230 lines
8.5 KiB
Swift
230 lines
8.5 KiB
Swift
import Foundation
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extension Element {
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/**
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Metadata localized for a specific language.
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*/
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struct LocalizedMetadata {
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static let moreLinkDefaultText = "DefaultMoreText"
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/**
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The language for which the content is specified.
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- Note: This field is mandatory
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*/
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let language: String
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/**
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- Note: This field is mandatory
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The title used in the page header.
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*/
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let title: String
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/**
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The subtitle used in the page header.
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*/
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let subtitle: String?
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/**
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The description text used in the page header.
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*/
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let description: String?
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/**
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The title to use for the link preview.
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If `nil` is specified, then the localized element `title` is used.
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*/
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let linkPreviewTitle: String
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/**
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The file name of the link preview image.
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- Note: The image must be located in the element folder.
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- Note: If `nil` is specified, then the (localized) thumbnail is used, if available.
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*/
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let linkPreviewImage: String?
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/**
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The description text for the link preview.
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- Note: If `nil` is specified, then first the (localized) element `subtitle` is used.
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If this is `nil` too, then the localized `description` of the element is used.
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*/
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let linkPreviewDescription: String
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/**
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The text on the link to show the section page when previewing multiple sections on an overview page.
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- Note: If this value is inherited from the parent, if it is not defined. There must be at least one
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element in the path that defines this property.
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*/
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let moreLinkText: String
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/**
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The text on the back navigation link of **contained** elements.
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This text does not appear on the section page, but on the pages contained within the section.
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*/
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let backLinkText: String
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/**
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The text on the back navigation link of the **parent** element.
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This text appears on the section page, but not on the pages contained within the section.
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*/
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let parentBackLinkText: String
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/**
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The text to show as a title for placeholder boxes
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Placeholders are included in missing pages.
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- Note: If no value is specified, then this property is inherited from the parent. The root element must specify this property.
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*/
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let placeholderTitle: String
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/**
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The text to show as a description for placeholder boxes
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Placeholders are included in missing pages.
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- Note: If no value is specified, then this property is inherited from the parent. The root element must specify this property.
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*/
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let placeholderText: String
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/**
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An optional suffix to add to the title on a page.
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This can be useful to express a different author, project grouping, etc.
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*/
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let titleSuffix: String?
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/**
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An optional suffix to add to the thumbnail title of a page.
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This can be useful to express a different author, project grouping, etc.
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*/
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let thumbnailSuffix: String?
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/**
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A text to place in the top right corner of a large thumbnail.
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The text should be a very short string to fit into the corner, like `soon`, or `draft`
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- Note: This property is ignored if `thumbnailStyle` is not `large`.
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*/
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let cornerText: String?
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/**
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The external url to use instead of automatically generating the page.
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This property can be used for links to other parts of the site, like additional services.
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It can also be set to manually write a page.
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*/
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let externalUrl: String?
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}
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}
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extension Element.LocalizedMetadata {
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init?(atRoot folder: URL, data: GenericMetadata.LocalizedMetadata) {
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// Go through all elements and check them for completeness
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// In the end, check that all required elements are present
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var isComplete = true
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func markAsIncomplete() {
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isComplete = false
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}
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let source = "root"
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self.language = log
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.required(data.language, name: "language", source: source)
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.ifNil(markAsIncomplete) ?? ""
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self.title = log
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.required(data.title, name: "title", source: source)
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.ifNil(markAsIncomplete) ?? ""
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self.subtitle = data.subtitle
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self.description = data.description
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self.linkPreviewTitle = data.linkPreviewTitle ?? data.title ?? ""
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self.linkPreviewImage = log
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.linkPreviewThumbnail(customFile: data.linkPreviewImage, for: language, in: folder, source: source)
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let linkPreviewDescription = data.linkPreviewDescription ?? data.description ?? data.subtitle
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self.linkPreviewDescription = log
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.required(linkPreviewDescription, name: "linkPreviewDescription", source: source)
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.ifNil(markAsIncomplete) ?? ""
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self.moreLinkText = data.moreLinkText ?? Element.LocalizedMetadata.moreLinkDefaultText
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self.backLinkText = log
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.required(data.backLinkText, name: "backLinkText", source: source)
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.ifNil(markAsIncomplete) ?? ""
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self.parentBackLinkText = "" // Root has no parent
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self.placeholderTitle = log
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.required(data.placeholderTitle, name: "placeholderTitle", source: source)
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.ifNil(markAsIncomplete) ?? ""
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self.placeholderText = log
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.required(data.placeholderText, name: "placeholderText", source: source)
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.ifNil(markAsIncomplete) ?? ""
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self.titleSuffix = data.titleSuffix
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self.thumbnailSuffix = log.unused(data.thumbnailSuffix, "thumbnailSuffix", source: source)
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self.cornerText = log.unused(data.cornerText, "cornerText", source: source)
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self.externalUrl = log.unexpected(data.externalUrl, name: "externalUrl", source: source)
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guard isComplete else {
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return nil
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}
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}
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init?(folder: URL, data: GenericMetadata.LocalizedMetadata, source: String, parent: Element.LocalizedMetadata) {
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// Go through all elements and check them for completeness
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// In the end, check that all required elements are present
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var isComplete = true
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func markAsIncomplete() {
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isComplete = false
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}
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self.language = parent.language
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self.title = log
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.required(data.title, name: "title", source: source)
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.ifNil(markAsIncomplete) ?? ""
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self.subtitle = data.subtitle
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self.description = data.description
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self.linkPreviewTitle = data.linkPreviewTitle ?? data.title ?? ""
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self.linkPreviewImage = log
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.linkPreviewThumbnail(customFile: data.linkPreviewImage, for: language, in: folder, source: source)
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let linkPreviewDescription = data.linkPreviewDescription ?? data.description ?? data.subtitle
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self.linkPreviewDescription = log
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.required(linkPreviewDescription, name: "linkPreviewDescription", source: source)
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.ifNil(markAsIncomplete) ?? ""
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self.moreLinkText = log.moreLinkText(data.moreLinkText, parent: parent.moreLinkText, source: source)
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self.backLinkText = data.backLinkText ?? data.title ?? ""
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self.parentBackLinkText = parent.backLinkText
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self.placeholderTitle = data.placeholderTitle ?? parent.placeholderTitle
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self.placeholderText = data.placeholderText ?? parent.placeholderText
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self.titleSuffix = data.titleSuffix
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self.thumbnailSuffix = data.thumbnailSuffix
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self.cornerText = data.cornerText
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self.externalUrl = data.externalUrl
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guard isComplete else {
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return nil
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}
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}
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}
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// MARK: Thumbnails
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extension Element {
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static let defaultThumbnailName = "thumbnail.jpg"
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static func localizedThumbnailName(for language: String) -> String {
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"thumbnail-\(language).jpg"
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}
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static func findThumbnail(for language: String, in folder: URL) -> String? {
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let localizedThumbnail = localizedThumbnailName(for: language)
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let localizedThumbnailUrl = folder.appendingPathComponent(localizedThumbnail)
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if localizedThumbnailUrl.exists {
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return localizedThumbnail
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}
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let defaultThumbnailUrl = folder.appendingPathComponent(defaultThumbnailName)
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if defaultThumbnailUrl.exists {
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return defaultThumbnailName
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}
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return nil
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}
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}
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