trust-tasks-rs 0.17.7

Reference Rust library for the Trust Tasks framework — transport-agnostic, JSON-based descriptions of verifiable work between parties.
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//! Generated by `trust-tasks-codegen` — do not edit by hand.
//!
//! Spec slug: `chat/message`. Version: `0.1`.
#[allow(unused_imports)]
use serde::{Deserialize, Serialize};
/// Error types.
pub mod error {
    /// Error from a `TryFrom` or `FromStr` implementation.
    pub struct ConversionError(::std::borrow::Cow<'static, str>);
    impl ::std::error::Error for ConversionError {}
    impl ::std::fmt::Display for ConversionError {
        fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> Result<(), ::std::fmt::Error> {
            ::std::fmt::Display::fmt(&self.0, f)
        }
    }
    impl ::std::fmt::Debug for ConversionError {
        fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> Result<(), ::std::fmt::Error> {
            ::std::fmt::Debug::fmt(&self.0, f)
        }
    }
    impl From<&'static str> for ConversionError {
        fn from(value: &'static str) -> Self {
            Self(value.into())
        }
    }
    impl From<String> for ConversionError {
        fn from(value: String) -> Self {
            Self(value.into())
        }
    }
}
///`AttachmentRef`
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "type": "object",
///  "required": [
///    "id",
///    "mediaType"
///  ],
///  "properties": {
///    "digest": {
///      "description": "OPTIONAL. Multibase-encoded multihash over the attachment bytes, so the reference is itself verifiable and tamper-evident. Taken over the bytes as transferred, not over any JSON wrapper.",
///      "$ref": "#/definitions/DigestMultibase"
///    },
///    "filename": {
///      "description": "OPTIONAL. Suggested filename.",
///      "type": "string",
///      "maxLength": 256
///    },
///    "id": {
///      "description": "Opaque attachment id, resolvable via the bridge's attachment fetch.",
///      "type": "string",
///      "minLength": 1
///    },
///    "mediaType": {
///      "description": "IANA media type (e.g. `image/jpeg`).",
///      "type": "string",
///      "minLength": 1
///    },
///    "sizeBytes": {
///      "description": "OPTIONAL. Size in bytes, if known ahead of fetch.",
///      "type": "integer",
///      "minimum": 0.0
///    }
///  },
///  "additionalProperties": false
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
#[non_exhaustive]
pub struct AttachmentRef {
    ///OPTIONAL. Multibase-encoded multihash over the attachment bytes, so the reference is itself verifiable and tamper-evident. Taken over the bytes as transferred, not over any JSON wrapper.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub digest: ::std::option::Option<DigestMultibase>,
    ///OPTIONAL. Suggested filename.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub filename: ::std::option::Option<AttachmentRefFilename>,
    ///Opaque attachment id, resolvable via the bridge's attachment fetch.
    pub id: AttachmentRefId,
    ///IANA media type (e.g. `image/jpeg`).
    #[serde(rename = "mediaType")]
    pub media_type: AttachmentRefMediaType,
    ///OPTIONAL. Size in bytes, if known ahead of fetch.
    #[serde(
        rename = "sizeBytes",
        default,
        skip_serializing_if = "::std::option::Option::is_none"
    )]
    pub size_bytes: ::std::option::Option<u64>,
}
impl AttachmentRef {
    pub fn builder() -> builder::AttachmentRef {
        Default::default()
    }
}
///OPTIONAL. Suggested filename.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "OPTIONAL. Suggested filename.",
///  "type": "string",
///  "maxLength": 256
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct AttachmentRefFilename(::std::string::String);
impl ::std::ops::Deref for AttachmentRefFilename {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<AttachmentRefFilename> for ::std::string::String {
    fn from(value: AttachmentRefFilename) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for AttachmentRefFilename {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() > 256usize {
            return Err("longer than 256 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for AttachmentRefFilename {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for AttachmentRefFilename {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for AttachmentRefFilename {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for AttachmentRefFilename {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///Opaque attachment id, resolvable via the bridge's attachment fetch.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "Opaque attachment id, resolvable via the bridge's attachment fetch.",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct AttachmentRefId(::std::string::String);
impl ::std::ops::Deref for AttachmentRefId {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<AttachmentRefId> for ::std::string::String {
    fn from(value: AttachmentRefId) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for AttachmentRefId {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 1usize {
            return Err("shorter than 1 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for AttachmentRefId {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for AttachmentRefId {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for AttachmentRefId {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for AttachmentRefId {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///IANA media type (e.g. `image/jpeg`).
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "IANA media type (e.g. `image/jpeg`).",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct AttachmentRefMediaType(::std::string::String);
impl ::std::ops::Deref for AttachmentRefMediaType {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<AttachmentRefMediaType> for ::std::string::String {
    fn from(value: AttachmentRefMediaType) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for AttachmentRefMediaType {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 1usize {
            return Err("shorter than 1 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for AttachmentRefMediaType {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for AttachmentRefMediaType {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for AttachmentRefMediaType {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for AttachmentRefMediaType {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///`ChainLink`
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "type": "object",
///  "required": [
///    "digest",
///    "id"
///  ],
///  "properties": {
///    "digest": {
///      "description": "Multibase-encoded multihash over the RFC 8785 (JCS) canonicalization of the previous document, so a gap, reorder, or removal in the chain is detectable. The algorithm travels in the multihash rather than being fixed here.",
///      "$ref": "#/definitions/DigestMultibase"
///    },
///    "id": {
///      "description": "The `id` of the previous `chat/message` Trust Task document in this conversation.",
///      "type": "string",
///      "minLength": 1
///    }
///  },
///  "additionalProperties": false
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
#[non_exhaustive]
pub struct ChainLink {
    ///Multibase-encoded multihash over the RFC 8785 (JCS) canonicalization of the previous document, so a gap, reorder, or removal in the chain is detectable. The algorithm travels in the multihash rather than being fixed here.
    pub digest: DigestMultibase,
    ///The `id` of the previous `chat/message` Trust Task document in this conversation.
    pub id: ChainLinkId,
}
impl ChainLink {
    pub fn builder() -> builder::ChainLink {
        Default::default()
    }
}
///The `id` of the previous `chat/message` Trust Task document in this conversation.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "The `id` of the previous `chat/message` Trust Task document in this conversation.",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct ChainLinkId(::std::string::String);
impl ::std::ops::Deref for ChainLinkId {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<ChainLinkId> for ::std::string::String {
    fn from(value: ChainLinkId) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for ChainLinkId {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 1usize {
            return Err("shorter than 1 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for ChainLinkId {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for ChainLinkId {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for ChainLinkId {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for ChainLinkId {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
/**
A cryptographic digest as a multibase-encoded multihash — the encoding the W3C Verifiable Credentials Data Model 2.0 defines for `digestMultibase`, and the one `did:webvh` uses for its SCID and entry hashes.

