CONTRIBUTING-DEV.md

# Setup your development environment

## Introduction

Castopod is a web app based on the `php` framework
[CodeIgniter 4](https://codeigniter.com).

We use [Docker](https://www.docker.com/) quickly setup a dev environment. A
`docker-compose.yml` and `Dockerfile` are included in the project's root folder
to help you kickstart your contribution.

> You don't need any prior knowledge of Docker to follow the next steps.
> However, if you wish to use your own environment, feel free to do so!

## Setup instructions

### 1. Pre-requisites

0. Install [docker](https://docs.docker.com/get-docker).

1. Clone Castopod project by running:

   ```bash
   git clone https://code.castopod.org/adaures/castopod.git
   ```

2. Create a `.env` file with the minimum required config to connect the app to
   the database and use redis as a cache handler:

   ```ini
   CI_ENVIRONMENT="development"
   # If set to development, you must run `pnpm run dev` to start the static assets server
   vite.environment="development"

   # By default, this is set to true in the app config.
   # For development, this must be set to false as it is
   # on a local environment
   app.forceGlobalSecureRequests=false

   app.baseURL="http://localhost:8080/"

   admin.gateway="cp-admin"
   auth.gateway="cp-auth"

   database.default.hostname="mariadb"
   database.default.database="castopod"
   database.default.username="castopod"
   database.default.password="castopod"
   database.default.DBPrefix="dev_"

   analytics.salt="DEV_ANALYTICS_SALT"

   cache.handler="redis"
   cache.redis.host="redis"

   # You may not want to use redis as your cache handler
   # Comment/remove the two lines above and uncomment
   # the next line for file caching.
   # -----------------------
   #cache.handler="file"

   ######################################
   # Media config
   ######################################
   media.baseURL="http://localhost:8080/"

   # S3
   # Uncomment to store s3 objects using adobe/s3mock service
   # -----------------------
   #media.fileManager="s3"
   #media.s3.bucket="castopod"
   #media.s3.endpoint="http://172.31.0.6:9090/"
   #media.s3.pathStyleEndpoint=true
   ```

   > [!NOTE]  
   > You can tweak your environment by setting more environment variables in
   > your custom `.env` file. See the `env` for examples or the
   > [CodeIgniter4 User Guide](https://codeigniter.com/user_guide/index.html)
   > for more info.

3. (for docker desktop) Add the repository you've cloned to docker desktop's
   `Settings` > `Resources` > `File Sharing`

### 2. (recommended) Develop inside the app container with VSCode

If you're working in VSCode, you can take advantage of the `.devcontainer/`
folder. It defines a development environment (dev container) with preinstalled
requirements and VSCode extensions so you don't have to worry about them. All
required services will be loaded automagically! 🪄

1. Install the VSCode extension
   [Remote - Containers](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers)
2. `Ctrl/Cmd + Shift + P` > `Open in container`

   > The VSCode window will reload inside the dev container. Expect several
   > minutes during first load as it is building all necessary services.

   **Note**: The dev container will start by running Castopod's php server.
   During development, you will have to start [Vite](https://vitejs.dev)'s dev
   server for compiling the typescript code and styles:

   ```bash
   # run Vite dev server
   pnpm run dev
   ```

   If there is any issue with the php server not running, you can restart them
   using the following commands:

   ```bash
   # run Castopod server
   php spark serve - 0.0.0.0
   ```

3. You're all set! 🎉

   You're now **inside the dev container**, you may use the VSCode console
   (`Terminal` > `New Terminal`) to run any command:

   ```bash
   # PHP is installed
   php -v

   # Composer is installed
   composer -V

   # pnpm is installed
   pnpm -v

   # git is installed
   git version
   ```

For more info, see
[Developing inside a Container](https://code.visualstudio.com/docs/devcontainers/containers)

### 3. Start hacking

You're all set! Start working your magic by updating the project's files! Help
yourself to the
[CodeIgniter4 User Guide](https://codeigniter.com/user_guide/index.html) for
more insights.

To see your changes, go to:

- `http://localhost:8080/` for the Castopod website
- `http://localhost:8080/cp-admin` for the Castopod admin:

  - email: **admin@castopod.local**
  - password: **castopod**

- `http://localhost:8888/` for the phpmyadmin interface:

  - username: **castopod**
  - password: **castopod**

### 2-alt. Develop outside the app container

You do not wish to use the VSCode devcontainer? No problem!

