ousia_ledger/
value_object.rs

1// ledger/src/value_object.rs
2use chrono::{DateTime, Utc};
3use serde::{Deserialize, Serialize};
4use uuid::Uuid;
5
6#[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq)]
7pub enum ValueObjectState {
8    Alive,
9    Reserved,
10    Burned,
11}
12
13impl ValueObjectState {
14    pub fn can_transition_to(&self, target: ValueObjectState) -> bool {
15        match (self, target) {
16            (s1, s2) if s1 == &s2 => true,
17            (ValueObjectState::Alive, ValueObjectState::Reserved) => true,
18            (ValueObjectState::Alive, ValueObjectState::Burned) => true,
19            (ValueObjectState::Reserved, ValueObjectState::Alive) => true,
20            (ValueObjectState::Reserved, ValueObjectState::Burned) => true,
21            (ValueObjectState::Burned, _) => false,
22            _ => false,
23        }
24    }
25
26    pub fn is_alive(&self) -> bool {
27        matches!(self, ValueObjectState::Alive)
28    }
29
30    pub fn is_reserved(&self) -> bool {
31        matches!(self, ValueObjectState::Reserved)
32    }
33
34    pub fn is_burned(&self) -> bool {
35        matches!(self, ValueObjectState::Burned)
36    }
37
38    pub fn is_spendable(&self) -> bool {
39        self.is_alive()
40    }
41}
42
43#[derive(Debug, Clone, Serialize, Deserialize)]
44pub struct ValueObject {
45    pub id: Uuid,
46    pub asset: Uuid,
47    pub owner: Uuid,
48    pub amount: u64,
49    pub state: ValueObjectState,
50    pub reserved_for: Option<Uuid>,
51    pub created_at: DateTime<Utc>,
52}
53
54impl ValueObject {
55    pub fn new_alive(asset_id: Uuid, owner: Uuid, amount: u64) -> Self {
56        Self {
57            id: uuid::Uuid::now_v7(),
58            asset: asset_id,
59            owner,
60            amount,
61            state: ValueObjectState::Alive,
62            reserved_for: None,
63            created_at: Utc::now(),
64        }
65    }
66
67    pub fn new_reserved(asset_id: Uuid, owner: Uuid, amount: u64, reserved_for: Uuid) -> Self {
68        Self {
69            id: uuid::Uuid::now_v7(),
70            asset: asset_id,
71            owner,
72            amount,
73            state: ValueObjectState::Reserved,
74            reserved_for: Some(reserved_for),
75            created_at: Utc::now(),
76        }
77    }
78}
ousia_ledger/value_object.rs

ousia_ledger/
value_object.rs
