import {beforeAll, describe, expect, it} from "vitest";
import {setupTestApp} from "../../setup-tests";
import {getLearningPathRepository} from "../../../src/data/repositories";
import {LearningPathRepository} from "../../../src/data/content/learning-path-repository";
import example from "../../test-assets/learning-paths/pn-werking-example";
import {LearningPath} from "../../../src/entities/content/learning-path.entity";
import {expectToBeCorrectEntity} from "../../test-utils/expect-to-be-correct-entity";
import {Language} from "../../../src/entities/content/language";

function expectToHaveFoundPrecisely(expected: LearningPath, result: LearningPath[]): void {
    expect(result).toHaveProperty("length");
    expect(result.length).toBe(1);
    expectToBeCorrectEntity({ entity: result[0]! }, { entity: expected });
}

function expectToHaveFoundNothing(result: LearningPath[]): void {
    expect(result).toHaveProperty("length");
    expect(result.length).toBe(0);
}

describe("LearningPathRepository", () => {
    let learningPathRepo: LearningPathRepository;

    beforeAll(async () => {
        await setupTestApp();
        learningPathRepo = getLearningPathRepository();
    });

    let examplePath: LearningPath;

    it("should be able to add a learning path without throwing an error", async () => {
        examplePath = example.createLearningPath();
        await learningPathRepo.insert(examplePath);
    });

    it("should return the added path when it is queried by hruid and language", async () => {
        const result = await learningPathRepo.findByHruidAndLanguage(examplePath.hruid, examplePath.language);
        expect(result).toBeInstanceOf(LearningPath);
        expectToBeCorrectEntity({ entity: result! }, { entity: examplePath });
    });

    it("should return null to a query on a non-existing hruid or language", async () => {
        const result = await learningPathRepo.findByHruidAndLanguage("not_existing_hruid", examplePath.language);
        expect(result).toBe(null);
    });

    it("should return the learning path when we search for a search term occurring in its title", async () => {
        const result = await learningPathRepo.findByQueryStringAndLanguage(
            examplePath.title.slice(4, 9),
            examplePath.language
        );
        expectToHaveFoundPrecisely(examplePath, result);
    });

    it("should return the learning path when we search for a search term occurring in its description", async () => {
        const result = await learningPathRepo.findByQueryStringAndLanguage(
            examplePath.description.slice(8, 15),
            examplePath.language
        );
        expectToHaveFoundPrecisely(examplePath, result);
    });

    it("should return null when we search for something not occurring in its title or description", async () => {
        const result = await learningPathRepo.findByQueryStringAndLanguage(
            "something not occurring in the path",
            examplePath.language
        );
        expectToHaveFoundNothing(result);
    });

    it("should return null when we search for something occurring in its title, but another language", async () => {
        const result = await learningPathRepo.findByQueryStringAndLanguage(
            examplePath.description.slice(1, 3),
            Language.Kalaallisut
        );
        expectToHaveFoundNothing(result);
    });
});