Added documentation to functions and basic JWT generation

server/config.go

@@ -0,0 +1,63 @@
+package server
+
+import (
+	"errors"
+	"fmt"
+	"os"
+
+	"github.com/joho/godotenv"
+)
+
+type Config struct {
+	Host               string // Host to listen on
+	Port               string // Port to listen on
+	TrustedHost        string // Domain/Hostname to accept as trusted
+	TursoDBName        string // DB Name for Turso DB/Branch
+	TursoToken         string // Bearer token for Turso DB/Branch
+	SecretKey          string // Secret key for signing tokens
+	AccessTokenExpiry  int64  // Access token expiry in minutes
+	RefreshTokenExpiry int64  // Refresh token expiry in minutes
+	TokenFreshTime     int64  // Time for tokens to stay fresh in minutes
+}
+
+// Load the application configuration and get a pointer to the Config object
+func GetConfig(args []string) (*Config, error) {
+	err := godotenv.Load(".env")
+	if err != nil {
+		fmt.Println(".env file not found.")
+	}
+	var port string
+
+	if args[0] != "" {
+		port = args[0]
+	} else {
+		port = GetEnvDefault("PORT", "3333")
+	}
+
+	config := &Config{
+		Host:               GetEnvDefault("HOST", "127.0.0.1"),
+		Port:               port,
+		TrustedHost:        os.Getenv("TRUSTED_HOST"),
+		TursoDBName:        os.Getenv("TURSO_DB_NAME"),
+		TursoToken:         os.Getenv("TURSO_AUTH_TOKEN"),
+		SecretKey:          os.Getenv("SECRET_KEY"),
+		AccessTokenExpiry:  GetEnvInt64("ACCESS_TOKEN_EXPIRY", 5),
+		RefreshTokenExpiry: GetEnvInt64("REFRESH_TOKEN_EXPIRY", 1440), // defaults to 1 day
+		TokenFreshTime:     GetEnvInt64("TOKEN_FRESH_TIME", 5),
+	}
+
+	if config.TrustedHost == "" {
+		return nil, errors.New("Envar not set: TRUSTED_HOST")
+	}
+	if config.TursoDBName == "" {
+		return nil, errors.New("Envar not set: TURSO_DB_NAME")
+	}
+	if config.TursoToken == "" {
+		return nil, errors.New("Envar not set: TURSO_AUTH_TOKEN")
+	}
+	if config.SecretKey == "" {
+		return nil, errors.New("Envar not set: SECRET_KEY")
+	}
+
+	return config, nil
+}