### Fetch All Objects with `all/2` and Pagination

Source: https://hexdocs.pm/ex_nylas

Use `all/2` to retrieve all objects of a given type, with the SDK handling pagination. Configure request throttling with `delay` and process pages as they arrive using `send_to`.

```elixir
conn = %ExNylas.Connection{api_key: "1234", grant_id: "1234"}

# Accumulate results in memory and return them when paging is complete
{:ok, []} = ExNylas.Messages.all(conn, query: [any_email: "nick@example.com", fields: "include_headers"])

# Send results to a handler as each page is received
{:ok, []} = ExNylas.Messages.all(conn, send_to: &IO.inspect/1, delay: 3_000, query: [any_email: "nick@example.com", fields: "include_headers"])

# Or handle paging on your own
{:ok, first_page} = ExNylas.Messages.list(conn, limit: 50)
{:ok, second_page} = ExNylas.Messages.list(conn, limit: 50, page_token: first_page.next_cursor)
```

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

### Initialize ExNylas Connection

Source: https://hexdocs.pm/ex_nylas

Create a connection struct with your Nylas API credentials and server details. The `access_token` is optional if using `grant_id` and `api_key`. Additional options are passed to the Req HTTP client.

```elixir
conn = 
%ExNylas.Connection{
 client_id: "1234",
 api_key: "1234",
 grant_id: "1234",
 access_token: "1234", # Omited if using `grant_id` + `api_key`
 api_server: "https://api.us.nylas.com",
 options: [], # Passed to Req (HTTP client)
 telemetry: true # Enables telemetry and the default telemetry logger (defaults to `false`)
}
```

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

### Configure Req HTTP Client Options

Source: https://hexdocs.pm/ex_nylas

Customize the behavior of the underlying Req HTTP client by providing options in the `ExNylas.Connection` struct. Do not override `decode_body` as the SDK relies on Req for response decoding.

```elixir
[
  retry: :safe_transient,
  cache: false,
  compress_body: false,
  compressed: true, # ask server to return compressed responses
  receive_timeout: 15_000, # socket receive timeout
  pool_timeout: 5000 # pool checkout timeout
]
```

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

### Pass Queries and Filters as Maps or Keyword Lists

Source: https://hexdocs.pm/ex_nylas

When making API requests that support queries or filters, you can pass them as a map or a keyword list.

```elixir
conn = %ExNylas.Connection{api_key: "1234", grant_id: "1234"}
{:ok, threads} = ExNylas.Threads.list(conn, limit: 5)
{:ok, threads} = ExNylas.Threads.list(conn, %{limit: 5})
```

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

### Handle API Responses with Ok/Error Tuples or Exceptions

Source: https://hexdocs.pm/ex_nylas

ExNylas functions can return an `{:ok, result}` or `{:error, reason}` tuple, or raise an exception if using the `!/1` variant.

```elixir
conn = %ExNylas.Connection{api_key: "1234", grant_id: "1234"}

# Returns {:ok, result} or {:error, reason}
{:ok, message} = ExNylas.Messages.first(conn)

# Returns result or raises an exception
message = ExNylas.Messages.first!(conn)
```

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

### Validate Data Before Sending with `build/1`

Source: https://hexdocs.pm/ex_nylas

Optionally use `build/1` to validate data against the Nylas API schema before sending it via `create/update` functions. This leverages Ecto for validation and returns a changeset on error. This functionality is experimental.

```elixir
 {:ok, folder} = ExNylas.Folders.build(%{name: "Hello World"})

# This will return an error because 'display_name' is not part of the struct
ExNylas.Folders.build(%{display_name: "Hello Error"})

> {:error,
#Ecto.Changeset<action: :build,
changes: %{},
errors: [name: {"can't be blank", [validation: :required] }],
data: #ExNylas.Folder.Build<>
valid?: false
>}
```

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

### Add ExNylas to Project Dependencies

Source: https://hexdocs.pm/ex_nylas

Add the ExNylas dependency to your Elixir project's `deps` function in `mix.exs`.

```elixir
def deps do
  [
    {:ex_nylas, "~> 0.10.1"}
  ]
end
```

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