86 lines
2.4 KiB
Swift
86 lines
2.4 KiB
Swift
import Foundation
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protocol DateItem {
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var startDate: Date { get }
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var hasEndDate: Bool { get }
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var endDate: Date { get }
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}
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extension DateItem {
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private func datePrefixString(in language: ContentLanguage) -> String {
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guard Calendar.current.isDate(startDate, equalTo: endDate, toGranularity: .year) else {
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// Different year, return full string
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return startDate.formatted(date: .long, time: .omitted)
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}
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guard Calendar.current.isDate(startDate, equalTo: endDate, toGranularity: .month) else {
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// Different month
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return DateItemStorage.dayAndMonth(of: startDate, in: language)
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}
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return DateItemStorage.day.string(from: startDate)
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}
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func dateText(in language: ContentLanguage) -> String {
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guard hasEndDate else {
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return DateItemStorage.dateString(for: startDate, in: language)
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}
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let endText = DateItemStorage.dateString(for: endDate, in: language)
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return "\(datePrefixString(in: language)) - \(endText)"
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}
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}
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private enum DateItemStorage {
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static let englishDate: DateFormatter = {
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let df = DateFormatter()
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df.locale = .init(identifier: "en")
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df.dateFormat = "d. MMMM yyyy"
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return df
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}()
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static let germanDate: DateFormatter = {
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let df = DateFormatter()
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df.locale = .init(identifier: "de")
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df.dateFormat = "d. MMMM yyyy"
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return df
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}()
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static let englishDayAndMonth: DateFormatter = {
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let df = DateFormatter()
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df.locale = .init(identifier: "en")
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df.dateFormat = "d. MMMM"
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return df
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}()
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static let germanDayAndMonth: DateFormatter = {
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let df = DateFormatter()
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df.locale = .init(identifier: "de")
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df.dateFormat = "d. MMMM"
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return df
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}()
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static let day: DateFormatter = {
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let df = DateFormatter()
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df.dateFormat = "d."
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return df
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}()
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static func dayAndMonth(of date: Date, in language: ContentLanguage) -> String {
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switch language {
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case .english: return englishDayAndMonth.string(from: date)
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case .german: return germanDayAndMonth.string(from: date)
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}
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}
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static func dateString(for date: Date, in language: ContentLanguage) -> String {
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switch language {
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case .english: return englishDate.string(from: date)
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case .german: return germanDate.string(from: date)
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}
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}
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}
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