Eggplant Spaghetti

Name: Eggplant Spaghetti
Ingredients: 2 tablespoons olive oil, divided; 3 cups (1-inch) cubed peeled eggplant; 1/2 cup chopped onion; 1/4 teaspoon salt; 1 (8-ounce) package presliced mushrooms; 4 garlic cloves, minced; 2 (14.5-ounce) cans diced tomatoes with garlic and onion, undrained; 1/4 cup chopped fresh parsley, divided; 1/4 cup sliced green olives; 2 tablespoons chopped fresh basil; 1 tablespoon sugar; 2 tablespoons tomato paste; 2 tablespoons balsamic vinegar; 1/4 teaspoon freshly ground black pepper; 4 cups hot cooked pasta