Rip options out into separate file

options.go

@@ -0,0 +1,66 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	logger "git.site.quack-lab.dev/dave/cylogger"
+	"github.com/joho/godotenv"
+)
+
+var options Options
+
+func init() {
+	var err error
+	options, err = LoadOptions()
+	if err != nil {
+		logger.Error("Failed to load options %v", err)
+		return
+	}
+}
+
+type Options struct {
+	ClientID    string
+	RedirectURI string
+	Scopes      []string
+	DBPath      string
+	Port        string
+}
+
+func LoadOptions() (Options, error) {
+	// Load environment variables strictly from .env file (fail if there's an error loading)
+	if err := godotenv.Load(); err != nil {
+		return Options{}, fmt.Errorf("error loading .env file: %w", err)
+	}
+
+	clientID := os.Getenv("ESI_CLIENT_ID")
+	if clientID == "" {
+		return Options{}, fmt.Errorf("ESI_CLIENT_ID is required in .env file")
+	}
+	redirectURI := os.Getenv("ESI_REDIRECT_URI")
+	if redirectURI == "" {
+		return Options{}, fmt.Errorf("ESI_REDIRECT_URI is required in .env file")
+	}
+	rawScopes := os.Getenv("ESI_SCOPES")
+	if rawScopes == "" {
+		return Options{}, fmt.Errorf("ESI_SCOPES is required in .env file")
+	}
+	scopes := strings.Fields(rawScopes)
+	dbPath := os.Getenv("DB_PATH")
+	if dbPath == "" {
+		return Options{}, fmt.Errorf("DB_PATH is required in .env file")
+	}
+	port := os.Getenv("HTTP_SERVER_PORT")
+	if port == "" {
+		return Options{}, fmt.Errorf("HTTP_SERVER_PORT is required in .env file")
+	}
+
+	return Options{
+		ClientID:    clientID,
+		RedirectURI: redirectURI,
+		Scopes:      scopes,
+		DBPath:      dbPath,
+		Port:        port,
+	}, nil
+}