shrike 0.1.1

// Code generated by lexgen. DO NOT EDIT.

/// RichtextFacetByteSlice — Specifies the sub-string range a facet feature applies to. Start index is inclusive, end index is exclusive. Indices are zero-indexed, counting bytes of the UTF-8 encoded text. NOTE: some languages, like Javascript, use UTF-16 or Unicode codepoints for string slice indexing; in these languages, convert to byte arrays before working with facets.
#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct RichtextFacetByteSlice {
    pub byte_end: i64,
    pub byte_start: i64,
    /// Extra fields not defined in the schema (JSON).
    #[serde(flatten)]
    pub extra: std::collections::HashMap<String, serde_json::Value>,
    /// Extra fields not defined in the schema (CBOR).
    #[serde(skip)]
    pub extra_cbor: Vec<(String, Vec<u8>)>,
}

impl RichtextFacetByteSlice {
    pub fn to_cbor(&self) -> Result<Vec<u8>, crate::cbor::CborError> {
        let mut buf = Vec::new();
        self.encode_cbor(&mut buf)?;
        Ok(buf)
    }

    pub fn encode_cbor(&self, buf: &mut Vec<u8>) -> Result<(), crate::cbor::CborError> {
        if self.extra_cbor.is_empty() {
            // Fast path: no extra fields to merge.
            let count = 2u64;
            crate::cbor::Encoder::new(&mut *buf).encode_map_header(count)?;
            crate::cbor::Encoder::new(&mut *buf).encode_text("byteEnd")?;
            crate::cbor::Encoder::new(&mut *buf).encode_i64(self.byte_end)?;
            crate::cbor::Encoder::new(&mut *buf).encode_text("byteStart")?;
            crate::cbor::Encoder::new(&mut *buf).encode_i64(self.byte_start)?;
        } else {
            // Slow path: merge known fields with extra_cbor, sort, encode.
            let mut pairs: Vec<(&str, Vec<u8>)> = Vec::new();
            {
                let mut vbuf = Vec::new();
                crate::cbor::Encoder::new(&mut vbuf).encode_i64(self.byte_end)?;
                pairs.push(("byteEnd", vbuf));
            }
            {
                let mut vbuf = Vec::new();
                crate::cbor::Encoder::new(&mut vbuf).encode_i64(self.byte_start)?;
                pairs.push(("byteStart", vbuf));
            }
            for (k, v) in &self.extra_cbor {
                pairs.push((k.as_str(), v.clone()));
            }
            pairs.sort_by(|a, b| crate::cbor::cbor_key_cmp(a.0, b.0));
            crate::cbor::Encoder::new(&mut *buf).encode_map_header(pairs.len() as u64)?;
            for (k, v) in &pairs {
                crate::cbor::Encoder::new(&mut *buf).encode_text(k)?;
                buf.extend_from_slice(v);
            }
        }
        Ok(())
    }

    pub fn from_cbor(data: &[u8]) -> Result<Self, crate::cbor::CborError> {
        let mut decoder = crate::cbor::Decoder::new(data);
        let result = Self::decode_cbor(&mut decoder)?;
        if !decoder.is_empty() {
            return Err(crate::cbor::CborError::InvalidCbor("trailing data".into()));
        }
        Ok(result)
    }

    pub fn decode_cbor(decoder: &mut crate::cbor::Decoder) -> Result<Self, crate::cbor::CborError> {
        let val = decoder.decode()?;
        let entries = match val {
            crate::cbor::Value::Map(entries) => entries,
            _ => return Err(crate::cbor::CborError::InvalidCbor("expected map".into())),
        };

        let mut field_byte_end: Option<i64> = None;
        let mut field_byte_start: Option<i64> = None;
        let mut extra_cbor: Vec<(String, Vec<u8>)> = Vec::new();

