# Silmataivas (Rust Rewrite)

Silmataivas is a weather monitoring service that sends personalized alerts based on user-defined thresholds and notification preferences. This is the Rust rewrite, providing a RESTful API for managing users, locations, weather thresholds, and notification settings.

## Features
- Weather monitoring using OpenWeatherMap API
- Custom weather thresholds per user
- Flexible notifications: NTFY (push) and SMTP (email)
- User-specific configuration
- RESTful API for all resources
- Automatic OpenAPI documentation at `/docs`

## API Usage
All API endpoints (except `/health` and `/docs`) require authentication using a Bearer token:

```
Authorization: Bearer <user_id>
```

### Main Endpoints
- `GET /health` — Health check
- `GET /api/users` — List users
- `POST /api/users` — Create user
- `GET /api/users/:id` — Get user
- `PUT /api/users/:id` — Update user
- `DELETE /api/users/:id` — Delete user
- `GET /api/locations` — List locations
- `POST /api/locations` — Create location
- `GET /api/locations/:id` — Get location
- `PUT /api/locations/:id` — Update location
- `DELETE /api/locations/:id` — Delete location
- `GET /api/weather-thresholds?user_id=...` — List thresholds for user
- `POST /api/weather-thresholds` — Create threshold
- `GET /api/weather-thresholds/:id/:user_id` — Get threshold
- `PUT /api/weather-thresholds/:id/:user_id` — Update threshold
- `DELETE /api/weather-thresholds/:id/:user_id` — Delete threshold
- `GET /api/ntfy-settings/:user_id` — Get NTFY settings
- `POST /api/ntfy-settings` — Create NTFY settings
- `PUT /api/ntfy-settings/:id` — Update NTFY settings
- `DELETE /api/ntfy-settings/:id` — Delete NTFY settings
- `GET /api/smtp-settings/:user_id` — Get SMTP settings
- `POST /api/smtp-settings` — Create SMTP settings
- `PUT /api/smtp-settings/:id` — Update SMTP settings
- `DELETE /api/smtp-settings/:id` — Delete SMTP settings

For full details and request/response schemas, see the interactive OpenAPI docs at [`/docs`](http://localhost:4000/docs).

---

To start your Phoenix server:

  * Run `mix setup` to install and setup dependencies
  * Copy `.env.example` to `.env` and configure your environment variables: `cp .env.example .env`
  * Load environment variables: `source .env` (or use your preferred method)
  * Start Phoenix endpoint with `mix phx.server` or inside IEx with `iex -S mix phx.server`

Now you can visit [`localhost:4000`](http://localhost:4000) from your browser.

## Database Configuration

This application supports both SQLite and PostgreSQL:

  * Default: SQLite (no setup required)
  * To configure: Set `DB_ADAPTER` to either `sqlite` or `postgres` in your environment
  * Database location:
    * SQLite: `DATABASE_URL=sqlite3:/path/to/your.db` (defaults to `~/.silmataivas.db`)
    * PostgreSQL: `DATABASE_URL=postgres://user:password@host/database`

Ready to run in production? Please [check our deployment guides](https://hexdocs.pm/phoenix/deployment.html).

## Learn more

  * Official website: https://www.phoenixframework.org/
  * Guides: https://hexdocs.pm/phoenix/overview.html
  * Docs: https://hexdocs.pm/phoenix
  * Forum: https://elixirforum.com/c/phoenix-forum
  * Source: https://github.com/phoenixframework/phoenix


## Installation

### Using Docker (Recommended)

The easiest way to run the application is with Docker:

```bash
# Clone the repository
git clone https://github.com/yourusername/silmataivas.git
cd silmataivas

# Run the application with the helper script (creates .env file if needed)
./docker-run.sh
```

By default, the application uses SQLite. To use PostgreSQL instead:

```bash
# Set the environment variable before running
DB_ADAPTER=postgres ./docker-run.sh
```

### Manual Installation

For a manual installation on Arch Linux:

```bash
sudo pacman -Syu
sudo pacman -S git base-devel elixir cmake file erlang
sudo pacman -S postgresql
sudo -iu postgres initdb -D /var/lib/postgres/data
sudo systemctl enable --now postgresql.service
sudo useradd -r -s /bin/false -m -d /var/lib/silmataivas -U silmataivas
sudo mkdir -p /opt/silmataivas
sudo chown -R silmataivas:silmataivas /opt/silmataivas
sudo mkdir -p /etc/silmataivas
sudo touch /etc/silmataivas/env
sudo chmod 0600 /etc/silmataivas/env
sudo chown -R silmataivas:silmataivas /etc/silmataivas
sudo touch /etc/systemd/system/silmataivas.service
sudo pacman -S nginx
sudo mkdir -p /etc/nginx/sites-{available,enabled}
sudo pacman -S certbot certbot-nginx
sudo mkdir -p /var/lib/letsencrypt/
sudo touch /etc/nginx/sites-available/silmataivas.nginx
sudo ln -s /etc/nginx/sites-available/silmataivas.nginx /etc/nginx/sites-enabled/silmataivas.nginx
sudo systemctl enable silmataivas.service
```

## CI/CD Pipeline

Silmataivas uses GitLab CI/CD for automated testing, building, and deployment. The pipeline follows the GitHub flow branching strategy and uses semantic versioning.

