add mosis-portal Go project with package signing and validation

portal/internal/config/config.go

@@ -0,0 +1,60 @@
+// Package config handles configuration loading for mosis-portal
+package config
+
+import (
+	"os"
+)
+
+// Config holds all configuration for the portal
+type Config struct {
+	// Server settings
+	ListenAddr string
+	BaseURL    string
+
+	// Database
+	DatabasePath string
+
+	// JWT
+	JWTSecret string
+
+	// OAuth2 - GitHub
+	GitHubClientID     string
+	GitHubClientSecret string
+
+	// OAuth2 - Google
+	GoogleClientID     string
+	GoogleClientSecret string
+
+	// Storage
+	PackagesDir string
+	BackupsDir  string
+}
+
+// Load reads configuration from environment variables with defaults
+func Load() (*Config, error) {
+	cfg := &Config{
+		ListenAddr:   getEnv("LISTEN_ADDR", ":8080"),
+		BaseURL:      getEnv("BASE_URL", "http://localhost:8080"),
+		DatabasePath: getEnv("DATABASE_PATH", "./data/portal.db"),
+
+		JWTSecret: getEnv("JWT_SECRET", "change-me-in-production"),
+
+		GitHubClientID:     os.Getenv("GITHUB_CLIENT_ID"),
+		GitHubClientSecret: os.Getenv("GITHUB_CLIENT_SECRET"),
+
+		GoogleClientID:     os.Getenv("GOOGLE_CLIENT_ID"),
+		GoogleClientSecret: os.Getenv("GOOGLE_CLIENT_SECRET"),
+
+		PackagesDir: getEnv("PACKAGES_DIR", "./packages"),
+		BackupsDir:  getEnv("BACKUPS_DIR", "./backups"),
+	}
+
+	return cfg, nil
+}
+
+func getEnv(key, defaultValue string) string {
+	if value := os.Getenv(key); value != "" {
+		return value
+	}
+	return defaultValue
+}