made-core 0.3.0

Domain core of MADE: entities, value objects, events, ports. No IO.
Documentation 
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use serde::{Deserialize, Serialize};
use serde_json::Value;

use crate::error::DomainError;
use crate::value_objects::Attributes;

use super::GuardName;

#[derive(Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize)]
#[serde(transparent)]
pub struct CeremonyContext(Attributes);

impl CeremonyContext {
    #[must_use]
    pub fn new(attributes: Attributes) -> Self {
        Self(attributes)
    }

    #[must_use]
    pub fn empty() -> Self {
        Self::default()
    }

    pub fn with_guard_approval(self, guard_name: &GuardName) -> Result<Self, DomainError> {
        let mut entries = self.0.into_inner();
        entries.insert(guard_name.as_str().to_owned(), Value::Bool(true));
        Ok(Self(Attributes::new(entries)?))
    }

    #[must_use]
    pub fn is_guard_approved(&self, guard_name: &GuardName) -> bool {
        self.0
            .get(guard_name.as_str())
            .and_then(Value::as_bool)
            .unwrap_or(false)
    }

    #[must_use]
    pub fn attributes(&self) -> &Attributes {
        &self.0
    }
}