        for (key, value) in entries {
            match key {
                "byteEnd" => match value {
                    crate::cbor::Value::Unsigned(n) => {
                        field_byte_end = Some(n as i64);
                    }
                    crate::cbor::Value::Signed(n) => {
                        field_byte_end = Some(n);
                    }
                    _ => {
                        return Err(crate::cbor::CborError::InvalidCbor(
                            "expected integer".into(),
                        ));
                    }
                },
                "byteStart" => match value {
                    crate::cbor::Value::Unsigned(n) => {
                        field_byte_start = Some(n as i64);
                    }
                    crate::cbor::Value::Signed(n) => {
                        field_byte_start = Some(n);
                    }
                    _ => {
                        return Err(crate::cbor::CborError::InvalidCbor(
                            "expected integer".into(),
                        ));
                    }
                },
                _ => {
                    let raw = crate::cbor::encode_value(&value)?;
                    extra_cbor.push((key.to_string(), raw));
                }
            }
        }

        Ok(RichtextFacetByteSlice {
            byte_end: field_byte_end.ok_or_else(|| {
                crate::cbor::CborError::InvalidCbor("missing required field 'byteEnd'".into())
            })?,
            byte_start: field_byte_start.ok_or_else(|| {
                crate::cbor::CborError::InvalidCbor("missing required field 'byteStart'".into())
            })?,
            extra: std::collections::HashMap::new(),
            extra_cbor,
        })
    }
}

/// RichtextFacetLink — Facet feature for a URL. The text URL may have been simplified or truncated, but the facet reference should be a complete URL.
#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct RichtextFacetLink {
    pub uri: String,
    /// Extra fields not defined in the schema (JSON).
    #[serde(flatten)]
    pub extra: std::collections::HashMap<String, serde_json::Value>,
    /// Extra fields not defined in the schema (CBOR).
    #[serde(skip)]
    pub extra_cbor: Vec<(String, Vec<u8>)>,
}

impl RichtextFacetLink {
    pub fn to_cbor(&self) -> Result<Vec<u8>, crate::cbor::CborError> {
        let mut buf = Vec::new();
        self.encode_cbor(&mut buf)?;
        Ok(buf)
    }

    pub fn encode_cbor(&self, buf: &mut Vec<u8>) -> Result<(), crate::cbor::CborError> {
        if self.extra_cbor.is_empty() {
            // Fast path: no extra fields to merge.
            let count = 1u64;
            crate::cbor::Encoder::new(&mut *buf).encode_map_header(count)?;
            crate::cbor::Encoder::new(&mut *buf).encode_text("uri")?;
            crate::cbor::Encoder::new(&mut *buf).encode_text(&self.uri)?;
        } else {
            // Slow path: merge known fields with extra_cbor, sort, encode.
            let mut pairs: Vec<(&str, Vec<u8>)> = Vec::new();
            {
                let mut vbuf = Vec::new();
                crate::cbor::Encoder::new(&mut vbuf).encode_text(&self.uri)?;
                pairs.push(("uri", vbuf));
            }
            for (k, v) in &self.extra_cbor {
                pairs.push((k.as_str(), v.clone()));
            }
            pairs.sort_by(|a, b| crate::cbor::cbor_key_cmp(a.0, b.0));
            crate::cbor::Encoder::new(&mut *buf).encode_map_header(pairs.len() as u64)?;
            for (k, v) in &pairs {
                crate::cbor::Encoder::new(&mut *buf).encode_text(k)?;
                buf.extend_from_slice(v);
            }
        }
        Ok(())
    }

    pub fn from_cbor(data: &[u8]) -> Result<Self, crate::cbor::CborError> {
        let mut decoder = crate::cbor::Decoder::new(data);
        let result = Self::decode_cbor(&mut decoder)?;
        if !decoder.is_empty() {
            return Err(crate::cbor::CborError::InvalidCbor("trailing data".into()));
        }
        Ok(result)
    }

    pub fn decode_cbor(decoder: &mut crate::cbor::Decoder) -> Result<Self, crate::cbor::CborError> {
        let val = decoder.decode()?;
        let entries = match val {
            crate::cbor::Value::Map(entries) => entries,
            _ => return Err(crate::cbor::CborError::InvalidCbor("expected map".into())),
        };

        let mut field_uri: Option<String> = None;
        let mut extra_cbor: Vec<(String, Vec<u8>)> = Vec::new();

        for (key, value) in entries {
            match key {
                "uri" => {
                    if let crate::cbor::Value::Text(s) = value {
                        field_uri = Some(s.to_string());
                    } else {
                        return Err(crate::cbor::CborError::InvalidCbor("expected text".into()));
                    }
                }
                _ => {
                    let raw = crate::cbor::encode_value(&value)?;
                    extra_cbor.push((key.to_string(), raw));
                }
            }
        }

