edition 2.0

01-designing-the-data-model/final/OnThisDay.playground/Contents.swift

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+//
+// OnThisDay.playground
+// macOS by Tutorials
+// Version 2.0
+//
+// by Sarah Reichelt
+//
+
+import Cocoa
+
+let appState = AppState()
+let monthNum = 2
+let dayNum = 29
+
+func testData() {
+  if let day = appState.getDataFor(
+    month: monthNum, day: dayNum
+  ) {
+    print(day.displayDate)
+    print("\(day.deaths.count) deaths")
+  } else {
+    print("No data available for that month & day.")
+  }
+}
+
+extension String {
+  // String extension to decode HTML entities
+  var decoded: String {
+    let attr = try? NSAttributedString(
+      data: Data(utf8),
+      options: [
+        .documentType: NSAttributedString.DocumentType.html,
+        .characterEncoding: String.Encoding.utf8.rawValue
+      ],
+      documentAttributes: nil)
+
+    return attr?.string ?? self
+  }
+}
+
+enum FetchError: Error {
+  case badURL
+  case badResponse
+  case badJSON
+}
+
+func getDataForDay(month: Int, day: Int) async throws -> Day {
+  let address = "https://today.zenquotes.io/api/\(month)/\(day)"
+  guard let url = URL(string: address) else {
+    throw FetchError.badURL
+  }
+  let request = URLRequest(url: url)
+
+  let (data, response) = try await URLSession.shared.data(for: request)
+  guard
+    let response = response as? HTTPURLResponse,
+    response.statusCode < 400
+  else {
+    throw FetchError.badResponse
+  }
+
+  if let jsonString = String(data: data, encoding: .utf8) {
+    saveSampleData(json: jsonString)
+  }
+
+  do {
+    let day = try JSONDecoder().decode(Day.self, from: data)
+    return day
+  } catch {
+    throw FetchError.badJSON
+  }
+}
+
+//  Task {
+//    do {
+//      try await getDataForDay(month: 2, day: 29)
+//    } catch {
+//      print(error)
+//    }
+//  }
+
+// if let data = readSampleData() {
+//  do {
+//    let day = try JSONDecoder().decode(Day.self, from: data)
+//    // print(day.displayDate)
+//    // print(day.births.count)
+//    // print(day.births[0].links)
+//    // print(day.births[0].text)
+//    // print(day.births[0].year)
+//
+//    appState.days[day.displayDate] = day
+//    testData()
+//  } catch {
+//    print(error)
+//  }
+// }
+
+Task {
+  do {
+    let day = try await getDataForDay(
+      month: monthNum,
+      day: dayNum
+    )
+    appState.days[day.displayDate] = day
+    testData()
+  } catch {
+    print(error)
+  }
+}
+
+struct Day: Decodable {
+  let date: String
+  let data: [String: [Event]]
+
+  var events: [Event] { data[EventType.events.rawValue] ?? [] }
+  var births: [Event] { data[EventType.births.rawValue] ?? [] }
+  var deaths: [Event] { data[EventType.deaths.rawValue] ?? [] }
+
+  var displayDate: String {
+    date.replacingOccurrences(of: "_", with: " ")
+  }
+}
+
+struct Event: Decodable, Identifiable {
+  let id = UUID()
+  let text: String
+  let year: String
+  let links: [EventLink]
+
+  enum CodingKeys: String, CodingKey {
+    case text
+    case links
+  }
+
+  init(from decoder: Decoder) throws {
+    let values = try decoder.container(keyedBy: CodingKeys.self)
+
+    let rawText = try values.decode(String.self, forKey: .text)
+    let textParts = rawText.components(separatedBy: " &#8211; ")
+    if textParts.count == 2 {
+      year = textParts[0]
+      text = textParts[1].decoded
+    } else {
+      year = "?"
+      text = rawText.decoded
+    }
+
+    let allLinks = try values.decode(
+      [String: [String: String]].self,
+      forKey: .links
+    )
+
+    var processedLinks: [EventLink] = []
+    for (_, link) in allLinks {
+      if
+        let title = link["2"],
+        let address = link["1"],
+        let url = URL(string: address) {
+        processedLinks.append(
+          EventLink(id: UUID(), title: title, url: url)
+        )
+      }
+    }
+    links = processedLinks
+  }
+}
+
+struct EventLink: Decodable, Identifiable {
+  let id: UUID
+  let title: String
+  let url: URL
+}
+
+enum EventType: String {
+  case events = "Events"
+  case births = "Births"
+  case deaths = "Deaths"
+}
+
+// 1
+class AppState {
+  // 2
+  var days: [String: Day] = [:]
+  // 3
+  func getDataFor(month: Int, day: Int) -> Day? {
+    let monthName = Calendar.current.monthSymbols[month - 1]
+    let dateString = "\(monthName) \(day)"
+    return days[dateString]
+  }
+}

