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use std::collections::HashMap;
use anyhow::Result;
use daglib::Node as _;
use cid::Cid;
use crate::backend::Id;
use crate::backend::Node;
use crate::backend::IpfsEmbedBackend;
pub struct Profile {
dag: daglib::AsyncDag<Id, Node, IpfsEmbedBackend>,
cache: HashMap<cid::Cid, LoadedNode>,
}
impl Profile {
pub async fn load(head: Id) -> Result<Self> {
let backend = IpfsEmbedBackend::new_in_memory(1000).await?;
let dag = daglib::AsyncDag::load(backend, head).await?;
let cache = HashMap::new();
Ok(Profile { dag, cache })
}
pub async fn create(node: Node) -> Result<Self> {
let backend = IpfsEmbedBackend::new_in_memory(1000).await?;
let dag = daglib::AsyncDag::new(backend, node).await?;
let cache = HashMap::new();
Ok(Profile { dag, cache })
}
}
pub struct LoadedNode {
v: String,
parents: Vec<crate::backend::Id>,
payload: crate::backend::Payload,
}
impl LoadedNode {
async fn load_from_node(backend: &IpfsEmbedBackend, cid: &Cid) -> Result<LoadedNode> {
let ipfs = backend.ipfs();
let node = {
let block = ipfs.fetch(cid).await?;
block.decode::<libipld::cbor::DagCborCodec, crate::backend::Node>()?
};
let payload = {
let block = ipfs.fetch(node.payload_id()).await?;
block.decode::<libipld::cbor::DagCborCodec, crate::backend::Payload>()?
};
Ok({
LoadedNode {
v: node.version().to_string(),
parents: node.parent_ids().clone(),
payload
}
})
}
}
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