four 0.0.13

framework for creating AWS CloudFormation template
Documentation 
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use std::sync::LazyLock;

use derive_new::new;
use nutype::nutype;
use regex::Regex;
use serde::Serialize;

use crate::{convert::WillBe, iam::PolicyDocument};

#[nutype(
    validate(not_empty, len_char_max = 128, regex = r#"[\w+=,.@-]+"#),
    derive(Debug, Clone, Serialize)
)]
pub struct GroupName(String);

static GROUP_REGEX: LazyLock<Regex> = LazyLock::new(|| Regex::new(r#"[\w+=,.@-]+"#).unwrap());

fn valid_groups(groups: &Vec<String>) -> bool {
    groups
        .into_iter()
        .map(|g| !g.is_empty() && g.len() < 128 && GROUP_REGEX.is_match(g))
        .fold(false, |acc, x| acc || x)
}

#[nutype(
    validate(predicate = valid_groups),
    derive(Debug, Clone, Serialize)
)]
pub struct Groups(Vec<String>);

#[derive(Debug, Clone, Serialize, new)]
pub struct GroupPolicy {
    policy_name: WillBe<GroupPolicyName>,
    policy_document: PolicyDocument,
}

#[nutype(
    validate(not_empty, len_char_max = 128, regex = r#"[\w+=,.@-]+"#),
    derive(Debug, Clone, Serialize, TryFrom)
)]
pub struct GroupPolicyName(String);