trust-tasks-rs 0.1.1

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: `auth/challenge`. 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())
        }
    }
}
///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-]+)+$"
///  }
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(transparent)]
pub struct Ext(pub ::std::collections::HashMap<ExtKey, ::serde_json::Value>);
impl ::std::ops::Deref for Ext {
    type Target = ::std::collections::HashMap<ExtKey, ::serde_json::Value>;
    fn deref(&self) -> &::std::collections::HashMap<ExtKey, ::serde_json::Value> {
        &self.0
    }
}
impl ::std::convert::From<Ext> for ::std::collections::HashMap<ExtKey, ::serde_json::Value> {
    fn from(value: Ext) -> Self {
        value.0
    }
}
impl ::std::convert::From<&Ext> for Ext {
    fn from(value: &Ext) -> Self {
        value.clone()
    }
}
impl ::std::convert::From<::std::collections::HashMap<ExtKey, ::serde_json::Value>> for Ext {
    fn from(value: ::std::collections::HashMap<ExtKey, ::serde_json::Value>) -> Self {
        Self(value)
    }
}
///`ExtKey`
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "type": "string",
///  "pattern": "^[a-z][a-z0-9-]*(\\.[a-z0-9-]+)+$"
///}
/// ```
/// </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::convert::From<&ExtKey> for ExtKey {
    fn from(value: &ExtKey) -> Self {
        value.clone()
    }
}
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())
            })
    }
}
///Request a one-time challenge nonce that the subject will sign to prove control of their VID.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "$id": "https://trusttasks.org/spec/auth/challenge/0.1",
///  "title": "Payload",
///  "description": "Request a one-time challenge nonce that the subject will sign to prove control of their VID.",
///  "type": "object",
///  "properties": {
///    "ext": {
///      "description": "Ecosystem-defined extension members per SPEC.md §4.5.1.",
///      "$ref": "#/definitions/Ext"
///    },
///    "purpose": {
///      "description": "Producer-declared intent (e.g. \"login\", \"step-up\", \"sign-out\"). Consumers MAY surface this in audit logs or use it to scope the issued nonce. Free-form; ecosystems define the vocabulary.",
///      "type": "string",
///      "minLength": 1
///    },
///    "subject": {
///      "description": "The VID the producer intends to authenticate as. Optional — when omitted, the issuer MAY return a subject-agnostic challenge whose binding is established at authenticate time. When present, the issuer SHOULD bind the challenge to this subject so a successful authenticate proves control of THIS VID, not any VID.",
///      "type": "string",
///      "minLength": 1
///    }
///  },
///  "additionalProperties": false
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
pub struct Payload {
    ///Ecosystem-defined extension members per SPEC.md §4.5.1.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub ext: ::std::option::Option<Ext>,
    ///Producer-declared intent (e.g. "login", "step-up", "sign-out"). Consumers MAY surface this in audit logs or use it to scope the issued nonce. Free-form; ecosystems define the vocabulary.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub purpose: ::std::option::Option<PayloadPurpose>,
    ///The VID the producer intends to authenticate as. Optional — when omitted, the issuer MAY return a subject-agnostic challenge whose binding is established at authenticate time. When present, the issuer SHOULD bind the challenge to this subject so a successful authenticate proves control of THIS VID, not any VID.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub subject: ::std::option::Option<PayloadSubject>,
}
impl ::std::convert::From<&Payload> for Payload {
    fn from(value: &Payload) -> Self {
        value.clone()
    }
}
impl ::std::default::Default for Payload {
    fn default() -> Self {
        Self {
            ext: Default::default(),
            purpose: Default::default(),
            subject: Default::default(),
        }
    }
}
///Producer-declared intent (e.g. "login", "step-up", "sign-out"). Consumers MAY surface this in audit logs or use it to scope the issued nonce. Free-form; ecosystems define the vocabulary.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "Producer-declared intent (e.g. \"login\", \"step-up\", \"sign-out\"). Consumers MAY surface this in audit logs or use it to scope the issued nonce. Free-form; ecosystems define the vocabulary.",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct PayloadPurpose(::std::string::String);
impl ::std::ops::Deref for PayloadPurpose {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<PayloadPurpose> for ::std::string::String {
