Estonia

[thiagovmdon]

Summary

Related to issue #74

This PR updates the Estonia fetcher to better match the upstream hydrodownloadR approach while keeping the additional metadata we want in RivRetrieve.

What changed

• rebased estonia onto the current main
• replaced the old EstModel + WISKI fuzzy metadata merge with an official EstModel JSON + GeoJSON merge by gauge_id
• kept the extra area-related metadata fields from the Estonia station payload
• regenerated the cached Estonia metadata CSV from the live official source
• added Estonia unit tests with real raw payloads in tests/test_data/
• added an Estonia example script in examples/
• tightened the Estonia fetcher docstring so the rendered Sphinx page matches the Germany Berlin structure:
  • Data source
  • Supported variables
  • Data description and API
  • Terms of use
  • detailed get_data() method docs with Parameters, Returns, Return type, and Raises
• added pytest discovery config so pytest runs the real tests/ suite instead of collecting examples/test_*.py demo scripts as tests

Implementation notes

The main design change is in metadata handling.

Before:

• metadata came from EstModel plus a separate WISKI endpoint
• coordinates were attached via fuzzy station-name matching

Now:

• metadata comes from EstModel station JSON
• coordinates come from EstModel GeoJSON
• the two are merged directly by station code / gauge ID

This is closer to hydrodownloadR, simpler, and less brittle, while still preserving the useful area, overlapArea, countryArea, calculationArea, and distance fields.

Result

• get_metadata() and get_cached_metadata() now agree structurally
• the Estonia cache now reflects the current live official hydrological station list
• the rendered Estonia API page is much cleaner and follows the requested documentation structure

Verification

• ./.venv/bin/python -m pytest
• ./.venv/bin/python -m ruff check .
• ./.venv/bin/python -m ruff format --check .
• ./.venv/bin/python -m sphinx -M html docs docs/_build -j auto

Reference

This PR was implemented on top of the rebased estonia branch and pushed after validation.
Latest commit: d818a2b