Documentation API Konnect

https://konnect.example.com/oauth/authorize?
  client_id=your_client_id&
  redirect_uri=https://yourapp.com/callback&
  scope=first_name last_name email&
  state=random_state_string&
  code_challenge=E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM&
  code_challenge_method=S256

https://yourapp.com/callback?
  code=kc_a1b2c3d4e5f6...&
  state=random_state_string

{
  "grant_type": "authorization_code",
  "code": "kc_a1b2c3d4e5f6...",
  "client_id": "your_client_id",
  "client_secret": "your_client_secret",
  "redirect_uri": "https://yourapp.com/callback",
  "code_verifier": "original_code_verifier"
}

{
  "access_token": "at_...",
  "refresh_token": "rt_...",
  "token_type": "Bearer",
  "expires_in": 3600,
  "scope": "first_name last_name email"
}

{
  "sub": "123",
  "first_name": "John",
  "last_name": "Doe",
  "email": "john@example.com"
}

{
  "grant_type": "refresh_token",
  "refresh_token": "rt_...",
  "client_id": "your_client_id",
  "client_secret": "your_client_secret"
}

{
  "event": "user.connected",
  "timestamp": "2024-01-15T10:30:00.000Z",
  "app": {
    "id": 1,
    "name": "Mon Application",
    "clientId": "kc_abc123..."
  },
  "user": {
    "id": 42,
    "email": "user@example.com",
    "firstName": "John",
    "lastName": "Doe"
  },
  "scope": "first_name last_name email"
}

{
  "error": {
    "message": "Invalid access token",
    "code": -32600,
    "data": {
      "code": "UNAUTHORIZED",
      "httpStatus": 401
    }
  }
}

// Generate code verifier (random string)
function generateCodeVerifier() {
  const array = new Uint8Array(32)
  crypto.getRandomValues(array)
  return base64UrlEncode(array)
}

// Generate code challenge (SHA256 hash)
async function generateCodeChallenge(verifier) {
  const encoder = new TextEncoder()
  const data = encoder.encode(verifier)
  const hash = await crypto.subtle.digest('SHA-256', data)
  return base64UrlEncode(new Uint8Array(hash))
}

// Base64 URL encoding
function base64UrlEncode(buffer) {
  return btoa(String.fromCharCode(...buffer))
    .replace(/\+/g, '-')
    .replace(/\//g, '_')
    .replace(/=+$/, '')
}