        Ok(RichtextFacetLink {
            uri: field_uri.ok_or_else(|| {
                crate::cbor::CborError::InvalidCbor("missing required field 'uri'".into())
            })?,
            extra: std::collections::HashMap::new(),
            extra_cbor,
        })
    }
}

/// RichtextFacet — Annotation of a sub-string within rich text.
#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct RichtextFacet {
    #[serde(default, skip_serializing_if = "Vec::is_empty")]
    pub features: Vec<RichtextFacetFeaturesUnion>,
    pub index: RichtextFacetByteSlice,
    /// Extra fields not defined in the schema (JSON).
    #[serde(flatten)]
    pub extra: std::collections::HashMap<String, serde_json::Value>,
    /// Extra fields not defined in the schema (CBOR).
    #[serde(skip)]
    pub extra_cbor: Vec<(String, Vec<u8>)>,
}

/// RichtextFacetFeaturesUnion is a union type.
#[derive(Debug, Clone)]
pub enum RichtextFacetFeaturesUnion {
    RichtextFacetMention(Box<RichtextFacetMention>),
    RichtextFacetLink(Box<RichtextFacetLink>),
    RichtextFacetTag(Box<RichtextFacetTag>),
    Unknown(crate::api::UnknownUnionVariant),
}

impl serde::Serialize for RichtextFacetFeaturesUnion {
    fn serialize<S: serde::Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
        match self {
            RichtextFacetFeaturesUnion::RichtextFacetMention(inner) => {
                let mut map =
                    serde_json::to_value(inner.as_ref()).map_err(serde::ser::Error::custom)?;
                if let serde_json::Value::Object(ref mut m) = map {
                    m.insert(
                        "$type".to_string(),
                        serde_json::Value::String("app.bsky.richtext.facet#mention".to_string()),
                    );
                }
                map.serialize(serializer)
            }
            RichtextFacetFeaturesUnion::RichtextFacetLink(inner) => {
                let mut map =
                    serde_json::to_value(inner.as_ref()).map_err(serde::ser::Error::custom)?;
                if let serde_json::Value::Object(ref mut m) = map {
                    m.insert(
                        "$type".to_string(),
                        serde_json::Value::String("app.bsky.richtext.facet#link".to_string()),
                    );
                }
                map.serialize(serializer)
            }
            RichtextFacetFeaturesUnion::RichtextFacetTag(inner) => {
                let mut map =
                    serde_json::to_value(inner.as_ref()).map_err(serde::ser::Error::custom)?;
                if let serde_json::Value::Object(ref mut m) = map {
                    m.insert(
                        "$type".to_string(),
                        serde_json::Value::String("app.bsky.richtext.facet#tag".to_string()),
                    );
                }
                map.serialize(serializer)
            }
            RichtextFacetFeaturesUnion::Unknown(v) => {
                if let Some(ref j) = v.json {
                    j.serialize(serializer)
                } else {
                    Err(serde::ser::Error::custom(
                        "no JSON data for unknown union variant",
                    ))
                }
            }
        }
    }
}

