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recipe.resolver.ts
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recipe.resolver.ts
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import { GraphQLNonNegativeInt } from "graphql-scalars";
import {
Arg,
FieldResolver,
Int,
Mutation,
Query,
Resolver,
type ResolverInterface,
Root,
} from "type-graphql";
import { createRecipeSamples } from "./recipe.data";
import { RecipeInput } from "./recipe.input";
import { Recipe } from "./recipe.type";
@Resolver(_of => Recipe)
export class RecipeResolver implements ResolverInterface<Recipe> {
private readonly items: Recipe[] = createRecipeSamples();
@Query(_returns => Recipe, { nullable: true })
async recipe(@Arg("title") title: string): Promise<Recipe | undefined> {
return this.items.find(recipe => recipe.title === title);
}
@Query(_returns => [Recipe], { description: "Get all the recipes from around the world " })
async recipes(): Promise<Recipe[]> {
return this.items;
}
@Mutation(_returns => Recipe)
async addRecipe(@Arg("recipe") recipeInput: RecipeInput): Promise<Recipe> {
const recipe = Object.assign(new Recipe(), {
description: recipeInput.description,
title: recipeInput.title,
ratings: [],
creationDate: new Date(),
});
await this.items.push(recipe);
return recipe;
}
@FieldResolver(_returns => GraphQLNonNegativeInt)
ratingsCount(
@Root() recipe: Recipe,
@Arg("minRate", _type => Int, { defaultValue: 0 }) minRate: number,
): number {
return recipe.ratings.filter(rating => rating >= minRate).length;
}
}