Feature/enumerations module

CHANGELOG.rst

@@ -2,6 +2,88 @@
 Changelog
 =========
 
+Version 6.2.0 (2025-12-17)
+==========================
+
+**BREAKING CHANGES**: Enumerations refactored for type safety and consistency
+
+- **CommandCode moved**: Import from ``nwp500.enums`` instead of ``nwp500.constants``
+
+  .. code-block:: python
+
+     # OLD (removed)
+     from nwp500.constants import CommandCode
+
+     # NEW
+     from nwp500.enums import CommandCode
+     # OR
+     from nwp500 import CommandCode  # Still works
+
+Added
+-----
+
+- **Enumerations Module (``src/nwp500/enums.py``)**: Comprehensive type-safe enums for device control and status
+
+  - Status value enums: ``OnOffFlag``, ``Operation``, ``DhwOperationSetting``, ``CurrentOperationMode``, ``HeatSource``, ``DREvent``, ``WaterLevel``, ``FilterChange``, ``RecirculationMode``
+  - Time of Use enums: ``TouWeekType``, ``TouRateType``
+  - Device capability enums: ``CapabilityFlag``, ``TemperatureType``, ``DeviceType``
+  - Device control command enum: ``CommandCode`` (all MQTT command codes)
+  - Error code enum: ``ErrorCode`` with complete error code mappings
+  - Human-readable text mappings for all enums (e.g., ``DHW_OPERATION_SETTING_TEXT``, ``ERROR_CODE_TEXT``)
+  - Exported from main package: ``from nwp500 import OnOffFlag, ErrorCode, CommandCode``
+  - Comprehensive documentation in ``docs/enumerations.rst``
+  - Example usage in ``examples/error_code_demo.py``
+
+Changed
+-------
+
+- **Command Code Constants**: Migrated from ``constants.py`` to ``CommandCode`` enum in ``enums.py``
+
+  - ``ANTI_LEGIONELLA_ENABLE`` → ``CommandCode.ANTI_LEGIONELLA_ON``
+  - ``ANTI_LEGIONELLA_DISABLE`` → ``CommandCode.ANTI_LEGIONELLA_OFF``
+  - ``TOU_ENABLE`` → ``CommandCode.TOU_ON``
+  - ``TOU_DISABLE`` → ``CommandCode.TOU_OFF``
+  - ``TOU_SETTINGS`` → ``CommandCode.TOU_RESERVATION``
+  - All command constants now use consistent naming in ``CommandCode`` enum
+
+- **Model Enumerations**: Updated type annotations for clarity and type safety
+
+  - ``TemperatureUnit`` → ``TemperatureType`` (matches device protocol field names)
+  - All capability flags (e.g., ``power_use``, ``dhw_use``) now use ``CapabilityFlag`` type
+  - ``MqttRequest.device_type`` now accepts ``Union[DeviceType, int]`` for flexibility
+
+- **Model Serialization**: Enums automatically serialize to human-readable names
+
+  - `model_dump()` converts enums to names (e.g., `DhwOperationSetting.HEAT_PUMP` → `"HEAT_PUMP"`)
+  - CLI and other consumers benefit from automatic enum name serialization
+  - Text mappings available for custom formatting (e.g., `DHW_OPERATION_TEXT[enum]` → "Heat Pump Only")
+
+- **Documentation**: Comprehensive updates across protocol and API documentation
+
+  - ``docs/guides/time_of_use.rst``: Clarified TOU override status behavior (1=OFF/override active, 2=ON/normal operation)
+  - ``docs/protocol/data_conversions.rst``: Updated TOU field descriptions with correct enum values
+  - ``docs/protocol/device_features.rst``: Added capability flag pattern explanation (2=supported, 1=not supported)
+  - ``docs/protocol/mqtt_protocol.rst``: Updated command code references to use new enum names
+  - ``docs/python_api/models.rst``: Updated model field type annotations
+
+- **Examples**: Updated to use new enums for type-safe device control
+
+  - ``examples/anti_legionella_example.py``: Uses ``CommandCode`` enum
+  - ``examples/device_feature_callback.py``: Uses capability enums
+  - ``examples/event_emitter_demo.py``: Uses status enums
+  - ``examples/mqtt_diagnostics_example.py``: Uses command enums
+
+- **CLI Code Cleanup**: Refactored JSON formatting to use shared utility function
+
+  - Extracted repeated `json.dumps()` calls to `format_json_output()` helper
+  - Cleaner code with consistent formatting across all commands
+
+Fixed
+-----
+
+- **Temperature Conversion Test**: Corrected ``test_device_status_div10`` to use ``HalfCelsiusToF`` conversion (100 → 122°F, not 50.0)
+- **Documentation**: Fixed references to non-existent ``OperationMode`` enum - replaced with correct ``DhwOperationSetting`` and ``CurrentOperationMode`` enums
+
 Version 6.1.1 (2025-12-08)
 ==========================
 