    fn from(value: PayloadPurpose) -> Self {
        value.0
    }
}
impl ::std::convert::From<&PayloadPurpose> for PayloadPurpose {
    fn from(value: &PayloadPurpose) -> Self {
        value.clone()
    }
}
impl ::std::str::FromStr for PayloadPurpose {
    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 PayloadPurpose {
    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 PayloadPurpose {
    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 PayloadPurpose {
    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 PayloadPurpose {
    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())
            })
    }
}
///The VID the producer intends to authenticate as. Optional — when omitted, the issuer MAY return a subject-agnostic challenge whose binding is established at authenticate time. When present, the issuer SHOULD bind the challenge to this subject so a successful authenticate proves control of THIS VID, not any VID.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "The VID the producer intends to authenticate as. Optional — when omitted, the issuer MAY return a subject-agnostic challenge whose binding is established at authenticate time. When present, the issuer SHOULD bind the challenge to this subject so a successful authenticate proves control of THIS VID, not any VID.",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct PayloadSubject(::std::string::String);
impl ::std::ops::Deref for PayloadSubject {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<PayloadSubject> for ::std::string::String {
    fn from(value: PayloadSubject) -> Self {
        value.0
    }
}
impl ::std::convert::From<&PayloadSubject> for PayloadSubject {
    fn from(value: &PayloadSubject) -> Self {
        value.clone()
    }
}
impl ::std::str::FromStr for PayloadSubject {
    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 PayloadSubject {
    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 PayloadSubject {
    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 PayloadSubject {
    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 PayloadSubject {
    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())
            })
    }
}
///Issued by the auth service in reply to a challenge request. Carried in a Trust Task document whose type is https://trusttasks.org/spec/auth/challenge/0.1#response.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "title": "Response",
///  "description": "Issued by the auth service in reply to a challenge request. Carried in a Trust Task document whose type is https://trusttasks.org/spec/auth/challenge/0.1#response.",
///  "type": "object",
///  "required": [
///    "challenge",
///    "expiresAt",
///    "sessionId"
///  ],
///  "properties": {
///    "challenge": {
///      "description": "base64url-encoded one-time nonce. MUST be at least 128 bits of entropy. The subject embeds this value into the auth/authenticate document they sign.",
///      "type": "string",
///      "minLength": 16
///    },
///    "expiresAt": {
///      "description": "ISO-8601 timestamp after which the challenge MUST NOT be accepted. Issuers SHOULD pick a window between 30 seconds and 5 minutes.",
///      "type": "string",
///      "format": "date-time"
///    },
///    "ext": {
///      "description": "Ecosystem-defined extension members per SPEC.md §4.5.1.",
///      "$ref": "#/definitions/Ext"
///    },
///    "sessionId": {
///      "description": "Opaque, server-chosen identifier correlating this challenge with the subsequent authenticate call. The subject MUST echo it back unchanged. Consumers MUST treat the value as opaque.",
///      "type": "string",
///      "minLength": 1
///    }
///  },
///  "additionalProperties": false,
///  "$anchor": "response"
///}
/// ```
/// </details>
#[derive(::serde::Deserialize, ::serde::Serialize, Clone, Debug)]
#[serde(deny_unknown_fields)]
pub struct Response {
    ///base64url-encoded one-time nonce. MUST be at least 128 bits of entropy. The subject embeds this value into the auth/authenticate document they sign.
    pub challenge: ResponseChallenge,
    ///ISO-8601 timestamp after which the challenge MUST NOT be accepted. Issuers SHOULD pick a window between 30 seconds and 5 minutes.
    #[serde(rename = "expiresAt")]
    pub expires_at: ::chrono::DateTime<::chrono::offset::Utc>,
    ///Ecosystem-defined extension members per SPEC.md §4.5.1.
    #[serde(default, skip_serializing_if = "::std::option::Option::is_none")]
    pub ext: ::std::option::Option<Ext>,
    ///Opaque, server-chosen identifier correlating this challenge with the subsequent authenticate call. The subject MUST echo it back unchanged. Consumers MUST treat the value as opaque.
