from pathlib import Path
import hashlib
import json
import subprocess
import tempfile
import unittest

from validate_fleet_references import scan, validate


class FleetReferenceTests(unittest.TestCase):
    def setUp(self):
        self.tmp = tempfile.TemporaryDirectory()
        self.addCleanup(self.tmp.cleanup)
        self.root = Path(self.tmp.name)
        self.repo = self.root / 'example'
        self.repo.mkdir()
        subprocess.run(['git', 'init', '-q'], cwd=self.repo, check=True)
        self.legacy = 'identity' + '-canon'
        self.ledger = self.root / 'review.json'
        self.ledger.write_text(json.dumps({'repositories': ['example'], 'exceptions': []}))

    def test_tracked_ignored_and_hidden_files_are_scanned(self):
        (self.repo / '.gitignore').write_text('ignored.md\n')
        (self.repo / 'ignored.md').write_text(self.legacy)
        (self.repo / '.settings').write_text(self.legacy)
        (self.repo / 'source-link').symlink_to('../' + self.legacy)
        subprocess.run(['git', 'add', '-f', 'ignored.md'], cwd=self.repo, check=True)
        _, _, found = scan(self.root)
        self.assertEqual(set(found), {'example/ignored.md', 'example/.settings', 'example/source-link'})

    def test_new_live_reference_is_rejected(self):
        (self.repo / 'README.md').write_text('Source: ' + self.legacy)
        result = validate(self.root, self.ledger)
        self.assertEqual(result['result'], 'fail')
        self.assertEqual(result['errors'][0]['reason'], 'unreviewed reference')

    def test_review_is_bound_to_exact_reference_content(self):
        text = 'Historical source: ' + self.legacy
        (self.repo / 'README.md').write_text(text)
        data = {'repositories': ['example'], 'exceptions': [{'file': 'example/README.md',
                'reason': 'Historical source', 'line_sha256': [hashlib.sha256(text.encode()).hexdigest()]}]}
        self.ledger.write_text(json.dumps(data))
        self.assertEqual(validate(self.root, self.ledger)['result'], 'pass')
        (self.repo / 'README.md').write_text(text + '\nCurrent source: ' + self.legacy)
        self.assertEqual(validate(self.root, self.ledger)['result'], 'fail')


if __name__ == '__main__':
    unittest.main()