(function () {
    'use strict';

    var Auth = {
    	identityProvider: "COGNITO",
    	identityPoolId: "us-west-2:8e3a0171-3a11-42b1-9705-cf23b9fe07ff",
    	tokenScopes: [
    		"openid"
    	],
    	authDomain: "hdrndgl-loginprovider.auth.us-west-2.amazoncognito.com",
    	userPoolWebClientId: "ms6bvd98n99v6a6ggohl9qesm",
    	mandatorySignIn: true,
    	region: "us-west-2",
    	userPoolId: "us-west-2_9dI8B4Ye1"
    };
    var ImageBucket = "imageuploadcfnstack-imguploadbucket-11jhoo5c21r6w";
    var config = {
    	Auth: Auth,
    	ImageBucket: ImageBucket
    };

    let auth = undefined;
    let creds = undefined;

    function showError() {
        console.log.apply(arguments);
        let ErrorPane = document.getElementById('ErrorPane');
        ErrorPane.classList.add('error');
        ErrorPane.innerText = "";
        for(let argument of arguments) {
            ErrorPane.innerText += err;
        }
        return -1;
    }

    function upload() {

        let idp = `cognito-idp.${config.Auth.region}.amazonaws.com/${config.Auth.userPoolId}`;

        AWS.config.region = config.Auth.region;
        AWS.config.credentials = new AWS.CognitoIdentityCredentials({
            IdentityPoolId: config.Auth.identityPoolId,
            Logins: {
                [idp]: creds.idToken.jwtToken
            }
        });

        AWS.config.credentials.refresh((error) => {
          if (error) {
            showError(error);
          } else {
            console.log('Successfully logged!');
              var s3 = new AWS.S3({
                  apiVersion: '2006-03-01',
                  region: config.Auth.region,
                  params: {Bucket: config.ImageBucket}
              });

              let PhotoPicker = document.getElementById('PhotoPicker');
              let files = PhotoPicker.files;

              if (!files.length) {
                  return showError('You need to select photos to upload.');
              }

              let prefix = (new Date()).toISOString() + '/';

              let UploadList = document.getElementById('UploadList');

              for(let file of files) {
                  let photoKey = prefix + file.name;

                  let upload = document.createElement("div");
                  upload.innerText = photoKey;
                  upload.classList.add('upload');
                  UploadList.appendChild(upload);

                  s3.upload({
                      Key: photoKey,
                      Body: file,
                  }, (err, data) => {
                      if (err) {
                          upload.classList.add('error');
                          console.dir(err);
                          return showError("Error Uploading ", err.message);
                      }
                      upload.classList.add('uploaded');
                      console.log("uploaded ", photoKey);
                  });
              }

              PhotoPicker.value = "";
          }
        });

    }

    function onLoad() {

        let LoginPane = document.getElementById('LoginPane');
        let ErrorPane = document.getElementById('ErrorPane');
        let ContentPane = document.getElementById('ContentPane');

        let authData = {
            ClientId: config.Auth.userPoolWebClientId,
            AppWebDomain : config.Auth.authDomain,
            TokenScopesArray : config.Auth.tokenScopes,
            RedirectUriSignIn : 'https://hdr.nd.gl',
            RedirectUriSignOut : 'https://hdr.nd.gl',
            IdentityProvider : config.Auth.identityProvider,
            UserPoolId : config.Auth.userPoolId,
            AdvancedSecurityDataCollectionFlag : false
        };

        auth = new AmazonCognitoIdentity.CognitoAuth(authData);
        auth.userhandler = {
            onSuccess: function(result) {
                creds = result;
                LoginPane.classList.add('loggedin');
                ContentPane.classList.add('loggedin');
                ErrorPane.classList.remove('error');
            },
            onFailure: function(err) {
                showError(err);
            }
        };

        var curUrl = window.location.href;
        auth.parseCognitoWebResponse(curUrl);

        document.getElementById('BtnLogin').onclick = () => {
            auth.getSession();
        };
        auth.getSession();

        document.getElementById('BtnUpload').onclick = () => { upload(); };
    }

    var onReady = new Promise((resolve, reject) => {
        if(document.readyState === "complete" ||
           document.readyState === "loaded" ||
           document.readyState === "interactive") {
            resolve(document);
        }
        else {
            document.addEventListener('DOMContentLoaded', () => { resolve(document); }, false);
        }
    });

    onReady.then(onLoad);

}());