Refactor 'main.py' #36

	name: Tests and Style

	on: [push, pull_request]

	jobs:
	build:
	strategy:
	matrix:
	python-version: [3.11.4]
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Switch to Current Branch
	run: git checkout ${{ env.BRANCH }}

	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}

	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements.txt
	pip install -e .

	- name: Run flake8
	run: \|
	pip install flake8
	# stop the build if there are flake8 errors
	flake8 . --count --show-source --statistics

	- name: Run unit tests
	run: \|
	pip install pytest
	python -m pytest src/jp2_remediator/tests/unit

	- name: Run coverage
	run: \|
	pip install coverage
	python -m coverage run -p -m pytest src/jp2_remediator/tests/unit
	python -m coverage combine
	python -m coverage report -m --skip-covered
	python -m coverage xml

	# Fetch base branch for comparison (e.g., main)
	- name: Fetch base branch
	run: git fetch origin main

	# Compare coverage with the base branch
	- name: Compare coverage
	run: \|
	pip install diff-cover
	git checkout main
	python -m coverage run -p -m pytest src/jp2_remediator/tests/unit
	python -m coverage xml -o coverage-base.xml
	git checkout -
	python diff-cover --compare-branch=main coverage.xml

	# Fail if coverage decreases
	- name: Fail if coverage decreases
	run: \|
	python diff-cover --compare-branch=main coverage.xml --fail-under=100

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