public AccessToken(AccessToken_JSON json)
{
this.token = json.access_token;
this.type = json.token_type;
this.expiration = DateTime.Now.AddSeconds(json.expires_in);
this.scope = json.scope;
}
/// <summary>
/// Coroutine checks the cached access token validity. If it isn't valid, retrieves a token from PlayerPrefs if it exists, or get a new token from Blizzard using OAuth.
/// </summary>
/// <param name="region">Region used to get the access token.</param>
/// <param name="result">Action to execute with the access token once retrieved.</param>
/// <returns></returns>
public static IEnumerator CheckAccessToken(BattleNetRegion region = BattleNetRegion.UnitedStates, Action <string> result = null)
{
DateTime currentDate = DateTime.Now;
if (accessToken != null && accessToken.token.Length <= 0 && accessToken.expiration >= currentDate)
{
// If we already have a valid access token in the cache, update it and skip the rest
SetPrefsToken(PREFS_TOKEN_GENERAL, accessToken);
Debug.LogFormat("Cached token still valid : '{0}' (expires {1})", accessToken.token, accessToken.expiration.ToString());
if (result != null)
{
result(accessToken.token);
}
yield break;
}
else
{
// Making sure that we don't keep anything from the invalid "token"
accessToken = null;
// If the token is invalid, try to fetch it from the PlayerPrefs first
AccessToken storedToken = GetPrefsToken(PREFS_TOKEN_GENERAL);
if (storedToken != null && storedToken.token.Length > 0 && storedToken.expiration > currentDate)
{
// If the stored access token is still valid, replace the cache with it and skip the rest
Debug.LogFormat("Stored token still valid : '{0}' (expires {1})", storedToken.token, storedToken.expiration.ToString());
if (result != null)
{
result(storedToken.token);
}
accessToken = storedToken;
yield break;
}
else
{
Debug.Log("Invalid access token, retrieving a new token...");
// The stored token is also invalid, fetch an entirely new token, cache it, and store it
string url = string.Concat(URL_START, RegionToString(region), OAUTH_TOKEN_URL);
Dictionary <string, string> form = new Dictionary <string, string>()
{
{ "grant_type", "client_credentials" },
{ "client_id", AppInfos.BlizzardClientID },
{ "client_secret", AppInfos.BlizzardClientSecret }
};
UnityWebRequest tokenRequest = UnityWebRequest.Post(url, form);
yield return(tokenRequest.SendWebRequest());
if (!tokenRequest.isNetworkError && !tokenRequest.isHttpError)
{
string resultContent = tokenRequest.downloadHandler.text;
AccessToken_JSON json = JsonUtility.FromJson <AccessToken_JSON>(resultContent);
accessToken = new AccessToken(json);
SetPrefsToken(PREFS_TOKEN_GENERAL, accessToken);
Debug.LogFormat("Access token granted : '{0}' ; expires {1}", accessToken.token, accessToken.expiration.ToString());
if (result != null)
{
result(accessToken.token);
}
}
else
{
Debug.LogError("<color=red>Error : </color>" + tokenRequest.error);
}
}
}
}
