPAddr    string // OPENMAIL_HTTP_ADDR, e.g. ":8080"
	DatabaseURL string // DATABASE_URL, e.g. postgres://user:pass@host:5432/openmail
	SMTPAddr    string // OPENMAIL_SMTP_ADDR, inbound :25 listener
	AdminToken  string // OPENMAIL_ADMIN_TOKEN, bootstrap bearer until DB-backed api_keys land
}

func Load() Config {
	return Config{
		HTTPAddr:    envOr("OPENMAIL_HTTP_ADDR", ":8080"),
		DatabaseURL: os.Getenv("DATABASE_URL"),
		SMTPAddr:    envOr("OPENMAIL_SMTP_ADDR", ":25"),
		AdminToken:  os.Getenv("OPENMAIL_ADMIN_TOKEN"),
	}
}

func envOr(key, def string) string {
	if v := os.Getenv(key); v != "" {
		return v
	}
	return def
}