#!/usr/bin/env python3
"""Unsupported YAML must fail before any runtime call."""
import os, pathlib, subprocess, sys, tempfile
binary = str(pathlib.Path(sys.argv[1]).resolve())
with tempfile.TemporaryDirectory(prefix='container-compose-compat-', dir=os.environ.get('CONTAINER_COMPOSE_TEST_TMPDIR', '/Volumes/ChatGPT' if pathlib.Path('/Volumes/ChatGPT').is_dir() else tempfile.gettempdir())) as d:
    root = pathlib.Path(d)
    runtime = root/'container'
    runtime.write_text('#!/bin/sh\necho called >> "$CALLS"\nexit 99\n')
    runtime.chmod(0o755)
    calls=root/'calls'; source=root/'compose.yaml'
    env=dict(os.environ, PATH=str(root)+':'+os.environ['PATH'], CALLS=str(calls))
    fixtures = [
        'secrets: {}\nservices:\n  web:\n    image: nginx\n',
        'volumes:\n  data:\n    external: true\nservices:\n  web:\n    image: nginx\n',
        'networks:\n  lan:\n    driver: overlay\nservices:\n  web:\n    image: nginx\n',
        'services:\n  web:\n    image: nginx\n    ports: [{target: 80, published: 8080}]\n',
        'services:\n  web:\n    image: nginx\n    volumes: [{type: bind, source: ., target: /app}]\n',
        'services:\n  web:\n    image: nginx\n    networks:\n      lan:\n        aliases: [web]\n',
        'services:\n  web:\n    image: nginx\n    depends_on:\n      db:\n        condition: service_healthy\n  db:\n    image: postgres\n',
        'services:\n  web:\n    build:\n      context: .\n      target: production\n',
        'services:\n  web:\n    image: nginx\n    profiles: [dev]\n',
        'services:\n  web:\n    image: nginx\n    deploy: {replicas: 3}\n',
    ]
    for fixture in fixtures:
        source.write_text(fixture)
        result=subprocess.run([binary,'-f',str(source),'up','-d'],env=env,capture_output=True,timeout=5)
        assert result.returncode != 0, result.stdout
        assert not calls.exists(), 'Unexpected runtime mutation'
    source.write_text('services:\n  web:\n    image: nginx\n')
    for command in [['down','--bogus'],['logs','--follow'],['stop','unknown']]:
        result=subprocess.run([binary,'-f',str(source)]+command,env=env,capture_output=True,timeout=5)
        assert result.returncode != 0
        assert not calls.exists()
    result=subprocess.run([binary,'monitor','--demo','start','demo-web-1'],env=env,capture_output=True,timeout=5)
    assert result.returncode != 0 and not calls.exists()
    print('PASS: 14 compatibility and read-only demo checks')