Multihash carries the hash algorithm in-band, so the value is self-describing and the wire format survives an algorithm change without a schema revision; multibase does the same for the base encoding, so a verifier never infers base58 from base64url by context. A bare hex string or a `sha-256:`-style prefix hard-codes one algorithm into the wire contract and is non-conforming here.

This definition constrains the *encoding only*. What the digest is computed over is stated by each referencing field, because it differs legitimately: a digest over a JSON document is taken over its RFC 8785 (JCS) canonicalization, while a digest over an opaque artifact is taken over its bytes. A field whose input is a JSON document and which does not name a canonicalization is not reproducible.

Restricted to the two multibase headers W3C Controlled Identifiers 1.0 §2.4 normatively requires — `z` (base58btc) and `u` (base64url-no-pad). CID permits others but states that "interoperability is not guaranteed between implementations using such values", and a registry whose purpose is interoperability should not mint digests a conforming verifier may be unable to read. The alphabets are enforced rather than assumed: base58btc excludes 0, O, I and l, and an earlier permissive pattern let three published examples carry digests that were not valid base58 at all. base58btc is RECOMMENDED, for consistency with `did:key` and `did:webvh`.*/
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "title": "DigestMultibase",
///  "description": "\nA cryptographic digest as a multibase-encoded multihash — the encoding the W3C Verifiable Credentials Data Model 2.0 defines for `digestMultibase`, and the one `did:webvh` uses for its SCID and entry hashes.\n\nMultihash carries the hash algorithm in-band, so the value is self-describing and the wire format survives an algorithm change without a schema revision; multibase does the same for the base encoding, so a verifier never infers base58 from base64url by context. A bare hex string or a `sha-256:`-style prefix hard-codes one algorithm into the wire contract and is non-conforming here.\n\nThis definition constrains the *encoding only*. What the digest is computed over is stated by each referencing field, because it differs legitimately: a digest over a JSON document is taken over its RFC 8785 (JCS) canonicalization, while a digest over an opaque artifact is taken over its bytes. A field whose input is a JSON document and which does not name a canonicalization is not reproducible.\n\nRestricted to the two multibase headers W3C Controlled Identifiers 1.0 §2.4 normatively requires — `z` (base58btc) and `u` (base64url-no-pad). CID permits others but states that \"interoperability is not guaranteed between implementations using such values\", and a registry whose purpose is interoperability should not mint digests a conforming verifier may be unable to read. The alphabets are enforced rather than assumed: base58btc excludes 0, O, I and l, and an earlier permissive pattern let three published examples carry digests that were not valid base58 at all. base58btc is RECOMMENDED, for consistency with `did:key` and `did:webvh`.",
///  "examples": [
///    "zQmbWqxBEKC3P8tqsKc98xmWNzrzDtRLMiMPL8wBuTGsMnR"
///  ],
///  "type": "string",
///  "minLength": 16,
///  "pattern": "^(z[1-9A-HJ-NP-Za-km-z]+|u[A-Za-z0-9_-]+)$"
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct DigestMultibase(::std::string::String);
impl ::std::ops::Deref for DigestMultibase {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<DigestMultibase> for ::std::string::String {
    fn from(value: DigestMultibase) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for DigestMultibase {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 16usize {
            return Err("shorter than 16 characters".into());
        }
        static PATTERN: ::std::sync::LazyLock<::regress::Regex> =
            ::std::sync::LazyLock::new(|| {
                ::regress::Regex::new("^(z[1-9A-HJ-NP-Za-km-z]+|u[A-Za-z0-9_-]+)$").unwrap()
            });
        if PATTERN.find(value).is_none() {
            return Err(
                "doesn't match pattern \"^(z[1-9A-HJ-NP-Za-km-z]+|u[A-Za-z0-9_-]+)$\"".into(),
            );
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for DigestMultibase {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for DigestMultibase {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for DigestMultibase {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for DigestMultibase {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///Vendor-namespaced extension object per SPEC.md §4.5.1. Each immediate key MUST be a reverse-DNS namespace; structure under each namespace is opaque to the framework.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "title": "Ext",
///  "description": "Vendor-namespaced extension object per SPEC.md §4.5.1. Each immediate key MUST be a reverse-DNS namespace; structure under each namespace is opaque to the framework.",
///  "type": "object",
///  "minProperties": 1,
///  "additionalProperties": true,
///  "propertyNames": {
///    "pattern": "^[a-z][a-z0-9-]*(\\.[a-z0-9-]+)+$"
///  }
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(transparent)]
pub struct Ext(pub ::std::collections::HashMap<ExtKey, ::serde_json::Value>);
impl ::std::ops::Deref for Ext {
    type Target = ::std::collections::HashMap<ExtKey, ::serde_json::Value>;
    fn deref(&self) -> &::std::collections::HashMap<ExtKey, ::serde_json::Value> {
        &self.0
    }
}
impl ::std::convert::From<Ext> for ::std::collections::HashMap<ExtKey, ::serde_json::Value> {
    fn from(value: Ext) -> Self {
        value.0
    }
}
impl ::std::convert::From<::std::collections::HashMap<ExtKey, ::serde_json::Value>> for Ext {
    fn from(value: ::std::collections::HashMap<ExtKey, ::serde_json::Value>) -> Self {
        Self(value)
    }
}
///`ExtKey`
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "type": "string",
///  "pattern": "^[a-z][a-z0-9-]*(\\.[a-z0-9-]+)+$"
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct ExtKey(::std::string::String);
impl ::std::ops::Deref for ExtKey {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<ExtKey> for ::std::string::String {
    fn from(value: ExtKey) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for ExtKey {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        static PATTERN: ::std::sync::LazyLock<::regress::Regex> =
            ::std::sync::LazyLock::new(|| {
                ::regress::Regex::new("^[a-z][a-z0-9-]*(\\.[a-z0-9-]+)+$").unwrap()
            });
        if PATTERN.find(value).is_none() {
            return Err("doesn't match pattern \"^[a-z][a-z0-9-]*(\\.[a-z0-9-]+)+$\"".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for ExtKey {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for ExtKey {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for ExtKey {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for ExtKey {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///`Mention`
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "type": "object",
///  "required": [
///    "length",
///    "participant",
///    "start"
///  ],
///  "properties": {
///    "displayName": {
///      "description": "OPTIONAL. Human-readable name the source platform supplied for the participant. A non-authoritative rendering hint — never used for identity. Absent when the platform exposes no name in the mention.",
///      "type": "string",
///      "maxLength": 256
///    },
///    "length": {
///      "description": "Source-platform native length of the sentinel span in `text`. Advisory; see `start`.",
///      "type": "integer",
///      "minimum": 0.0
///    },
///    "participant": {
///      "description": "Opaque, bridge-issued handle for the mentioned participant. MUST NOT be a raw platform address; like `conversationId` it carries no platform-native identifier (phone number, UUID, member id) upstream.",
///      "type": "string",
///      "minLength": 1
///    },
///    "start": {
///      "description": "Source-platform native start offset of the sentinel span in `text`. Advisory: offset units differ across platforms, so the authoritative binding is positional (Nth U+FFFC → Nth mention), not by offset.",
///      "type": "integer",
///      "minimum": 0.0
///    }
///  },
///  "additionalProperties": false
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
#[non_exhaustive]
pub struct Mention {
    ///OPTIONAL. Human-readable name the source platform supplied for the participant. A non-authoritative rendering hint — never used for identity. Absent when the platform exposes no name in the mention.
