// @vitest-environment jsdom
import {afterEach, beforeEach, describe, expect, it, vi} from 'vitest';
import {cleanup, fireEvent, render, screen, waitFor} from '@testing-library/react';
import {MemoryRouter} from 'react-router-dom';
import {toast} from 'sonner';
import QuestionsPage from './QuestionsPage.jsx';
import {PreferencesProvider} from '../context/PreferencesContext.jsx';
import {fetchRoutes, json} from '../test/fetchRoutes.js';

vi.mock('react-i18next', () => import('../test/i18n-mock.js'));
vi.mock('sonner', () => ({toast: Object.assign(vi.fn(), {success: vi.fn(), error: vi.fn()})}));

const card = (appid, question, name = `Game ${appid}`) => ({appid, name, imageUrl: null, question, status: 'PLAYING',
    playtimeMinutes: 1500, normallyMinutes: null, lastActivity: null});

const booked = (appid) => ({balance: 30, missing: {}, paid: [{kind: 'FINISHED', appid, points: 30, paidAt: '2026-10-09T10:00:00Z', bookedNow: true}]});
const WALLET = {
    'GET /api/rewards/wallet': json(200, {balance: 30, catalog: [], owned: [], equipped: {}, history: []}),
    'GET /api/rewards/expected': json(200, {}),
    'GET /api/library/removed-games': json(200, {results: []}),
};
const expectedCalls = () => globalThis.fetch.mock.calls.filter(([url]) => url.includes('/api/rewards/expected'));
const pointsCalls = () => globalThis.fetch.mock.calls.filter(([url]) => url.includes('/api/rewards/games/'));

const renderPage = (routes) => {
    const mock = fetchRoutes({...WALLET, ...routes});
    render(<MemoryRouter><PreferencesProvider><QuestionsPage/></PreferencesProvider></MemoryRouter>);
    return mock;
};

const bodyOf = (mock) => JSON.parse(mock.mock.calls.find(([, init]) => init?.method === 'POST')[1].body);

beforeEach(() => {
    localStorage.setItem('tbp_session', '1');
});

afterEach(() => {
    cleanup();
    localStorage.clear();
    vi.clearAllMocks();
});

describe('QuestionsPage', () => {
    it('showsTheRemovedGamesSectionAlsoWithoutQuestions', async () => {
        renderPage({
            'GET /api/library/questions': json(200, {results: []}),
            'GET /api/library/removed-games': json(200, {results: [{appid: -1, name: 'Zelda', imageUrl: null, source: 'MANUAL', platform: 'Switch'}]}),
        });

        expect(await screen.findByText('QUESTIONS.EMPTY')).toBeTruthy();
        expect(await screen.findByText('REMOVED_GAMES.TITLE_COUNT:1')).toBeTruthy();
    });

    it('showsOneCardPerGameWithTheCountInTheTitle', async () => {
        renderPage({'GET /api/library/questions': json(200, {results: [card(1, 'START'), card(2, 'FINISHED')]})});

        expect(await screen.findByText('Game 1')).toBeTruthy();
        expect(screen.getByText('Game 2')).toBeTruthy();
        expect(screen.getByText('QUESTIONS.START.ASK')).toBeTruthy();
        expect(screen.getByText('QUESTIONS.TITLE_COUNT:2')).toBeTruthy();
    });

    it('removesTheCardAfterAYes', async () => {
        const mock = renderPage({
            'GET /api/library/questions': json(200, {results: [card(1, 'START'), card(2, 'START')]}),
            'POST /api/library/questions/1': json(200, {next: null}),
            'GET /api/rewards/games/1': json(200, booked(1)),
        });
        await screen.findByText('Game 1');

        fireEvent.click(screen.getAllByRole('button', {name: 'QUESTIONS.YES'})[0]);

        await waitFor(() => expect(screen.queryByText('Game 1')).toBeNull());
        expect(screen.getByText('Game 2')).toBeTruthy();
        expect(bodyOf(mock)).toEqual({question: 'START', yes: true});
        expect(toast.success).toHaveBeenCalledWith('BACKLOG.SAVED');
    });

    it('removesTheCardAfterANo', async () => {
        const mock = renderPage({
            'GET /api/library/questions': json(200, {results: [card(1, 'DROPPED')]}),
            'POST /api/library/questions/1': json(200, {next: null}),
        });
        await screen.findByText('Game 1');

        fireEvent.click(screen.getByRole('button', {name: 'QUESTIONS.NO'}));

        expect(await screen.findByText('QUESTIONS.EMPTY')).toBeTruthy();
        expect(bodyOf(mock)).toEqual({question: 'DROPPED', yes: false});
    });

    it('replacesTheCardWithTheRateQuestionAfterFinished', async () => {
        renderPage({
            'GET /api/library/questions': json(200, {results: [card(1, 'FINISHED')]}),
            'POST /api/library/questions/1': json(200, {next: card(1, 'RATE')}),
            'GET /api/rewards/games/1': json(200, booked(1)),
        });
        await screen.findByText('QUESTIONS.FINISHED.ASK');

        fireEvent.click(screen.getByRole('button', {name: 'QUESTIONS.YES'}));

        expect(await screen.findByText('QUESTIONS.RATE.ASK')).toBeTruthy();
        expect(screen.queryByText('QUESTIONS.FINISHED.ASK')).toBeNull();
    });