impl<'de> serde::Deserialize<'de> for RichtextFacetFeaturesUnion {
    fn deserialize<D: serde::Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
        let value = serde_json::Value::deserialize(deserializer)?;
        let type_str = value
            .get("$type")
            .and_then(|v| v.as_str())
            .unwrap_or_default();
        match type_str {
            "app.bsky.richtext.facet#mention" => {
                let inner: RichtextFacetMention =
                    serde_json::from_value(value).map_err(serde::de::Error::custom)?;
                Ok(RichtextFacetFeaturesUnion::RichtextFacetMention(Box::new(
                    inner,
                )))
            }
            "app.bsky.richtext.facet#link" => {
                let inner: RichtextFacetLink =
                    serde_json::from_value(value).map_err(serde::de::Error::custom)?;
                Ok(RichtextFacetFeaturesUnion::RichtextFacetLink(Box::new(
                    inner,
                )))
            }
            "app.bsky.richtext.facet#tag" => {
                let inner: RichtextFacetTag =
                    serde_json::from_value(value).map_err(serde::de::Error::custom)?;
                Ok(RichtextFacetFeaturesUnion::RichtextFacetTag(Box::new(
                    inner,
                )))
            }
            _ => Ok(RichtextFacetFeaturesUnion::Unknown(
                crate::api::UnknownUnionVariant {
                    r#type: type_str.to_string(),
                    json: Some(value),
                    cbor: None,
                },
            )),
        }
    }
}

impl RichtextFacetFeaturesUnion {
    pub fn to_cbor(&self) -> Result<Vec<u8>, crate::cbor::CborError> {
        let mut buf = Vec::new();
        self.encode_cbor(&mut buf)?;
        Ok(buf)
    }

    pub fn encode_cbor(&self, buf: &mut Vec<u8>) -> Result<(), crate::cbor::CborError> {
        match self {
            RichtextFacetFeaturesUnion::RichtextFacetMention(inner) => inner.encode_cbor(buf),
            RichtextFacetFeaturesUnion::RichtextFacetLink(inner) => inner.encode_cbor(buf),
            RichtextFacetFeaturesUnion::RichtextFacetTag(inner) => inner.encode_cbor(buf),
            RichtextFacetFeaturesUnion::Unknown(v) => {
                if let Some(ref data) = v.cbor {
                    buf.extend_from_slice(data);
                    Ok(())
                } else {
                    Err(crate::cbor::CborError::InvalidCbor(
                        "no CBOR data for unknown union variant".into(),
                    ))
                }
            }
        }
    }

    pub fn from_cbor(data: &[u8]) -> Result<Self, crate::cbor::CborError> {
        let mut decoder = crate::cbor::Decoder::new(data);
        let result = Self::decode_cbor(&mut decoder)?;
        if !decoder.is_empty() {
            return Err(crate::cbor::CborError::InvalidCbor("trailing data".into()));
        }
        Ok(result)
    }

    pub fn decode_cbor(decoder: &mut crate::cbor::Decoder) -> Result<Self, crate::cbor::CborError> {
        // Save position, decode the value, look for $type key.
        let start = decoder.position();
        let val = decoder.decode()?;
        let end = decoder.position();
        let raw = &decoder.raw_input()[start..end];
        let entries = match val {
            crate::cbor::Value::Map(entries) => entries,
            _ => {
                return Err(crate::cbor::CborError::InvalidCbor(
                    "expected map for union".into(),
                ));
            }
        };
        let type_str = entries
            .iter()
            .find(|(k, _)| *k == "$type")
            .and_then(|(_, v)| match v {
                crate::cbor::Value::Text(s) => Some(*s),
                _ => None,
            })
            .unwrap_or_default();
        match type_str {
            "app.bsky.richtext.facet#mention" => {
                let mut dec = crate::cbor::Decoder::new(raw);
                let inner = RichtextFacetMention::decode_cbor(&mut dec)?;
                Ok(RichtextFacetFeaturesUnion::RichtextFacetMention(Box::new(
                    inner,
                )))
            }
            "app.bsky.richtext.facet#link" => {
                let mut dec = crate::cbor::Decoder::new(raw);
                let inner = RichtextFacetLink::decode_cbor(&mut dec)?;
                Ok(RichtextFacetFeaturesUnion::RichtextFacetLink(Box::new(
                    inner,
                )))
            }
            "app.bsky.richtext.facet#tag" => {
                let mut dec = crate::cbor::Decoder::new(raw);
                let inner = RichtextFacetTag::decode_cbor(&mut dec)?;
                Ok(RichtextFacetFeaturesUnion::RichtextFacetTag(Box::new(
                    inner,
                )))
            }
            _ => Ok(RichtextFacetFeaturesUnion::Unknown(
                crate::api::UnknownUnionVariant {
                    r#type: type_str.to_string(),
                    json: None,
                    cbor: Some(raw.to_vec()),
                },
            )),
        }
    }
}

