# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""
Add notifications via taskcluster-notify for release tasks
"""
from string import Formatter

from taskgraph.transforms.base import TransformSequence
from taskgraph.util.schema import resolve_keyed_by

from gecko_taskgraph.util.scriptworker import get_release_config

transforms = TransformSequence()


class TitleCaseFormatter(Formatter):
    """Support title formatter for strings"""

    def convert_field(self, value, conversion):
        if conversion == "t":
            return str(value).title()
        super().convert_field(value, conversion)
        return value


titleformatter = TitleCaseFormatter()


@transforms.add
def add_notifications(config, jobs):
    release_config = get_release_config(config)

    for job in jobs:
        label = "{}-{}".format(config.kind, job["name"])

        notifications = job.pop("notifications", None)
        if notifications:
            resolve_keyed_by(
                notifications, "emails", label, project=config.params["project"]
            )
            emails = notifications["emails"]
            format_kwargs = dict(
                task=job,
                config=config.__dict__,
                release_config=release_config,
            )
            subject = titleformatter.format(notifications["subject"], **format_kwargs)
            message = titleformatter.format(notifications["message"], **format_kwargs)
            emails = [email.format(**format_kwargs) for email in emails]

            # By default, we only send mail on success to avoid messages like 'blah is in the
            # candidates dir' when cancelling graphs, dummy job failure, etc
            status_types = notifications.get("status-types", ["on-completed"])
            for s in status_types:
                job.setdefault("routes", []).extend(
                    [f"notify.email.{email}.{s}" for email in emails]
                )

            # Customize the email subject to include release name and build number
            job.setdefault("extra", {}).update(
                {
                    "notify": {
                        "email": {
                            "subject": subject,
                        }
                    }
                }
            )
            if message:
                job["extra"]["notify"]["email"]["content"] = message

        yield job
