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<?php declare(strict_types = 1);
/*
 * Copyright (c) 2020, Josef Kufner  <josef@kufner.cz>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
namespace Smalldb\CodeCooker;
use Smalldb\CodeCooker\Recipe\ClassRecipe;
class Cookbook
{
    /** @var ClassRecipe[] */
    private array $recipes;
    private array $knownClasses = [];
    public function __construct(array $recipes = [])
    {
        $this->recipes = $recipes;
    }
    public function addRecipes(iterable $recipes): void
    {
        foreach ($recipes as $recipe) {
            $this->addRecipe($recipe);
        }
    }
    public function addRecipe(ClassRecipe $recipe): void
    {
        $this->recipes[] = $recipe;
        foreach ($recipe->getTargetClassNames() as $targetClassName) {
            if (isset($this->knownClasses[$targetClassName])) {
                throw new DuplicateRecipeException("Recipe for class $targetClassName is already defined.");
            }
            $this->knownClasses[$targetClassName] = $recipe;
        }
    }
    public function getRecipes(): array
    {
        return $this->recipes;
    }
    public function findRecipe(string $targetClassName): ?ClassRecipe
    {
        return $this->knownClasses[$targetClassName] ?? null;
    }
    public function getAllTargetClassNames(): \Generator
    {
        foreach ($this->getRecipes() as $recipe) {
            foreach ($recipe->getTargetClassNames() as $targetClassName) {
                yield $targetClassName;
            }
        }
    }
}