angular-app/DECODE_TOKEN.html at main · brouri12/angular-app · GitHub

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<!DOCTYPE html>
<html>
<head>
    <title>JWT Token Decoder</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 800px;
            margin: 50px auto;
            padding: 20px;
            background: #1a1a2e;
            color: #eee;
        }
        textarea {
            width: 100%;
            height: 150px;
            margin: 10px 0;
            padding: 10px;
            background: #16213e;
            color: #eee;
            border: 1px solid #0f3460;
            border-radius: 5px;
        }
        button {
            background: rgb(0,200,151);
            color: white;
            padding: 10px 20px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }
        button:hover {
            background: rgb(0,180,135);
        }
        pre {
            background: #16213e;
            padding: 15px;
            border-radius: 5px;
            overflow-x: auto;
            border: 1px solid #0f3460;
        }
        .section {
            margin: 20px 0;
        }
        h2 {
            color: rgb(0,200,151);
        }
        .roles {
            background: #0f3460;
            padding: 10px;
            border-radius: 5px;
            margin: 10px 0;
        }
        .role {
            display: inline-block;
            background: rgb(0,200,151);
            color: white;
            padding: 5px 10px;
            margin: 5px;
            border-radius: 3px;
        }
    </style>
</head>
<body>
    <h1>🔐 JWT Token Decoder</h1>

    <div class="section">
        <h2>Instructions:</h2>
        <ol>
            <li>Ouvrez la console du navigateur (F12)</li>
            <li>Allez dans l'onglet "Application" ou "Stockage"</li>
            <li>Cliquez sur "Local Storage" → http://localhost:4201</li>
            <li>Copiez la valeur de "access_token"</li>
            <li>Collez-la ci-dessous et cliquez sur "Decode"</li>
        </ol>
    </div>

    <div class="section">
        <h2>Token JWT:</h2>
        <textarea id="token" placeholder="Collez votre token JWT ici..."></textarea>
        <button onclick="decodeToken()">Decode Token</button>
    </div>

    <div class="section" id="result" style="display:none;">
        <h2>Résultat:</h2>
        <div id="output"></div>
    </div>

    <script>
        function decodeToken() {
            const token = document.getElementById('token').value.trim();

            if (!token) {
                alert('Veuillez entrer un token');
                return;
            }

            try {
                // Decode JWT
                const base64Url = token.split('.')[1];
                const base64 = base64Url.replace(/-/g, '+').replace(/_/g, '/');
                const jsonPayload = decodeURIComponent(atob(base64).split('').map(c => {
                    return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
                }).join(''));

                const payload = JSON.parse(jsonPayload);

                // Extract roles
                const roles = payload.realm_access?.roles || [];

                // Display result
                let html = '<h3>Informations Utilisateur:</h3>';
                html += '<pre>' + JSON.stringify({
                    username: payload.preferred_username,
                    email: payload.email,
                    given_name: payload.given_name,
                    family_name: payload.family_name,
                    sub: payload.sub
                }, null, 2) + '</pre>';

                html += '<h3>Rôles (realm_access.roles):</h3>';
                html += '<div class="roles">';
                if (roles.length > 0) {
                    roles.forEach(role => {
                        html += '<span class="role">' + role + '</span>';
                    });
                } else {
                    html += '<p>Aucun rôle trouvé</p>';
                }
                html += '</div>';

                html += '<h3>Payload Complet:</h3>';
                html += '<pre>' + JSON.stringify(payload, null, 2) + '</pre>';

                document.getElementById('output').innerHTML = html;
                document.getElementById('result').style.display = 'block';

            } catch (e) {
                alert('Erreur lors du décodage du token: ' + e.message);
            }
        }
    </script>
</body>
</html>