"""Canonical impl contracts stay reachable without duplicated skill bodies."""
import re
import unittest
from pathlib import Path
from harness.tests._support.contracts import read_contract, REQUIRED
from harness.tests._support.paths import ROOT

class ImplArchitectureDocsTests(unittest.TestCase):

    def test_skills_require_single_detailed_workflow_source(self):
        for name in ('gitea-issue-implementation', 'gitea-issue-rework'):
            path = ROOT / 'harness/agents/impl/skills' / name / 'SKILL.md'
            text = path.read_text()
            reference = path.parent / 'references/workflow.md'
            with self.subTest(skill=name):
                self.assertIn(REQUIRED, text)
                self.assertLess(len(text.splitlines()), 100)
                self.assertEqual(text.count('name: ' + name), 1)
                self.assertNotIn('## Managed-lock broker gate', text)
                self.assertFalse(reference.read_text().startswith('---'))
                contract = read_contract(path)
                self.assertEqual(contract.count('## Managed-lock broker gate'), 1)
                for gate in ('## Delegation evidence acceptance gate', '## Test inventory source-binding gate', '## Canonical external verification evidence'):
                    self.assertEqual(contract.count(gate), 1)

    def test_all_canonical_impl_markdown_links_resolve(self):
        for name in ('gitea-issue-implementation', 'gitea-issue-rework'):
            directory = ROOT / 'harness/agents/impl/skills' / name
            for path in [directory / 'SKILL.md', directory / 'references/workflow.md']:
                for link in re.findall('\\[[^\\]]+\\]\\(([^)]+)\\)', path.read_text()):
                    if link.startswith(('https://', 'http://', '#')):
                        continue
                    target = link.split('#', 1)[0]
                    with self.subTest(path=path.name, link=link):
                        self.assertTrue((path.parent / target).resolve().exists())

    def test_correction_default_and_exception_remain_distinct(self):
        text = (ROOT / 'harness/agents/impl/skills/gitea-issue-rework/references/readback.md').read_text()
        for token in ('atomic_client_precondition=false',):
            self.assertIn(token.lower(), text.lower())