use serde::Deserialize;

#[derive(Debug, Deserialize)]
struct AppResponse<T> {
    code: i32,
    message: String,
    data: Option<T>,
}

#[derive(Debug, Deserialize)]
struct RefreshResponseData {
    access_token: String,
    refresh_token: String,
    token_type: Option<String>,
    expires_in: usize,
}

#[test]
fn can_decode_iam_refresh_response_snake_case() {
    let json = r#"
    {
      "code": 0,
      "message": "ok",
      "data": {
        "access_token": "a",
        "refresh_token": "r",
        "token_type": "Bearer",
        "expires_in": 7200
      }
    }
    "#;

    let parsed: AppResponse<RefreshResponseData> = serde_json::from_str(json).unwrap();
    let data = parsed.data.unwrap();
    assert_eq!(data.access_token, "a");
    assert_eq!(data.refresh_token, "r");
    assert_eq!(data.token_type.as_deref(), Some("Bearer"));
    assert_eq!(data.expires_in, 7200);
}