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

test('original resolution wins whenever it is offered', () => {
    assert.equal(pickDefaultResolution({
        '800x': '37.53MiB',
        '1280x': '66.57MiB',
        '2560x': '84.01MiB',
        'Original': '498.2MiB'
    }), 'Original')
})

test('without an original entry the largest file is chosen', () => {
    // 1920x is bigger than 2560x here, so byte size decides, not the label.
    assert.equal(pickDefaultResolution({
        '800x': '37.53MiB',
        '1920x': '811.1MiB',
        '2560x': '84.01MiB'
    }), '1920x')
})

test('an empty or missing resolution map yields an empty choice', () => {
    assert.equal(pickDefaultResolution({}), '')
    assert.equal(pickDefaultResolution(undefined), '')
})

test('thumbnail urls carry the path and the active auth code', () => {
    const url = new URL(ehThumbnailUrl('https://example.org/t?a=1&b=2', 'code with spaces'))
    assert.equal(url.searchParams.get('path'), 'https://example.org/t?a=1&b=2')
    assert.equal(url.searchParams.get('AuthCode'), 'code with spaces')
    assert.equal(ehThumbnailUrl('', 'x'), '')
})