Implement an organizer customer account and fee system | Task management

[lcduong]

This PR is part of issue #383

Apply django-celery-beat to manage tasks, this PR implement:

• Migration file to init tasks for billing invoice which listed in this PR Implement schedule task to collect billing invoice #417 (instead of save in settings file, we use django-celery-beat to save in database)
• /control/admin/task_management for manage all tasks, Admin can view all scheduled tasks in the systems and able to enable/disable it.

Summary by Sourcery

Implement a task management system for administrators and refactor billing tasks to use django-celery-beat for scheduling.

New Features:

• Introduce a task management system for administrators to view and manage scheduled tasks, including enabling and disabling them.

Enhancements:

• Refactor billing and payment tasks to use database-backed scheduling with django-celery-beat instead of static settings.

Build:

• Add django_celery_beat and cron-descriptor as dependencies to manage and describe scheduled tasks.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR implements task management functionality for billing-related tasks using django-celery-beat. The main changes include moving scheduled tasks from settings to the database, adding a task management UI for administrators, and improving task execution with database transaction handling.

Class diagram for Task Management and Billing System

classDiagram
    class TaskList {
        +template_name
        +context_object_name
        +model
        +filter_form()
        +get_queryset()
        +process_task_data(task)
        +get_context_data()
        +post(request, *args, **kwargs)
    }
    class TaskFilterForm {
        +name
        +status
        +filter_qs(qs)
    }
    class PeriodicTask {
        +name
        +task
        +crontab
    }
    class CrontabSchedule {
        +minute
        +hour
        +day_of_month
        +month_of_year
        +day_of_week
    }
    TaskList --> TaskFilterForm
    TaskList --> PeriodicTask
    PeriodicTask --> CrontabSchedule
    TaskFilterForm --> PeriodicTask

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File-Level Changes

Change	Details	Files
Implemented database-driven task scheduling using django-celery-beat	Added django-celery-beat to project dependencies Created migration to initialize billing-related scheduled tasks Moved task schedules from settings.py to database storage Added database transaction handling with scopes_disabled() for task execution	src/pretix/settings.py src/pretix/plugins/scheduledtasks/migrations/init_scheduled_tasks.py src/pretix/eventyay_common/tasks.py pyproject.toml
Added task management UI for administrators	Created new TaskList view for managing scheduled tasks Added task filtering functionality by name and status Implemented task enable/disable toggle functionality Added task management to admin navigation	src/pretix/control/views/admin.py src/pretix/control/forms/filter.py src/pretix/control/templates/pretixcontrol/admin/task_management/task_management.html src/pretix/static/task_management/js/task_management.js src/pretix/control/navigation.py src/pretix/control/urls.py

Possibly linked issues

• Implement an organizer customer account and fee system #383: The PR implements the organizer account and fee system as described in the issue.

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[sourcery-ai]

Hey @lcduong - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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