Radarr/CONTRIBUTING.md

How to Contribute

This is a personal project forked from Radarr. We're not actively seeking contributions at this time, but this guide documents the development process.

Development

Aletheia is written in C# (backend) and JS (frontend). The backend is built on .NET 8, while the frontend utilizes React.

Tools required

• Visual Studio 2022 or higher is recommended (https://www.visualstudio.com/vs/). The community version is free and works (https://www.visualstudio.com/downloads/).

VS 2022 V17.8 or higher is recommended as it includes the .NET 8 SDK {.is-info}

• HTML/Javascript editor of choice (VS Code/Sublime Text/Webstorm/Atom/etc)
• Git
• The Node.js runtime is required. The following versions are supported:
  • 20 (any minor or patch version within this) {.grid-list}

The Application will NOT run on older versions such as 18.x, 16.x or any version below 20.0! Due to a dependency issue, it will also not run on 21.x and is untested on other verisons. {.is-warning}

• Yarn is required to build the frontend
  • Yarn is included with Node 20+ by default. Enable it with corepack enable
  • For other Node versions, install it with npm i -g corepack

Getting started

1. Clone the repository: git clone https://github.com/cheir-mneme/aletheia.git
2. Install dependencies and build as described below
3. (Optional) Install pre-commit hooks: ./scripts/setup-hooks.sh

The pre-commit hooks will automatically run lint checks and secret scanning before each commit.

• ESLint: Checks TypeScript/JavaScript code quality
• Prettier: Formats code consistently
• Secretlint: Scans for accidentally committed secrets (API keys, tokens, etc.) You can also run these tools manually:
• yarn lint --fix for JS/TS
• yarn stylelint-linux --fix for CSS
• yarn secretlint "**/*" for secret scanning

Building the frontend

• Navigate to the cloned directory

• Install the required Node Packages

  yarn install
  

• Start webpack to monitor your development environment for any changes that need post processing using:

  yarn start
  

Building the Backend

The backend solution is most easily built and ran in Visual Studio or Rider, however if the only priority is working on the frontend UI it can be built easily from command line as well when the correct SDK is installed.

Visual Studio

Ensure startup project is set to Radarr.Console and framework to net8.0 {.is-info}

1. First Build the solution in Visual Studio, this will ensure all projects are correctly built and dependencies restored
2. Next Debug/Run the project in Visual Studio to start Aletheia
3. Open http://localhost:7878

Command line

1. Clean solution

dotnet clean src/Radarr.sln -c Debug

1. Restore and Build debug configuration for the correct platform (Posix or Windows)

dotnet msbuild -restore src/Radarr.sln -p:Configuration=Debug -p:Platform=Posix -t:PublishAllRids

1. Run the produced executable from /_output

Contributing Code

• Make meaningful commits using conventional commit format
• Add tests (unit/integration) for new features
• Commit with *nix line endings for consistency
• Use 4 spaces instead of tabs
• Match existing code patterns and style

Commit Format

Use Conventional Commits:

type(scope): description

Types:

• feat: New feature
• fix: Bug fix
• docs: Documentation only
• refactor: Code change (no behavior change)
• test: Test additions/changes
• chore: Build, deps, config

Scope (optional): audiobook, metadata, ui, database, api, indexer

Examples:

feat(audiobook): add narrator matching logic
fix(metadata): handle API timeout gracefully
refactor(database): extract MediaItem base class
docs: update installation instructions

Pull Requesting

• Only make pull requests to develop, never main
• Use meaningful feature branch names: feature/, fix/, refactor/, docs/
• Each PR should contain related changes (one feature/bug fix per PR)
• Fill out the PR template completely

Unit Testing

Aletheia utilizes nunit for its unit, integration, and automation test suite.

Running Tests

Tests can be run easily from within VS using the included nunit3testadapter nuget package or from the command line using the included bash script test.sh.

From VS simply navigate to Test Explorer and run or debug the tests you'd like to examine.

Tests can be run all at once or one at a time in VS.

From command line the test.sh script accepts 3 parameters

test.sh <PLATFORM> <TYPE> <COVERAGE>

Writing Tests

While not always fun, we encourage writing unit tests for any backend code changes. This will ensure the change is functioning as you intended and that future changes dont break the expected behavior.

We currently require 80% coverage on new code when submitting a PR {.is-info}

If you have any questions about any of this, please let us know.

Translation

Translation files are stored in the repo at src/NzbDrone.Core/Localization. The English translation, en.json, serves as the source for all other translations.

Adding Translation Strings in Code

When adding a new string to either the UI or backend, a key must also be added to src/NzbDrone.Core/Localization/en.json along with the default value in English. This key may then be consumed as follows:

PRs for translation of log messages will not be accepted {.is-warning}

Backend Strings

Backend strings may be added utilizing the Localization Service GetLocalizedString method

private readonly ILocalizationService _localizationService;

public IndexerCheck(ILocalizationService localizationService)
{
  _localizationService = localizationService;
}
        
var translated = _localizationService.GetLocalizedString("IndexerHealthCheckNoIndexers")

Frontend Strings

New strings can be added to the frontend by importing the translate function and using a key specified from en.json

import translate from 'Utilities/String/translate';

<div>
  {translate('UnableToAddANewIndexerPleaseTryAgain')}
</div>