    #[serde(
        rename = "displayName",
        default,
        skip_serializing_if = "::std::option::Option::is_none"
    )]
    pub display_name: ::std::option::Option<MentionDisplayName>,
    ///Source-platform native length of the sentinel span in `text`. Advisory; see `start`.
    pub length: u64,
    ///Opaque, bridge-issued handle for the mentioned participant. MUST NOT be a raw platform address; like `conversationId` it carries no platform-native identifier (phone number, UUID, member id) upstream.
    pub participant: MentionParticipant,
    ///Source-platform native start offset of the sentinel span in `text`. Advisory: offset units differ across platforms, so the authoritative binding is positional (Nth U+FFFC → Nth mention), not by offset.
    pub start: u64,
}
impl Mention {
    pub fn builder() -> builder::Mention {
        Default::default()
    }
}
///OPTIONAL. Human-readable name the source platform supplied for the participant. A non-authoritative rendering hint — never used for identity. Absent when the platform exposes no name in the mention.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "OPTIONAL. Human-readable name the source platform supplied for the participant. A non-authoritative rendering hint — never used for identity. Absent when the platform exposes no name in the mention.",
///  "type": "string",
///  "maxLength": 256
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct MentionDisplayName(::std::string::String);
impl ::std::ops::Deref for MentionDisplayName {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<MentionDisplayName> for ::std::string::String {
    fn from(value: MentionDisplayName) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for MentionDisplayName {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() > 256usize {
            return Err("longer than 256 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for MentionDisplayName {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for MentionDisplayName {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for MentionDisplayName {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for MentionDisplayName {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///Opaque, bridge-issued handle for the mentioned participant. MUST NOT be a raw platform address; like `conversationId` it carries no platform-native identifier (phone number, UUID, member id) upstream.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "Opaque, bridge-issued handle for the mentioned participant. MUST NOT be a raw platform address; like `conversationId` it carries no platform-native identifier (phone number, UUID, member id) upstream.",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct MentionParticipant(::std::string::String);
impl ::std::ops::Deref for MentionParticipant {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<MentionParticipant> for ::std::string::String {
    fn from(value: MentionParticipant) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for MentionParticipant {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 1usize {
            return Err("shorter than 1 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for MentionParticipant {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for MentionParticipant {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for MentionParticipant {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for MentionParticipant {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///A conversational message exchanged between an AI agent and a messaging-platform bridge. Signed by its author (via the document `proof`) and hash-linked to the previous message in the conversation (`prev`), so a third party can verify each message's author and ordering after the transport has closed — for audit and dispute resolution. Conversations and contacts are referenced by opaque, bridge-issued handles, never raw platform addresses.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "$id": "https://trusttasks.org/spec/chat/message/0.1",
///  "title": "Payload",
///  "description": "A conversational message exchanged between an AI agent and a messaging-platform bridge. Signed by its author (via the document `proof`) and hash-linked to the previous message in the conversation (`prev`), so a third party can verify each message's author and ordering after the transport has closed — for audit and dispute resolution. Conversations and contacts are referenced by opaque, bridge-issued handles, never raw platform addresses.",
///  "type": "object",
///  "required": [
///    "conversationId",
///    "direction",
///    "sentAt"
///  ],
///  "properties": {
///    "attachments": {
///      "description": "OPTIONAL. Attachments carried by reference, never inline.",
///      "type": "array",
///      "items": {
///        "$ref": "#/definitions/AttachmentRef"
///      }
///    },
///    "conversationId": {
///      "description": "Opaque, bridge-issued conversation handle. MUST NOT be a raw platform address (phone number, chat id).",
///      "type": "string",
///      "minLength": 1
///    },
///    "direction": {
///      "description": "`inbound` = platform → agent (the bridge attests what it received and normalized); `outbound` = agent → platform (authored by the agent).",
///      "type": "string",
///      "enum": [
///        "inbound",
///        "outbound"
///      ]
///    },
///    "ext": {
///      "$ref": "#/definitions/Ext"
///    },
///    "isGroup": {
///      "description": "OPTIONAL. True when the conversation is a group/channel, false (or absent) for a 1:1 DM. Part of the signed record so the audit chain captures where a message was sent, not just its text.",
///      "type": "boolean"
///    },
///    "isMention": {
///      "description": "OPTIONAL. Platform-confirmed signal that this (inbound) message addresses the agent — e.g. an @-mention of the agent, or any DM. Lets a group-aware consumer decide whether a group message is for it without agent-name heuristics. Distinct from `mentions`, which lists the participants referenced in the body. Outbound messages leave this absent/false.",
///      "type": "boolean"
///    },
///    "mentions": {
///      "description": "OPTIONAL. @-mentions carried by the message, ordered to match the U+FFFC sentinel placeholders in `text`: the Nth U+FFFC binds to the Nth entry. Absent/empty when the message mentions no one. The producer is responsible for emitting one U+FFFC sentinel per mention, in order — translating each platform's native mention encoding into this neutral form.",
///      "type": "array",
///      "items": {
///        "$ref": "#/definitions/Mention"
///      }
///    },
///    "platform": {
///      "description": "OPTIONAL. Platform key the message belongs to (e.g. `signal`, `whatsapp`). Advisory.",
///      "type": "string",
///      "minLength": 1
///    },
///    "prev": {
///      "description": "OPTIONAL on the first message in a conversation; present on every message thereafter. Links to the previous message so the conversation forms a verifiable, ordered chain.",
///      "$ref": "#/definitions/ChainLink"
///    },
///    "replyToId": {
///      "description": "OPTIONAL. The `id` of the message this one replies to.",
///      "type": "string",
///      "minLength": 1
///    },
///    "sentAt": {
///      "description": "RFC 3339 timestamp the author asserts for this message.",
///      "type": "string",
///      "format": "date-time"
///    },
///    "text": {
///      "description": "OPTIONAL. Plain-text body. Absent for attachment-only messages.",
///      "type": "string",
///      "maxLength": 16384
///    }
///  },
///  "additionalProperties": false
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
#[non_exhaustive]
pub struct Payload {
    ///OPTIONAL. Attachments carried by reference, never inline.
