95 lines
3.4 KiB
Swift
95 lines
3.4 KiB
Swift
import Foundation
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final class FeedPageGenerator {
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let results: PageGenerationResults
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let content: Content
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init(content: Content, results: PageGenerationResults) {
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self.content = content
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self.results = results
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}
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private func makeHeaders(requiredItems: Set<KnownHeaderElement>, results: PageGenerationResults) -> Set<HeaderElement> {
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var result = content.postPageHeaders
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for item in requiredItems {
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guard let header = item.header(content: content) else {
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results.warning("Header \(item) not configured in settings")
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continue
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}
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result.insert(header)
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}
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return result
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}
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func generatePage(language: ContentLanguage,
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posts: [FeedEntryData],
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title: String?,
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description: String?,
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image: FileResource?,
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pageUrl: String,
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pageTitle: String?,
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pageNumber: Int,
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totalPages: Int,
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languageButtonUrl: String,
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linkPrefix: String) -> String {
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var footer = ""
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var requiredHeaders = Set<KnownHeaderElement>()
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if posts.contains(where: { $0.requiresSwiper }) {
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// Sort swiper style sheet before default style sheet
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requiredHeaders.formUnion([.swiperJs, .swiperCss])
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footer = swiperInitScript(posts: posts)
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}
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let headers = makeHeaders(requiredItems: requiredHeaders, results: results)
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results.require(files: headers.compactMap { $0.requiredFile })
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results.require(headers: requiredHeaders)
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let iconUrl = content.settings.navigation.localized(in: language).rootUrl
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let languageButton = NavigationBar.Link(
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text: language.next.rawValue,
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url: languageButtonUrl)
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let imageUrl = image?.linkPreviewImage(results: results)
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let requiredIcons: Set<PageIcon> = posts.reduce(into: []) { icons, post in
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icons.formUnion(post.labels.map { $0.icon })
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}
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let pageHeader = PageHeader(
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language: language,
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title: title ?? pageTitle,
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description: description,
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image: imageUrl,
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pageUrl: pageUrl,
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iconUrl: iconUrl,
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languageButton: languageButton,
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links: content.navigationBar(in: language),
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headers: headers,
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icons: requiredIcons)
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let page = GenericPage(
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header: pageHeader,
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additionalFooter: footer) { content in
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if let pageTitle {
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content += "<h1 class='separated-headline'>\(pageTitle)</h1>\n"
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}
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for post in posts {
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content += FeedEntry(data: post).content
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}
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if totalPages > 1 {
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content += PostFeedPageNavigation(
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linkPrefix: linkPrefix,
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currentPage: pageNumber,
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numberOfPages: totalPages).content
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}
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}
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return page.content
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}
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func swiperInitScript(posts: [FeedEntryData]) -> String {
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let ids = posts.filter { $0.requiresSwiper }.map { $0.entryId }
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return ImageGallery.combinedFootor(ids: ids)
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}
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}
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