# `ExGram.Model.ChatBoostSourceGiveaway`
[🔗](https://github.com/rockneurotiko/ex_gram/blob/0.64.0/lib/ex_gram.ex#L5828)

The boost was obtained by the creation of a Telegram Premium or a Telegram Star giveaway. This boosts the chat 4 times for the duration of the corresponding Telegram Premium subscription for Telegram Premium giveaways and prize_star_count / 500 times for one year for Telegram Star giveaways.

Check the [documentation of this model on Telegram Bot API](https://core.telegram.org/bots/api#chatboostsourcegiveaway)

- `source`: Source of the boost, always "giveaway”
- `giveaway_message_id`: Identifier of a message in the chat with the giveaway; the message could have been deleted already. May be 0 if the message isn't sent yet.
- `user (optional)`: Optional. User that won the prize in the giveaway if any; for Telegram Premium giveaways only
- `prize_star_count (optional)`: Optional. The number of Telegram Stars to be split between giveaway winners; for Telegram Star giveaways only
- `is_unclaimed (optional)`: Optional. True, if the giveaway was completed, but there was no user to win the prize

# `t`

```elixir
@type t() :: %ExGram.Model.ChatBoostSourceGiveaway{
  giveaway_message_id: integer(),
  is_unclaimed: boolean() | nil,
  prize_star_count: integer() | nil,
  source: String.t(),
  user: ExGram.Model.User.t() | nil
}
```

# `decode_as`

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*Consult [api-reference.md](api-reference.md) for complete listing*