    #[serde(default, skip_serializing_if = "::std::vec::Vec::is_empty")]
    pub attachments: ::std::vec::Vec<AttachmentRef>,
    ///Opaque, bridge-issued conversation handle. MUST NOT be a raw platform address (phone number, chat id).
    #[serde(rename = "conversationId")]
    pub conversation_id: PayloadConversationId,
    ///`inbound` = platform → agent (the bridge attests what it received and normalized); `outbound` = agent → platform (authored by the agent).
    pub direction: PayloadDirection,
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub ext: ::std::option::Option<Ext>,
    ///OPTIONAL. True when the conversation is a group/channel, false (or absent) for a 1:1 DM. Part of the signed record so the audit chain captures where a message was sent, not just its text.
    #[serde(
        rename = "isGroup",
        default,
        skip_serializing_if = "::std::option::Option::is_none"
    )]
    pub is_group: ::std::option::Option<bool>,
    ///OPTIONAL. Platform-confirmed signal that this (inbound) message addresses the agent — e.g. an @-mention of the agent, or any DM. Lets a group-aware consumer decide whether a group message is for it without agent-name heuristics. Distinct from `mentions`, which lists the participants referenced in the body. Outbound messages leave this absent/false.
    #[serde(
        rename = "isMention",
        default,
        skip_serializing_if = "::std::option::Option::is_none"
    )]
    pub is_mention: ::std::option::Option<bool>,
    ///OPTIONAL. @-mentions carried by the message, ordered to match the U+FFFC sentinel placeholders in `text`: the Nth U+FFFC binds to the Nth entry. Absent/empty when the message mentions no one. The producer is responsible for emitting one U+FFFC sentinel per mention, in order — translating each platform's native mention encoding into this neutral form.
    #[serde(default, skip_serializing_if = "::std::vec::Vec::is_empty")]
    pub mentions: ::std::vec::Vec<Mention>,
    ///OPTIONAL. Platform key the message belongs to (e.g. `signal`, `whatsapp`). Advisory.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub platform: ::std::option::Option<PayloadPlatform>,
    ///OPTIONAL on the first message in a conversation; present on every message thereafter. Links to the previous message so the conversation forms a verifiable, ordered chain.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub prev: ::std::option::Option<ChainLink>,
    ///OPTIONAL. The `id` of the message this one replies to.
    #[serde(
        rename = "replyToId",
        default,
        skip_serializing_if = "::std::option::Option::is_none"
    )]
    pub reply_to_id: ::std::option::Option<PayloadReplyToId>,
    ///RFC 3339 timestamp the author asserts for this message.
    #[serde(rename = "sentAt")]
    pub sent_at: ::chrono::DateTime<::chrono::offset::Utc>,
    ///OPTIONAL. Plain-text body. Absent for attachment-only messages.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub text: ::std::option::Option<PayloadText>,
}
impl Payload {
    pub fn builder() -> builder::Payload {
        Default::default()
    }
}
///Opaque, bridge-issued conversation handle. MUST NOT be a raw platform address (phone number, chat id).
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "Opaque, bridge-issued conversation handle. MUST NOT be a raw platform address (phone number, chat id).",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct PayloadConversationId(::std::string::String);
impl ::std::ops::Deref for PayloadConversationId {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<PayloadConversationId> for ::std::string::String {
    fn from(value: PayloadConversationId) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for PayloadConversationId {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 1usize {
            return Err("shorter than 1 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for PayloadConversationId {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for PayloadConversationId {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for PayloadConversationId {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for PayloadConversationId {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///`inbound` = platform → agent (the bridge attests what it received and normalized); `outbound` = agent → platform (authored by the agent).
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "`inbound` = platform → agent (the bridge attests what it received and normalized); `outbound` = agent → platform (authored by the agent).",
///  "type": "string",
///  "enum": [
///    "inbound",
///    "outbound"
///  ]
///}
/// ```
/// </details>
#[derive(
    ::serde::Deserialize,
    ::serde::Serialize,
    Clone,
    Copy,
    Debug,
    Eq,
    Hash,
    Ord,
    PartialEq,
    PartialOrd,
)]
#[non_exhaustive]
pub enum PayloadDirection {
    #[serde(rename = "inbound")]
    Inbound,
    #[serde(rename = "outbound")]
    Outbound,
}
impl ::std::fmt::Display for PayloadDirection {
    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
        match *self {
            Self::Inbound => f.write_str("inbound"),
            Self::Outbound => f.write_str("outbound"),
        }
    }
}
impl ::std::str::FromStr for PayloadDirection {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        match value {
            "inbound" => Ok(Self::Inbound),
            "outbound" => Ok(Self::Outbound),
            _ => Err("invalid value".into()),
        }
    }
}
impl ::std::convert::TryFrom<&str> for PayloadDirection {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for PayloadDirection {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for PayloadDirection {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
///OPTIONAL. Platform key the message belongs to (e.g. `signal`, `whatsapp`). Advisory.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "OPTIONAL. Platform key the message belongs to (e.g. `signal`, `whatsapp`). Advisory.",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct PayloadPlatform(::std::string::String);
impl ::std::ops::Deref for PayloadPlatform {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<PayloadPlatform> for ::std::string::String {
    fn from(value: PayloadPlatform) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for PayloadPlatform {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 1usize {
            return Err("shorter than 1 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for PayloadPlatform {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for PayloadPlatform {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for PayloadPlatform {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for PayloadPlatform {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///OPTIONAL. The `id` of the message this one replies to.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "OPTIONAL. The `id` of the message this one replies to.",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct PayloadReplyToId(::std::string::String);
impl ::std::ops::Deref for PayloadReplyToId {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<PayloadReplyToId> for ::std::string::String {
    fn from(value: PayloadReplyToId) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for PayloadReplyToId {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() < 1usize {
            return Err("shorter than 1 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for PayloadReplyToId {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for PayloadReplyToId {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for PayloadReplyToId {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for PayloadReplyToId {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
///OPTIONAL. Plain-text body. Absent for attachment-only messages.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "OPTIONAL. Plain-text body. Absent for attachment-only messages.",
///  "type": "string",
///  "maxLength": 16384
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct PayloadText(::std::string::String);
impl ::std::ops::Deref for PayloadText {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<PayloadText> for ::std::string::String {
    fn from(value: PayloadText) -> Self {
        value.0
    }
}
impl ::std::str::FromStr for PayloadText {
    type Err = self::error::ConversionError;
    fn from_str(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        if value.chars().count() > 16384usize {
            return Err("longer than 16384 characters".into());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for PayloadText {
    type Error = self::error::ConversionError;
    fn try_from(value: &str) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<&::std::string::String> for PayloadText {
    type Error = self::error::ConversionError;
    fn try_from(
        value: &::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl ::std::convert::TryFrom<::std::string::String> for PayloadText {
    type Error = self::error::ConversionError;
    fn try_from(
        value: ::std::string::String,
    ) -> ::std::result::Result<Self, self::error::ConversionError> {
        value.parse()
    }
}
impl<'de> ::serde::Deserialize<'de> for PayloadText {
    fn deserialize<D>(deserializer: D) -> ::std::result::Result<Self, D::Error>
    where
        D: ::serde::Deserializer<'de>,
    {
        ::std::string::String::deserialize(deserializer)?