impl RichtextFacet {
    pub fn to_cbor(&self) -> Result<Vec<u8>, crate::cbor::CborError> {
        let mut buf = Vec::new();
        self.encode_cbor(&mut buf)?;
        Ok(buf)
    }

    pub fn encode_cbor(&self, buf: &mut Vec<u8>) -> Result<(), crate::cbor::CborError> {
        if self.extra_cbor.is_empty() {
            // Fast path: no extra fields to merge.
            let count = 2u64;
            crate::cbor::Encoder::new(&mut *buf).encode_map_header(count)?;
            crate::cbor::Encoder::new(&mut *buf).encode_text("index")?;
            self.index.encode_cbor(buf)?;
            crate::cbor::Encoder::new(&mut *buf).encode_text("features")?;
            crate::cbor::Encoder::new(&mut *buf).encode_array_header(self.features.len() as u64)?;
            for item in &self.features {
                item.encode_cbor(buf)?;
            }
        } else {
            // Slow path: merge known fields with extra_cbor, sort, encode.
            let mut pairs: Vec<(&str, Vec<u8>)> = Vec::new();
            {
                let mut vbuf = Vec::new();
                self.index.encode_cbor(&mut vbuf)?;
                pairs.push(("index", vbuf));
            }
            {
                let mut vbuf = Vec::new();
                crate::cbor::Encoder::new(&mut vbuf)
                    .encode_array_header(self.features.len() as u64)?;
                for item in &self.features {
                    item.encode_cbor(&mut vbuf)?;
                }
                pairs.push(("features", vbuf));
            }
            for (k, v) in &self.extra_cbor {
                pairs.push((k.as_str(), v.clone()));
            }
            pairs.sort_by(|a, b| crate::cbor::cbor_key_cmp(a.0, b.0));
            crate::cbor::Encoder::new(&mut *buf).encode_map_header(pairs.len() as u64)?;
            for (k, v) in &pairs {
                crate::cbor::Encoder::new(&mut *buf).encode_text(k)?;
                buf.extend_from_slice(v);
            }
        }
        Ok(())
    }

    pub fn from_cbor(data: &[u8]) -> Result<Self, crate::cbor::CborError> {
        let mut decoder = crate::cbor::Decoder::new(data);
        let result = Self::decode_cbor(&mut decoder)?;
        if !decoder.is_empty() {
            return Err(crate::cbor::CborError::InvalidCbor("trailing data".into()));
        }
        Ok(result)
    }

    pub fn decode_cbor(decoder: &mut crate::cbor::Decoder) -> Result<Self, crate::cbor::CborError> {
        let val = decoder.decode()?;
        let entries = match val {
            crate::cbor::Value::Map(entries) => entries,
            _ => return Err(crate::cbor::CborError::InvalidCbor("expected map".into())),
        };

        let mut field_index: Option<RichtextFacetByteSlice> = None;
        let mut field_features: Vec<RichtextFacetFeaturesUnion> = Vec::new();
        let mut extra_cbor: Vec<(String, Vec<u8>)> = Vec::new();

        for (key, value) in entries {
            match key {
                "index" => {
                    let raw = crate::cbor::encode_value(&value)?;
                    let mut dec = crate::cbor::Decoder::new(&raw);
                    field_index = Some(RichtextFacetByteSlice::decode_cbor(&mut dec)?);
                }
                "features" => {
                    if let crate::cbor::Value::Array(items) = value {
                        for item in items {
                            let raw = crate::cbor::encode_value(&item)?;
                            let mut dec = crate::cbor::Decoder::new(&raw);
                            field_features.push(RichtextFacetFeaturesUnion::decode_cbor(&mut dec)?);
                        }
                    } else {
                        return Err(crate::cbor::CborError::InvalidCbor("expected array".into()));
                    }
                }
                _ => {
                    let raw = crate::cbor::encode_value(&value)?;
                    extra_cbor.push((key.to_string(), raw));
                }
            }
        }