@@ -238,7 +320,7 @@ Quick Example
 
    # OLD boolean and enum handling
    is_heating = converted["currentHeatUse"] == 2
-   mode = CurrentOperationMode(converted["operationMode"]) if converted["operationMode"] in (0,32,64,96) else CurrentOperationMode.STANDBY
+   mode = OperationMode(converted["operationMode"]) if converted["operationMode"] in (0,32,64,96) else OperationMode.STANDBY
 
    # NEW simplified
    is_heating = status.current_heat_use

docs/enumerations.rst

@@ -0,0 +1,293 @@
+Enumerations Reference
+======================
+
+This document provides a comprehensive reference for all enumerations used in
+the Navien NWP500 protocol.
+
+Device Control Commands
+-----------------------
+
+.. autoclass:: nwp500.enums.CommandCode
+   :members:
+   :undoc-members:
+
+These command IDs are used in MQTT control messages to change device settings
+and trigger actions. The most commonly used commands include:
+
+- **Power Control**: ``POWER_ON``, ``POWER_OFF``
+- **Temperature**: ``DHW_TEMPERATURE``
+- **Operation Mode**: ``DHW_MODE``
+- **TOU**: ``TOU_ON``, ``TOU_OFF``
+- **Maintenance**: ``AIR_FILTER_RESET``, ``ANTI_LEGIONELLA_ON``
+
+Example usage::
+
+    from nwp500 import CommandCode
+
+    # Send temperature command
+    command = CommandCode.DHW_TEMPERATURE
+    params = [120]  # 60°C in half-degree units
+
+Status Value Enumerations
+--------------------------
+
+OnOffFlag
+~~~~~~~~~
+
+.. autoclass:: nwp500.enums.OnOffFlag
+   :members:
+   :undoc-members:
+
+Generic on/off flag used throughout status fields for power status, TOU status,
+recirculation status, vacation mode, anti-legionella, and other boolean settings.
+
+**Note**: Device uses ``1=OFF, 2=ON`` (not standard 0/1 boolean).
+
+Operation
+~~~~~~~~~
+
+.. autoclass:: nwp500.enums.Operation
+   :members:
+   :undoc-members:
+
+Device operation state indicating overall device activity.
+
+DhwOperationSetting
+~~~~~~~~~~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.DhwOperationSetting
+   :members:
+   :undoc-members:
+
+User-configured DHW heating mode preference. This determines which heat source(s)
+the device will use when heating is needed:
+
+- **HEAT_PUMP**: Most efficient but slower heating
+- **ELECTRIC**: Fastest but uses most energy
+- **ENERGY_SAVER**: Hybrid mode - balanced efficiency
+- **HIGH_DEMAND**: Hybrid mode - maximum heating capacity
+- **VACATION**: Energy-saving mode for extended absences
+- **POWER_OFF**: Device powered off
+
+Example::
+
+    from nwp500 import DhwOperationSetting
+    from nwp500.enums import DHW_OPERATION_SETTING_TEXT
+
+    mode = DhwOperationSetting.ENERGY_SAVER
+    print(f"Current mode: {DHW_OPERATION_SETTING_TEXT[mode]}")  # "Hybrid: Efficiency"
+
+CurrentOperationMode
+~~~~~~~~~~~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.CurrentOperationMode
+   :members:
+   :undoc-members:
+
+Real-time operational state (read-only). This reflects what the device is actually
+doing right now, which may differ from the configured mode setting:
+
+- **STANDBY**: Device idle, not actively heating
+- **HEAT_PUMP_MODE**: Heat pump actively running
+- **HYBRID_EFFICIENCY_MODE**: Actively heating in Energy Saver mode
+- **HYBRID_BOOST_MODE**: Actively heating in High Demand mode
+
+Example::
+
+    from nwp500 import CurrentOperationMode
+    from nwp500.enums import CURRENT_OPERATION_MODE_TEXT
+
+    mode = CurrentOperationMode.HEAT_PUMP_MODE
+    print(f"Device state: {CURRENT_OPERATION_MODE_TEXT[mode]}")  # "Heat Pump"
+
+HeatSource
+~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.HeatSource
+   :members:
+   :undoc-members:
+
+Currently active heat source (read-only status). This reflects what the device
+is *currently* using, not what mode it's set to. In Hybrid mode, this field
+shows which heat source(s) are active at any moment.
+
+DREvent
+~~~~~~~
+
+.. autoclass:: nwp500.enums.DREvent
+   :members:
+   :undoc-members:
+
+Demand Response event status. Allows utilities to manage grid load by signaling
+water heaters to reduce consumption (shed) or pre-heat (load up) before peak periods.
+
+WaterLevel
+~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.WaterLevel
+   :members:
+   :undoc-members:
+
+Hot water level indicator displayed as gauge in app. IDs are non-sequential,