            .parse()
            .map_err(|e: self::error::ConversionError| {
                <D::Error as ::serde::de::Error>::custom(e.to_string())
            })
    }
}
/// Types for composing complex structures.
pub mod builder {
    #[derive(Clone, Debug)]
    pub struct AttachmentRef {
        digest: ::std::result::Result<
            ::std::option::Option<super::DigestMultibase>,
            ::std::string::String,
        >,
        filename: ::std::result::Result<
            ::std::option::Option<super::AttachmentRefFilename>,
            ::std::string::String,
        >,
        id: ::std::result::Result<super::AttachmentRefId, ::std::string::String>,
        media_type: ::std::result::Result<super::AttachmentRefMediaType, ::std::string::String>,
        size_bytes: ::std::result::Result<::std::option::Option<u64>, ::std::string::String>,
    }
    impl ::std::default::Default for AttachmentRef {
        fn default() -> Self {
            Self {
                digest: Ok(Default::default()),
                filename: Ok(Default::default()),
                id: Err("no value supplied for id".to_string()),
                media_type: Err("no value supplied for media_type".to_string()),
                size_bytes: Ok(Default::default()),
            }
        }
    }
    impl AttachmentRef {
        pub fn digest<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<super::DigestMultibase>>,
            T::Error: ::std::fmt::Display,
        {
            self.digest = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for digest: {e}"));
            self
        }
        pub fn filename<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<super::AttachmentRefFilename>>,
            T::Error: ::std::fmt::Display,
        {
            self.filename = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for filename: {e}"));
            self
        }
        pub fn id<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<super::AttachmentRefId>,
            T::Error: ::std::fmt::Display,
        {
            self.id = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for id: {e}"));
            self
        }
        pub fn media_type<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<super::AttachmentRefMediaType>,
            T::Error: ::std::fmt::Display,
        {
            self.media_type = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for media_type: {e}"));
            self
        }
        pub fn size_bytes<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<u64>>,
            T::Error: ::std::fmt::Display,
        {
            self.size_bytes = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for size_bytes: {e}"));
            self
        }
    }
    impl ::std::convert::TryFrom<AttachmentRef> for super::AttachmentRef {
        type Error = super::error::ConversionError;
        fn try_from(
            value: AttachmentRef,
        ) -> ::std::result::Result<Self, super::error::ConversionError> {
            Ok(Self {
                digest: value.digest?,
                filename: value.filename?,
                id: value.id?,
                media_type: value.media_type?,
                size_bytes: value.size_bytes?,
            })
        }
    }
    impl ::std::convert::From<super::AttachmentRef> for AttachmentRef {
        fn from(value: super::AttachmentRef) -> Self {
            Self {
                digest: Ok(value.digest),
                filename: Ok(value.filename),
                id: Ok(value.id),
                media_type: Ok(value.media_type),
                size_bytes: Ok(value.size_bytes),
            }
        }
    }
    #[derive(Clone, Debug)]
    pub struct ChainLink {
        digest: ::std::result::Result<super::DigestMultibase, ::std::string::String>,
        id: ::std::result::Result<super::ChainLinkId, ::std::string::String>,
    }
    impl ::std::default::Default for ChainLink {
        fn default() -> Self {
            Self {
                digest: Err("no value supplied for digest".to_string()),
                id: Err("no value supplied for id".to_string()),
            }
        }
    }
    impl ChainLink {
        pub fn digest<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<super::DigestMultibase>,
            T::Error: ::std::fmt::Display,
        {
            self.digest = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for digest: {e}"));
            self
        }
        pub fn id<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<super::ChainLinkId>,
            T::Error: ::std::fmt::Display,
        {
            self.id = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for id: {e}"));
            self
        }
    }
    impl ::std::convert::TryFrom<ChainLink> for super::ChainLink {
        type Error = super::error::ConversionError;
        fn try_from(
            value: ChainLink,
        ) -> ::std::result::Result<Self, super::error::ConversionError> {
            Ok(Self {
                digest: value.digest?,
                id: value.id?,
            })
        }
    }
    impl ::std::convert::From<super::ChainLink> for ChainLink {
        fn from(value: super::ChainLink) -> Self {
            Self {
                digest: Ok(value.digest),
                id: Ok(value.id),
            }
        }
    }
    #[derive(Clone, Debug)]
    pub struct Mention {
        display_name: ::std::result::Result<
            ::std::option::Option<super::MentionDisplayName>,
            ::std::string::String,
        >,
        length: ::std::result::Result<u64, ::std::string::String>,
        participant: ::std::result::Result<super::MentionParticipant, ::std::string::String>,
        start: ::std::result::Result<u64, ::std::string::String>,
    }
    impl ::std::default::Default for Mention {
        fn default() -> Self {
            Self {
                display_name: Ok(Default::default()),
                length: Err("no value supplied for length".to_string()),
                participant: Err("no value supplied for participant".to_string()),
                start: Err("no value supplied for start".to_string()),
            }
        }
    }
    impl Mention {
        pub fn display_name<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<super::MentionDisplayName>>,
            T::Error: ::std::fmt::Display,
        {
            self.display_name = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for display_name: {e}"));
            self
        }
        pub fn length<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<u64>,
            T::Error: ::std::fmt::Display,
        {
            self.length = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for length: {e}"));
            self
        }
        pub fn participant<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<super::MentionParticipant>,
            T::Error: ::std::fmt::Display,
        {
            self.participant = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for participant: {e}"));
            self
        }
        pub fn start<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<u64>,
            T::Error: ::std::fmt::Display,
        {
            self.start = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for start: {e}"));
