initial commit

Nextcloud Cookbook iOS Client/Data/DataStore.swift

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+//
+//  DataController.swift
+//  Nextcloud Cookbook iOS Client
+//
+//  Created by Vincent Meilinger on 15.09.23.
+//
+
+import Foundation
+import SwiftUI
+
+class DataStore {
+    private static func fileURL(appending: String) throws -> URL {
+        try FileManager.default.url(
+            for: .documentDirectory,
+            in: .userDomainMask,
+            appropriateFor: nil,
+            create: false
+        )
+
+        .appendingPathComponent(appending)
+    }
+    
+    func load<D: Decodable>(fromPath path: String) async throws -> D? {
+        let task = Task<D?, Error> {
+            let fileURL = try Self.fileURL(appending: path)
+            guard let data = try? Data(contentsOf: fileURL) else {
+                return nil
+            }
+            let storedRecipes = try JSONDecoder().decode(D.self, from: data)
+            return storedRecipes
+        }
+        return try await task.value
+    }
+    
+    func save<D: Encodable>(data: D, toPath path: String) async throws {
+        let task = Task {
+            let data = try JSONEncoder().encode(data)
+            let outfile = try Self.fileURL(appending: path)
+            try data.write(to: outfile)
+        }
+        _ = try await task.value
+    }
+    
+    func clearAll() {
+        do {
+            try FileManager.default.removeItem(at: Self.fileURL(appending: ""))
+        } catch {
+            print("Could not delete file, probably read-only filesystem")
+        }
+    }
+    
+}
+
+