01-designing-the-data-model/final/OnThisDay.playground/Sources/Files.swift

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+//
+// Files.swift
+// macOS by Tutorials
+// Version 2.0
+//
+// by Sarah Reichelt
+//
+
+import Foundation
+
+public var sampleFileURL: URL {
+  URL.downloadsDirectory.appending(path: "SampleData.json")
+}
+
+public func saveSampleData(json: String) {
+  do {
+    try json.write(to: sampleFileURL, atomically: true, encoding: .utf8)
+    print("Sample JSON data saved to \(sampleFileURL.path)")
+  } catch {
+    print(error)
+  }
+}
+
+public func readSampleData() -> Data? {
+  do {
+    let data = try Data(contentsOf: sampleFileURL)
+    return data
+  } catch {
+    print(error)
+    return nil
+  }
+}

01-designing-the-data-model/final/OnThisDay.playground/contents.xcplayground

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+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='5.0' target-platform='macos' buildActiveScheme='true' importAppTypes='true'>
+    <timeline fileName='timeline.xctimeline'/>
+</playground>

01-designing-the-data-model/starter/OnThisDay.playground/Contents.swift

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+//
+// OnThisDay.playground
+// macOS by Tutorials
+// Version 2.0
+//
+// by Sarah Reichelt
+//
+
+import Cocoa
+
+extension String {
+  // String extension to decode HTML entities
+  var decoded: String {
+    let attr = try? NSAttributedString(
+      data: Data(utf8),
+      options: [
+        .documentType: NSAttributedString.DocumentType.html,
+        .characterEncoding: String.Encoding.utf8.rawValue
+      ],
+      documentAttributes: nil)
+
+    return attr?.string ?? self
+  }
+}
+
+enum FetchError: Error {
+  case badURL
+  case badResponse
+  case badJSON
+}
+
+func getDataForDay(month: Int, day: Int) async throws {
+  let address = "https://today.zenquotes.io/api/\(month)/\(day)"
+  guard let url = URL(string: address) else {
+    throw FetchError.badURL
+  }
+  let request = URLRequest(url: url)
+
+  let (data, response) = try await URLSession.shared.data(for: request)
+  guard
+    let response = response as? HTTPURLResponse,
+    response.statusCode < 400
+  else {
+    throw FetchError.badResponse
+  }
+
+  if let jsonString = String(data: data, encoding: .utf8) {
+    saveSampleData(json: jsonString)
+  }
+}
+
+Task {
+  do {
+    try await getDataForDay(month: 2, day: 29)
+  } catch {
+    print(error)
+  }
+}

01-designing-the-data-model/starter/OnThisDay.playground/Sources/Files.swift

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+//
+// Files.swift
+// macOS by Tutorials
+// Version 2.0
+//
+// by Sarah Reichelt
+//
+
+import Foundation
+
+public var sampleFileURL: URL {
+  URL.downloadsDirectory.appending(path: "SampleData.json")
+}
+
+public func saveSampleData(json: String) {
+  do {
+    try json.write(to: sampleFileURL, atomically: true, encoding: .utf8)
+    print("Sample JSON data saved to \(sampleFileURL.path)")
+  } catch {
+    print(error)
+  }
+}
+
+public func readSampleData() -> Data? {
+  do {
+    let data = try Data(contentsOf: sampleFileURL)
+    return data
+  } catch {
+    print(error)
+    return nil
+  }
+}

01-designing-the-data-model/starter/OnThisDay.playground/contents.xcplayground

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+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<playground version='5.0' target-platform='macos' buildActiveScheme='true' importAppTypes='true'>
+    <timeline fileName='timeline.xctimeline'/>
+</playground>