"""Guard replication-03 identity, unchanged reused briefs and replication-02 bytes."""
from pathlib import Path
import shutil
import sys

import pytest

ROOT = Path(__file__).resolve().parents[1]
sys.path.insert(0, str(ROOT / 'scripts'))
import language_replication as base
import language_replication_03 as replication


@pytest.fixture
def packet(tmp_path):
    shutil.copytree(ROOT / 'reference', tmp_path / 'reference')
    (tmp_path / '.git').symlink_to(ROOT / '.git', target_is_directory=True)
    for name in base.INPUTS:
        target = tmp_path / replication.PACKET / name
        target.parent.mkdir(parents=True, exist_ok=True)
        shutil.copy(ROOT / replication.PACKET / name, target)
    for relative in (replication.SOURCE / 'scenarios.json', Path('research/evaluations/language-pilot-01/scenarios.json')):
        (tmp_path / relative).parent.mkdir(parents=True, exist_ok=True)
        shutil.copy(ROOT / relative, tmp_path / relative)
    for relative in replication.DEPENDENCIES:
        (tmp_path / relative).parent.mkdir(parents=True, exist_ok=True)
        shutil.copy(ROOT / relative, tmp_path / relative)
    replication.prepare(tmp_path)
    return tmp_path


def test_freeze_has_own_identity_and_no_scoring_material_in_prompts(packet):
    frozen, assignments, scenarios = replication.check(packet)
    assert frozen['packet'] == 'language-replication-03' and len(assignments) == 12
    assert str(replication.SOURCE / 'scenarios.json') in frozen['files']
    for assignment in assignments:
        text = (packet / replication.PACKET / 'requests' / (assignment['run'] + '.txt')).read_text()
        assert 'qualifies' not in text and 'reviewer_context' not in text and '"criteria"' not in text
    with pytest.raises(ValueError, match='already frozen'):
        replication.prepare(packet)


def test_changed_reused_brief_is_rejected(packet):
    scenarios = base.read(packet / replication.PACKET / 'scenarios.json')
    scenarios[0]['brief'] += ' Changed.'
    with pytest.raises(ValueError, match='Reused brief'):
        replication.scenarios_check(scenarios, packet)


def test_missing_criterion_examples_are_rejected(packet):
    scenarios = base.read(packet / replication.PACKET / 'scenarios.json')
    scenarios[0]['criteria'][0]['qualifies'] = []
    with pytest.raises(ValueError, match='examples required'):
        replication.scenarios_check(scenarios, packet)


def test_replication_02_freeze_still_verifies():
    base.PACKET, base.DEPENDENCIES = replication.SOURCE, replication.DEPENDENCIES[:-1]
    frozen, _, _ = base.check(ROOT)
    assert frozen['packet'] == 'language-replication-02'