Initial commit

Services/Session/SessionCredentialStore.cs

@@ -0,0 +1,42 @@
+using Microsoft.AspNetCore.Components.Server.ProtectedBrowserStorage;
+using SharepointToolbox.Web.Core.Models;
+
+namespace SharepointToolbox.Web.Services.Session;
+
+public class SessionCredentialStore : ISessionCredentialStore
+{
+    private const string Key = "sp-session-tokens";
+    private readonly ProtectedSessionStorage _storage;
+
+    public SessionCredentialStore(ProtectedSessionStorage storage) { _storage = storage; }
+
+    public async Task<SessionTokens?> GetAsync()
+    {
+        try
+        {
+            var result = await _storage.GetAsync<SessionTokens>(Key);
+            return result.Success ? result.Value : null;
+        }
+        catch { return null; }
+    }
+
+    public async Task SetAsync(SessionTokens tokens) =>
+        await _storage.SetAsync(Key, tokens);
+
+    public async Task UpdateRefreshTokenAsync(string newRefreshToken)
+    {
+        var tokens = await GetAsync();
+        if (tokens is null) return;
+        tokens.RefreshToken = newRefreshToken;
+        await _storage.SetAsync(Key, tokens);
+    }
+
+    public async Task ClearAsync() =>
+        await _storage.DeleteAsync(Key);
+
+    public async Task<bool> HasCredentialsAsync()
+    {
+        var tokens = await GetAsync();
+        return tokens is not null && !string.IsNullOrEmpty(tokens.RefreshToken);
+    }
+}