1. Start docker containers manually:

   Go to project's root folder and run:

   ```bash
   # starts all services declared in docker-compose.yml file
   # -d option starts the containers in the background
   docker-compose up -d

   # See all running processes (you should see 3 processes running)
   docker-compose ps

   # Alternatively, you can check all docker processes
   docker ps -a

   ```

   > The `docker-compose up -d` command will boot 5 containers in the
   > background:
   >
   > - `castopod_app`: a php based container with Castopod requirements
   >   installed
   > - `castopod_redis`: a [redis](https://redis.io/) database to handle queries
   >   and pages caching
   > - `castopod_mariadb`: a [mariadb](https://mariadb.org/) server for
   >   persistent data
   > - `castopod_phpmyadmin`: a phpmyadmin server to visualize the mariadb
   >   database.
   > - `castopod_s3`: a mock s3 server to work on the s3 fileManager

2. Run any command inside the containers by prefixing them with
   `docker-compose run --rm app`:

   ```bash
   # use PHP
   docker-compose run --rm app php -v

   # use Composer
   docker-compose run --rm app composer -V

   # use pnpm
   docker-compose run --rm app pnpm -v

   # use git
   docker-compose run --rm app git version
   ```

---

## Going Further

### Install Castopod's dependencies

1. Install php dependencies with [Composer](https://getcomposer.org/)

   ```bash
   composer install
   ```

   > [!NOTE]  
   > The php dependencies aren't included in the repository. Composer will check
   > the `composer.json` and `composer.lock` files to download the packages with
   > the right versions. The dependencies will live under the `vendor/` folder.
   > For more info, check out the
   > [Composer documentation](https://getcomposer.org/doc/).

2. Install javascript dependencies with [pnpm](https://pnpm.io/)

   ```bash
   pnpm install
   ```

   > [!NOTE]  
   > The javascript dependencies aren't included in the repository. Pnpm will
   > check the `package.json` and `pnpm-lock.yaml` files to download the
   > packages with the right versions. The dependencies will live under the
   > `node_module` folder. For more info, check out the
   > [PNPM documentation](https://pnpm.io/motivation).

3. Generate static assets:

   ```bash
   # build all static assets at once
   pnpm run build:static

   # build specific assets
   pnpm run build:icons
   pnpm run build:svg
   ```

   > [!NOTE]  
   > The static assets generated live under the `public/assets` folder, it
   > includes javascript, styles, images, fonts, icons and svg files.

### Initialize and populate database

> [!TIP]  
> You may skip this section if you go through the install wizard (go to
> `/cp-install`).

1. Build the database with the migrate command:

   ```bash
   # loads the database schema during first migration
   php spark migrate -all
   ```

   You may need to undo the migration (rollback):

   ```bash
   # rolls back database schema (deletes all tables and their content)
   php spark migrate:rollback
   ```

2. Populate the database with the required data:

   ```bash
   # Populates all required data
   php spark db:seed DevSeeder
   ```

   You may choose to add data separately:

   ```bash
   # Populates all categories
   php spark db:seed CategorySeeder

   # Populates all Languages
   php spark db:seed LanguageSeeder

   # Adds a superadmin with [admin@castopod.local / castopod] credentials
   php spark db:seed DevSuperadminSeeder
   ```

3. (optionnal) Populate the database with test data:

   - Populate with fake podcast analytics:

   ```bash
   php spark db:seed FakePodcastsAnalyticsSeeder
   ```

   - Populate with fake website analytics:

   ```bash
   php spark db:seed FakeWebsiteAnalyticsSeeder
   ```

### Useful docker / docker-compose commands

- Monitor the app container:

```bash
docker-compose logs --tail 50 --follow --timestamps app
```

- Interact with redis server using included redis-cli command:

```bash
docker exec -it castopod_redis redis-cli
```

- Monitor the redis container:

```bash
docker-compose logs --tail 50 --follow --timestamps redis
```

- Monitor the mariadb container:

```bash
docker-compose logs --tail 50 --follow --timestamps mariadb
```

- Monitor the phpmyadmin container:

```bash
docker-compose logs --tail 50 --follow --timestamps phpmyadmin
```

- Restart docker containers:

```bash
docker-compose restart
```

- Destroy all containers, opposite of `up` command:

```bash
docker-compose down
```

- Rebuild app container:

```bash
docker-compose build app
```

Check [docker](https://docs.docker.com/engine/reference/commandline/docker/) and
[docker-compose](https://docs.docker.com/compose/reference/) documentations for
more insights.

## Known issues

### Allocation failed - JavaScript heap out of memory

This happens when running `pnpm install`.

👉 By default, docker might not have access to enough RAM. Allocate more memory
and run `pnpm install` again.

### (Linux) Files created inside container are attributed to root locally

You may use Linux user namespaces to fix this on your machine:

> [!NOTE]  
> Replace "username" with your local username

1. Go to `/etc/docker/daemon.json` and add:

   ```json
   {
     "userns-remap": "username"
   }
   ```

2. Configure the subordinate uid/guid:

   ```bash
   # in /etc/subuid
   username:1000:1
   username:100000:65536
   ```

   ```bash
   # in /etc/subgid
   username:1000:1
   username:100000:65536
   ```

3. Restart docker:

   ```bash
   sudo systemctl restart docker
   ```

4. That's it! Now, the root user in the container will be mapped to the user on
   your local machine, no more permission issues! 🎉

You can check
[this great article](https://www.jujens.eu/posts/en/2017/Jul/02/docker-userns-remap/)
to know more about how it works.