48 lines
No EOL
2 KiB
C#
48 lines
No EOL
2 KiB
C#
using System.Diagnostics.CodeAnalysis;
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using System.Web;
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namespace Foxnouns.Backend.Services;
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public class RemoteAuthService(Config config)
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{
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private readonly HttpClient _httpClient = new();
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private readonly Uri _discordTokenUri = new("https://discord.com/api/oauth2/token");
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private readonly Uri _discordUserUri = new("https://discord.com/api/v10/users/@me");
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public async Task<RemoteUser> RequestDiscordTokenAsync(string code, string state, CancellationToken ct = default)
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{
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var redirectUri = $"{config.BaseUrl}/auth/login/discord";
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var resp = await _httpClient.PostAsync(_discordTokenUri, new FormUrlEncodedContent(
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new Dictionary<string, string>
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{
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{ "client_id", config.DiscordAuth.ClientId! },
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{ "client_secret", config.DiscordAuth.ClientSecret! },
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{ "grant_type", "authorization_code" },
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{ "code", code },
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{ "redirect_uri", redirectUri }
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}
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), ct);
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resp.EnsureSuccessStatusCode();
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var token = await resp.Content.ReadFromJsonAsync<DiscordTokenResponse>(ct);
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if (token == null) throw new FoxnounsError("Discord token response was null");
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var req = new HttpRequestMessage(HttpMethod.Get, _discordUserUri);
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req.Headers.Add("Authorization", $"{token.token_type} {token.access_token}");
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var resp2 = await _httpClient.SendAsync(req, ct);
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resp2.EnsureSuccessStatusCode();
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var user = await resp2.Content.ReadFromJsonAsync<DiscordUserResponse>(ct);
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if (user == null) throw new FoxnounsError("Discord user response was null");
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return new RemoteUser(user.id, user.username);
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}
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[SuppressMessage("ReSharper", "InconsistentNaming")]
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private record DiscordTokenResponse(string access_token, string token_type);
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[SuppressMessage("ReSharper", "InconsistentNaming")]
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private record DiscordUserResponse(string id, string username);
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public record RemoteUser(string Id, string Username);
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} |