### Branching Strategy

We follow the GitHub flow branching strategy:

1. Create feature branches from `main`
2. Make changes and commit using conventional commit format
3. Open a merge request to `main`
4. After review and approval, merge to `main`
5. Automated release process triggers on `main` branch

### Conventional Commits

All commits should follow the [Conventional Commits](https://www.conventionalcommits.org/) format:

```
<type>[optional scope]: <description>

[optional body]

[optional footer(s)]
```

Types:
- `feat`: A new feature (minor version bump)
- `fix`: A bug fix (patch version bump)
- `docs`: Documentation changes
- `style`: Code style changes (formatting, etc.)
- `refactor`: Code changes that neither fix bugs nor add features
- `perf`: Performance improvements
- `test`: Adding or updating tests
- `chore`: Maintenance tasks

Breaking changes:
- Add `BREAKING CHANGE:` in the commit body
- Or use `!` after the type/scope: `feat!: breaking change`

Examples:
```
feat: add user authentication
fix: correct timezone handling in weather data
docs: update deployment instructions
refactor: optimize location lookup
feat(api): add rate limiting
fix!: change API response format
```

### CI/CD Pipeline Stages

The GitLab CI/CD pipeline consists of the following stages:

1. **Lint**: Code quality checks
   - Elixir format check
   - Hadolint for Dockerfile

2. **Test**: Run tests
   - Unit tests
   - Integration tests

3. **Build**: Build Docker image
   - Uses Kaniko to build the image
   - Pushes to GitLab registry with branch tag

4. **Validate**: (Only for feature branches)
   - Runs the Docker container
   - Checks the health endpoint

5. **Release**: (Only on main branch)
   - Uses semantic-release to determine version
   - Creates Git tag
   - Generates changelog
   - Pushes Docker image with version tag
   - Pushes Docker image with latest tag

### Versioning

We use [semantic-release](https://semantic-release.gitbook.io/semantic-release/) to automate version management and package publishing based on [Semantic Versioning 2.0](https://semver.org/) rules:

- **MAJOR** version when making incompatible API changes (breaking changes)
- **MINOR** version when adding functionality in a backward compatible manner
- **PATCH** version when making backward compatible bug fixes

The version is automatically determined from conventional commit messages.

### Required GitLab CI/CD Variables

The following variables need to be set in GitLab CI/CD settings:

- `CI_REGISTRY`, `CI_REGISTRY_USER`, `CI_REGISTRY_PASSWORD`: Provided by GitLab
- `OPENWEATHERMAP_API_KEY`: For testing
- `SECRET_KEY_BASE`: For Phoenix app
- `AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`: For email functionality
- `STAGING_SERVER`, `STAGING_USER`, `STAGING_DEPLOY_KEY`: For staging deployment
- `PRODUCTION_SERVER`, `PRODUCTION_USER`, `PRODUCTION_DEPLOY_KEY`: For production deployment

## Silmataivas Project Guidelines

### Build & Run Commands

- Setup: `mix setup` (installs deps, creates DB, runs migrations)
- Run server: `mix phx.server` or `iex -S mix phx.server` (interactive)
- Format code: `mix format`
- Lint: `mix dialyzer` (static analysis)
- Test: `mix test`
- Single test: `mix test test/path/to/test_file.exs:line_number`
- Create migration: `mix ecto.gen.migration name_of_migration`
- Run migrations: `mix ecto.migrate`

### Code Style Guidelines

- Format code using `mix format` (enforces Elixir community standards)
- File naming: snake_case for files and modules match paths
- Modules: PascalCase with nested namespaces matching directory structure
- Functions: snake_case, use pipes (|>) for multi-step operations
- Variables/atoms: snake_case, descriptive names
- Schema fields: snake_case, explicit types
- Documentation: use @moduledoc and @doc for all public modules/functions
- Error handling: use {:ok, result} | {:error, reason} pattern for operations
- Testing: write tests for all modules, use descriptive test names
- Imports: group Elixir standard lib, Phoenix, and other dependencies