2020-05-15 19:06:24 +01:00
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using System;
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using System.Threading.Tasks;
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namespace SpotifyAPI.Web.Http
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{
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/// <summary>
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/// This Authenticator requests new credentials token on demand and stores them into memory.
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/// It is unable to query user specifc details.
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/// </summary>
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public class AuthorizationCodeAuthenticator : IAuthenticator
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{
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2020-05-25 17:00:38 +01:00
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public event EventHandler<AuthorizationCodeTokenResponse>? TokenRefreshed;
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2020-05-15 19:06:24 +01:00
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/// <summary>
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/// Initiate a new instance. The token will be refreshed once it expires.
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/// The initialToken will be updated with the new values on refresh!
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/// </summary>
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public AuthorizationCodeAuthenticator(string clientId, string clientSecret, AuthorizationCodeTokenResponse initialToken)
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{
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Ensure.ArgumentNotNull(clientId, nameof(clientId));
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Ensure.ArgumentNotNull(clientSecret, nameof(clientSecret));
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Ensure.ArgumentNotNull(initialToken, nameof(initialToken));
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InitialToken = initialToken;
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ClientId = clientId;
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ClientSecret = clientSecret;
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}
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/// <summary>
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/// The ClientID, defined in a spotify application in your Spotify Developer Dashboard
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/// </summary>
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public string ClientId { get; }
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/// <summary>
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/// The ClientID, defined in a spotify application in your Spotify Developer Dashboard
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/// </summary>
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public string ClientSecret { get; }
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/// <summary>
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/// The inital token passed to the authenticator. Fields will be updated on refresh.
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/// </summary>
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/// <value></value>
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public AuthorizationCodeTokenResponse InitialToken { get; }
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public async Task Apply(IRequest request, IAPIConnector apiConnector)
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{
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Ensure.ArgumentNotNull(request, nameof(request));
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if (InitialToken.IsExpired)
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{
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var tokenRequest = new AuthorizationCodeRefreshRequest(ClientId, ClientSecret, InitialToken.RefreshToken);
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var refreshedToken = await OAuthClient.RequestToken(tokenRequest, apiConnector).ConfigureAwait(false);
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InitialToken.AccessToken = refreshedToken.AccessToken;
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InitialToken.CreatedAt = refreshedToken.CreatedAt;
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InitialToken.ExpiresIn = refreshedToken.ExpiresIn;
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InitialToken.Scope = refreshedToken.Scope;
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InitialToken.TokenType = refreshedToken.TokenType;
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TokenRefreshed?.Invoke(this, InitialToken);
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}
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request.Headers["Authorization"] = $"{InitialToken.TokenType} {InitialToken.AccessToken}";
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}
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}
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}
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