Add bearer token automatically to Swagger UI using Swashbuckle Asp.Net Core

CustomSwagger.js

(function () {

    function getJwt(user, pass, success, error, complete) {
        console.log('getJwt ', user);
        $.ajax({
            url: '/api/login',
            type: 'POST',
            contentType: "application/json",
            dataType: "json",
            data: JSON.stringify({
                username: user,
                password: pass
            }),
            success: function (data) {
                success && success(data.data.token);
            },
            error: function (jqXhr, err, msg) {
                error && error(JSON.parse(jqXhr.responseText).error_description);

            },
            complete: complete
        });
    }

    function setNativeValue(element, value) {
        const valueSetter = Object.getOwnPropertyDescriptor(element, 'value').set;
        const prototype = Object.getPrototypeOf(element);
        const prototypeValueSetter = Object.getOwnPropertyDescriptor(prototype, 'value').set;
        
        if (valueSetter && valueSetter !== prototypeValueSetter) {
            prototypeValueSetter.call(element, value);
        } else {
          valueSetter.call(element, value);
        }
    }

    function setJwt(key) {
        console.log("setJwt ", key);
        var inputAuth = $('.auth-container :input[type=text]')[0];
        //inputAuth.off().val("Bearer " + key).change();
        //inputAuth.attr('value', 'Bearer ' + key);
        setNativeValue(inputAuth, 'Bearer ' + key);
        inputAuth.dispatchEvent(new Event('input', { bubbles: true }));
    }

    $(function () {
        setTimeout(() => {
            $('.btn.authorize').click(function () {
                setTimeout(() => {
                    var inputAuth = $('.auth-container :input[type=text]');
                    inputAuth.attr('placeholder', 'JWT | User,Pass');
                    inputAuth.off().on('change', function () {
                        var key = inputAuth.val();
                        if (key.indexOf(',') > -1) {
                            var user = key.split(',')[0].trim();
                            var pass = key.split(',')[1].trim();
                            inputAuth.prop("disabled", true);
                            getJwt(user, pass,
                                function (jwt) {
                                    inputAuth.css('background', '#65f30f');
                                    setJwt(jwt);
                                    window.localStorage.setItem('key', jwt);
                                },
                                function (err) {
                                    inputAuth.css('background', '#fd7474');
                                    //setJwt('');
                                    alert('Login failed. ', err);
                                }, function () {
                                    inputAuth.prop("disabled", false);
        
                                });
                        } else {
                            inputAuth.css('background', '#FFF');
                            //setJwt(key);
                        }
                    });
                    var oldKey = window.localStorage.getItem('key');
                    if (oldKey) {
                        setJwt(oldKey);
                    }
                }, 200);
            });

        }, 2000 );
    });
})();

Startup.cs

public void ConfigureServices(IServiceCollection services)
{
     // init codes
     //..
     services.AddSwaggerGen(c =>
      {
          c.SwaggerDoc("v1", new Info { Title = "BermudaPay API", Version = "v1" });
          c.AddSecurityDefinition("Bearer", new ApiKeyScheme
          {
              Description = "JWT Authorization header using the Bearer scheme. Example: \"Authorization: Bearer {token}\"",
              Name = "Authorization",
              In = "header",
              Type = "apiKey"
          });
          var security = new Dictionary<string, IEnumerable<string>>
          {
              {"Bearer", new string[] { }},
          };
          c.AddSecurityRequirement(security);
      });
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    app.UseStaticFiles();
    app.UseAuthentication();
    app.UseCorsMiddleware();
    // Enable middleware to serve generated Swagger as a JSON endpoint.
    app.UseSwagger();

    // Enable middleware to serve swagger-ui (HTML, JS, CSS, etc.), 
    // specifying the Swagger JSON endpoint.
    app.UseSwaggerUI(c =>
    {
        c.SwaggerEndpoint("/swagger/v1/swagger.json", "BermudaPay API V1");
        //c.InjectJavascript("/static/js/CustomSwagger.js");
        c.IndexStream = () => GetType().Assembly.GetManifestResourceStream("api.Resources.Swagger.index.html");
    });
    app.UseMvc();

}

Swagger.index.html

<!-- HTML for static distribution bundle build -->
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>%(DocumentTitle)</title>
  <link href="https://fonts.googleapis.com/css?family=Open+Sans:400,700|Source+Code+Pro:300,600|Titillium+Web:400,600,700" rel="stylesheet">
  <link rel="stylesheet" type="text/css" href="./swagger-ui.css" >
  <link rel="icon" type="image/png" href="./favicon-32x32.png" sizes="32x32" />
  <link rel="icon" type="image/png" href="./favicon-16x16.png" sizes="16x16" />
  <style>
    html
    {
      box-sizing: border-box;
      overflow: -moz-scrollbars-vertical;
      overflow-y: scroll;
    }
    *,
    *:before,
    *:after
    {
      box-sizing: inherit;
    }

    body {
      margin:0;
      background: #fafafa;
    }
  </style>
  %(HeadContent)
</head>

