public async Task <string> CreateJsApiConfigScriptAsync(WeChatGeneralAccessToken accessToken, bool withScriptTag = true, string enableJsApiNames = _defaultEnabledJsApiNames, string enableOpenTags = _defaultEnabledOpenTags)
{
var cfg = await CreateJsApiConfigAsync(accessToken);
var script = @"
function configWeChatJsApi() {
if (typeof(wx) == undefined) {
setTimeout(configWeChatJsApi, 50);
}
else {
wx.config({
debug: false,
appId: '" + cfg.AppId + @"',
timestamp: " + cfg.Timestamp + @",
nonceStr: '" + cfg.NonceStr + @"',
signature: '" + cfg.Signature + @"',
jsApiList: [" + string.Join(',', enableJsApiNames.Split(',', '|').Select(x => $"'{x.Trim()}'")) + @"],
openTagList: [" + string.Join(',', enableOpenTags.Split(',', '|').Select(x => $"'{x.Trim()}'")) + @"]
});
}
}
setTimeout(configWeChatJsApi, 50);" ;
if (!withScriptTag)
{
return(script);
}
return($"<script type='text/javascript'>\r\n{script}\r\n</script>");
}
public async Task <Result> SendSubscribedMessageAsync <T>(WeChatGeneralAccessToken accessToken, string openId, T data, string?url) where T : IWeChatTemplateMessage
{
var api = "https://" + $"api.weixin.qq.com/cgi-bin/message/subscribe/bizsend?access_token={accessToken.AccessToken}";
var message = new {
touser = openId,
template_id = data.TemplateId,
page = url,
data = data
};
var serialized = System.Text.Json.JsonSerializer.Serialize((object)message, new JsonSerializerOptions(JsonSerializerDefaults.Web));
var response = await DefaultHttpClient.Instance.PostAsync(api, new StringContent(serialized));
var json = await response.Content.ReadAsStringAsync();
var d = JsonConvert.DeserializeObject <dynamic>(json);
var ok = d.errcode == null || (int)d.errcode == 0;
if (!ok)
{
return(new Failure((int)d.errcode + ": " + d.errmsg));
}
return(new Success());
}
public async Task <WeChatJsApiConfig> CreateJsApiConfigAsync(WeChatGeneralAccessToken accessToken)
{
if (_httpContextAccessor.HttpContext == null)
{
throw new InvalidProgramException("Can not call this method when IHttpContextAccessor.HttpContext is null.");
}
_options.RequireMobilePlatformSettings();
var config = new WeChatJsApiConfig {
AppId = _options.MobilePlatformAppId !,
NonceStr = Crypto.RandomString(16),
Timestamp = DateTime.Now.Timestamp(),
Ticket = await GetJsApiTicketAsync(accessToken),
};
var sb = new StringBuilder();
sb.Append("jsapi_ticket=" + config.Ticket);
sb.Append("&noncestr=" + config.NonceStr);
sb.Append("×tamp=" + config.Timestamp.ToString());
sb.Append("&url=" + _httpContextAccessor.HttpContext.Request.FullUrl().Split('#').First());
config.RawString = sb.ToString();
config.Signature = Crypto.SHA1(config.RawString);
return(config);
}
public async Task <string> GetJsApiTicketAsync(WeChatGeneralAccessToken accessToken)
{
return(await _cache.GetOrCreate(accessToken.AccessToken + nameof(GetJsApiTicketAsync), async entry => {
var url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket" + $"?access_token={accessToken.AccessToken}&type=jsapi";
try {
var json = await DefaultHttpClient.Instance.GetStringAsync(url);
var d = JsonConvert.DeserializeObject <dynamic>(json);
var ok = d.errcode == null || (int)d.errcode == 0;
entry.SetAbsoluteExpiration(TimeSpan.FromSeconds(ok ? (int)d.expires_in : 1));
return d.ticket ?? ((int)d.errcode + ": " + d.errmsg);
}
catch (Exception e) {
return e.Message;
}
}));
}
