open_issues.py

#!/usr/bin/env python3

"Summarise open issues."

from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
import json
import os
import smtplib
import ssl
import sys

from jinja2 import Template
import github_utils as github


def run(args):
    people = json.load(args.subscriber_file)
    for person in people:
        text, html = summarise_issues(person["repos"])
        if args.email:
            send_email(person["email"], "Open Issues Summary", text, html)
        else:
            print(f"# {person['email']}")
            print(text)


def summarise_issues(repos):
    text = []
    html_data = []
    with open("open_issues.tpl", encoding="utf-8") as tpl_fd:
        html = Template(tpl_fd.read())
    state = "open"
    labels = ""
    for repo in repos:
        repo_data = github.get(f"https://api.github.com/repos/{repo}").json()
        issues = github.collapse_list(
            f"https://api.github.com/repos/{repo}/issues?state={state}&labels={labels}"
        )
        sorted_issues = [
            i
            for i in sorted(issues, key=lambda issue: issue["created_at"])
            if "pull_request" not in i
        ]
        for issue in sorted_issues:
            issue["open_for"] = abs(github.delta_days(issue["created_at"]))

        html_data.append(
            {"id": repo, "name": repo_data["description"], "issues": sorted_issues}
        )

        text.append(f"## {repo_data['description']}")
        if sorted_issues:
            for issue in sorted_issues:
                text.append("* #%i: %s" % (issue["number"], issue["title"]))
        else:
            text.append("No open issues.")
        text.append("")
    return "\n".join(text), html.render(repos=html_data)


def send_email(receiver_email, subject, text, html):
    sys.stderr.write(f"* Sending e-mail to {receiver_email}...\n")
    sender_email = os.environ.get("EMAIL_FROM", None)
    smtp_server = os.environ.get("SMTP_HOST", None)
    smtp_port = 465
    smtp_username = os.environ.get("SMTP_USERNAME", None)
    smtp_password = os.environ.get("SMTP_PASSWORD", None)
    message = MIMEMultipart("alternative")
    message["Subject"] = subject
    message["From"] = sender_email
    message["To"] = receiver_email
    message.attach(MIMEText(text, "plain"))
    message.attach(MIMEText(html, "html"))
    context = ssl.create_default_context()
    with smtplib.SMTP_SSL(smtp_server, smtp_port, context=context) as server:
        server.login(smtp_username, smtp_password)
        server.sendmail(sender_email, receiver_email, message.as_string())


if __name__ == "__main__":
    import argparse

    parser = argparse.ArgumentParser(description="List open issues.")
    parser.add_argument(
        "-e", "--email", dest="email", action="store_true", help="send email"
    )
    parser.add_argument(
        "subscriber_file", type=open, help="The subscribers.json file location"
    )
    run(parser.parse_args())