        Ok(RichtextFacet {
            index: field_index.ok_or_else(|| {
                crate::cbor::CborError::InvalidCbor("missing required field 'index'".into())
            })?,
            features: field_features,
            extra: std::collections::HashMap::new(),
            extra_cbor,
        })
    }
}

/// RichtextFacetMention — Facet feature for mention of another account. The text is usually a handle, including a '@' prefix, but the facet reference is a DID.
#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct RichtextFacetMention {
    pub did: crate::syntax::Did,
    /// Extra fields not defined in the schema (JSON).
    #[serde(flatten)]
    pub extra: std::collections::HashMap<String, serde_json::Value>,
    /// Extra fields not defined in the schema (CBOR).
    #[serde(skip)]
    pub extra_cbor: Vec<(String, Vec<u8>)>,
}

impl RichtextFacetMention {
    pub fn to_cbor(&self) -> Result<Vec<u8>, crate::cbor::CborError> {
        let mut buf = Vec::new();
        self.encode_cbor(&mut buf)?;
        Ok(buf)
    }

    pub fn encode_cbor(&self, buf: &mut Vec<u8>) -> Result<(), crate::cbor::CborError> {
        if self.extra_cbor.is_empty() {
            // Fast path: no extra fields to merge.
            let count = 1u64;
            crate::cbor::Encoder::new(&mut *buf).encode_map_header(count)?;
            crate::cbor::Encoder::new(&mut *buf).encode_text("did")?;
            crate::cbor::Encoder::new(&mut *buf).encode_text(self.did.as_str())?;
        } else {
            // Slow path: merge known fields with extra_cbor, sort, encode.
            let mut pairs: Vec<(&str, Vec<u8>)> = Vec::new();
            {
                let mut vbuf = Vec::new();
                crate::cbor::Encoder::new(&mut vbuf).encode_text(self.did.as_str())?;
                pairs.push(("did", vbuf));
            }
            for (k, v) in &self.extra_cbor {
                pairs.push((k.as_str(), v.clone()));
            }
            pairs.sort_by(|a, b| crate::cbor::cbor_key_cmp(a.0, b.0));
            crate::cbor::Encoder::new(&mut *buf).encode_map_header(pairs.len() as u64)?;
            for (k, v) in &pairs {
                crate::cbor::Encoder::new(&mut *buf).encode_text(k)?;
                buf.extend_from_slice(v);
            }
        }
        Ok(())
    }

    pub fn from_cbor(data: &[u8]) -> Result<Self, crate::cbor::CborError> {
        let mut decoder = crate::cbor::Decoder::new(data);
        let result = Self::decode_cbor(&mut decoder)?;
        if !decoder.is_empty() {
            return Err(crate::cbor::CborError::InvalidCbor("trailing data".into()));
        }
        Ok(result)
    }

    pub fn decode_cbor(decoder: &mut crate::cbor::Decoder) -> Result<Self, crate::cbor::CborError> {
        let val = decoder.decode()?;
        let entries = match val {
            crate::cbor::Value::Map(entries) => entries,
            _ => return Err(crate::cbor::CborError::InvalidCbor("expected map".into())),
        };

        let mut field_did: Option<crate::syntax::Did> = None;
        let mut extra_cbor: Vec<(String, Vec<u8>)> = Vec::new();

        for (key, value) in entries {
            match key {
                "did" => {
                    if let crate::cbor::Value::Text(s) = value {
                        field_did = Some(
                            crate::syntax::Did::try_from(s)
                                .map_err(|e| crate::cbor::CborError::InvalidCbor(e.to_string()))?,
                        );
                    } else {
                        return Err(crate::cbor::CborError::InvalidCbor("expected text".into()));
                    }
                }
                _ => {
                    let raw = crate::cbor::encode_value(&value)?;
                    extra_cbor.push((key.to_string(), raw));
                }
            }
        }

