package config

import (
	"log"
	"os"
	"strconv"
)

type Config struct {
	Port           string
	DataDir        string
	StorageDir     string
	JWTSecret      string
	JWTExpirySecs  int
	DBPath         string
	ThumbnailDir   string
	TrashDir       string
	VersionsDir    string
	BackupDir      string
	MaxLoginAttempts int
	LockoutSeconds   int
	OnlyOfficeJWT    string
	OnlyOfficeHost   string
	PublicURL        string
	InternalAPIURL   string
}

func Load() *Config {
	cfg := &Config{
		Port:             getEnv("PORT", "5827"),
		DataDir:          getEnv("DATA_DIR", "/app/data"),
		StorageDir:       getEnv("STORAGE_DIR", "/storage"),
		JWTSecret:        getEnv("JWT_SECRET", ""),
		JWTExpirySecs:    getEnvInt("JWT_EXPIRY_SECS", 900),       // 15 minutes
		MaxLoginAttempts: getEnvInt("MAX_LOGIN_ATTEMPTS", 5),
		LockoutSeconds:   getEnvInt("LOCKOUT_SECONDS", 300),       // 5 minutes
		OnlyOfficeJWT:    getEnv("ONLYOFFICE_JWT_SECRET", ""),
		OnlyOfficeHost:   getEnv("ONLYOFFICE_HOST", "office.elijahkuntz.com"),
		PublicURL:        getEnv("PUBLIC_URL", ""),
		InternalAPIURL:   getEnv("INTERNAL_API_URL", "http://192.168.50.81:5827/api"),
	}

	if cfg.InternalAPIURL == "" && cfg.PublicURL != "" {
		cfg.InternalAPIURL = cfg.PublicURL
	}

	cfg.DBPath = cfg.DataDir + "/drive.db"
	cfg.ThumbnailDir = cfg.DataDir + "/thumbnails"
	cfg.TrashDir = cfg.StorageDir + "/.trash"
	cfg.VersionsDir = cfg.StorageDir + "/.versions"
	cfg.BackupDir = cfg.StorageDir + "/.backups"

	if cfg.OnlyOfficeJWT == "" {
		log.Println("WARNING: ONLYOFFICE_JWT_SECRET not set \u2014 Document Server requests will NOT be authenticated.")
		log.Println("         Anyone with network access to the Document Server can open/edit documents.")
	}

	return cfg
}

func getEnv(key, fallback string) string {
	if value, ok := os.LookupEnv(key); ok {
		return value
	}
	return fallback
}

func getEnvInt(key string, fallback int) int {
	if value, ok := os.LookupEnv(key); ok {
		if intVal, err := strconv.Atoi(value); err == nil {
			return intVal
		}
	}
	return fallback
}