1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100

//! Types related to games.

use super::{message::Text, Animation, PhotoSize};
use serde::de::{self, Deserializer, IgnoredAny, MapAccess, Visitor};
use serde::Deserialize;

mod high_score;

pub use high_score::HighScore;

/// Represents a [`Game`].
///
/// [`Game`]: https://core.telegram.org/bots/api#game
#[derive(Debug, PartialEq, Eq, Clone, Hash)]
#[non_exhaustive]
pub struct Game {
    /// The title of the game.
    pub title: String,
    /// The description of the game.
    pub description: String,
    /// The photo of the game.
    pub photo: Vec<PhotoSize>,
    /// The text of the game.
    pub text: Option<Text>,
    /// The animation of the game.
    pub animation: Option<Animation>,
}

const TITLE: &str = "title";
const DESCRIPTION: &str = "description";
const PHOTO: &str = "photo";
const TEXT: &str = "text";
const TEXT_ENTITIES: &str = "text_entities";
const ANIMATION: &str = "animation";

struct GameVisitor;

impl<'v> Visitor<'v> for GameVisitor {
    type Value = Game;

    fn expecting(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
        write!(fmt, "struct Game")
    }

    fn visit_map<V>(self, mut map: V) -> Result<Self::Value, V::Error>
    where
        V: MapAccess<'v>,
    {
        let mut title = None;
        let mut description = None;
        let mut photo = None;
        let mut text = None;
        let mut text_entities = None;
        let mut animation = None;

        while let Some(key) = map.next_key()? {
            match key {
                TITLE => title = Some(map.next_value()?),
                DESCRIPTION => description = Some(map.next_value()?),
                PHOTO => photo = Some(map.next_value()?),
                TEXT => text = Some(map.next_value()?),
                TEXT_ENTITIES => text_entities = Some(map.next_value()?),
                ANIMATION => animation = Some(map.next_value()?),
                _ => {
                    let _ = map.next_value::<IgnoredAny>();
                }
            }
        }

        let text = match text {
            Some(text) => Some(Text {
                value: text,
                entities: text_entities.unwrap_or_default(),
            }),
            None => None,
        };

        Ok(Game {
            title: title.ok_or_else(|| de::Error::missing_field(TITLE))?,
            description: description
                .ok_or_else(|| de::Error::missing_field(DESCRIPTION))?,
            photo: photo.ok_or_else(|| de::Error::missing_field(PHOTO))?,
            text,
            animation,
        })
    }
}

impl<'de> Deserialize<'de> for Game {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: Deserializer<'de>,
    {
        deserializer.deserialize_struct(
            "Game",
            &[TITLE, DESCRIPTION, PHOTO, TEXT, TEXT_ENTITIES, ANIMATION],
            GameVisitor,
        )
    }
}