        Ok(RichtextFacetMention {
            did: field_did.ok_or_else(|| {
                crate::cbor::CborError::InvalidCbor("missing required field 'did'".into())
            })?,
            extra: std::collections::HashMap::new(),
            extra_cbor,
        })
    }
}

/// RichtextFacetTag — Facet feature for a hashtag. The text usually includes a '#' prefix, but the facet reference should not (except in the case of 'double hash tags').
#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct RichtextFacetTag {
    pub tag: String,
    /// Extra fields not defined in the schema (JSON).
    #[serde(flatten)]
    pub extra: std::collections::HashMap<String, serde_json::Value>,
    /// Extra fields not defined in the schema (CBOR).
    #[serde(skip)]
    pub extra_cbor: Vec<(String, Vec<u8>)>,
}

impl RichtextFacetTag {
    pub fn to_cbor(&self) -> Result<Vec<u8>, crate::cbor::CborError> {
        let mut buf = Vec::new();
        self.encode_cbor(&mut buf)?;
        Ok(buf)
    }

    pub fn encode_cbor(&self, buf: &mut Vec<u8>) -> Result<(), crate::cbor::CborError> {
        if self.extra_cbor.is_empty() {
            // Fast path: no extra fields to merge.
            let count = 1u64;
            crate::cbor::Encoder::new(&mut *buf).encode_map_header(count)?;
            crate::cbor::Encoder::new(&mut *buf).encode_text("tag")?;
            crate::cbor::Encoder::new(&mut *buf).encode_text(&self.tag)?;
        } else {
            // Slow path: merge known fields with extra_cbor, sort, encode.
            let mut pairs: Vec<(&str, Vec<u8>)> = Vec::new();
            {
                let mut vbuf = Vec::new();
                crate::cbor::Encoder::new(&mut vbuf).encode_text(&self.tag)?;
                pairs.push(("tag", vbuf));
            }
            for (k, v) in &self.extra_cbor {
                pairs.push((k.as_str(), v.clone()));
            }
            pairs.sort_by(|a, b| crate::cbor::cbor_key_cmp(a.0, b.0));
            crate::cbor::Encoder::new(&mut *buf).encode_map_header(pairs.len() as u64)?;
            for (k, v) in &pairs {
                crate::cbor::Encoder::new(&mut *buf).encode_text(k)?;
                buf.extend_from_slice(v);
            }
        }
        Ok(())
    }

    pub fn from_cbor(data: &[u8]) -> Result<Self, crate::cbor::CborError> {
        let mut decoder = crate::cbor::Decoder::new(data);
        let result = Self::decode_cbor(&mut decoder)?;
        if !decoder.is_empty() {
            return Err(crate::cbor::CborError::InvalidCbor("trailing data".into()));
        }
        Ok(result)
    }

    pub fn decode_cbor(decoder: &mut crate::cbor::Decoder) -> Result<Self, crate::cbor::CborError> {
        let val = decoder.decode()?;
        let entries = match val {
            crate::cbor::Value::Map(entries) => entries,
            _ => return Err(crate::cbor::CborError::InvalidCbor("expected map".into())),
        };

        let mut field_tag: Option<String> = None;
        let mut extra_cbor: Vec<(String, Vec<u8>)> = Vec::new();

        for (key, value) in entries {
            match key {
                "tag" => {
                    if let crate::cbor::Value::Text(s) = value {
                        field_tag = Some(s.to_string());
                    } else {
                        return Err(crate::cbor::CborError::InvalidCbor("expected text".into()));
                    }
                }
                _ => {
                    let raw = crate::cbor::encode_value(&value)?;
                    extra_cbor.push((key.to_string(), raw));
                }
            }
        }

        Ok(RichtextFacetTag {
            tag: field_tag.ok_or_else(|| {
                crate::cbor::CborError::InvalidCbor("missing required field 'tag'".into())
            })?,
            extra: std::collections::HashMap::new(),
            extra_cbor,
        })
    }
}