Function jwt_encode 

pub fn jwt_encode<T>(body: &T) -> Result<String>
where
    T: Serialize,

Creates a signed JWT token from the provided claims.

This function serializes the claims data and creates a signed JWT token using the configured signing algorithm and secret. The resulting token can be used for authentication across EJ services.

Arguments

• body - Claims data to encode in the token (must be serializable)

Returns

• Ok(String) - Base64-encoded JWT token
• Err(Error) - Token creation or serialization errors

Security Notes

• Claims are not encrypted, only signed for integrity
• Include expiration claims to prevent token replay attacks
• Keep payload minimal to reduce token size and attack surface

Example

use ej_auth::jwt::{jwt_encode, jwt_decode};
use serde::{Serialize, Deserialize};
use std::env;
unsafe { env::set_var("JWT_SECRET", "MySuperSecret"); }

#[derive(Debug, PartialEq, Eq, Serialize, Deserialize)]
struct BuilderClaims {
    builder_id: String,
    exp: usize,
}

let claims = BuilderClaims {
    builder_id: "builder-001".to_string(),
    exp: 4118335200,
};

let token = jwt_encode(&claims).unwrap();
let token_data = jwt_decode::<BuilderClaims>(&token).unwrap();
assert_eq!(claims, token_data.claims);