#!/usr/bin/env python3
"""Run the exact shared route suite on the pinned disposable Forgejo image."""
import argparse
import base64
import hashlib
import importlib.util
import json
from pathlib import Path
import uuid

HERE = Path(__file__).parent


def load(name, filename):
    spec = importlib.util.spec_from_file_location(name, HERE / filename)
    module = importlib.util.module_from_spec(spec); spec.loader.exec_module(module)
    return module


base = load('lifecycle', 'verify_forge_lifecycle.py')
routes = load('routes', 'accept_forge_routes.py')
LOADED_ROUTES_SHA256 = hashlib.sha256((HERE / 'accept_forge_routes.py').read_bytes()).hexdigest()


class FixtureReady(Exception):
    pass


class SetupProbe(base.Probe):
    def check(self, name, condition):
        super().check(name, condition)
        if name == 'native_repository_created':
            raise FixtureReady()


class Backend:
    user = 'probe'
    origin = 'http://127.0.0.1:3000'
    scope = 'Exact shared HTTP/API suite on pinned isolated Forgejo, SQLite, no external network; no live credential or deployed acceptance.'

    def __init__(self, probe):
        self.p = probe
        self.directory = base.ROOT + '/routes-client'
        probe.execute('mkdir', self.directory)

    def api(self, method, path, data=None, authenticated=True):
        return self.p.api(method, path, data, authenticated)

    def git(self, *args, allow_failure=False):
        auth = base64.b64encode(('probe:' + self.p.password).encode()).decode()
        return self.p.execute('env', 'GIT_CONFIG_COUNT=1',
                              'GIT_CONFIG_KEY_0=http.http://127.0.0.1:3000/.extraHeader',
                              'GIT_CONFIG_VALUE_0=Authorization: Basic ' + auth,
                              'git', '-C', self.directory, *args,
                              allowed=(0, 1, 128) if allow_failure else (0,), timeout=120)

    def put(self, name, content):
        self.p.put(self.directory + '/' + name, content)

    def fixture(self):
        return self.p.execute('cat', base.ROOT + '/synthetic-key').stdout

    def profile(self, name):
        path = self.p.profile(name)
        digest = self.p.execute('sha256sum', path).stdout.decode().split()[0]
        mode = self.p.execute('stat', '-c', '%a %u %g', path).stdout.decode().strip()
        self.p.evidence['inherited_hook_mode_owner'] = mode
        if digest != routes.PROFILE['hook_sha256'] or mode not in ('555 1000 1000', '755 1000 1000'):
            raise ValueError('inherited-profile-mismatch')

    def absent_object(self, name, oid):
        root = base.REPOS + '/' + name + '.git'
        raw = self.p.execute('git', '--git-dir=' + root, 'cat-file', '--batch-check',
                             payload=(oid + '\n').encode()).stdout.decode().strip()
        if raw != oid + ' missing':
            raise ValueError('quarantine-retained')


def main():
    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument('--artifact-dir', type=Path, required=True)
    parser.add_argument('--receipt', type=Path, required=True)
    args = parser.parse_args()
    if args.receipt.exists():
        raise SystemExit('Retain prior attempt; use a new receipt.')
    probe = SetupProbe(args.receipt.with_suffix('.baseline.json'))
    suite = None
    try:
        try:
            probe.run_probe(args.artifact_dir)
        except FixtureReady:
            pass
        probe.evidence['scope'] = 'Pinned-image fixture setup only; shared suite has its own acceptance receipt.'
        template = base.ROOT + '/template'
        probe.execute('mkdir', '-p', template + '/hooks/pre-receive.d')
        probe.put(template + '/hooks/pre-receive.d/10-custodian-secret-scan',
                  (HERE / 'receive-profile-hook').read_bytes(), '555')
        probe.execute('git', 'config', '--file', base.ROOT + '/git-home/.gitconfig', 'init.templateDir', template)
        probe.execute('ssh-keygen', '-q', '-t', 'rsa', '-b', '2048', '-N', '', '-f', base.ROOT + '/synthetic-key')
        probe.evidence['result'] = 'fixture-ready'
        suite = routes.Suite(Backend(probe), args.receipt, 'custodian-routes-' + uuid.uuid4().hex[:24])
        suite.evidence['loaded_executor_sha256'] = LOADED_ROUTES_SHA256
        suite.run()
        suite.check('executor_unchanged_during_rehearsal', LOADED_ROUTES_SHA256 ==
                    hashlib.sha256((HERE / 'accept_forge_routes.py').read_bytes()).hexdigest())
    except Exception:
        if suite:
            suite.evidence['failure_phase'] = suite.phase
        raise SystemExit('Shared route acceptance incomplete; raw diagnostics suppressed.')
    finally:
        try:
            if suite:
                suite.close()
        finally:
            probe.close()
    print(json.dumps({'result': suite.evidence['result'], 'checks': len(suite.evidence['checks']),
                      'receipt': str(args.receipt)}))


if __name__ == '__main__':
    main()