import {INestApplication} from "@nestjs/common";
import {Test, TestingModule} from "@nestjs/testing";
import * as request from "supertest";
import {dataSource, GreenlyDataSource} from "../config/dataSource";
import {AppModule} from "../src/app.module";
import {CarbonEmissionFactor} from "../src/carbonEmissionFactor/carbonEmissionFactor.entity";
import {seedTestCarbonEmissionFactors} from "../src/seed-dev-data";
import {FoodProductService} from "../src/foodProduct/foodProduct.service";
import {FoodProduct} from "../src/foodProduct/foodProduct.entity";
import {FoodProductFootprintService} from "../src/foodProductFootprint/foodProductFootprint.service";

beforeAll(async () => {
  await dataSource.initialize();
	await GreenlyDataSource.cleanDatabase();
});

afterAll(async () => {
  await dataSource.destroy();
});

describe("FoodProductFootprintController", () => {
  let app: INestApplication;
  let defaultProducts: FoodProduct[];

  beforeEach(async () => {
    const moduleFixture: TestingModule = await Test.createTestingModule({
      imports: [AppModule],
    }).compile();

    app = moduleFixture.createNestApplication();
	  await app.init();

	  await seedTestCarbonEmissionFactors();

	  const foodProductService = new FoodProductService(dataSource.getRepository(FoodProduct), dataSource.getRepository(CarbonEmissionFactor));
	  const foodProductFootprintService = new FoodProductFootprintService();
	  await foodProductFootprintService.computeAndSave(await foodProductService.initialize({
		  name: "ketchup",
		  ingredients: [
			  { name: "tomato", quantity: 0.9, unit: "kg" },
			  { name: "vinegar", quantity: 0.1, unit: "kg" },
		  ],
	  }));

    defaultProducts = await dataSource
      .getRepository(FoodProduct)
      .find();
  });

  it("GET /food-product-footprint", async () => {
    return request(app.getHttpServer())
      .get("/food-product-footprint")
      .expect(200)
      .expect(({ body }) => {
        expect(body).toEqual(defaultProducts);
      });
  });

  it("POST /food-product-footprint", async () => {
	  const hamCheesePizza = {
			name: "hamCheesePizza",
		  ingredients: [
			  { name: "ham", quantity: 0.1, unit: "kg" },
			  { name: "cheese", quantity: 0.15, unit: "kg" },
			  { name: "tomato", quantity: 0.4, unit: "kg" },
			  { name: "flour", quantity: 0.7, unit: "kg" },
			  { name: "oliveOil", quantity: 0.3, unit: "kg" },
		  ],
	  };
    return request(app.getHttpServer())
      .post("/food-product-footprint")
      .send(hamCheesePizza)
      .expect(201)
      .expect(({ body }) => {
        expect(body).toMatchObject(hamCheesePizza);
				expect(body.footprint).not.toBeNull();
				expect(body.footprint).toBeCloseTo(0.224, 3);
      });
  });
});