# Copyright (C) 2018-2020  The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information

import logging

from swh.core.utils import grouper
from swh.scheduler.utils import create_task_dict

MAX_ORIGINS_PER_TASK = 100


def process_journal_objects(messages, *, scheduler, task_names):
    """Worker function for `JournalClient.process(worker_fn)`, after
    currification of `scheduler` and `task_names`."""
    assert set(messages) == {"origin_visit_status"}, set(messages)
    process_origin_visits(messages["origin_visit_status"], scheduler, task_names)


def process_origin_visits(visits, scheduler, task_names):
    task_dicts = []
    logging.debug("processing origin visits %r", visits)
    if task_names.get("origin_metadata"):
        visits = [visit for visit in visits if visit["status"] == "full"]
        visit_batches = grouper(visits, MAX_ORIGINS_PER_TASK)
        for visit_batch in visit_batches:
            visit_urls = []
            for visit in visit_batch:
                if isinstance(visit["origin"], str):
                    visit_urls.append(visit["origin"])
                else:
                    visit_urls.append(visit["origin"]["url"])
            task_dicts.append(
                create_task_dict(
                    task_names["origin_metadata"],
                    "oneshot",
                    visit_urls,
                    retries_left=1,
                )
            )

    if task_dicts:
        scheduler.create_tasks(task_dicts)