            self
        }
    }
    impl ::std::convert::TryFrom<Mention> for super::Mention {
        type Error = super::error::ConversionError;
        fn try_from(value: Mention) -> ::std::result::Result<Self, super::error::ConversionError> {
            Ok(Self {
                display_name: value.display_name?,
                length: value.length?,
                participant: value.participant?,
                start: value.start?,
            })
        }
    }
    impl ::std::convert::From<super::Mention> for Mention {
        fn from(value: super::Mention) -> Self {
            Self {
                display_name: Ok(value.display_name),
                length: Ok(value.length),
                participant: Ok(value.participant),
                start: Ok(value.start),
            }
        }
    }
    #[derive(Clone, Debug)]
    pub struct Payload {
        attachments:
            ::std::result::Result<::std::vec::Vec<super::AttachmentRef>, ::std::string::String>,
        conversation_id: ::std::result::Result<super::PayloadConversationId, ::std::string::String>,
        direction: ::std::result::Result<super::PayloadDirection, ::std::string::String>,
        ext: ::std::result::Result<::std::option::Option<super::Ext>, ::std::string::String>,
        is_group: ::std::result::Result<::std::option::Option<bool>, ::std::string::String>,
        is_mention: ::std::result::Result<::std::option::Option<bool>, ::std::string::String>,
        mentions: ::std::result::Result<::std::vec::Vec<super::Mention>, ::std::string::String>,
        platform: ::std::result::Result<
            ::std::option::Option<super::PayloadPlatform>,
            ::std::string::String,
        >,
        prev: ::std::result::Result<::std::option::Option<super::ChainLink>, ::std::string::String>,
        reply_to_id: ::std::result::Result<
            ::std::option::Option<super::PayloadReplyToId>,
            ::std::string::String,
        >,
        sent_at:
            ::std::result::Result<::chrono::DateTime<::chrono::offset::Utc>, ::std::string::String>,
        text:
            ::std::result::Result<::std::option::Option<super::PayloadText>, ::std::string::String>,
    }
    impl ::std::default::Default for Payload {
        fn default() -> Self {
            Self {
                attachments: Ok(Default::default()),
                conversation_id: Err("no value supplied for conversation_id".to_string()),
                direction: Err("no value supplied for direction".to_string()),
                ext: Ok(Default::default()),
                is_group: Ok(Default::default()),
                is_mention: Ok(Default::default()),
                mentions: Ok(Default::default()),
                platform: Ok(Default::default()),
                prev: Ok(Default::default()),
                reply_to_id: Ok(Default::default()),
                sent_at: Err("no value supplied for sent_at".to_string()),
                text: Ok(Default::default()),
            }
        }
    }
    impl Payload {
        pub fn attachments<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::vec::Vec<super::AttachmentRef>>,
            T::Error: ::std::fmt::Display,
        {
            self.attachments = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for attachments: {e}"));
            self
        }
        pub fn conversation_id<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<super::PayloadConversationId>,
            T::Error: ::std::fmt::Display,
        {
            self.conversation_id = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for conversation_id: {e}"));
            self
        }
        pub fn direction<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<super::PayloadDirection>,
            T::Error: ::std::fmt::Display,
        {
            self.direction = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for direction: {e}"));
            self
        }
        pub fn ext<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<super::Ext>>,
            T::Error: ::std::fmt::Display,
        {
            self.ext = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for ext: {e}"));
            self
        }
        pub fn is_group<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<bool>>,
            T::Error: ::std::fmt::Display,
        {
            self.is_group = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for is_group: {e}"));
            self
        }
        pub fn is_mention<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<bool>>,
            T::Error: ::std::fmt::Display,
        {
            self.is_mention = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for is_mention: {e}"));
            self
        }
        pub fn mentions<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::vec::Vec<super::Mention>>,
            T::Error: ::std::fmt::Display,
        {
            self.mentions = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for mentions: {e}"));
            self
        }
        pub fn platform<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<super::PayloadPlatform>>,
            T::Error: ::std::fmt::Display,
        {
            self.platform = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for platform: {e}"));
            self
        }
        pub fn prev<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<super::ChainLink>>,
            T::Error: ::std::fmt::Display,
        {
            self.prev = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for prev: {e}"));
            self
        }
        pub fn reply_to_id<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<super::PayloadReplyToId>>,
            T::Error: ::std::fmt::Display,
        {
            self.reply_to_id = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for reply_to_id: {e}"));
            self
        }
        pub fn sent_at<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::chrono::DateTime<::chrono::offset::Utc>>,
            T::Error: ::std::fmt::Display,
        {
            self.sent_at = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for sent_at: {e}"));
            self
        }
        pub fn text<T>(mut self, value: T) -> Self
        where
            T: ::std::convert::TryInto<::std::option::Option<super::PayloadText>>,
            T::Error: ::std::fmt::Display,
        {
            self.text = value
                .try_into()
                .map_err(|e| format!("error converting supplied value for text: {e}"));
            self
        }
    }
    impl ::std::convert::TryFrom<Payload> for super::Payload {
        type Error = super::error::ConversionError;
        fn try_from(value: Payload) -> ::std::result::Result<Self, super::error::ConversionError> {
            Ok(Self {
                attachments: value.attachments?,
                conversation_id: value.conversation_id?,
                direction: value.direction?,
                ext: value.ext?,
                is_group: value.is_group?,
                is_mention: value.is_mention?,
                mentions: value.mentions?,
                platform: value.platform?,
                prev: value.prev?,
                reply_to_id: value.reply_to_id?,
                sent_at: value.sent_at?,
