first commit

internal/config/config.go

@@ -0,0 +1,171 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/joho/godotenv"
+)
+
+type LightningConfig struct {
+	Enabled            bool
+	LNbitsURL          string
+	LNbitsInvoiceKey   string
+	PriceYearlySats    int64
+	PriceLifetimeSats  int64
+	InvoiceExpiryMins  int
+}
+
+type NostrConfig struct {
+	Relays              []string
+	UsernameSyncEnabled bool
+	SyncIntervalMins    int
+}
+
+type DMConfig struct {
+	Enabled      bool
+	Nsec         string
+	Kind         int
+	MessagesFile string
+}
+
+type ExpiryConfig struct {
+	ReminderDays    []int
+	GraceDays       int
+	CronHourUTC     int
+}
+
+type WebhookConfig struct {
+	URL            string
+	Secret         string
+	TimeoutSecs    int
+	MaxRetries     int
+}
+
+type Config struct {
+	Domain       string
+	Port         int
+	AdminAPIKey  string
+	FrontendURL  string
+	DatabasePath string
+
+	Lightning LightningConfig
+	Nostr     NostrConfig
+	DM        DMConfig
+	Expiry    ExpiryConfig
+	Webhook   WebhookConfig
+
+	LogLevel          string
+	RateLimitPerMin   int
+	ReservedUsernames []string
+}
+
+func Load() (*Config, error) {
+	_ = godotenv.Load()
+
+	c := &Config{
+		Domain:       env("DOMAIN", ""),
+		Port:         envInt("PORT", 8080),
+		AdminAPIKey:  env("ADMIN_API_KEY", ""),
+		FrontendURL:  env("FRONTEND_URL", ""),
+		DatabasePath: env("DATABASE_PATH", ".data/nip05.db"),
+		Lightning: LightningConfig{
+			Enabled:           envBool("LIGHTNING_ENABLED", true),
+			LNbitsURL:         env("LNBITS_URL", ""),
+			LNbitsInvoiceKey:  env("LNBITS_INVOICE_KEY", ""),
+			PriceYearlySats:   int64(envInt("PRICE_YEARLY_SATS", 1000)),
+			PriceLifetimeSats: int64(envInt("PRICE_LIFETIME_SATS", 10000)),
+			InvoiceExpiryMins: envInt("INVOICE_EXPIRY_MINUTES", 30),
+		},
+		Nostr: NostrConfig{
+			Relays:              csv(env("RELAYS", "")),
+			UsernameSyncEnabled: envBool("USERNAME_SYNC_ENABLED", true),
+			SyncIntervalMins:    envInt("SYNC_INTERVAL_MINUTES", 15),
+		},
+		DM: DMConfig{
+			Enabled:      envBool("DM_ENABLED", true),
+			Nsec:         env("DM_NSEC", ""),
+			Kind:         envInt("DM_KIND", 1059),
+			MessagesFile: env("MESSAGES_FILE", "messages.yaml"),
+		},
+		Expiry: ExpiryConfig{
+			ReminderDays: csvInt(env("EXPIRY_REMINDER_DAYS", "7")),
+			GraceDays:    envInt("USERNAME_GRACE_DAYS", 30),
+			CronHourUTC:  envInt("EXPIRY_CRON_HOUR_UTC", 9),
+		},
+		Webhook: WebhookConfig{
+			URL:         env("WEBHOOK_URL", ""),
+			Secret:      env("WEBHOOK_SECRET", ""),
+			TimeoutSecs: envInt("WEBHOOK_TIMEOUT_SECONDS", 10),
+			MaxRetries:  envInt("WEBHOOK_MAX_RETRIES", 5),
+		},
+		LogLevel:          env("LOG_LEVEL", "info"),
+		RateLimitPerMin:   envInt("RATE_LIMIT_PER_MIN", 30),
+		ReservedUsernames: csv(env("RESERVED_USERNAMES", "")),
+	}
+
+	if err := Validate(c); err != nil {
+		return nil, err
+	}
+	return c, nil
+}
+
+func env(key, def string) string {
+	if v, ok := os.LookupEnv(key); ok && v != "" {
+		return v
+	}
+	return def
+}
+
+func envInt(key string, def int) int {
+	if v, ok := os.LookupEnv(key); ok && v != "" {
+		if n, err := strconv.Atoi(v); err == nil {
+			return n
+		}
+	}
+	return def
+}
+
+func envBool(key string, def bool) bool {
+	if v, ok := os.LookupEnv(key); ok && v != "" {
+		switch strings.ToLower(v) {
+		case "1", "true", "yes", "on":
+			return true
+		case "0", "false", "no", "off":
+			return false
+		}
+	}
+	return def
+}
+
+func csv(v string) []string {
+	if v == "" {
+		return nil
+	}
+	parts := strings.Split(v, ",")
+	out := make([]string, 0, len(parts))
+	for _, p := range parts {
+		p = strings.TrimSpace(p)
+		if p != "" {
+			out = append(out, p)
+		}
+	}
+	return out
+}
+
+func csvInt(v string) []int {
+	parts := csv(v)
+	out := make([]int, 0, len(parts))
+	for _, p := range parts {
+		n, err := strconv.Atoi(p)
+		if err != nil {
+			continue
+		}
+		out = append(out, n)
+	}
+	return out
+}
+
+func (c *Config) Addr() string { return fmt.Sprintf(":%d", c.Port) }