<body>

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="position:absolute;width:0;height:0">
  <defs>
    <symbol viewBox="0 0 20 20" id="unlocked">
          <path d="M15.8 8H14V5.6C14 2.703 12.665 1 10 1 7.334 1 6 2.703 6 5.6V6h2v-.801C8 3.754 8.797 3 10 3c1.203 0 2 .754 2 2.199V8H4c-.553 0-1 .646-1 1.199V17c0 .549.428 1.139.951 1.307l1.197.387C5.672 18.861 6.55 19 7.1 19h5.8c.549 0 1.428-.139 1.951-.307l1.196-.387c.524-.167.953-.757.953-1.306V9.199C17 8.646 16.352 8 15.8 8z"></path>
    </symbol>

    <symbol viewBox="0 0 20 20" id="locked">
      <path d="M15.8 8H14V5.6C14 2.703 12.665 1 10 1 7.334 1 6 2.703 6 5.6V8H4c-.553 0-1 .646-1 1.199V17c0 .549.428 1.139.951 1.307l1.197.387C5.672 18.861 6.55 19 7.1 19h5.8c.549 0 1.428-.139 1.951-.307l1.196-.387c.524-.167.953-.757.953-1.306V9.199C17 8.646 16.352 8 15.8 8zM12 8H8V5.199C8 3.754 8.797 3 10 3c1.203 0 2 .754 2 2.199V8z"/>
    </symbol>

    <symbol viewBox="0 0 20 20" id="close">
      <path d="M14.348 14.849c-.469.469-1.229.469-1.697 0L10 11.819l-2.651 3.029c-.469.469-1.229.469-1.697 0-.469-.469-.469-1.229 0-1.697l2.758-3.15-2.759-3.152c-.469-.469-.469-1.228 0-1.697.469-.469 1.228-.469 1.697 0L10 8.183l2.651-3.031c.469-.469 1.228-.469 1.697 0 .469.469.469 1.229 0 1.697l-2.758 3.152 2.758 3.15c.469.469.469 1.229 0 1.698z"/>
    </symbol>

    <symbol viewBox="0 0 20 20" id="large-arrow">
      <path d="M13.25 10L6.109 2.58c-.268-.27-.268-.707 0-.979.268-.27.701-.27.969 0l7.83 7.908c.268.271.268.709 0 .979l-7.83 7.908c-.268.271-.701.27-.969 0-.268-.269-.268-.707 0-.979L13.25 10z"/>
    </symbol>

    <symbol viewBox="0 0 20 20" id="large-arrow-down">
      <path d="M17.418 6.109c.272-.268.709-.268.979 0s.271.701 0 .969l-7.908 7.83c-.27.268-.707.268-.979 0l-7.908-7.83c-.27-.268-.27-.701 0-.969.271-.268.709-.268.979 0L10 13.25l7.418-7.141z"/>
    </symbol>


    <symbol viewBox="0 0 24 24" id="jump-to">
      <path d="M19 7v4H5.83l3.58-3.59L8 6l-6 6 6 6 1.41-1.41L5.83 13H21V7z"/>
    </symbol>

    <symbol viewBox="0 0 24 24" id="expand">
      <path d="M10 18h4v-2h-4v2zM3 6v2h18V6H3zm3 7h12v-2H6v2z"/>
    </symbol>

  </defs>
</svg>

<div id="swagger-ui"></div>

<!-- Workaround for https://github.com/swagger-api/swagger-editor/issues/1371 -->
<script>
  if (window.navigator.userAgent.indexOf("Edge") > -1) {
    console.log("Removing native Edge fetch in favor of swagger-ui's polyfill")
    window.fetch = undefined;
  }
</script>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="./swagger-ui-bundle.js"> </script>
<script src="./swagger-ui-standalone-preset.js"> </script>

<script>
  window.onload = function () {
    var configObject = JSON.parse('%(ConfigObject)');
    var oauthConfigObject = JSON.parse('%(OAuthConfigObject)');

    // Apply mandatory parameters
    configObject.dom_id = "#swagger-ui";
    configObject.presets = [SwaggerUIBundle.presets.apis, SwaggerUIStandalonePreset];
    configObject.layout = "StandaloneLayout";

    // If oauth2RedirectUrl isn't specified, use the built-in default
    if (!configObject.hasOwnProperty("oauth2RedirectUrl"))
      configObject.oauth2RedirectUrl = window.location.href.replace("index.html", "oauth2-redirect.html");

    // Build a system
    const ui = SwaggerUIBundle(configObject);

    // Apply OAuth config
    ui.initOAuth(oauthConfigObject);
  }
</script>

<!-- Custom Scripts -->
<script src="/static/js/CustomSwagger.js"> </script>


</body>

</html>

This script is only Swashbuckle for .net framework that uses old version of Swagger-ui (v2.2.10). Swashbuckle ASP.NET Core (v3) uses swagger-ui v3.x.
To add Bearer I changed @janmohammadi 's script:

1. To add Jquery support, I customized swagger index.html. How to customize index.html
2. There is no '#input_apiKey' and 'swaggerUi' elements. Used new selectors at CustomSwagger.js
3. You can not set 'swaggerUi.api.clientAuthorizations' so used react.js functions to set api key input.

   setNativeValue(inputAuth, 'Bearer ' + key);
   inputAuth.dispatchEvent(new Event('input', { bubbles: true }));

Thank you!
Check out my fork. It comes with a username and password input box.
https://gist.github.com/hubert17/44c3f772a414f9268e1a1da8c92a13d7

c.IndexStream = () => GetType().Assembly.GetManifestResourceStream("api.Resources.Swagger.index.html");
can u please explain above line i am not getting where to add my customize UI index html file,Please help me.