78 lines
2.2 KiB
Python
78 lines
2.2 KiB
Python
"""API for persistent storage for the frontend."""
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from functools import wraps
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import voluptuous as vol
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from homeassistant.components import websocket_api
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# mypy: allow-untyped-calls, allow-untyped-defs
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DATA_STORAGE = "frontend_storage"
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STORAGE_VERSION_USER_DATA = 1
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async def async_setup_frontend_storage(hass):
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"""Set up frontend storage."""
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hass.data[DATA_STORAGE] = ({}, {})
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hass.components.websocket_api.async_register_command(websocket_set_user_data)
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hass.components.websocket_api.async_register_command(websocket_get_user_data)
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def with_store(orig_func):
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"""Decorate function to provide data."""
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@wraps(orig_func)
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async def with_store_func(hass, connection, msg):
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"""Provide user specific data and store to function."""
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stores, data = hass.data[DATA_STORAGE]
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user_id = connection.user.id
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store = stores.get(user_id)
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if store is None:
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store = stores[user_id] = hass.helpers.storage.Store(
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STORAGE_VERSION_USER_DATA, f"frontend.user_data_{connection.user.id}"
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)
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if user_id not in data:
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data[user_id] = await store.async_load() or {}
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await orig_func(hass, connection, msg, store, data[user_id])
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return with_store_func
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@websocket_api.websocket_command(
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{
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vol.Required("type"): "frontend/set_user_data",
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vol.Required("key"): str,
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vol.Required("value"): vol.Any(bool, str, int, float, dict, list, None),
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}
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)
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@websocket_api.async_response
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@with_store
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async def websocket_set_user_data(hass, connection, msg, store, data):
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"""Handle set global data command.
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Async friendly.
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"""
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data[msg["key"]] = msg["value"]
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await store.async_save(data)
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connection.send_message(websocket_api.result_message(msg["id"]))
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@websocket_api.websocket_command(
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{vol.Required("type"): "frontend/get_user_data", vol.Optional("key"): str}
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)
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@websocket_api.async_response
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@with_store
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async def websocket_get_user_data(hass, connection, msg, store, data):
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"""Handle get global data command.
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Async friendly.
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"""
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connection.send_message(
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websocket_api.result_message(
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msg["id"], {"value": data.get(msg["key"]) if "key" in msg else data}
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)
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)
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