feat: initial work to separate task processor from main repository (#1)

* Initial work to separate task processor from main repository

* Fix workflow

* Add pointless __init__ file

* Remove pointless __init__ file

* Loosen Django dependency

* Update readme wording and example

* typing.Optional -> `|`

* Add comment to seemingly unused import.

* Add TODO

* Remove unnecessary typing import

* Add typing to managers module

* Formatting

* Refactor helpers

* Add __init__.py

* Explicitly include sql files

* More pyproject changes

* re-add __init__ and change pyproject include

* change include definition

* Add build-system

* Add return types to manager methods

.flake8

@@ -0,0 +1,10 @@
+[flake8]
+max-line-length = 120
+max-complexity = 10
+exclude = .git,.venv,.direnv,__pycache__,*/migrations/*
+
+per-file-ignores =
+    # Need the * prefix to work with pre-commit which runs from the root of the repo
+    *app/settings/local.py: F403, F405
+    *app/settings/production.py: F403, F405
+    *app/settings/saas.py: F403, F405

.github/workflows/unit-tests.yml

@@ -0,0 +1,58 @@
+name: Unit tests, linting & formatting
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    name: Flagsmith Workflows Unit Tests
+    env:
+      DATABASE_URL: postgres://postgres:postgres@localhost:5432/flagsmith_task_processor
+      DJANGO_SETTINGS_MODULE: tests.settings
+
+    services:
+      postgres:
+        image: postgres:11.12-alpine
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: postgres
+        ports: ['5432:5432']
+        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
+
+    strategy:
+      max-parallel: 4
+      matrix:
+        python-version: ['3.10', '3.11']
+
+    steps:
+      - name: Cloning repo
+        uses: actions/checkout@v3
+
+      - name: Install poetry
+        run: pipx install poetry
+
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+          cache: 'poetry'
+
+      - name: Install Dependencies
+        if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
+        run: poetry install
+
+      - name: Run Linters
+        run: | 
+          poetry run black --check .
+          poetry run isort --check-only --diff .
+          poetry run flake8
+
+      - name: Check for missing migrations
+        run: poetry run python manage.py makemigrations --no-input --dry-run --check
+
+      - name: Run Tests
+        run: poetry run pytest tests/unit

manage.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+import os
+import sys
+
+if __name__ == "__main__":
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "tests.settings")
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        )
+    execute_from_command_line(sys.argv)