    #[serde(rename = "sessionId")]
    pub session_id: ResponseSessionId,
}
impl ::std::convert::From<&Response> for Response {
    fn from(value: &Response) -> Self {
        value.clone()
    }
}
///base64url-encoded one-time nonce. MUST be at least 128 bits of entropy. The subject embeds this value into the auth/authenticate document they sign.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "base64url-encoded one-time nonce. MUST be at least 128 bits of entropy. The subject embeds this value into the auth/authenticate document they sign.",
///  "type": "string",
///  "minLength": 16
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct ResponseChallenge(::std::string::String);
impl ::std::ops::Deref for ResponseChallenge {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<ResponseChallenge> for ::std::string::String {
    fn from(value: ResponseChallenge) -> Self {
        value.0
    }
}
impl ::std::convert::From<&ResponseChallenge> for ResponseChallenge {
    fn from(value: &ResponseChallenge) -> Self {
        value.clone()
    }
}
impl ::std::str::FromStr for ResponseChallenge {
    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());
        }
        Ok(Self(value.to_string()))
    }
}
impl ::std::convert::TryFrom<&str> for ResponseChallenge {
    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 ResponseChallenge {
    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 ResponseChallenge {
    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 ResponseChallenge {
    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, server-chosen identifier correlating this challenge with the subsequent authenticate call. The subject MUST echo it back unchanged. Consumers MUST treat the value as opaque.
///
/// <details><summary>JSON schema</summary>
///
/// ```json
///{
///  "description": "Opaque, server-chosen identifier correlating this challenge with the subsequent authenticate call. The subject MUST echo it back unchanged. Consumers MUST treat the value as opaque.",
///  "type": "string",
///  "minLength": 1
///}
/// ```
/// </details>
#[derive(::serde::Serialize, Clone, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)]
#[serde(transparent)]
pub struct ResponseSessionId(::std::string::String);
impl ::std::ops::Deref for ResponseSessionId {
    type Target = ::std::string::String;
    fn deref(&self) -> &::std::string::String {
        &self.0
    }
}
impl ::std::convert::From<ResponseSessionId> for ::std::string::String {
    fn from(value: ResponseSessionId) -> Self {
        value.0
    }
}
impl ::std::convert::From<&ResponseSessionId> for ResponseSessionId {
    fn from(value: &ResponseSessionId) -> Self {
        value.clone()
    }
}
impl ::std::str::FromStr for ResponseSessionId {
    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 ResponseSessionId {
    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 ResponseSessionId {
    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 ResponseSessionId {
    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 ResponseSessionId {
    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())
            })
    }
}
impl crate::Payload for Payload {
    const TYPE_URI: &'static str = "https://trusttasks.org/spec/auth/challenge/0.1";
}
impl crate::Payload for Response {
    const TYPE_URI: &'static str = "https://trusttasks.org/spec/auth/challenge/0.1#response";
}
#[cfg(feature = "validate")]
impl crate::validate::ValidatedPayload for Payload {
    const SCHEMA_JSON: &'static str = "{\n  \"$defs\": {\n    \"Ext\": {\n      \"additionalProperties\": true,\n      \"description\": \"Vendor-namespaced extension object per SPEC.md §4.5.1. Each immediate key MUST be a reverse-DNS namespace; structure under each namespace is opaque to the framework.\",\n      \"minProperties\": 1,\n      \"propertyNames\": {\n        \"pattern\": \"^[a-z][a-z0-9-]*(\\\\.[a-z0-9-]+)+$\"\n      },\n      \"title\": \"Ext\",\n      \"type\": \"object\"\n    },\n    \"Response\": {\n      \"$anchor\": \"response\",\n      \"additionalProperties\": false,\n      \"description\": \"Issued by the auth service in reply to a challenge request. Carried in a Trust Task document whose type is https://trusttasks.org/spec/auth/challenge/0.1#response.