import {describe, expect, it} from 'vitest';
import {bannerOf, groupByKind} from './syncChanges.js';

const result = (extra = {}) => ({syncedAt: '2026-10-04T10:00:00Z', startedBy: 'AUTO', seen: false, importedGames: 0, changes: [], ...extra});

describe('bannerOf', () => {
    it('showsNothingWithoutAResult', () => {
        expect(bannerOf(null)).toBeNull();
    });

    it('showsNothingForASeenResult', () => {
        expect(bannerOf(result({seen: true, changes: [{kind: 'ADDED', appid: 1}]}))).toBeNull();
    });

    it('showsNothingForAnEmptyAutomaticSync', () => {
        expect(bannerOf(result())).toBeNull();
    });

    it('showsNothingForAnEmptyLoginSync', () => {
        expect(bannerOf(result({startedBy: 'LOGIN'}))).toBeNull();
    });

    it('saysNothingChangedForAnEmptyManualSync', () => {
        expect(bannerOf(result({startedBy: 'MANUAL'}))).toEqual({mode: 'nothing'});
    });

    it('countsTheGamesOfAnImport', () => {
        expect(bannerOf(result({importedGames: 12}))).toMatchObject({mode: 'changes', imported: 12, added: 0});
    });

    it('sumsMinutesAndUnlocksAndCountsTheRest', () => {
        const changes = [
            {kind: 'ADDED', appid: 1}, {kind: 'ADDED', appid: 2}, {kind: 'REMOVED', appid: 3},
            {kind: 'PLAYTIME', appid: 4, amount: 30}, {kind: 'PLAYTIME', appid: 5, amount: 45},
            {kind: 'ACHIEVEMENTS', appid: 4, amount: 2}, {kind: 'ACHIEVEMENTS', appid: 5, amount: 3},
            {kind: 'STATUS', appid: 5, fromStatus: 'BACKLOG', toStatus: 'PLAYING'},
        ];

        expect(bannerOf(result({changes}))).toEqual(
            {mode: 'changes', imported: 0, added: 2, removed: 1, minutes: 75, achievements: 5, moves: 1});
    });
});

describe('groupByKind', () => {
    it('putsTheGroupsInTheFixedOrderAndLeavesOutEmptyOnes', () => {
        const changes = [{kind: 'STATUS', appid: 1}, {kind: 'ADDED', appid: 2}, {kind: 'PLAYTIME', appid: 3}, {kind: 'ADDED', appid: 4}];

        const groups = groupByKind(changes);

        expect(groups.map((group) => group.kind)).toEqual(['ADDED', 'PLAYTIME', 'STATUS']);
        expect(groups[0].changes.map((change) => change.appid)).toEqual([2, 4]);
    });
});