                text: value.text?,
            })
        }
    }
    impl ::std::convert::From<super::Payload> for Payload {
        fn from(value: super::Payload) -> Self {
            Self {
                attachments: Ok(value.attachments),
                conversation_id: Ok(value.conversation_id),
                direction: Ok(value.direction),
                ext: Ok(value.ext),
                is_group: Ok(value.is_group),
                is_mention: Ok(value.is_mention),
                mentions: Ok(value.mentions),
                platform: Ok(value.platform),
                prev: Ok(value.prev),
                reply_to_id: Ok(value.reply_to_id),
                sent_at: Ok(value.sent_at),
                text: Ok(value.text),
            }
        }
    }
}
impl crate::Payload for Payload {
    const TYPE_URI: &'static str = "https://trusttasks.org/spec/chat/message/0.1";
    const IS_PROOF_REQUIRED: bool = true;
    const IS_ISSUED_AT_REQUIRED: bool = true;
    const IS_RECIPIENT_REQUIRED: bool = true;
    const PAYLOAD_SCHEMA: Option<&'static str> = Some(
        "{\n  \"$defs\": {\n    \"AttachmentRef\": {\n      \"additionalProperties\": false,\n      \"properties\": {\n        \"digest\": {\n          \"$ref\": \"#/$defs/DigestMultibase\",\n          \"description\": \"OPTIONAL. Multibase-encoded multihash over the attachment bytes, so the reference is itself verifiable and tamper-evident. Taken over the bytes as transferred, not over any JSON wrapper.\"\n        },\n        \"filename\": {\n          \"description\": \"OPTIONAL. Suggested filename.\",\n          \"maxLength\": 256,\n          \"type\": \"string\"\n        },\n        \"id\": {\n          \"description\": \"Opaque attachment id, resolvable via the bridge's attachment fetch.\",\n          \"minLength\": 1,\n          \"type\": \"string\"\n        },\n        \"mediaType\": {\n          \"description\": \"IANA media type (e.g. `image/jpeg`).\",\n          \"minLength\": 1,\n          \"type\": \"string\"\n        },\n        \"sizeBytes\": {\n          \"description\": \"OPTIONAL. Size in bytes, if known ahead of fetch.\",\n          \"minimum\": 0,\n          \"type\": \"integer\"\n        }\n      },\n      \"required\": [\n        \"id\",\n        \"mediaType\"\n      ],\n      \"type\": \"object\"\n    },\n    \"ChainLink\": {\n      \"additionalProperties\": false,\n      \"properties\": {\n        \"digest\": {\n          \"$ref\": \"#/$defs/DigestMultibase\",\n          \"description\": \"Multibase-encoded multihash over the RFC 8785 (JCS) canonicalization of the previous document, so a gap, reorder, or removal in the chain is detectable. The algorithm travels in the multihash rather than being fixed here.\"\n        },\n        \"id\": {\n          \"description\": \"The `id` of the previous `chat/message` Trust Task document in this conversation.\",\n          \"minLength\": 1,\n          \"type\": \"string\"\n        }\n      },\n      \"required\": [\n        \"id\",\n        \"digest\"\n      ],\n      \"type\": \"object\"\n    },\n    \"DigestMultibase\": {\n      \"description\": \"A cryptographic digest as a multibase-encoded multihash — the encoding the W3C Verifiable Credentials Data Model 2.0 defines for `digestMultibase`, and the one `did:webvh` uses for its SCID and entry hashes.\\n\\nMultihash carries the hash algorithm in-band, so the value is self-describing and the wire format survives an algorithm change without a schema revision; multibase does the same for the base encoding, so a verifier never infers base58 from base64url by context. A bare hex string or a `sha-256:`-style prefix hard-codes one algorithm into the wire contract and is non-conforming here.\\n\\nThis definition constrains the *encoding only*. What the digest is computed over is stated by each referencing field, because it differs legitimately: a digest over a JSON document is taken over its RFC 8785 (JCS) canonicalization, while a digest over an opaque artifact is taken over its bytes. A field whose input is a JSON document and which does not name a canonicalization is not reproducible.\\n\\nRestricted to the two multibase headers W3C Controlled Identifiers 1.0 §2.4 normatively requires — `z` (base58btc) and `u` (base64url-no-pad). CID permits others but states that \\\"interoperability is not guaranteed between implementations using such values\\\", and a registry whose purpose is interoperability should not mint digests a conforming verifier may be unable to read. The alphabets are enforced rather than assumed: base58btc excludes 0, O, I and l, and an earlier permissive pattern let three published examples carry digests that were not valid base58 at all. base58btc is RECOMMENDED, for consistency with `did:key` and `did:webvh`.\",\n      \"examples\": [\n        \"zQmbWqxBEKC3P8tqsKc98xmWNzrzDtRLMiMPL8wBuTGsMnR\"\n      ],\n      \"minLength\": 16,\n      \"pattern\": \"^(z[1-9A-HJ-NP-Za-km-z]+|u[A-Za-z0-9_-]+)$\",\n      \"title\": \"DigestMultibase\",\n      \"type\": \"string\"\n    },\n    \"Ext\": {\n      \"additionalProperties\": true,\n      \"description\": \"Vendor-namespaced extension object per SPEC.md §4.5.1. Each immediate key MUST be a reverse-DNS namespace; structure under each namespace is opaque to the framework.\",\n      \"minProperties\": 1,\n      \"propertyNames\": {\n        \"pattern\": \"^[a-z][a-z0-9-]*(\\\\.[a-z0-9-]+)+$\"\n      },\n      \"title\": \"Ext\",\n      \"type\": \"object\"\n    },\n    \"Mention\": {\n      \"additionalProperties\": false,\n      \"properties\": {\n        \"displayName\": {\n          \"description\": \"OPTIONAL. Human-readable name the source platform supplied for the participant. A non-authoritative rendering hint — never used for identity. Absent when the platform exposes no name in the mention.\",\n          \"maxLength\": 256,\n          \"type\": \"string\"\n        },\n        \"length\": {\n          \"description\": \"Source-platform native length of the sentinel span in `text`. Advisory; see `start`.\",\n          \"minimum\": 0,\n          \"type\": \"integer\"\n        },\n        \"participant\": {\n          \"description\": \"Opaque, bridge-issued handle for the mentioned participant. MUST NOT be a raw platform address; like `conversationId` it carries no platform-native identifier (phone number, UUID, member id) upstream.\",\n          \"minLength\": 1,\n          \"type\": \"string\"\n        },\n        \"start\": {\n          \"description\": \"Source-platform native start offset of the sentinel span in `text`. Advisory: offset units differ across platforms, so the authoritative binding is positional (Nth U+FFFC → Nth mention), not by offset.\",\n          \"minimum\": 0,\n          \"type\": \"integer\"\n        }\n      },\n      \"required\": [\n        \"participant\",\n        \"start\",\n        \"length\"\n      ],\n      \"type\": \"object\"\n    }\n  },\n  \"$id\": \"https://trusttasks.org/spec/chat/message/0.1\",\n  \"$schema\": \"https://json-schema.org/draft/2020-12/schema\",\n  \"additionalProperties\": false,\n  \"description\": \"A conversational message exchanged between an AI agent and a messaging-platform bridge. Signed by its author (via the document `proof`) and hash-linked to the previous message in the conversation (`prev`), so a third party can verify each message's author and ordering after the transport has closed — for audit and dispute resolution. Conversations and contacts are referenced by opaque, bridge-issued handles, never raw platform addresses.