public void Auth(string code = "")
{
if (!string.IsNullOrEmpty(code))
{
InstagramCodeContainer.GetInstance().AccessToken = code;
}
}
static void Main(string[] args)
{
//read from application configuration
string clientId = Settings.Default.clientId;
string clientSecret = Settings.Default.clientSecret;
string tagName = Settings.Default.tagName;
string outputDir = Settings.Default.outputDir;
string hostAddress = Settings.Default.hostAddress;
//Create server instance
var instagramService = new InstagramAuthService(new Uri(hostAddress));
//open the authentication server async and wait
instagramService.Open();
Console.WriteLine("server opened...");
//try to get user authentication
Application.Run(new InstagramAuthForm(String.Format("https://api.instagram.com/oauth/authorize?client_id={0}&client_secret={1}&response_type=code&redirect_uri={2}/instagram/Auth&redirect_type=code", clientId, clientSecret, hostAddress)));
//Try to post the code to server to get authorization code
NameValueCollection parameters = new NameValueCollection
{
{ "client_id", clientId },
{ "client_secret", clientSecret },
{ "grant_type", "authorization_code" },
{ "redirect_uri", string.Format("{0}/instagram/Auth", hostAddress) },
{ "code", InstagramCodeContainer.GetInstance().AccessToken }
};
WebClient client = new WebClient();
var result = client.UploadValues(new Uri("https://api.instagram.com/oauth/access_token"), parameters);
var response = Encoding.Default.GetString(result);
string responseAccessToken = JObject.Parse(response).SelectToken("access_token").ToString();
WebRequest webRequest = null;
string nextPageUrl = String.Empty;
Console.WriteLine("we are ready to start downloading your photos, please hit enter...");
Console.Read();
if (!Directory.Exists(outputDir))
{
Directory.CreateDirectory(outputDir);
}
do
{
if (webRequest == null && string.IsNullOrEmpty(nextPageUrl))
{
webRequest = HttpWebRequest.Create(String.Format("https://api.instagram.com/v1/tags/{0}/media/recent?access_token={1}", tagName, responseAccessToken));
}
else
{
webRequest = HttpWebRequest.Create(nextPageUrl);
}
var responseStream = webRequest.GetResponse().GetResponseStream();
Encoding encode = Encoding.Default;
StringBuilder content = new StringBuilder();
using (StreamReader reader = new StreamReader(responseStream, encode))
{
while (!reader.EndOfStream)
{
content.Append(reader.ReadLine());
}
}
JToken token = JObject.Parse(content.ToString());
var pagination = token.SelectToken("pagination");
if (pagination != null && pagination.SelectToken("next_url") != null)
{
nextPageUrl = pagination.SelectToken("next_url").ToString();
}
else
{
nextPageUrl = null;
}
var images = token.SelectToken("data").ToArray();
Parallel.ForEach(images, image =>
{
var imageId = image.SelectToken("id");
if (File.Exists(string.Format("{0}\\{1}.jpg", outputDir, imageId)))
{
return;
}
var imageUrl =
image.SelectToken("images")
.SelectToken("standard_resolution")
.SelectToken("url")
.ToString();
if (String.IsNullOrEmpty(imageUrl))
{
Console.WriteLine("broken image URL");
}
var imageResponse = WebRequest.Create(imageUrl).GetResponse().GetResponseStream();
using (var imageWriter = new StreamWriter(String.Format("{0}\\{1}.jpg", outputDir, imageId)))
{
//to avoid exception here let's leave this item's loop if something happened
if (imageResponse == null)
{
return;
}
imageResponse.CopyTo(imageWriter.BaseStream);
imageResponse.Flush();
}
var caption = image.SelectToken("caption").SelectToken("text");
using (var captionText = new StreamWriter(string.Format("{0}\\{1}.txt", outputDir, imageId)))
{
captionText.Write(caption);
}
});
}while (!String.IsNullOrEmpty(nextPageUrl));
Console.Read();
}
