ruma-events 0.26.1

//! `Deserialize` implementation for RoomMessageEventContent and MessageType.

use ruma_serde::from_raw_json_value;
use serde::{de, Deserialize};
use serde_json::value::RawValue as RawJsonValue;

use super::{MessageType, Relation, RoomMessageEventContent};

impl<'de> Deserialize<'de> for RoomMessageEventContent {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: de::Deserializer<'de>,
    {
        let json = Box::<RawJsonValue>::deserialize(deserializer)?;
        let mut deserializer = serde_json::Deserializer::from_str(json.get());
        let relates_to =
            Option::<Relation>::deserialize(&mut deserializer).map_err(de::Error::custom)?;

        Ok(Self { msgtype: from_raw_json_value(&json)?, relates_to })
    }
}

/// Helper struct to determine the msgtype from a `serde_json::value::RawValue`
#[derive(Debug, Deserialize)]
struct MessageTypeDeHelper {
    /// The message type field
    msgtype: String,
}

impl<'de> Deserialize<'de> for MessageType {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: de::Deserializer<'de>,
    {
        let json = Box::<RawJsonValue>::deserialize(deserializer)?;
        let MessageTypeDeHelper { msgtype } = from_raw_json_value(&json)?;

        Ok(match msgtype.as_ref() {
            "m.audio" => Self::Audio(from_raw_json_value(&json)?),
            "m.emote" => Self::Emote(from_raw_json_value(&json)?),
            "m.file" => Self::File(from_raw_json_value(&json)?),
            "m.image" => Self::Image(from_raw_json_value(&json)?),
            "m.location" => Self::Location(from_raw_json_value(&json)?),
            "m.notice" => Self::Notice(from_raw_json_value(&json)?),
            "m.server_notice" => Self::ServerNotice(from_raw_json_value(&json)?),
            "m.text" => Self::Text(from_raw_json_value(&json)?),
            "m.video" => Self::Video(from_raw_json_value(&json)?),
            "m.key.verification.request" => Self::VerificationRequest(from_raw_json_value(&json)?),
            _ => Self::_Custom(from_raw_json_value(&json)?),
        })
    }
}