feat: add latest_meter_reading_date sensor

[GuyKh]

Type

enhancement

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Description

• Added a new sensor elec_latest_meter_reading_date in sensor.py to track the date of the latest meter reading.
• Included English and Hebrew translations for the new sensor in en.json and he.json.

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Changes walkthrough

Relevant files

Enhancement

sensor.py Add latest meter reading date sensor                                          custom_components/iec/sensor.py Added a new sensor for elec_latest_meter_reading_date to track the latest meter reading date. +6/-0      en.json Add English translation for latest meter reading date        custom_components/iec/translations/en.json Added English translation for the new elec_latest_meter_reading_date sensor. +3/-0      he.json Add Hebrew translation for latest meter reading date          custom_components/iec/translations/he.json Added Hebrew translation for the new elec_latest_meter_reading_date sensor. +3/-0

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[what-the-diff]

PR Summary

• New Feature Addition to the Sensor System
  A fresh entity named elec_latest_meter_reading_date has been introduced. This will allow users to access the latest meter reading date directly through the sensor.

• Language Support Increased
  To ensure inclusivity and ease of use for non-English speakers, translations for elec_latest_meter_reading_date have been made available in both English and Hebrew. This will facilitate a wider audience to effectively use this new feature.

[qodo-code-review]

PR Description updated to latest commit (bdb1099)

• Copy walkthrough table to "Files Changed" Tab

[qodo-code-review]

PR Review

⏱️ Estimated effort to review [1-5]	2, because the changes are straightforward and localized to specific files, involving the addition of a new sensor and its translations. The logic is simple and the modifications are minimal.
🧪 Relevant tests	No
🔍 Possible issues	Possible Bug: In the Hebrew translation file (he.json), the key for the new sensor translation is duplicated as "elec_latest_meter_reading". This should be "elec_latest_meter_reading_date" to match the English version and the sensor's key.
🔒 Security concerns	No

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[qodo-code-review]

PR Code Suggestions

Category	Suggestions
Bug	Replace the default integer return value with None for the date sensor when data is unavailable. The value_fn lambda for the elec_latest_meter_reading_date sensor incorrectly returns an integer 0 when the desired attribute is not available. This is not suitable for a sensor with a device_class of DATE. Instead, it should return None to indicate the absence of a date. custom_components/iec/sensor.py [139] value_fn=lambda data: (data[FUTURE_CONSUMPTIONS_DICT_NAME][data[ATTRIBUTES_DICT_NAME][METER_ID_ATTR_NAME]] - .total_import_date or 0) if (data[FUTURE_CONSUMPTIONS_DICT_NAME]) else None + .total_import_date) if (data[FUTURE_CONSUMPTIONS_DICT_NAME]) else None
	Correct the translation key to match its unique identifier. The key for the Hebrew translation of "IEC latest meter reading date" is duplicated as "elec_latest_meter_reading", which is already used for another sensor. This should be corrected to a unique key, such as "elec_latest_meter_reading_date" to match the English translation file and avoid conflicts. custom_components/iec/translations/he.json [27-28] -"elec_latest_meter_reading": { +"elec_latest_meter_reading_date": { "name": "תאריך קריאת מונה אחרונה {multi_contract}" }

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