From c7db8a0bee3c9f568a5c3ad1946c8ba69a2c8228 Mon Sep 17 00:00:00 2001
From: Joost Lekkerkerker <joostlek@outlook.com>
Date: Wed, 24 Jan 2024 08:23:39 +0100
Subject: [PATCH] Add translation placeholders for TPLink power strip (#108710)

---
 homeassistant/components/tplink/entity.py    |  2 +-
 homeassistant/components/tplink/sensor.py    | 21 ++++++++++++++------
 homeassistant/components/tplink/strings.json | 15 ++++++++++++++
 3 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/homeassistant/components/tplink/entity.py b/homeassistant/components/tplink/entity.py
index 577e1995d4a..987ac455ae1 100644
--- a/homeassistant/components/tplink/entity.py
+++ b/homeassistant/components/tplink/entity.py
@@ -40,7 +40,7 @@ class CoordinatedTPLinkEntity(CoordinatorEntity[TPLinkDataUpdateCoordinator]):
         """Initialize the switch."""
         super().__init__(coordinator)
         self.device: SmartDevice = device
-        self._attr_unique_id = self.device.device_id
+        self._attr_unique_id = device.device_id
         self._attr_device_info = DeviceInfo(
             connections={(dr.CONNECTION_NETWORK_MAC, device.mac)},
             identifiers={(DOMAIN, str(device.device_id))},
diff --git a/homeassistant/components/tplink/sensor.py b/homeassistant/components/tplink/sensor.py
index e5f7ae332ec..a3bb35840b2 100644
--- a/homeassistant/components/tplink/sensor.py
+++ b/homeassistant/components/tplink/sensor.py
@@ -108,11 +108,13 @@ def async_emeter_from_device(
 
 
 def _async_sensors_for_device(
-    device: SmartDevice, coordinator: TPLinkDataUpdateCoordinator
+    device: SmartDevice,
+    coordinator: TPLinkDataUpdateCoordinator,
+    has_parent: bool = False,
 ) -> list[SmartPlugSensor]:
     """Generate the sensors for the device."""
     return [
-        SmartPlugSensor(device, coordinator, description)
+        SmartPlugSensor(device, coordinator, description, has_parent)
         for description in ENERGY_SENSORS
         if async_emeter_from_device(device, description) is not None
     ]
@@ -136,7 +138,7 @@ async def async_setup_entry(
         # Historically we only add the children if the device is a strip
         for idx, child in enumerate(parent.children):
             entities.extend(
-                _async_sensors_for_device(child, children_coordinators[idx])
+                _async_sensors_for_device(child, children_coordinators[idx], True)
             )
     else:
         entities.extend(_async_sensors_for_device(parent, parent_coordinator))
@@ -154,13 +156,20 @@ class SmartPlugSensor(CoordinatedTPLinkEntity, SensorEntity):
         device: SmartDevice,
         coordinator: TPLinkDataUpdateCoordinator,
         description: TPLinkSensorEntityDescription,
+        has_parent: bool = False,
     ) -> None:
         """Initialize the switch."""
         super().__init__(device, coordinator)
         self.entity_description = description
-        self._attr_unique_id = (
-            f"{legacy_device_id(self.device)}_{self.entity_description.key}"
-        )
+        self._attr_unique_id = f"{legacy_device_id(device)}_{description.key}"
+        if has_parent:
+            assert device.alias
+            self._attr_translation_placeholders = {"device_name": device.alias}
+            if description.translation_key:
+                self._attr_translation_key = f"{description.translation_key}_child"
+            else:
+                assert description.device_class
+                self._attr_translation_key = f"{description.device_class.value}_child"
 
     @property
     def native_value(self) -> float | None:
diff --git a/homeassistant/components/tplink/strings.json b/homeassistant/components/tplink/strings.json
index 3c4711d1632..4aa4a3856bd 100644
--- a/homeassistant/components/tplink/strings.json
+++ b/homeassistant/components/tplink/strings.json
@@ -67,6 +67,21 @@
       },
       "today_consumption": {
         "name": "Today's consumption"
+      },
+      "current_consumption_child": {
+        "name": "{device_name} current consumption"
+      },
+      "total_consumption_child": {
+        "name": "{device_name} total consumption"
+      },
+      "today_consumption_child": {
+        "name": "{device_name} today's consumption"
+      },
+      "current_child": {
+        "name": "{device_name} current"
+      },
+      "voltage_child": {
+        "name": "{device_name} voltage"
       }
     },
     "switch": {