# Python imports
import json
from datetime import timedelta

# Django imports
from django.utils import timezone
from django.db.models import Q
from django.conf import settings

# Third party imports
from celery import shared_task
from sentry_sdk import capture_exception

# Module imports
from plane.db.models import Issue, Project, State
from plane.bgtasks.issue_activites_task import issue_activity


@shared_task
def archive_and_close_old_issues():
    archive_old_issues()
    close_old_issues()


def archive_old_issues():
    try:
        # Get all the projects whose archive_in is greater than 0
        projects = Project.objects.filter(archive_in__gt=0)

        for project in projects:
            project_id = project.id
            archive_in = project.archive_in

            # Get all the issues whose updated_at in less that the archive_in month
            issues = Issue.issue_objects.filter(
                Q(
                    project=project_id,
                    archived_at__isnull=True,
                    updated_at__lte=(timezone.now() - timedelta(days=archive_in * 30)),
                    state__group__in=["completed", "cancelled"],
                ),
                Q(issue_cycle__isnull=True)
                | (
                    Q(issue_cycle__cycle__end_date__lt=timezone.now().date())
                    & Q(issue_cycle__isnull=False)
                ),
                Q(issue_module__isnull=True)
                | (
                    Q(issue_module__module__target_date__lt=timezone.now().date())
                    & Q(issue_module__isnull=False)
                ),
            ).filter(
                Q(issue_inbox__status=1)
                | Q(issue_inbox__status=-1)
                | Q(issue_inbox__status=2)
                | Q(issue_inbox__isnull=True)
            )

            # Check if Issues
            if issues:
                # Set the archive time to current time
                archive_at = timezone.now()

                issues_to_update = []
                for issue in issues:
                    issue.archived_at = archive_at
                    issues_to_update.append(issue)

                # Bulk Update the issues and log the activity
                if issues_to_update: 
                    Issue.objects.bulk_update(
                        issues_to_update, ["archived_at"], batch_size=100
                    )
                    [
                        issue_activity.delay(
                            type="issue.activity.updated",
                            requested_data=json.dumps({"archived_at": str(archive_at)}),
                            actor_id=str(project.created_by_id),
                            issue_id=issue.id,
                            project_id=project_id,
                            current_instance=None,
                            subscriber=False,
                            epoch=int(timezone.now().timestamp())
                        )
                        for issue in issues_to_update
                    ]
        return
    except Exception as e:
        if settings.DEBUG:
            print(e)
        capture_exception(e)
        return


def close_old_issues():
    try:
        # Get all the projects whose close_in is greater than 0
        projects = Project.objects.filter(close_in__gt=0).select_related(
            "default_state"
        )

        for project in projects:
            project_id = project.id
            close_in = project.close_in

            # Get all the issues whose updated_at in less that the close_in month
            issues = Issue.issue_objects.filter(
                Q(
                    project=project_id,
                    archived_at__isnull=True,
                    updated_at__lte=(timezone.now() - timedelta(days=close_in * 30)),
                    state__group__in=["backlog", "unstarted", "started"],
                ),
                Q(issue_cycle__isnull=True)
                | (
                    Q(issue_cycle__cycle__end_date__lt=timezone.now().date())
                    & Q(issue_cycle__isnull=False)
                ),
                Q(issue_module__isnull=True)
                | (
                    Q(issue_module__module__target_date__lt=timezone.now().date())
                    & Q(issue_module__isnull=False)
                ),
            ).filter(
                Q(issue_inbox__status=1)
                | Q(issue_inbox__status=-1)
                | Q(issue_inbox__status=2)
                | Q(issue_inbox__isnull=True)
            )

            # Check if Issues
            if issues:
                if project.default_state is None:
                    close_state = State.objects.filter(group="cancelled").first()
                else:
                    close_state = project.default_state

                issues_to_update = []
                for issue in issues:
                    issue.state = close_state
                    issues_to_update.append(issue)

                # Bulk Update the issues and log the activity
                if issues_to_update:
                    Issue.objects.bulk_update(issues_to_update, ["state"], batch_size=100)
                    [
                        issue_activity.delay(
                            type="issue.activity.updated",
                            requested_data=json.dumps({"closed_to": str(issue.state_id)}),
                            actor_id=str(project.created_by_id),
                            issue_id=issue.id,
                            project_id=project_id,
                            current_instance=None,
                            subscriber=False,
                            epoch=int(timezone.now().timestamp())
                        )
                        for issue in issues_to_update
                    ]
        return
    except Exception as e:
        if settings.DEBUG:
            print(e)
        capture_exception(e)
        return