import { describe, expect, it } from 'vitest'
import { EMPTY_SEO } from '@/lib/articleSeo'
import {
	applyTitleTemplate,
	bodyText,
	firstSentence,
	previewTitle,
	siteDisplayName,
	socialTitle,
} from '@/lib/seoPreview'
import type { Site } from '@/composables/useSites'

const site = {
	id: 1,
	name: 'Renew',
	key: 'renew',
	base_url: 'https://renew.example',
	default_social_image_id: null,
	default_robots: 'index',
	locale: null,
	site_name: '',
	title_template: '%title% | %site%',
	is_default: true,
	article_count: 1,
} as Site

describe('applyTitleTemplate', () => {
	it('replaces every occurrence in a single pass', () => {
		expect(applyTitleTemplate('%site%: %title% (%title%)', 'A', 'S')).toBe('S: A (A)')
	})

	it('does not expand replacement patterns or substitute tokens inside the title', () => {
		expect(applyTitleTemplate('%title% | %site%', "Cost $& $' $` %site%", 'Renew')).toBe(
			"Cost $& $' $` %site% | Renew",
		)
	})

	it('falls back to the default template and trims', () => {
		expect(applyTitleTemplate('', 'A', '')).toBe('A |')
	})
})

describe('bodyText', () => {
	it('separates block elements with a space', () => {
		expect(bodyText('<p>One.</p><p>Two</p>')).toBe('One. Two')
		expect(firstSentence('<p>One.</p><p>Two</p>')).toBe('One.')
	})

	it('skips script and style text', () => {
		expect(bodyText('<style>p{}</style><p>Kept</p><script>alert(1)</script>')).toBe('Kept')
	})

	it('does not run markup', () => {
		const img = '<img src=x onerror="document.body.dataset.ran=1">'
		bodyText(img)
		expect(document.body.dataset.ran).toBeUndefined()
	})
})

describe('titles', () => {
	const input = { seo: { ...EMPTY_SEO }, title: 'Article', body: '', site }

	it('uses the site name, then the site key name, for the template', () => {
		expect(siteDisplayName(site)).toBe('Renew')
		expect(previewTitle(input)).toBe('Article | Renew')
	})

	it('falls back to the templated title for the social title', () => {
		expect(socialTitle(input)).toBe('Article | Renew')
		expect(socialTitle({ ...input, seo: { ...EMPTY_SEO, seo_title: 'Meta' } })).toBe(
			'Meta | Renew',
		)
		expect(socialTitle({ ...input, seo: { ...EMPTY_SEO, social_title: 'Own' } })).toBe('Own')
	})
})