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package main
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import (
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"html/template"
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"log"
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"net/http"
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)
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const css = `
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body {
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font-family: Arial, sans-serif;
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background-color: #f2f2f2;
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margin: 0;
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}
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.header {
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text-align: center;
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margin-bottom: 20px;
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}
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.dex {
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font-size: 2em;
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font-weight: bold;
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color: #3F9FD8; /* Main color */
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}
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.example-app {
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font-size: 1em;
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color: #EF4B5C; /* Secondary color */
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}
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.form-instructions {
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text-align: center;
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margin-bottom: 15px;
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font-size: 1em;
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color: #555;
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}
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hr {
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border: none;
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border-top: 1px solid #ccc;
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margin-top: 10px;
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margin-bottom: 20px;
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}
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label {
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flex: 1;
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font-weight: bold;
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color: #333;
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}
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p {
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margin-bottom: 15px;
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display: flex;
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align-items: center;
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}
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input[type="text"] {
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flex: 2;
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padding: 8px;
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border: 1px solid #ccc;
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border-radius: 4px;
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outline: none;
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}
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input[type="checkbox"] {
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margin-left: 10px;
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transform: scale(1.2);
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}
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.back-button {
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display: inline-block;
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padding: 8px 16px;
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background-color: #EF4B5C; /* Secondary color */
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color: white;
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border: none;
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border-radius: 4px;
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cursor: pointer;
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font-size: 12px;
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text-decoration: none;
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transition: background-color 0.3s ease, transform 0.2s ease;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
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position: fixed;
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right: 20px;
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bottom: 20px;
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}
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.back-button:hover {
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background-color: #C43B4B; /* Darker shade of secondary color */
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}
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.token-block {
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background-color: #fff;
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padding: 10px 15px;
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border-radius: 8px;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
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margin-bottom: 15px;
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word-wrap: break-word;
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display: flex;
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flex-direction: column;
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gap: 5px;
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position: relative;
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}
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.token-title {
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font-weight: bold;
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display: flex;
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justify-content: space-between;
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align-items: center;
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}
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.token-title a {
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font-size: 0.9em;
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text-decoration: none;
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color: #3F9FD8; /* Main color */
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}
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.token-title a:hover {
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text-decoration: underline;
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}
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.token-code {
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overflow-wrap: break-word;
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word-break: break-all;
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white-space: normal;
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}
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pre {
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white-space: pre-wrap;
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background-color: #f9f9f9;
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padding: 8px;
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border-radius: 4px;
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border: 1px solid #ddd;
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margin: 0;
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font-family: 'Courier New', Courier, monospace;
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overflow-x: auto;
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font-size: 0.9em;
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position: relative;
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margin-top: 5px;
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}
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pre .key {
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color: #c00;
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}
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pre .string {
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color: #080;
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}
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pre .number {
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color: #00f;
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}
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`
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var indexTmpl = template.Must(template.New("index.html").Parse(`<html>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Example App - Login</title>
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<style>
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` + css + `
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body {
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display: flex;
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justify-content: center;
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align-items: center;
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height: 100vh;
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flex-direction: column;
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}
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form {
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background-color: #fff;
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padding: 20px;
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border-radius: 8px;
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box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
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width: 100%;
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max-width: 400px;
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}
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input[type="submit"] {
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width: 100%;
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padding: 10px;
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background-color: #3F9FD8; /* Main color */
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color: white;
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border: none;
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border-radius: 4px;
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cursor: pointer;
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font-size: 16px;
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}
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input[type="submit"]:hover {
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background-color: #357FAA; /* Darker shade of main color */
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}
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</style>
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</head>
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<body>
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<div class="header">
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<div class="dex">Dex</div>
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<div class="example-app">Example App</div>
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</div>
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<form action="/login" method="post">
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<div class="form-instructions">
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If needed, customize your login settings below, then click <strong>Login</strong> to proceed.
