feat: add frontend + backend + database to retrieve and compute news from Yahoo

backend/internal/config/config.go

@@ -0,0 +1,53 @@
+package config
+
+import (
+	"encoding/hex"
+	"fmt"
+	"os"
+)
+
+type Config struct {
+	DatabaseURL     string
+	JWTSecret       string
+	EncryptionKey   []byte
+	Port            string
+	ChromePath      string
+	AdminEmail      string
+	AdminPassword   string
+}
+
+func Load() (*Config, error) {
+	dbURL := os.Getenv("DATABASE_URL")
+	if dbURL == "" {
+		return nil, fmt.Errorf("DATABASE_URL is required")
+	}
+
+	jwtSecret := os.Getenv("JWT_SECRET")
+	if jwtSecret == "" {
+		return nil, fmt.Errorf("JWT_SECRET is required")
+	}
+
+	encHex := os.Getenv("ENCRYPTION_KEY")
+	if encHex == "" {
+		return nil, fmt.Errorf("ENCRYPTION_KEY is required")
+	}
+	encKey, err := hex.DecodeString(encHex)
+	if err != nil || len(encKey) != 32 {
+		return nil, fmt.Errorf("ENCRYPTION_KEY must be a valid 32-byte hex string")
+	}
+
+	port := os.Getenv("PORT")
+	if port == "" {
+		port = "8080"
+	}
+
+	return &Config{
+		DatabaseURL:   dbURL,
+		JWTSecret:     jwtSecret,
+		EncryptionKey: encKey,
+		Port:          port,
+		ChromePath:    os.Getenv("CHROME_PATH"),
+		AdminEmail:    os.Getenv("ADMIN_EMAIL"),
+		AdminPassword: os.Getenv("ADMIN_PASSWORD"),
+	}, nil
+}