Move monitoring PF infrastructure to Go

internal/pf/config.go

@@ -0,0 +1,58 @@
+package pf
+
+import (
+	"os"
+	"strconv"
+	"strings"
+	"time"
+)
+
+type Config struct {
+	WebHost             string
+	WebPort             int
+	PublicBasePath      string
+	DatabaseURL         string
+	ScrapeIntervalHours int
+	TGBotToken          string
+	TGBotUsername       string
+	WorkerPython        string
+	WorkerModule        string
+}
+
+func LoadConfig() Config {
+	return Config{
+		WebHost:             env("WEB_HOST", "127.0.0.1"),
+		WebPort:             envInt("WEB_PORT", 8000),
+		PublicBasePath:      strings.TrimRight(env("PUBLIC_BASE_PATH", ""), "/"),
+		DatabaseURL:         env("DATABASE_URL", "sqlite:///data/monitor.db"),
+		ScrapeIntervalHours: max(1, envInt("SCRAPE_INTERVAL_HOURS", 4)),
+		TGBotToken:          env("TG_BOT_TOKEN", ""),
+		TGBotUsername:       strings.TrimPrefix(env("TG_BOT_USERNAME", ""), "@"),
+		WorkerPython:        env("WORKER_PYTHON", "python"),
+		WorkerModule:        env("WORKER_MODULE", "app.worker"),
+	}
+}
+
+func (c Config) SchedulerInterval() time.Duration {
+	return time.Duration(c.ScrapeIntervalHours) * time.Hour
+}
+
+func env(key, fallback string) string {
+	value := strings.TrimSpace(os.Getenv(key))
+	if value == "" {
+		return fallback
+	}
+	return value
+}
+
+func envInt(key string, fallback int) int {
+	raw := strings.TrimSpace(os.Getenv(key))
+	if raw == "" {
+		return fallback
+	}
+	value, err := strconv.Atoi(raw)
+	if err != nil {
+		return fallback
+	}
+	return value
+}