\",\n      \"properties\": {\n        \"challenge\": {\n          \"description\": \"base64url-encoded one-time nonce. MUST be at least 128 bits of entropy. The subject embeds this value into the auth/authenticate document they sign.\",\n          \"minLength\": 16,\n          \"type\": \"string\"\n        },\n        \"expiresAt\": {\n          \"description\": \"ISO-8601 timestamp after which the challenge MUST NOT be accepted. Issuers SHOULD pick a window between 30 seconds and 5 minutes.\",\n          \"format\": \"date-time\",\n          \"type\": \"string\"\n        },\n        \"ext\": {\n          \"$ref\": \"#/$defs/Ext\",\n          \"description\": \"Ecosystem-defined extension members per SPEC.md §4.5.1.\"\n        },\n        \"sessionId\": {\n          \"description\": \"Opaque, server-chosen identifier correlating this challenge with the subsequent authenticate call. The subject MUST echo it back unchanged. Consumers MUST treat the value as opaque.\",\n          \"minLength\": 1,\n          \"type\": \"string\"\n        }\n      },\n      \"required\": [\n        \"challenge\",\n        \"sessionId\",\n        \"expiresAt\"\n      ],\n      \"title\": \"Auth Challenge — response payload\",\n      \"type\": \"object\"\n    }\n  },\n  \"$id\": \"https://trusttasks.org/spec/auth/challenge/0.1\",\n  \"$schema\": \"https://json-schema.org/draft/2020-12/schema\",\n  \"additionalProperties\": false,\n  \"description\": \"Request a one-time challenge nonce that the subject will sign to prove control of their VID.\",\n  \"properties\": {\n    \"ext\": {\n      \"$ref\": \"#/$defs/Ext\",\n      \"description\": \"Ecosystem-defined extension members per SPEC.md §4.5.1.\"\n    },\n    \"purpose\": {\n      \"description\": \"Producer-declared intent (e.g. \\\"login\\\", \\\"step-up\\\", \\\"sign-out\\\"). Consumers MAY surface this in audit logs or use it to scope the issued nonce. Free-form; ecosystems define the vocabulary.\",\n      \"minLength\": 1,\n      \"type\": \"string\"\n    },\n    \"subject\": {\n      \"description\": \"The VID the producer intends to authenticate as. Optional — when omitted, the issuer MAY return a subject-agnostic challenge whose binding is established at authenticate time. When present, the issuer SHOULD bind the challenge to this subject so a successful authenticate proves control of THIS VID, not any VID.\",\n      \"minLength\": 1,\n      \"type\": \"string\"\n    }\n  },\n  \"title\": \"Auth — Challenge\",\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).
    #[test]
    fn response_example_1() {
        const JSON: &str = "{\n  \"id\": \"f1a2b3c4-d5e6-7890-1234-567890abcdef\",\n  \"type\": \"https://trusttasks.org/spec/auth/challenge/0.1#response\",\n  \"threadId\": \"9c1f4a2d-5e3b-4b2f-9bb9-7c1d2e3f4a5b\",\n  \"issuer\": \"did:web:auth.example\",\n  \"recipient\": \"did:web:alice.example\",\n  \"issuedAt\": \"2026-05-23T10:00:00Z\",\n  \"payload\": {\n    \"challenge\": \"ZGN3RvOXh0c3JydWxsbmJzcmVxdHJjQVZjbA\",\n    \"sessionId\": \"ec5d3c89-3f49-49b2-9d7d-2a8c0a8a7b9b\",\n    \"expiresAt\": \"2026-05-23T10:02:00Z\"\n  }\n}\n";
        let doc: crate::TrustTask<super::Response> =
            serde_json::from_str(JSON).expect("deserialize response example");
        let rendered = serde_json::to_value(&doc).expect("re-serialize");
        let expected: serde_json::Value = serde_json::from_str(JSON).expect("re-parse expected");
        assert_eq!(rendered, expected, "response example failed round-trip");
    }
    /// 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)] = &[
            (
                "Unknown top-level payload member — additionalProperties: false rejects 'extra'.",
                "{\n  \"extra\": \"not-allowed\",\n  \"subject\": \"did:web:alice.example\"\n}",
            ),
            (
                "Bare/unnamespaced ext key — every immediate child of ext MUST be reverse-DNS namespaced (SPEC §4.5.1).",
                "{\n  \"ext\": {\n    \"bare-key\": {\n      \"anything\": \"here\"\n    }\n  }\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
            );
        }
    }
}