#!/usr/bin/env python3
"""Read one supported public Greenhouse board. Copyright 2026 VendorCensus.
MIT license: see public-job-collector-LICENSE.txt. Python 3.9+, no dependencies.
Usage: python3 public-job-collector.py https://job-boards.greenhouse.io/figma
"""
import datetime
import json
import re
import sys
import urllib.request
from urllib.parse import urlsplit

BOARDS = {'figma', 'stripe', 'airbnb', 'cloudflare', 'datadog'}

class NoRedirect(urllib.request.HTTPRedirectHandler):
    def redirect_request(self, req, fp, code, msg, headers, newurl):
        raise ValueError('Unexpected redirect; request stopped')

def collect(value):
    u = urlsplit(value)
    match = re.fullmatch(r'/([a-z0-9-]+)/?', u.path)
    if (u.scheme != 'https' or u.hostname not in {'boards.greenhouse.io', 'job-boards.greenhouse.io'}
            or u.username or u.password or u.port not in (None, 443) or u.query or u.fragment
            or not match or match[1] not in BOARDS):
        raise ValueError('Use a supported Greenhouse board URL: ' + ', '.join(sorted(BOARDS)))
    board = match[1]
    source = f'https://boards-api.greenhouse.io/v1/boards/{board}/jobs'
    request = urllib.request.Request(source, headers={'Accept': 'application/json', 'User-Agent': 'VendorCensus-public-job-collector/1.0'})
    with urllib.request.build_opener(NoRedirect).open(request, timeout=15) as response:
        body = json.load(response)
    if not isinstance(body, dict) or not isinstance(body.get('jobs'), list):
        raise ValueError('Invalid response; not a zero-job result')
    jobs = []
    for j in body['jobs']:
        if not isinstance(j, dict) or not isinstance(j.get('id'), int) or not isinstance(j.get('title'), str):
            continue
        link = j.get('absolute_url')
        if not isinstance(link, str) or not link.startswith('https://'):
            continue
        location = j.get('location')
        name = location.get('name') if isinstance(location, dict) else None
        jobs.append({'id': j['id'], 'title': j['title'], 'url': link, 'location': name if isinstance(name, str) else 'Not stated'})
    return {'provider': 'Greenhouse', 'board': board, 'sourceUrl': source, 'checkedAt': datetime.datetime.now(datetime.timezone.utc).isoformat(), 'jobCount': len(jobs), 'jobs': jobs}

if __name__ == '__main__':
    try:
        if len(sys.argv) != 2:
            raise ValueError(__doc__)
        print(json.dumps(collect(sys.argv[1]), indent=2))
    except Exception as exc:
        print(f'Collection failed: {exc}', file=sys.stderr)
        sys.exit(1)