"""Read-only page/asset checks for a running packaged app; never writes order data."""
import argparse
import getpass
import http.cookiejar
import re
import urllib.parse
import urllib.request


def main():
    parser=argparse.ArgumentParser(description=__doc__)
    parser.add_argument('--url',default='http://127.0.0.1:8080')
    parser.add_argument('--username',required=True,help='Use an initialized admin account')
    args=parser.parse_args()
    base=args.url.rstrip('/')
    opener=urllib.request.build_opener(urllib.request.HTTPCookieProcessor(http.cookiejar.CookieJar()))
    def get(path):
        with opener.open(base+path,timeout=30) as response:
            return response.geturl(),response.read()
    _,body=get('/login')
    match=re.search(r'name="csrf_token" value="([^"]+)"',body.decode('utf-8'))
    if not match:
        raise SystemExit('Complete first-time setup before running this check.')
    fields={'username':args.username,'password':getpass.getpass('Password: '),'csrf_token':match[1]}
    with opener.open(urllib.request.Request(base+'/login',data=urllib.parse.urlencode(fields).encode()),timeout=30) as response:
        if response.geturl().rstrip('/') != base:
            raise SystemExit('Login failed or password change is required.')
        response.read()
    for path,marker in [('/orders/new',b'request_key'),('/users',b'username'),('/materials',b'matImpModal'),
                        ('/suppliers',b'supImpModal'),('/static/money.js',b'lineCents'),('/static/style.css',b'modal-mask')]:
        url,body=get(path)
        if url != base+path or marker not in body:
            raise SystemExit('Failed page/asset check: '+path)
        print('PASS',path)
    for path in ['/materials/import_template.xlsx','/suppliers/import_template.xlsx','/import_template.xlsx']:
        url,body=get(path)
        if url != base+path or not body.startswith(b'PK'):
            raise SystemExit('Failed workbook check: '+path)
        print('PASS',path)
    print('Packaged page/asset checks passed; order data was not modified.')


if __name__=='__main__':
    main()