factory pattern

Author: codecat15

Patterns/Factory pattern/MyPlayground.playground/Contents.swift

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+import UIKit
+
+/**
+Thank you for taking time and watching the vide, if you have questions then please feel free to ask them via comments or via email.
+
+ If you are new to the channel, I request you to please subscribe to the channel as the more people subscribe the more it motivates me to bring quality content for free.
+
+ Do share the channel with your iOS group and do let me know what I can do better to improve my content or any video requests you can think of
+
+ Thank you once again, have a nice day
+
+ Ravi a.k.a codecat15
+
+ */
+
+
+// Model
+struct Report {
+
+    let id : UUID
+    let year: Int
+    let total: Double
+
+    static func generateDummyReport() -> Array<Report> {
+
+        return [Report(id: UUID(), year: Int.random(in: 2015..<2022), total: Double.random(in: 2000..<5000)),
+                Report(id: UUID(), year: Int.random(in: 2015..<2022), total: Double.random(in: 2000..<5000))]
+    }
+}
+
+protocol ReportProtocol {
+    func getReport() -> Array<Report>
+}
+
+class TaxReport : ReportProtocol {
+
+    func getReport() -> Array<Report> {
+        print("fetching tax report")
+        return Report.generateDummyReport()
+    }
+}
+
+class ProfitReport : ReportProtocol {
+
+    func getReport() -> Array<Report> {
+        
+        // code for calculating profit report
+        print("fetching profit report")
+        return Report.generateDummyReport()
+    }
+}
+
+class FinanceReport : ReportProtocol {
+    func getReport() -> Array<Report> {
+
+        // code for calculating profit report
+        print("fetching finance report")
+        return Report.generateDummyReport()
+    }
+}
+
+enum ReportType {
+    case tax
+    case profit
+    case finance
+}
+
+class ReportFactory {
+    static func create(type: ReportType) -> ReportProtocol {
+
+        switch type {
+        case .tax:
+            return TaxReport()
+        case .profit:
+            return ProfitReport()
+        case .finance:
+            return FinanceReport()
+        }
+    }
+}
+
+class ReportViewModel {
+    private let report : ReportProtocol
+
+    init(_report : ReportProtocol) {
+        report = _report
+    }
+    func getReport() -> Array<Report> {
+        return report.getReport()
+    }
+}
+
+let reportViewModel = ReportViewModel(_report: ReportFactory.create(type: .finance))
+reportViewModel.getReport()

Patterns/Factory pattern/MyPlayground.playground/contents.xcplayground

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