Refactor and rename project to yawaflua.Discord.Net; add core entities and interfaces for Discord OAuth2 integration

Entities/DiscordSession.cs

@@ -0,0 +1,103 @@
+using System.Collections.Specialized;
+using System.Net.Http.Headers;
+using System.Text.Json;
+using yawaflua.Discord.Net.Interfaces.Models;
+
+namespace yawaflua.Discord.Net.Entities;
+
+internal class DiscordSession (IToken token, HttpClient httpClient, ScopesBuilder scopes, ulong clientId, string clientSecret, string redirectUri, bool prompt) : ISession
+{
+    private async Task<T?> _req<T>(string endpoint, HttpMethod? method = null) where T : class
+    {
+        using var request = new HttpRequestMessage(method ?? HttpMethod.Get, $"https://discord.com/api/{endpoint}");
+        request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);
+        var response = await httpClient.SendAsync(request);
+        if (!response.IsSuccessStatusCode)
+        {
+            return null;
+        }
+
+        var responseString = await response.Content.ReadAsStringAsync();
+        return JsonSerializer.Deserialize<T?>(responseString) ?? null;
+    }
+    
+    public async Task<IList<IGuild>?> GetGuildsAsync(CancellationToken cancellationToken = default)
+    {
+        if (token.AccessToken is null)
+        {
+            throw new ArgumentNullException(nameof(token), "Token cannot be null.");
+        }
+
+        return await _req<DiscordGuild[]>("users/@me/guilds");
+    }
+
+    public async Task<IGuildMember?> GetGuildMemberAsync(ulong guildId, CancellationToken cancellationToken = default)
+    {
+        if (token.AccessToken is null)
+        {
+            throw new ArgumentNullException(nameof(token), "Token cannot be null.");
+        }
+
+        return await _req<DiscordGuildMember>($"users/@me/guilds/{guildId}/member");
+    }
+
+    public async Task<IGuildMember?> AddMemberToGuildAsync(ulong guildId, ulong userId, CancellationToken cancellationToken = default)
+    {
+        if (token.AccessToken is null)
+        {
+            throw new ArgumentNullException(nameof(token), "Token cannot be null.");
+        }
+
+        return await _req<DiscordGuildMember>($"guilds/{guildId}/members/{userId}", HttpMethod.Put);
+    }
+
+    public async Task<IUser?> GetCurrentUserAsync(CancellationToken cancellationToken = default)
+    {
+        if (token.AccessToken is null)
+        {
+            throw new ArgumentNullException(nameof(token), "Token cannot be null.");
+        }
+
+        return await _req<DiscordUser>("users/@me");
+    }
+
+    public async Task<IConnection?> GetConnectionAsync(CancellationToken cancellationToken = default)
+    {
+        if (token.AccessToken is null)
+        {
+            throw new ArgumentNullException(nameof(token), "Token cannot be null.");
+        }
+        return await _req<DiscordConnection>("users/@me/connections");
+    }
+
+    public string GetAuthorizationUrl(string state)
+    {
+
+        NameValueCollection query = new()
+        {
+            ["client_id"] = clientId.ToString(),
+            ["redirect_uri"] = redirectUri,
+            ["response_type"] = "code",
+            ["scope"] = scopes.ToString(),
+            ["state"] = state,
+            ["prompt"] = prompt ? "consent" : "none"
+        };
+
+        var uriBuilder = new UriBuilder("https://discord.com/api/oauth2/authorize")
+        {
+            Query = query.ToString()
+        };
+
+        return uriBuilder.ToString();
+        
+    }
+
+    public IToken GetToken(CancellationToken cancellationToken = default)
+    {
+        if (token.AccessToken is null)
+        {
+            throw new ArgumentNullException(nameof(token), "Token cannot be null.");
+        }
+        return token;
+    }
+}