entrypoint

#!/usr/bin/env python3

# SPDX-FileCopyrightText: 2020 Pier Luigi Fiorini <pierluigi.fiorini@liri.io>
#
# SPDX-License-Identifier: MIT

from github import Github
from pathlib import Path

import os
import re
import shutil
import subprocess
import sys


def issue_message(what, message, filename=None, line=None, col=None):
    optional = []
    if filename:
        optional.append(f'file={filename}')
    if line:
        optional.append(f'line={line}')
    if col:
        optional.append(f'col={col}')
    if optional:
        middle = ' ' + ','.join(optional)
    else:
        middle = ''
    print(f'::{what}{middle}::{message}')


def error(message, **kwargs):
    # https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-error-message
    issue_message('error', message, **kwargs)


def find_qmllint():
    exe = shutil.which("/usr/lib/qt6/bin/qmllint")
    if exe is not None:
        return exe
    return None


def find_files(directory, pattern):
    for root, dirs, files in os.walk(directory):
        for basename in files:
            print(basename)
            if fnmatch.fnmatch(basename, pattern):
                filename = os.path.join(root, basename)
                print(filename)
                yield filename


def lint(filename, qmllint_bin):

    if qmllint_bin is None:
        raise SystemExit('Cannot find qmllint executable')

    result = subprocess.run([qmllint_bin, filename], capture_output=True)
    if result.returncode != 0:
        errmsg = result.stderr.decode().strip()
        match = re.match(r'.+:(\d+) : (.+)', errmsg)
        if match:
            col, msg = match.groups()
            error(msg, filename=filename, col=col)
        return False
    return True


def update_status(state, descr):
    g = Github(os.environ['GITHUB_TOKEN'])
    repo = g.get_repo(os.environ['GITHUB_REPOSITORY'])
    repo.get_commit(sha=os.environ['GITHUB_SHA']).create_status(
        state=state,
        target_url='https://github.com/liri-infra/qmllint-action',
        description=descr,
        context='status-check/qmllint'
    )


if __name__ == '__main__':
    os.chdir(os.environ['GITHUB_WORKSPACE'])

    # We don't update the status check from a workflow, the exit status is
    # enough since it's interpreted as a status check
    ci = os.environ.get('CI') is not None

    failed = False

    if ci is False:
        update_status('pending', 'About to verify QML files')

    qmllint_bin = find_qmllint()

    for suffix in ('qml', 'js'):
        for filename in Path('.').glob('**/*.' + suffix):

            if lint(filename, qmllint_bin) is False:
                failed = True

    if failed is True:
        if ci is False:
            update_status('failure', 'QML files are not valid')
        sys.exit(1)
    else:
        if ci is False:
            update_status('success', 'QML files are valid')
        sys.exit(0)