acdc 0.1.0

Authentic Chained Data Containers
Documentation 
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use std::str::FromStr;

use indexmap::IndexMap;
use said::{
    derivation::HashFunctionCode, sad::SAD, version::format::SerializationFormats,
    SelfAddressingIdentifier,
};
use serde::{Deserialize, Serialize};

use crate::{error::Error, salt::new_uuid};

#[derive(Serialize, SAD, Default, Debug, Clone, PartialEq, Deserialize)]
pub struct AttributesBlock {
    #[said]
    #[serde(rename = "d")]
    pub said: Option<SelfAddressingIdentifier>,
    #[serde(rename = "i", skip_serializing_if = "Option::is_none")]
    pub target: Option<String>,
    #[serde(rename = "u", skip_serializing_if = "Option::is_none")]
    pub uuid: Option<String>,
    #[serde(rename = "a")]
    pub data: InlineAttributes,
}

impl AttributesBlock {
    pub fn attributes(&self) -> IndexMap<String, serde_json::Value> {
        self.data.0.clone()
    }
}

#[derive(Serialize, Default, Debug, Clone, PartialEq, Deserialize)]
pub struct InlineAttributes(IndexMap<String, serde_json::Value>);
impl InlineAttributes {
    pub fn to_untargeted_public_block(self) -> Attributes {
        let mut attr = AttributesBlock {
            said: None,
            uuid: None,
            target: None,
            data: self,
        };
        attr.compute_digest(&HashFunctionCode::Blake3_256, &SerializationFormats::JSON);
        Attributes::Inline(attr)
    }
    pub fn to_targeted_public_block(self, target: String) -> Attributes {
        let mut attr = AttributesBlock {
            said: None,
            uuid: None,
            target: Some(target),
            data: self,
        };
        attr.compute_digest(&HashFunctionCode::Blake3_256, &SerializationFormats::JSON);
        Attributes::Inline(attr)
    }

    pub fn to_untargeted_private_block(self) -> Attributes {
        let mut attr = AttributesBlock {
            said: None,
            uuid: Some(new_uuid()),
            target: None,
            data: self,
        };
        attr.compute_digest(&HashFunctionCode::Blake3_256, &SerializationFormats::JSON);
        Attributes::Inline(attr)
    }
    pub fn to_targeted_private_block(self, target: String) -> Attributes {
        let mut attr = AttributesBlock {
            said: None,
            uuid: Some(new_uuid()),
            target: Some(target),
            data: self,
        };
        attr.compute_digest(&HashFunctionCode::Blake3_256, &SerializationFormats::JSON);
        Attributes::Inline(attr)
    }
}

/// Attestation attributes.
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
#[serde(untagged)]
pub enum Attributes {
    /// Inlined attributes as a JSON object.
    Inline(AttributesBlock),
    /// External attributes identified by their [`SelfAddressingIdentifier`].
    External(SelfAddressingIdentifier),
}

impl InlineAttributes {
    pub fn insert(&mut self, key: String, value: serde_json::Value) {
        self.0.insert(key, value);
    }
}

impl FromStr for InlineAttributes {
    type Err = Error;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        let attributes: IndexMap<String, serde_json::Value> =
            serde_json::from_str(s).map_err(|_e| Error::ParseError)?;
        Ok(Self(attributes))
    }
}

impl Attributes {
    pub fn new_inline(attributes: AttributesBlock) -> Self {
        Attributes::Inline(attributes)
    }
}