WIP - Complete App refactoring

Nextcloud Cookbook iOS Client/Account/AccountManager.swift

@@ -6,3 +6,40 @@
 //
 
 import Foundation
+
+@Observable
+class AccountManager {
+    var accounts: [any Account] = []
+    var authTokens: [String: String] = [:]
+    
+    /// Save account as JSON.
+    func save(account: any Account, authToken: String?) async throws {
+        account.saveTokenToKeychain(authToken!)
+        let data = try JSONEncoder().encode(account)
+        
+        let accountDir = account.accountType.rawValue + "/" + account.id.uuidString + "/account.json"
+        await DataStore.shared.save(data: data, toPath: accountDir)
+    }
+    
+    /// Load accounts from JSON files.
+    func loadAccounts() async throws {
+        // Read data from file or user defaults
+        for accountType in AccountType.allCases {
+            // List all account UUIDs under the /accountType directory
+            let accountUUIDs = DataStore.shared.listAllFolders(dir: accountType.rawValue + "/")
+            
+            // Decode each account and fetch the authToken
+            for accountUUID in accountUUIDs {
+                do {
+                    guard let account = try await DataStore.shared.loadDynamic(fromPath: accountType.rawValue + "/" + accountUUID + "/account.json", type: accountType.accountType) else {
+                        continue
+                    }
+                    authTokens[accountUUID] = (account as! any Account).getTokenFromKeychain() ?? ""
+                    self.accounts.append(account as! (any Account))
+                } catch {
+                    continue
+                }
+            }
+        }
+    }
+}