import {describe, expect, it} from 'vitest';
import {backlogShare, libraryQuery, NO_PRIORITY, parseSources, parseStatus, toBacklogRequest} from './backlog.js';

describe('toBacklogRequest', () => {
    it('sends every field', () => {
        expect(toBacklogRequest({status: 'FINISHED', rating: 4, notes: 'Great', priority: 'HIGH'}))
            .toEqual({status: 'FINISHED', rating: 4, notes: 'Great', priority: 'HIGH'});
    });

    it('sends null for cleared fields', () => {
        expect(toBacklogRequest({status: 'BACKLOG', rating: 0, notes: '   ', priority: NO_PRIORITY}))
            .toEqual({status: 'BACKLOG', rating: null, notes: null, priority: null});
    });
});

describe('parseStatus', () => {
    it('accepts a known status only', () => {
        expect(parseStatus('PLAYING')).toBe('PLAYING');
        expect(parseStatus('playing')).toBeNull();
        expect(parseStatus(null)).toBeNull();
    });
});

describe('libraryQuery', () => {
    it('leaves out empty filters', () => {
        expect(libraryQuery({page: 0, size: 20, sort: 'playtimeMinutes,desc', status: null, q: '  '}))
            .toBe('page=0&size=20&sort=playtimeMinutes%2Cdesc');
    });

    it('adds the time-to-beat limit', () => {
        expect(libraryQuery({page: 0, size: 20, sort: 'appid,asc', status: null, q: '', maxMinutes: 600}))
            .toBe('page=0&size=20&sort=appid%2Casc&maxMinutes=600');
    });

    it('adds status and the trimmed, encoded search', () => {
        expect(libraryQuery({page: 1, size: 40, sort: 'appid,asc', status: 'DROPPED', q: ' 100% & more '}))
            .toBe('page=1&size=40&sort=appid%2Casc&status=DROPPED&q=100%25+%26+more');
    });
});

describe('backlogShare', () => {
    it('is the rounded backlog percent of the library', () => {
        expect(backlogShare({total: 3, byStatus: {BACKLOG: 2}})).toBe(67);
    });

    it('uses the pile without coming games when Core sends it', () => {
        expect(backlogShare({total: 4, byStatus: {BACKLOG: 3}, pileGames: 1})).toBe(25);
    });

    it('is 0 for an empty library', () => {
        expect(backlogShare({total: 0, byStatus: {BACKLOG: 0}})).toBe(0);
        expect(backlogShare(null)).toBe(0);
    });
});

describe('sources', () => {
    it('parseSources_KeepsKnownValuesInOrder', () => {
        expect(parseSources('PSN,FOO,STEAM,PSN')).toEqual(['STEAM', 'PSN']);
        expect(parseSources(null)).toEqual([]);
        expect(parseSources('')).toEqual([]);
    });

    it('libraryQuery_SetsSourceOnlyWhenSelected', () => {
        const base = {page: 0, size: 20, sort: 'appid,asc', status: null, q: ''};
        expect(libraryQuery({...base, source: 'STEAM,PSN'})).toBe('page=0&size=20&sort=appid%2Casc&source=STEAM%2CPSN');
        expect(libraryQuery({...base, source: ''})).not.toContain('source');
        expect(libraryQuery(base)).not.toContain('source');
    });
});