### Add Domainatrex dependency to mix.exs

Source: https://hexdocs.pm/domainatrex/index.html

Add the Domainatrex dependency to your mix.exs file to install the package.

```elixir
defp deps do
  [
    {:domainatrex, "~> 3.2"},
  ]
```

--------------------------------

### parse/1 examples

Source: https://hexdocs.pm/domainatrex/Domainatrex.html

Shows how to use Domainatrex.parse/1 to split host names into subdomain, domain, and TLD. The function returns {:ok, map} for valid hosts and {:error, reason} otherwise. Domain labels are case-insensitive.

```elixir
iex> Domainatrex.parse("someone.com")
{:ok, %{domain: "someone", subdomain: "", tld: "com"}}

iex> Domainatrex.parse("blog.someone.id.au")
{:ok, %{domain: "someone", subdomain: "blog", tld: "id.au"}}

iex> Domainatrex.parse("zen.s3.amazonaws.com")
{:ok, %{domain: "zen", subdomain: "", tld: "s3.amazonaws.com"}}
```

--------------------------------

### Configure Domainatrex in config.exs

Source: https://hexdocs.pm/domainatrex/index.html

Complete example of customizing Domainatrex behavior in config.exs. It explicitly enables fetching the latest TLD list, sets a custom fallback file, adds a custom suffix, and includes private domains.

```elixir
config :domainatrex,
  # Explicitly allow compile-time HTTP request to fetch the latest list of TLDs (default)
  fetch_latest: true,
  # Download the public suffix list from the official source
  public_suffix_list_url: ~c"https://publicsuffix.org/list/public_suffix_list.dat",
  fallback_local_copy: "priv/my_app_custom_suffix_list.dat",
  # Add custom suffix for com.be
  custom_suffixes: ["com.be"],
  # Include private domains (default)
  include_private: true
```

--------------------------------

### tld?/1 examples

Source: https://hexdocs.pm/domainatrex/Domainatrex.html

Shows how to use Domainatrex.tld?/1 to check if a string is a public suffix (TLD) in the loaded list. Returns true for valid public suffixes and false otherwise.

```elixir
iex> Domainatrex.tld?("com")
true

iex> Domainatrex.tld?("id.au")
true

iex> Domainatrex.tld?("someone.com")
false
```

--------------------------------

### Parse host names and check TLDs with Domainatrex

Source: https://hexdocs.pm/domainatrex/index.html

Shows how to parse host names and check if a string is a top-level domain using Domainatrex. The parse function returns a map with domain, subdomain, and tld fields. The tld? function returns true only for exact TLD matches.

```elixir
iex> Domainatrex.parse("someone.com")
{:ok, %{domain: "someone", subdomain: "", tld: "com"}}

iex> Domainatrex.parse("blog.someone.id.au")
{:ok, %{domain: "someone", subdomain: "blog", tld: "id.au"}}

iex> Domainatrex.tld?("com")
true

iex> Domainatrex.tld?("someone.com")
false
```

--------------------------------

### Domainatrex Functions

Source: https://hexdocs.pm/domainatrex/Domainatrex.html

Functions for parsing host names and checking public suffixes.

```APIDOC
## Domainatrex.parse(url)

### Description
Parses a host name into `{subdomain, domain, tld}` using the public suffix list. Returns `{:ok, %{domain: domain, subdomain: subdomain, tld: tld}}` when the host contains a registrable domain, otherwise returns `{:error, reason}`. Domain labels are treated case-insensitively.

### Method
Function

### Endpoint
`Domainatrex.parse/1`

### Parameters
- **url** (string) - Required - The host name to parse (e.g., `example.co.uk`).

### Request Example
```elixir
Domainatrex.parse("someone.com")
```

### Response
#### Success Response
- **domain** (string) - The registrable domain.
- **subdomain** (string) - The subdomain (may be empty).
- **tld** (string) - The top-level domain (public suffix).

#### Response Example
```elixir
{:ok, %{domain: "someone", subdomain: "", tld: "com"}}
```

### Error Handling
Returns `{:error, reason}` when the host does not contain a registrable domain.
```

```APIDOC
## Domainatrex.tld?(tld)

### Description
Returns `true` when the given string is a public suffix (TLD) in the loaded public suffix list.

### Method
Function

### Endpoint
`Domainatrex.tld?/1`

### Parameters
- **tld** (string) - Required - The string to check as a public suffix.

### Request Example
```elixir
Domainatrex.tld?("com")
```

### Response
#### Success Response
- **boolean** (boolean) - `true` if the string is a public suffix, `false` otherwise.

#### Response Example
```elixir
true
```
```

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