Initial DDC release

internal/config/config.go

@@ -0,0 +1,73 @@
+package config
+
+import (
+	"errors"
+	"fmt"
+	"path/filepath"
+	"time"
+
+	"ddc/internal/preferences"
+)
+
+const (
+	minPasswordLength   = 12
+	defaultLibraryRoots = "/media/blob/TeaNet/Plex;/media/blob/ChaiNet/Plex"
+)
+
+type Settings struct {
+	ListenAddr        string
+	Username          string
+	Password          string
+	CookieSecure      bool
+	SessionTTL        time.Duration
+	TrustProxyHeaders bool
+	DownloadDir       string
+	LibraryRoots      []string
+	Defaults          preferences.Preferences
+}
+
+func Load() (Settings, error) {
+	reader := &envReader{}
+	settings := Settings{
+		ListenAddr:        reader.text("LISTEN_ADDR", ":8080"),
+		Username:          reader.text("AUTH_USERNAME", ""),
+		Password:          reader.text("AUTH_PASSWORD", ""),
+		CookieSecure:      reader.boolean("COOKIE_SECURE", true),
+		SessionTTL:        time.Duration(reader.integer("SESSION_TTL_HOURS", 12)) * time.Hour,
+		TrustProxyHeaders: reader.boolean("TRUST_PROXY_HEADERS", false),
+		DownloadDir:       filepath.Clean(reader.text("DOWNLOAD_DIR", "/data/downloads")),
+		Defaults: preferences.Preferences{
+			MaxConcurrentDownloads: reader.integer("MAX_CONCURRENT_DOWNLOADS", 2),
+			MinFreeGB:              reader.integer("MIN_FREE_GB", 10),
+			AllowedPorts:           reader.ports("ALLOWED_PORTS", "80,443"),
+			AutoExtract:            true,
+			CleanupAfterMove:       true,
+		},
+	}
+	rawRoots := reader.text("LIBRARY_ROOTS", defaultLibraryRoots)
+	if reader.err != nil {
+		return Settings{}, reader.err
+	}
+
+	roots, err := parseLibraryRoots(rawRoots)
+	if err != nil {
+		return Settings{}, err
+	}
+	settings.LibraryRoots = roots
+
+	return settings, settings.validate()
+}
+
+func (settings Settings) validate() error {
+	switch {
+	case settings.Username == "":
+		return errors.New("AUTH_USERNAME is required")
+	case len(settings.Password) < minPasswordLength:
+		return fmt.Errorf("AUTH_PASSWORD must be at least %d characters", minPasswordLength)
+	case !filepath.IsAbs(settings.DownloadDir):
+		return errors.New("DOWNLOAD_DIR must be an absolute path")
+	case settings.SessionTTL <= 0:
+		return errors.New("SESSION_TTL_HOURS must be greater than zero")
+	}
+	return settings.Defaults.Validate()
+}