import test from 'node:test'
import assert from 'node:assert/strict'
import {ehThumbnailUrl, pickDefaultResolution} from '../src/utils/thumbnail.js'

test('remote thumbnail paths are wrapped with the auth code', () => {
    const url = ehThumbnailUrl('samples/thumb.png', 'abc123')
    assert.match(url, /^https:\/\/downloader\.lionwebsite\.xyz\/GalleryManage\/ehThumbnail\?/)
    assert.match(url, /path=samples%2Fthumb\.png/)
    assert.match(url, /AuthCode=abc123/)
})

test('a missing thumbnail path produces no url', () => {
    assert.equal(ehThumbnailUrl('', 'abc123'), '')
    assert.equal(ehThumbnailUrl(undefined, 'abc123'), '')
})

test('the original resolution is preselected when offered', () => {
    const chosen = pickDefaultResolution({
        '800x': '37.53MiB',
        '1280x': '66.57MiB',
        '2560x': '84.01MiB',
        'Original': '498.2MiB',
    })
    assert.equal(chosen, 'Original')
})

test('the original label is matched case-insensitively', () => {
    assert.equal(pickDefaultResolution({'800x': '1MiB', 'original': '2MiB'}), 'original')
})

test('without an original the largest entry wins across units', () => {
    const chosen = pickDefaultResolution({
        '800x': '37.53MiB',
        '2560x': '84.01MiB',
        '2160x': '1.2GiB',
    })
    assert.equal(chosen, '2160x')
})

test('an empty or absent resolution map selects nothing', () => {
    assert.equal(pickDefaultResolution({}), '')
    assert.equal(pickDefaultResolution(undefined), '')
})

test('unparseable sizes fall back to the first entry instead of throwing', () => {
    assert.equal(pickDefaultResolution({'800x': 'unknown', '1280x': 'unknown'}), '800x')
})