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from urllib.parse import urlparse
from dataclasses import dataclass
import datetime
import tempfile
import requests
import logging
import pickle
import pdfkit
import jinja2
import json
import cups
import os
logging.basicConfig(
format = "%(levelname)s\t[%(asctime)s]\t%(message)s",
level = logging.INFO,
handlers=[
logging.FileHandler("github_printer.log"),
logging.StreamHandler()
])
@dataclass
class RenderedIssue(tempfile.TemporaryDirectory):
gh_api_key: str
issue: dict
# this really should be done by @dataclass imo...
def __post_init__(self):
super().__init__()
def __enter__(self):
self.pdf_path = os.path.join(self.name, "out.pdf")
with open(os.path.join(os.path.split(__file__)[0], "issue.html.j2"), "r") as f:
jinja_template = jinja2.Template(f.read())
gfm_html = gfm_to_html(
self.gh_api_key, self.issue["body"], get_context_from_html_url(self.issue["html_url"])
)
html = jinja_template.render(**self.issue, gfm_html = gfm_html)
pdfkit.from_string(html, self.pdf_path, options = json.loads(os.environ["WKHTMLTOPDF_OPTS"]))
return self.pdf_path
def __exit__(self, exc, value, tb):
self.cleanup()
# we're not inside docker- add the environment variables from the file
if not os.path.exists("/.dockerenv") and os.path.exists("githubPrinter.env"):
from dotenv import load_dotenv
load_dotenv("githubPrinter.env")
logging.info("Not being run in docker. Adding environment variables...")
cups.setUser(os.environ["CUPS_USER"])
cups.setPasswordCB(lambda a: os.environ["CUPS_PASSWD"])
cups.setServer(os.environ["CUPS_HOST"])
conn = cups.Connection()
logging.info(
"Successfully connected to CUPS server. The avaliable printers are %s"
% ", ".join(conn.getPrinters().keys())
)
logging.info(
"The printer selected to print, '%s', to has details %s" % (
os.environ["CUPS_PRINTER"],
json.dumps(conn.getPrinters()[os.environ["CUPS_PRINTER"]], indent=4)
)
)
def get_user_repos(gh_api_key: str, gh_user: str):
req = requests.get(
"https://api.github.com/users/%s/repos" % gh_user,
headers = {
"Authorization": "token %s" % gh_api_key,
"Accept": "application/vnd.github+json"
}
)
if req.status_code == 200:
repos = req.json()
return [get_suffix_from_issues_irl(r["issues_url"]) for r in repos]
else:
logging.error("Request 'get_user_repos' '%s' failed with status code %d. Request returned %s" % (
gh_user, req.status_code, req.text
))
def get_issues_for(gh_api_key: str, url_suffix: str, since: datetime.datetime) -> [dict]:
# logging.info("Searching for issues in %s..." % url_suffix)
req = requests.get(
"https://api.github.com%s" % url_suffix,
headers = {
"Authorization": "token %s" % gh_api_key,
"Accept": "application/vnd.github+json"
},
params = {
"since": since.replace(microsecond = 0).isoformat()
}
)
if req.status_code == 200:
return req.json()
else:
logging.error("Request 'get_issues_for' '%s' failed with status code %d. Request returned %s" % (
url_suffix, req.status_code, req.text
))
def get_context_from_html_url(html_url: str) -> str:
return "/".join(urlparse(html_url).path.split("/")[1:3])
def get_suffix_from_issues_irl(issues_url: str) -> str:
return urlparse(issues_url).path.replace("{/number}", "")
def gfm_to_html(gh_api_key: str, md_text: str, context: str):
req = requests.post(
"https://api.github.com/markdown",
headers = {
"Authorization": gh_api_key,
"Accept": "application/vnd.github+json"
},
json = {
"mode": "gfm",
"context": context,
"text": md_text
}
)
if req.status_code == 200:
return req.text
else:
logging.error("Request 'gfm_to_html' failed with status code %d. Request returned %s" % (
req.status_code, req.text
))
def print_file(file_path: str, actually_print: bool = True):
if actually_print:
conn.printFile(
os.environ["CUPS_PRINTER"], file_path,
"GitHub printer job", json.loads(os.environ["CUPS_OPTS"])
)
logging.info("Sent file %s to the printer..." % file_path)
logging.info("The printer queue is now %s" % json.dumps(conn.getJobs(), indent = 4))
def main():
if not os.path.exists(".last_checked_at"):
since = datetime.datetime(1970, 1, 1)
else:
with open(".last_checked_at", "rb") as f:
since = pickle.load(f)
logging.info("Last checked at %s" % since.replace(microsecond=0).isoformat())
the_next_since = datetime.datetime.now()
repos = get_user_repos(os.environ["GITHUB_TOKEN"], os.environ["GITHUB_USER"])
logging.info("Found %i repositories to search for issues in..." % len(repos))
issues = []
for repo in repos:
issues += get_issues_for(os.environ["GITHUB_TOKEN"], repo, since)
logging.info("Found %i issues..." % len(issues))
for issue in issues:
logging.info("Going to try and render and print issue '%s #%d' in repo '%s'..." % (issue["title"], issue["number"], issue["html_url"]))
with RenderedIssue(os.environ["GITHUB_TOKEN"], issue) as rendered_pdf:
print_file(rendered_pdf, False)
with open(".last_checked_at", "wb") as f:
pickle.dump(the_next_since, f)
logging.info("Run finished. Marked the last time checked as '%s'." % the_next_since.isoformat())
if __name__ == "__main__":
main()
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