\",\n  \"properties\": {\n    \"attachments\": {\n      \"description\": \"OPTIONAL. Attachments carried by reference, never inline.\",\n      \"items\": {\n        \"$ref\": \"#/$defs/AttachmentRef\"\n      },\n      \"type\": \"array\"\n    },\n    \"conversationId\": {\n      \"description\": \"Opaque, bridge-issued conversation handle. MUST NOT be a raw platform address (phone number, chat id).\",\n      \"minLength\": 1,\n      \"type\": \"string\"\n    },\n    \"direction\": {\n      \"description\": \"`inbound` = platform → agent (the bridge attests what it received and normalized); `outbound` = agent → platform (authored by the agent).\",\n      \"enum\": [\n        \"inbound\",\n        \"outbound\"\n      ],\n      \"type\": \"string\"\n    },\n    \"ext\": {\n      \"$ref\": \"#/$defs/Ext\"\n    },\n    \"isGroup\": {\n      \"description\": \"OPTIONAL. True when the conversation is a group/channel, false (or absent) for a 1:1 DM. Part of the signed record so the audit chain captures where a message was sent, not just its text.\",\n      \"type\": \"boolean\"\n    },\n    \"isMention\": {\n      \"description\": \"OPTIONAL. Platform-confirmed signal that this (inbound) message addresses the agent — e.g. an @-mention of the agent, or any DM. Lets a group-aware consumer decide whether a group message is for it without agent-name heuristics. Distinct from `mentions`, which lists the participants referenced in the body. Outbound messages leave this absent/false.\",\n      \"type\": \"boolean\"\n    },\n    \"mentions\": {\n      \"description\": \"OPTIONAL. @-mentions carried by the message, ordered to match the U+FFFC sentinel placeholders in `text`: the Nth U+FFFC binds to the Nth entry. Absent/empty when the message mentions no one. The producer is responsible for emitting one U+FFFC sentinel per mention, in order — translating each platform's native mention encoding into this neutral form.\",\n      \"items\": {\n        \"$ref\": \"#/$defs/Mention\"\n      },\n      \"type\": \"array\"\n    },\n    \"platform\": {\n      \"description\": \"OPTIONAL. Platform key the message belongs to (e.g. `signal`, `whatsapp`). Advisory.\",\n      \"minLength\": 1,\n      \"type\": \"string\"\n    },\n    \"prev\": {\n      \"$ref\": \"#/$defs/ChainLink\",\n      \"description\": \"OPTIONAL on the first message in a conversation; present on every message thereafter. Links to the previous message so the conversation forms a verifiable, ordered chain.\"\n    },\n    \"replyToId\": {\n      \"description\": \"OPTIONAL. The `id` of the message this one replies to.\",\n      \"minLength\": 1,\n      \"type\": \"string\"\n    },\n    \"sentAt\": {\n      \"description\": \"RFC 3339 timestamp the author asserts for this message.\",\n      \"format\": \"date-time\",\n      \"type\": \"string\"\n    },\n    \"text\": {\n      \"description\": \"OPTIONAL. Plain-text body. Absent for attachment-only messages.\",\n      \"maxLength\": 16384,\n      \"type\": \"string\"\n    }\n  },\n  \"required\": [\n    \"conversationId\",\n    \"direction\",\n    \"sentAt\"\n  ],\n  \"title\": \"Chat Message — payload\",\n  \"type\": \"object\"\n}\n",
    );
}
#[cfg(test)]
mod conformance {
    //! Round-trip tests harvested from the spec's `spec.md`,
    //! plus a `rejects_invalid_examples` test for any fixtures
    //! in `payload.invalid-examples.json` (validate feature).
    /// Each fixture in `payload.invalid-examples.json` MUST be
    /// rejected by at least one of: serde deserialization, or
    /// JSON-Schema validation under the `validate` feature. The
    /// fixture file documents the producer-side bug class that
    /// each payload exemplifies; this generated test pins it.
    #[cfg(feature = "validate")]
    #[test]
    fn rejects_invalid_examples() {
        use crate::validate::ValidatedPayload;
        let fixtures: &[(&str, &str)] = &[
            (
                "Empty payload omits required member(s): conversationId, direction, sentAt.",
                "{}",
            ),
            (
                "Unknown top-level member is rejected (additionalProperties: false).",
                "{\n  \"__notARealMember__\": true,\n  \"conversationId\": \"c-1\",\n  \"direction\": \"outbound\",\n  \"sentAt\": \"2026-06-16T00:00:00Z\"\n}",
            ),
            (
                "`direction` must be one of the enum values (inbound | outbound).",
                "{\n  \"conversationId\": \"c-1\",\n  \"direction\": \"sideways\",\n  \"sentAt\": \"2026-06-16T00:00:00Z\"\n}",
            ),
            (
                "`conversationId` has the wrong type (expected string).",
                "{\n  \"conversationId\": 12345,\n  \"direction\": \"inbound\",\n  \"sentAt\": \"2026-06-16T00:00:00Z\"\n}",
            ),
            (
                "`prev` is missing its required `digest` (an unverifiable chain link is rejected).",
                "{\n  \"conversationId\": \"c-1\",\n  \"direction\": \"outbound\",\n  \"prev\": {\n    \"id\": \"urn:uuid:prev\"\n  },\n  \"sentAt\": \"2026-06-16T00:00:00Z\"\n}",
            ),
            (
                "An attachment reference omits the required `mediaType`.",
                "{\n  \"attachments\": [\n    {\n      \"id\": \"att-1\"\n    }\n  ],\n  \"conversationId\": \"c-1\",\n  \"direction\": \"inbound\",\n  \"sentAt\": \"2026-06-16T00:00:00Z\"\n}",
            ),
            (
                "A mention omits the required opaque `participant` handle.",
                "{\n  \"conversationId\": \"c-1\",\n  \"direction\": \"inbound\",\n  \"mentions\": [\n    {\n      \"displayName\": \"Alice\",\n      \"length\": 1,\n      \"start\": 0\n    }\n  ],\n  \"sentAt\": \"2026-06-16T00:00:00Z\",\n  \"text\": \" hi\"\n}",
            ),
            (
                "A mention carries an unknown member (additionalProperties: false) — e.g. a raw address leaking in.",
                "{\n  \"conversationId\": \"c-1\",\n  \"direction\": \"inbound\",\n  \"mentions\": [\n    {\n      \"length\": 1,\n      \"number\": \"+15551112222\",\n      \"participant\": \"part-1\",\n      \"start\": 0\n    }\n  ],\n  \"sentAt\": \"2026-06-16T00:00:00Z\",\n  \"text\": \" hi\"\n}",
            ),
        ];
        for (i, (note, raw)) in fixtures.iter().enumerate() {
            let value: serde_json::Value = match serde_json::from_str(raw) {
                Ok(v) => v,
                Err(_) => continue,
            };
            let serde_ok = serde_json::from_value::<super::Payload>(value.clone()).is_ok();
            let schema_ok = super::Payload::validate_value(&value).is_ok();
            assert!(
                !(serde_ok && schema_ok),
                "invalid-example #{} ({:?}) was accepted by both serde and JSON Schema; \
                         the fixture's stated failure class is no longer caught:\n{}",
                i + 1,
                note,
                raw
            );
        }
    }
}