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decide_core/
utils.rs

1use rhai::{Engine, Scope};
2use rhai::Dynamic;
3use crate::types::{User, Resource};
4
5pub fn evaluate_condition(expr: &str, user: &User, resource: &Resource) -> bool {
6    // Create engine and scope
7    let engine = Engine::new();
8    let mut scope = Scope::new();
9
10    // Exposing fields for user to use in conditions
11    scope.push("user_id", Dynamic::from(user.id.clone()));
12    scope.push("user_roles", Dynamic::from_array(
13        user.roles.iter().map(|r| Dynamic::from(r.clone())).collect()
14    ));
15    scope.push("resource_owner", Dynamic::from(resource.owner_id.clone()));
16    scope.push("resource_name", Dynamic::from(resource.resource_name.clone()));
17    scope.push("resource_type", Dynamic::from(resource.resource_type.clone()));
18
19    match engine.eval_with_scope::<bool>(&mut scope, expr) {
20        Ok(result) => result,
21        Err(e) => {
22            // Return value
23            false
24        }
25    }
26}
27