+likely represent bit positions for multi-level displays.
+
+FilterChange
+~~~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.FilterChange
+   :members:
+   :undoc-members:
+
+Air filter status for heat pump models. Indicates when air filter maintenance
+is needed.
+
+RecirculationMode
+~~~~~~~~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.RecirculationMode
+   :members:
+   :undoc-members:
+
+Recirculation pump operation mode:
+
+- **ALWAYS**: Pump continuously runs
+- **BUTTON**: Manual activation only (hot button)
+- **SCHEDULE**: Runs on configured schedule
+- **TEMPERATURE**: Activates when pipe temp drops below setpoint
+
+Time of Use (TOU) Enumerations
+-------------------------------
+
+TouWeekType
+~~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.TouWeekType
+   :members:
+   :undoc-members:
+
+Day grouping for TOU schedules. Allows separate schedules for weekdays and
+weekends to account for different electricity rates and usage patterns.
+
+TouRateType
+~~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.TouRateType
+   :members:
+   :undoc-members:
+
+Electricity rate period type. Device behavior can be configured for each period:
+
+- **OFF_PEAK**: Lowest rates - device heats aggressively
+- **MID_PEAK**: Medium rates - device heats normally
+- **ON_PEAK**: Highest rates - device minimizes heating
+
+Temperature and Unit Enumerations
+----------------------------------
+
+TemperatureType
+~~~~~~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.TemperatureType
+   :members:
+   :undoc-members:
+
+Temperature display unit preference (Celsius or Fahrenheit).
+
+**Alias**: ``TemperatureUnit`` in models.py for backward compatibility.
+
+TempFormulaType
+~~~~~~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.TempFormulaType
+   :members:
+   :undoc-members:
+
+Temperature conversion formula type. Different device models use slightly different
+rounding algorithms when converting internal Celsius values to Fahrenheit:
+
+- **ASYMMETRIC** (Type 0): Special rounding based on raw value remainder
+- **STANDARD** (Type 1): Simple round to nearest integer
+
+This ensures the mobile app matches the device's built-in display exactly.
+
+Device Type Enumerations
+-------------------------
+
+UnitType
+~~~~~~~~
+
+.. autoclass:: nwp500.enums.UnitType
+   :members:
+   :undoc-members:
+
+Navien device/unit model types. Common values:
+
+- **NPF** (513): Heat pump water heater (primary model for this library)
+- **NPE**: Tankless water heater
+- **NCB**: Condensing boiler
+- **NPN**: Condensing water heater
+
+Values with ``CAS_`` prefix indicate cascading systems where multiple units
+work together.
+
+DeviceType
+~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.DeviceType
+   :members:
+   :undoc-members:
+
+Communication device type (WiFi module model).
+
+FirmwareType
+~~~~~~~~~~~~
+
+.. autoclass:: nwp500.enums.FirmwareType
+   :members:
+   :undoc-members:
+
+Firmware component types. Devices may have multiple firmware components that
+can be updated independently.
+
+Display Text Helpers
+--------------------
+
+The enums module also provides dictionaries for converting enum values to
+user-friendly display text:
+
+.. code-block:: python
+
+   from nwp500.enums import (
+       DHW_OPERATION_SETTING_TEXT,
+       CURRENT_OPERATION_MODE_TEXT,
+       HEAT_SOURCE_TEXT,
+       DR_EVENT_TEXT,
+       RECIRC_MODE_TEXT,
+       TOU_RATE_TEXT,
+       FILTER_STATUS_TEXT,
+       ERROR_CODE_TEXT,
+   )
+
+   # Usage examples
+   from nwp500 import DhwOperationSetting, CurrentOperationMode, ErrorCode
+
+   # User-configured mode
+   mode = DhwOperationSetting.ENERGY_SAVER
+   print(DHW_OPERATION_SETTING_TEXT[mode])  # "Hybrid: Efficiency"
+
+   # Current operational state
+   state = CurrentOperationMode.HEAT_PUMP_MODE
+   print(CURRENT_OPERATION_MODE_TEXT[state])  # "Heat Pump"
+
+   # Error codes
+   error = ErrorCode.E407_DHW_TEMP_SENSOR
+   print(ERROR_CODE_TEXT[error])  # "Abnormal DHW Temperature Sensor"
+
+Related Documentation
+---------------------
+
+For detailed protocol documentation, see:
+
+- :doc:`protocol/device_status` - Status field definitions
+- :doc:`guides/time_of_use` - TOU scheduling and rate types
+- :doc:`protocol/control_commands` - Control command usage