commit 9acde4bd9d61bfac92a5104fa11e5fe049f57eca
Author: Scott Wallace <scott@wallace.sh>
Date:   Mon May 2 13:44:10 2022 +0100

    Initial commit

diff --git a/.dockerignore b/.dockerignore
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+++ b/.dockerignore
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+.gitignore
\ No newline at end of file
diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+__pycache__/
+.mypy_cache/
+.pyenv/
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
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+++ b/.gitlab-ci.yml
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+# This file is a template, and might need editing before it works on your project.
+# To contribute improvements to CI/CD templates, please follow the Development guide at:
+# https://docs.gitlab.com/ee/development/cicd/templates.html
+# This specific template is located at:
+# https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Getting-Started.gitlab-ci.yml
+
+# This is a sample GitLab CI/CD configuration file that should run without any modifications.
+# It demonstrates a basic 3 stage CI/CD pipeline. Instead of real tests or scripts,
+# it uses echo commands to simulate the pipeline execution.
+#
+# A pipeline is composed of independent jobs that run scripts, grouped into stages.
+# Stages run in sequential order, but jobs within stages run in parallel.
+#
+# For more information, see: https://docs.gitlab.com/ee/ci/yaml/index.html#stages
+
+before_script:
+  - pip install -Ur requirements.txt
+
+stages: # List of stages for jobs, and their order of execution
+  - test
+  - build
+
+build-job: # This job runs in the build stage, which runs first.
+  stage: build
+  script:
+    - echo "Building the Docker image..."
+    - echo $CI_REGISTRY_PASSWORD | docker login -u $CI_REGISTRY_USER $CI_REGISTRY --password-stdin
+    - docker build -t $CI_REGISTRY_IMAGE .
+    - docker push $CI_REGISTRY_IMAGE
+    - echo "Build complete."
+
+unit-test-job: # This job runs in the test stage.
+  stage: test
+  script:
+    - echo "Running unit tests..."
+    - python3 -munittest discover
+    - echo "Testing complete"
+
+lint-test-job: # This job also runs in the test stage.
+  stage: test # It can run at the same time as unit-test-job (in parallel).
+  script:
+    - echo "Linting code..."
+    - pylint -j0 -v $(git ls-files '*.py')
+    - echo "No lint issues found."
diff --git a/Dockerfile b/Dockerfile
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+++ b/Dockerfile
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+# Build an intermediate image for the Python requirements
+FROM python:3.9-slim-buster as intermediate
+
+# Install Git and Python requirements
+RUN apt update && apt install -y build-essential
+COPY requirements.txt .
+RUN python -m pip install --user -r requirements.txt pip
+
+# Start from a fresh image
+FROM python:3.9-slim-buster
+
+# Keeps Python from generating .pyc files in the container
+ENV PYTHONDONTWRITEBYTECODE=1
+
+# Turns off buffering for easier container logging
+ENV PYTHONUNBUFFERED=1
+
+RUN useradd -u 4000 -d /app appuser
+WORKDIR /app
+
+# Copy over the Python requirements from the intermediate container
+COPY --from=intermediate /root/.local /app/.local
+
+RUN chown -R appuser: /app
+
+USER appuser
+
+# Set the main execution command
+ENTRYPOINT [".local/bin/waitress-serve", "main:app"]
+# HEALTHCHECK --interval=5s --timeout=30s --start-period=5s --retries=3 CMD [ "/app/healthcheck.sh" ]
+EXPOSE 8080/tcp
+
+# Copy in the code
+COPY main.py .
diff --git a/docker-compose.yaml b/docker-compose.yaml
new file mode 100644
index 0000000..0ab5d8b
--- /dev/null
+++ b/docker-compose.yaml
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+---
+version: "3"
+services:
+  ical_offset:
+    container_name: ical_offset
+    build:
+      context: .
+    image: ical_offset:latest
+    restart: unless-stopped
diff --git a/main.py b/main.py
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index 0000000..9205976
--- /dev/null
+++ b/main.py
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+"""
+Take existing calendar and update it slightly
+"""
+
+from datetime import datetime, time, timedelta
+
+import requests
+from flask import Flask, Response, request
+from icalendar import Calendar, Event  # type: ignore[import]
+from werkzeug.middleware.proxy_fix import ProxyFix
+
+app = Flask(__name__)
+app.wsgi_app = ProxyFix(app.wsgi_app, x_proto=1)  # type: ignore[assignment]
+
+
+@app.route('/', methods=['get'])
+def process() -> Response:
+    """
+    Fetch ICS url and convert from Events to Todos
+
+    Returns:
+        Response: ical response
+    """
+
+    # Fetch existing calendar
+    orig = requests.get(request.args['url'])
+    days = request.args.get('days', '0')
+    hours = request.args.get('hours', '0')
+    mins = request.args.get('mins', '0')
+
+    orig_cal = Calendar.from_ical(orig.text)
+    cal = Calendar()
+
+    cal.add('version', '2.0')
+    cal.add(
+        'prodid',
+        '-//Scott Wallace//event2task//EN',
+    )
+
+    for component in orig_cal.subcomponents:
+        if isinstance(component, Event):
+            entry = Event()
+            entry.add('description', component['description'])
+            entry.add('dtstamp', component['dtstamp'])
+            # entry.add('dtstart', component['dtstart'])
+            entry.add(
+                'dtstart',
+                datetime.combine(component.decoded('dtstart'), time(0))
+                + timedelta(days=int(days), hours=int(hours), minutes=int(mins)),
+            )
+            entry.add('summary', component['summary'])
+            entry.add('uid', component['uid'])
+
+            cal.add_component(entry)
+
+    return Response(
+        cal.to_ical().decode().replace('\\r\\n', '\n').strip(),
+        headers={'content-type': 'text/calendar; charset=UTF-8'},
+    )
diff --git a/requirements.txt b/requirements.txt
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+++ b/requirements.txt
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+icalendar
+flask
+requests
+waitress