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</div>
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<hr/>
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<p>
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<label for="cross_client">Authenticate for:</label>
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<input type="text" id="cross_client" name="cross_client" placeholder="list of client-ids">
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</p>
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<p>
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<label for="extra_scopes">Extra scopes:</label>
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<input type="text" id="extra_scopes" name="extra_scopes" placeholder="list of scopes">
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</p>
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<p>
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<label for="connector_id">Connector ID:</label>
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<input type="text" id="connector_id" name="connector_id" placeholder="connector id">
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</p>
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<p>
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<label for="offline_access">Request offline access:</label>
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<input type="checkbox" id="offline_access" name="offline_access" value="yes" checked>
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</p>
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<p>
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<input type="submit" value="Login">
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</p>
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</form>
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</body>
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</html>`))
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func renderIndex(w http.ResponseWriter) {
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renderTemplate(w, indexTmpl, nil)
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}
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type tokenTmplData struct {
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IDToken string
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AccessToken string
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RefreshToken string
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RedirectURL string
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Claims string
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}
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var tokenTmpl = template.Must(template.New("token.html").Parse(`<html>
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Tokens</title>
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<style>
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` + css + `
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body {
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color: #333;
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margin: 0;
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padding: 20px;
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position: relative;
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}
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input[type="submit"] {
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margin-top: 10px;
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padding: 8px 16px;
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background-color: #3F9FD8; /* Main color */
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color: white;
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border: none;
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border-radius: 4px;
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cursor: pointer;
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font-size: 14px;
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transition: background-color 0.3s ease;
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}
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input[type="submit"]:hover {
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background-color: #357FAA; /* Darker shade of main color */
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}
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</style>
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</head>
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<body>
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{{ if .IDToken }}
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<div class="token-block">
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<div class="token-title">
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ID Token:
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<a href="#" onclick="window.open('https://jwt.io/#debugger-io?token=' + encodeURIComponent('{{ .IDToken }}'), '_blank')">Decode on jwt.io</a>
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</div>
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<pre><code class="token-code">{{ .IDToken }}</code></pre>
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</div>
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{{ end }}
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{{ if .AccessToken }}
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<div class="token-block">
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<div class="token-title">
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Access Token:
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<a href="#" onclick="window.open('https://jwt.io/#debugger-io?token=' + encodeURIComponent('{{ .AccessToken }}'), '_blank')">Decode on jwt.io</a>
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</div>
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<pre><code class="token-code">{{ .AccessToken }}</code></pre>
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</div>
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{{ end }}
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{{ if .Claims }}
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<div class="token-block">
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<div class="token-title">Claims:</div>
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<pre><code id="claims">{{ .Claims }}</code></pre>
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</div>
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{{ end }}
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{{ if .RefreshToken }}
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<div class="token-block">
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<div class="token-title">Refresh Token:</div>
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<pre><code class="token-code">{{ .RefreshToken }}</code></pre>
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<form action="{{ .RedirectURL }}" method="post">
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<input type="hidden" name="refresh_token" value="{{ .RefreshToken }}">
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<input type="submit" value="Redeem refresh token">
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</form>
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</div>
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{{ end }}
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<a href="/" class="back-button">Back to Home</a>
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<script>
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// Simple JSON syntax highlighter
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document.addEventListener("DOMContentLoaded", function() {
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const claimsElement = document.getElementById("claims");
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if (claimsElement) {
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try {
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const json = JSON.parse(claimsElement.textContent);
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claimsElement.innerHTML = syntaxHighlight(json);
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} catch (e) {
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console.error("Invalid JSON in claims:", e);
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}
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}
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});
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function syntaxHighlight(json) {
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if (typeof json != 'string') {
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json = JSON.stringify(json, undefined, 2);
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}
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json = json.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>');
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return json.replace(/("(\\u[\da-fA-F]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|\b\d+\b)/g, function (match) {
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let cls = 'number';
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if (/^"/.test(match)) {
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if (/:$/.test(match)) {
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cls = 'key';
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} else {
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cls = 'string';
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}
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} else if (/true|false/.test(match)) {
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cls = 'boolean';
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} else if (/null/.test(match)) {
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cls = 'null';
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}
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return '<span class="' + cls + '">' + match + '</span>';
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});
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}
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</script>
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</body>
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</html>
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`))
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func renderToken(w http.ResponseWriter, redirectURL, idToken, accessToken, refreshToken, claims string) {
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|
|
renderTemplate(w, tokenTmpl, tokenTmplData{
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|
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IDToken: idToken,
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|
AccessToken: accessToken,
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RefreshToken: refreshToken,
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RedirectURL: redirectURL,
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Claims: claims,
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|
})
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|
}
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|
|
func renderTemplate(w http.ResponseWriter, tmpl *template.Template, data interface{}) {
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|
|
err := tmpl.Execute(w, data)
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|
|
if err == nil {
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|
|
return
|
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|
|
}
|
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|
|
switch err := err.(type) {
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|
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|
|
case *template.Error:
|
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|
|
// An ExecError guarantees that Execute has not written to the underlying reader.
|
|
|
|
|
log.Printf("Error rendering template %s: %s", tmpl.Name(), err)
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|
// TODO(ericchiang): replace with better internal server error.
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|
|
http.Error(w, "Internal server error", http.StatusInternalServerError)
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|
|
default:
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|
|
// An error with the underlying write, such as the connection being
|
|
|
|
|
// dropped. Ignore for now.
|
|
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|
|
}
|
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|
|
}
|
