import json
import os
from pathlib import Path
import subprocess
import xml.etree.ElementTree as ET
import yaml

paths = subprocess.check_output(['git', 'ls-files', '-z']).decode('utf-8').split('\0')
paths = [Path(name) for name in paths if name]
if not paths:
    raise SystemExit('No tracked policy files')
names = {'LICENSE', 'NOTICE', 'COPYING', 'CODEOWNERS', '.gitignore', '.gitattributes',
         '.editorconfig', 'mvnw', 'mvnw.cmd'}
shell_checks = os.environ.get('QQQ_POLICY_SHELL') == 'true'
suffixes = {'.md', '.rst', '.txt', '.adoc', '.yml', '.yaml', '.json', '.properties'}
manifests = {'pom.xml', 'package.json', 'cargo.toml', 'pyproject.toml', 'go.mod',
             'build.gradle', 'build.gradle.kts', 'settings.gradle', 'settings.gradle.kts'}
for path in paths:
    if path.is_symlink() or path.name.lower() in manifests:
        raise SystemExit(f'Application or symlink requires a build profile: {path}')
    if path.as_posix() == '.mvn/wrapper/maven-wrapper.jar':
        continue
    if path.as_posix() == 'checkstyle/config.xml':
        ET.fromstring(path.read_text(encoding='utf-8'))
        continue
    if shell_checks and path.suffix.lower() == '.sh':
        subprocess.run(['bash', '-n', '--', str(path)], check=True)
        subprocess.run(['shellcheck', '--severity=warning', '--', str(path)], check=True)
        continue
    if shell_checks and path.suffix.lower() == '.mmd':
        path.read_text(encoding='utf-8')
        continue
    if path.name not in names and path.suffix.lower() not in suffixes:
        raise SystemExit(f'Unsupported policy file; select a build profile: {path}')
    text = path.read_text(encoding='utf-8')
    if path.suffix.lower() in ('.yml', '.yaml'):
        list(yaml.safe_load_all(text))
    elif path.suffix.lower() == '.json':
        json.loads(text)
print(f'Validated {len(paths)} tracked policy/documentation files; no application build or publication')