# -*- coding: utf-8 -*-
"""Tests for `vibe.joblocate` -- picking a job's knowledge.yaml with no doc.

Loaded the ordinary way `conftest.py` makes possible (the module has no
Revit import at all, so a plain `from vibe import joblocate` just works).
Every env var is passed explicitly through `env={...}` rather than touched
on the real process environment, so these never depend on, or leak into,
whatever WILLTOOLS_JOBS happens to be set to on the machine running them.
"""
from vibe import joblocate as JL


def _mk_job(tmp_path, name, text=u'job:\n  plant: x\n'):
    folder = tmp_path / name
    folder.mkdir()
    (folder / 'knowledge.yaml').write_text(text, encoding='utf-8')
    return folder


# ---------------------------------------------------------------- job_candidates

def test_job_candidates_finds_every_folder_with_a_knowledge_file(tmp_path):
    _mk_job(tmp_path, 'alpha')
    _mk_job(tmp_path, 'beta')
    (tmp_path / 'not_a_job.txt').write_text('x', encoding='utf-8')
    found = JL.job_candidates(str(tmp_path))
    assert len(found) == 2
    assert all(f.endswith('knowledge.yaml') for f in found)


def test_job_candidates_ignores_a_folder_with_no_knowledge_yaml(tmp_path):
    (tmp_path / 'empty_job').mkdir()
    assert JL.job_candidates(str(tmp_path)) == []


def test_job_candidates_ignores_files_at_the_top_level(tmp_path):
    (tmp_path / 'knowledge.yaml').write_text('x', encoding='utf-8')
    assert JL.job_candidates(str(tmp_path)) == []


def test_job_candidates_on_a_root_that_does_not_exist_is_empty(tmp_path):
    assert JL.job_candidates(str(tmp_path / 'nope')) == []


def test_job_candidates_on_no_root_at_all_is_empty():
    assert JL.job_candidates(None) == []
    assert JL.job_candidates('') == []


# --------------------------------------------------------- resolve_job_knowledge

def test_explicit_wins_over_everything_else(tmp_path):
    _mk_job(tmp_path, 'alpha')
    _mk_job(tmp_path, 'beta')
    result = JL.resolve_job_knowledge(explicit='some/file.yaml',
                                      jobs_root=str(tmp_path))
    assert result.path == 'some/file.yaml'
    assert result.how == 'explicit'
    assert bool(result) is True


def test_no_root_configured_is_not_blocking():
    """The ordinary state of a machine with no WILLTOOLS_JOBS at all -- a
    caller may fall back to DEFAULTS without treating this as an error."""
    result = JL.resolve_job_knowledge(jobs_root=None, env={})
    assert result.path is None
    assert result.blocking is False
    assert 'WILLTOOLS_JOBS' in result.reason


def test_a_root_that_is_not_a_folder_is_blocking(tmp_path):
    not_a_dir = tmp_path / 'not_a_dir.txt'
    not_a_dir.write_text('x', encoding='utf-8')
    result = JL.resolve_job_knowledge(jobs_root=str(not_a_dir))
    assert result.path is None
    assert result.blocking is True
    assert str(not_a_dir) in result.reason


def test_a_single_job_folder_is_used_with_no_further_input(tmp_path):
    job = _mk_job(tmp_path, 'sample_job')
    result = JL.resolve_job_knowledge(jobs_root=str(tmp_path))
    assert result.path == str(job / 'knowledge.yaml')
    assert result.how == 'single'
    assert result.blocking is False


def test_an_empty_jobs_root_is_not_blocking(tmp_path):
    """Nothing under it yet -- a fresh install, not a misconfiguration."""
    result = JL.resolve_job_knowledge(jobs_root=str(tmp_path))
    assert result.path is None
    assert result.blocking is False
    assert str(tmp_path) in result.reason


def test_several_job_folders_with_none_named_refuses_and_lists_them(tmp_path):
    """The exact ruling this module exists to enforce: guessing among several
    real job folders is a worse failure than asking, so this is BLOCKING."""
    _mk_job(tmp_path, 'sample_job')
    _mk_job(tmp_path, 'Horizon')
    _mk_job(tmp_path, 'sample_job_detached')
    result = JL.resolve_job_knowledge(jobs_root=str(tmp_path))
    assert result.path is None
    assert result.blocking is True
    assert result.reason is not None
    assert 'sample_job' in result.reason
    assert 'Horizon' in result.reason
    assert 'sample_job_detached' in result.reason
    assert len(result.candidates) == 3
    assert '--job' in result.reason


def test_a_named_job_picks_one_of_several(tmp_path):
    _mk_job(tmp_path, 'sample_job')
    horizon = _mk_job(tmp_path, 'Horizon')
    result = JL.resolve_job_knowledge(jobs_root=str(tmp_path),
                                      job_name='Horizon')
    assert result.path == str(horizon / 'knowledge.yaml')
    assert result.how == 'named'
    assert result.blocking is False


def test_a_named_job_that_does_not_exist_is_blocking_and_lists_real_ones(
        tmp_path):
    _mk_job(tmp_path, 'sample_job')
    _mk_job(tmp_path, 'Horizon')
    result = JL.resolve_job_knowledge(jobs_root=str(tmp_path),
                                      job_name='NoSuchJob')
    assert result.path is None
    assert result.blocking is True
    assert 'NoSuchJob' in result.reason
    assert 'sample_job' in result.reason
    assert 'Horizon' in result.reason


def test_env_supplies_the_root_when_jobs_root_is_not_given(tmp_path):
    job = _mk_job(tmp_path, 'only-one')
    result = JL.resolve_job_knowledge(env={JL.JOBS_ENV: str(tmp_path)})
    assert result.path == str(job / 'knowledge.yaml')


def test_explicit_bypasses_env_entirely(tmp_path):
    _mk_job(tmp_path, 'alpha')
    _mk_job(tmp_path, 'beta')
    result = JL.resolve_job_knowledge(explicit='chosen.yaml',
                                      env={JL.JOBS_ENV: str(tmp_path)})
    assert result.path == 'chosen.yaml'
    assert result.how == 'explicit'


def test_result_is_falsy_when_nothing_was_found():
    result = JL.resolve_job_knowledge(jobs_root=None, env={})
    assert not result
    assert bool(result) is False