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feat(domain): implement RelayState enum with serialization support

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Add RelayState enum to domain layer with:
- Display, Debug, Clone, Copy, PartialEq, Eq derives
- serde Serialize/Deserialize traits for API JSON handling
- Type-safe representation of relay on/off states

TDD green phase: Tests from T019 now pass.

Ref: T020 (specs/001-modbus-relay-control/tasks.md)
This commit is contained in:
Lucien Cartier-Tilet
2026-01-03 22:49:13 +01:00
parent d6cbf0f4ae
commit e81a128e7f
2 changed files with 4 additions and 2 deletions
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4
backend/src/domain/relay/types/relaystate.rs
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@@ -1,11 +1,13 @@
/// State of a relay (on or off). /// State of a relay (on or off).
/// ///
/// Represents the binary state of a relay channel in the Modbus controller. /// Represents the binary state of a relay channel in the Modbus controller.
#[derive(Debug, Clone, Copy, PartialEq, Eq)] #[derive(Debug, Clone, Copy, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
pub enum RelayState { pub enum RelayState {
/// Relay is energized (circuit closed). /// Relay is energized (circuit closed).
#[serde(rename = "on")]
On, On,
/// Relay is de-energized (circuit open). /// Relay is de-energized (circuit open).
#[serde(rename = "off")]
Off, Off,
} }

2
specs/001-modbus-relay-control/tasks.md
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@@ -225,7 +225,7 @@
- **File**: src/domain/relay.rs - **File**: src/domain/relay.rs
- **Complexity**: Low | **Uncertainty**: Low - **Complexity**: Low | **Uncertainty**: Low
- [ ] **T020** [P] [US1] [TDD] Implement RelayState enum - [x] **T020** [P] [US1] [TDD] Implement RelayState enum
- Enum: On, Off - Enum: On, Off
- Implement Display, Debug, Clone, Copy, PartialEq, Eq, serde::Serialize/Deserialize - Implement Display, Debug, Clone, Copy, PartialEq, Eq, serde::Serialize/Deserialize
- **File**: src/domain/relay.rs - **File**: src/domain/relay.rs