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use super::EntryType;
use super::Timestamp;
use crate::header;
use crate::header::HeaderInner;
use crate::header::ZomeId;
use crate::link::LinkTag;
use header::Dna;
use holo_hash::AgentPubKey;
use holo_hash::DnaHash;
use holo_hash::EntryHash;
use holo_hash::HeaderHash;
use holochain_serialized_bytes::SerializedBytes;
#[derive(Debug)]
pub struct HeaderBuilderCommon {
pub author: AgentPubKey,
pub timestamp: Timestamp,
pub header_seq: u32,
pub prev_header: HeaderHash,
}
impl HeaderBuilderCommon {
pub fn new(
author: AgentPubKey,
timestamp: Timestamp,
header_seq: u32,
prev_header: HeaderHash,
) -> Self {
Self {
author,
timestamp,
header_seq,
prev_header,
}
}
}
pub trait HeaderBuilder<H: HeaderInner>: Sized {
fn build(self, common: HeaderBuilderCommon) -> H;
}
macro_rules! builder_variant {
( $name: ident { $($field: ident : $t: ty),* $(,)? } ) => {
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct $name {
$(pub $field : $t),*
}
#[allow(clippy::new_without_default)]
impl $name {
pub fn new($($field : $t),* ) -> Self {
Self {
$($field),*
}
}
}
impl HeaderBuilder<header::$name> for $name {
fn build(self, common: HeaderBuilderCommon) -> header::$name {
let HeaderBuilderCommon {
author,
timestamp,
header_seq,
prev_header,
} = common;
header::$name {
author,
timestamp,
header_seq,
prev_header,
$($field : self.$field),*
}
}
}
impl From<($name, HeaderBuilderCommon)> for header::$name {
fn from((n, h): ($name, HeaderBuilderCommon)) -> header::$name {
n.build(h)
}
}
impl header::$name {
pub fn from_builder(common: HeaderBuilderCommon, $($field : $t),*) -> Self {
let HeaderBuilderCommon {
author,
timestamp,
header_seq,
prev_header,
} = common;
header::$name {
author,
timestamp,
header_seq,
prev_header,
$($field),*
}
}
}
}
}
builder_variant!(InitZomesComplete {});
builder_variant!(CreateLink {
base_address: EntryHash,
target_address: EntryHash,
zome_id: ZomeId,
tag: LinkTag,
});
builder_variant!(DeleteLink {
link_add_address: HeaderHash,
base_address: EntryHash,
});
builder_variant!(OpenChain {
prev_dna_hash: DnaHash,
});
builder_variant!(CloseChain {
new_dna_hash: DnaHash,
});
builder_variant!(Create {
entry_type: EntryType,
entry_hash: EntryHash,
});
builder_variant!(Update {
original_entry_address: EntryHash,
original_header_address: HeaderHash,
entry_type: EntryType,
entry_hash: EntryHash,
});
builder_variant!(Delete {
deletes_address: HeaderHash,
deletes_entry_address: EntryHash,
});
builder_variant!(AgentValidationPkg {
membrane_proof: Option<SerializedBytes>,
});
impl Dna {
pub fn from_builder(hash: DnaHash, builder: HeaderBuilderCommon) -> Self {
Self {
author: builder.author,
timestamp: builder.timestamp,
hash,
}
}
}