# -*- coding: utf-8 -*-
"""Which plant folder a job resolves to when nothing names one: the producer
on the model's Project Information, matched against each plant folder's
aliases. Host-testable half of `knowledge.detect_plant`."""
import io
import os

import pytest

from vibe import knowledge, plantpath


ALIASES = {'alpha': ['alpha', 'alpha precast', 'ap'],
           'bravo': ['bravo', 'bravo concrete']}


def test_exact_alias_resolves_case_insensitively():
    assert knowledge.match_plant('ALPHA', ALIASES)[0] == 'alpha'
    assert knowledge.match_plant('Bravo Concrete', ALIASES)[0] == 'bravo'


def test_alias_words_inside_a_longer_name_resolve():
    plant, why = knowledge.match_plant('Alpha Precast Co., Inc.', ALIASES)
    assert plant == 'alpha'
    assert 'alpha' in why


def test_whole_words_only():
    # 'ap' must not hide inside 'apex'.
    assert knowledge.match_plant('Apex Structures', ALIASES) == (
        None, knowledge.match_plant('Apex Structures', ALIASES)[1])
    assert knowledge.match_plant('Apex Structures', ALIASES)[0] is None


def test_no_producer_named_declines_with_a_reason():
    plant, why = knowledge.match_plant('', ALIASES)
    assert plant is None
    assert 'names no precast producer' in why
    assert knowledge.match_plant(None, ALIASES)[0] is None


def test_several_matches_decline_and_name_them():
    aliases = dict(ALIASES, charlie=['alpha'])
    plant, why = knowledge.match_plant('alpha', aliases)
    assert plant is None
    assert 'several' in why and 'alpha' in why and 'charlie' in why


def test_no_plant_folders_declines():
    plant, why = knowledge.match_plant('alpha', {})
    assert plant is None
    assert 'none of the plant folders' in why


def test_plant_ids_lists_folders_with_a_knowledge_file(tmp_path, monkeypatch):
    monkeypatch.setenv(plantpath.PLANT_ENV, str(tmp_path))
    for name in ('alpha', 'bravo'):
        (tmp_path / name).mkdir()
        (tmp_path / name / 'knowledge.yaml').write_text('plant:\n  id: %s\n' % name)
    (tmp_path / 'empty').mkdir()                      # no knowledge.yaml
    (tmp_path / 'knowledge.yaml').write_text('x: 1\n')  # the machine-wide FILE
    assert plantpath.plant_ids() == ['alpha', 'bravo']


def test_plant_ids_without_a_root_is_empty(tmp_path, monkeypatch):
    monkeypatch.setenv(plantpath.PLANT_ENV, str(tmp_path / 'nowhere'))
    assert plantpath.plant_ids() == []