    it('showsThePointsToastAfterAYesToFinished', async () => {
        renderPage({
            'GET /api/library/questions': json(200, {results: [card(1, 'FINISHED')]}),
            'POST /api/library/questions/1': json(200, {next: null}),
            'GET /api/rewards/games/1': json(200, booked(1)),
        });
        await screen.findByText('QUESTIONS.FINISHED.ASK');

        fireEvent.click(screen.getByRole('button', {name: 'QUESTIONS.YES'}));

        await waitFor(() => expect(toast.success).toHaveBeenCalledWith('POINTS.GAME.TOAST_BOOKED:30'));
        expect(pointsCalls()).toHaveLength(1);
    });

    it('asksForNoPointsAfterANoOrTheRatingAnswer', async () => {
        renderPage({
            'GET /api/library/questions': json(200, {results: [card(1, 'FINISHED'), card(2, 'RATE')]}),
            'POST /api/library/questions/1': json(200, {next: null}),
            'POST /api/library/questions/2': json(200, {next: null}),
        });
        await screen.findByText('Game 1');

        fireEvent.click(screen.getAllByRole('button', {name: 'QUESTIONS.NO'})[0]);
        await waitFor(() => expect(screen.queryByText('Game 1')).toBeNull());
        fireEvent.click(screen.getByRole('button', {name: 'BACKLOG.RATING_STARS:5'}));
        await screen.findByText('QUESTIONS.EMPTY');

        expect(pointsCalls()).toHaveLength(0);
    });

    it('sendsTheRatingOfTheStars', async () => {
        const mock = renderPage({
            'GET /api/library/questions': json(200, {results: [card(1, 'RATE')]}),
            'POST /api/library/questions/1': json(200, {next: null}),
        });
        await screen.findByText('QUESTIONS.RATE.ASK');

        fireEvent.click(screen.getByRole('button', {name: 'BACKLOG.RATING_STARS:5'}));

        await screen.findByText('QUESTIONS.EMPTY');
        expect(bodyOf(mock)).toEqual({question: 'RATE', yes: true, rating: 5});
    });

    it('loadsTheListAgainWhenTheQuestionIsGone', async () => {
        let results = [card(1, 'START')];
        renderPage({
            'GET /api/library/questions': () => json(200, {results}),
            'POST /api/library/questions/1': () => {
                results = [];
                return json(409, {code: 'QUESTION_GONE'});
            },
        });
        await screen.findByText('Game 1');

        fireEvent.click(screen.getByRole('button', {name: 'QUESTIONS.YES'}));

        expect(await screen.findByText('QUESTIONS.EMPTY')).toBeTruthy();
        expect(toast).toHaveBeenCalledWith('QUESTIONS.GONE');
    });

    it('keepsTheCardAndSaysSoWhenSavingFails', async () => {
        renderPage({
            'GET /api/library/questions': json(200, {results: [card(1, 'START')]}),
            'POST /api/library/questions/1': json(500, {}),
        });
        await screen.findByText('Game 1');

        fireEvent.click(screen.getByRole('button', {name: 'QUESTIONS.YES'}));

        await waitFor(() => expect(toast.error).toHaveBeenCalledWith('BACKLOG.SAVE_FAILED'));
        expect(screen.getByText('Game 1')).toBeTruthy();
    });

    it('showsTheExpectedPointsOnAFinishedCardOnly', async () => {
        renderPage({
            'GET /api/library/questions': json(200, {results: [card(1, 'FINISHED'), card(2, 'FINISHED'), card(3, 'START')]}),
            'GET /api/rewards/expected': json(200, {1: 50, 2: 0}),
        });

        expect(await screen.findByText('QUESTIONS.FINISHED.POINTS:50')).toBeTruthy();
        expect(screen.getAllByText(/^QUESTIONS.FINISHED.POINTS/)).toHaveLength(1);
        expect(expectedCalls()[0][0]).toContain('appids=1,2');
    });

    it('asksForTheExpectedPointsOfEveryFinishedCardInChunks', async () => {
        const cards = Array.from({length: 201}, (_, i) => card(i + 1, 'FINISHED'));
        renderPage({'GET /api/library/questions': json(200, {results: cards})});

        await waitFor(() => expect(expectedCalls().length).toBeGreaterThan(0));
        const asked = expectedCalls().flatMap(([url]) => new URL(url, 'http://x').searchParams.get('appids').split(','));
        expect(asked).toContain('201');
    });

    it('asksForNoExpectedPointsWithoutAFinishedCard', async () => {
        renderPage({'GET /api/library/questions': json(200, {results: [card(1, 'START')]})});
        await screen.findByText('Game 1');

        expect(expectedCalls()).toHaveLength(0);
    });

    it('showsNoPointsLineAndNoErrorWhenTheExpectedCallFails', async () => {
        renderPage({
            'GET /api/library/questions': json(200, {results: [card(1, 'FINISHED')]}),
            'GET /api/rewards/expected': json(500, {}),
        });

        expect(await screen.findByText('Game 1')).toBeTruthy();
        await waitFor(() => expect(expectedCalls()).toHaveLength(1));
        expect(screen.queryByText(/^QUESTIONS.FINISHED.POINTS/)).toBeNull();
        expect(screen.queryByText('INFO.ERROR.NETWORK_FAILURE')).toBeNull();
    });

    it('showsTheEmptyState', async () => {
        renderPage({'GET /api/library/questions': json(200, {results: []})});

        expect(await screen.findByText('QUESTIONS.EMPTY')).toBeTruthy();
    });
});