Description

Pressing the Restablecer (Soft reset) button on the device throws an unhandled IndexError when consumptions_daily_sum is empty.

This happens in installs where Datadis hasn't returned consumption data yet — for example, when contracts lookup fails (contracts update failed or no contracts found in the provided account) and the user tries to recover by hitting Restablecer.

Setup

• Home Assistant Core: 2026.4.4
• HAOS: 17.2
• edata: 2025.11.3

Stack trace

File "/config/custom_components/edata/entity.py", line 78, in async_press
    await self._action()
File "/config/custom_components/edata/coordinator.py", line 754, in async_soft_reset
    if not await self.check_statistics_integrity():
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/config/custom_components/edata/coordinator.py", line 317, in check_statistics_integrity
    self._edata.data["consumptions_daily_sum"][0]["datetime"]
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^
IndexError: list index out of range

The UI surfaces this as the toast: No se pudo realizar la acción button/press. list index out of range.

Steps to reproduce

1. Install edata.
2. Configure Datadis credentials such that the account returns no contracts (e.g., NIF authorization not yet propagated).
3. Wait for the integration to log contracts update failed or no contracts found in the provided account.
4. Press the Restablecer button on the edata device.

Expected behavior

check_statistics_integrity() should handle the empty-list case gracefully (skip the integrity check, or return early with a meaningful log line) instead of raising IndexError. Bonus: the button itself could show a friendlier "no data to reset" message in the toast.

Suggested fix

Guard the access at coordinator.py:317:

daily_sum = self._edata.data.get("consumptions_daily_sum") or []
if not daily_sum:
    _LOGGER.warning("No consumption data yet; skipping integrity check")
    return True  # or False, depending on intended semantics
first_dt = daily_sum[0]["datetime"]

Notes

• This is independent from Simulation shows 0 € for 'Término de potencia' and 'Otros gastos' (energy term works) #319 (simulation showing 0 € for power and others terms) but the user can hit both in the same broken-install scenario.