#[allow(unused_imports)]
use crate::spv_state::*;
use serde_derive::{Deserialize, Serialize};
use solana_sdk::pubkey::Pubkey;
#[derive(Debug, PartialEq, Eq, Clone)]
pub enum HeaderStoreError {
InvalidHeader,
GroupExists,
GroupDNE,
InvalidBlockHeight,
}
#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
pub struct HeaderStore {
pub index: Vec<Pubkey>,
pub group_size: u16,
pub base_height: u32,
pub top_height: u32,
pub owner: Pubkey,
}
impl HeaderStore {
pub fn get_group(self, block_height: u32) -> Result<Pubkey, HeaderStoreError> {
if block_height < self.base_height || block_height > self.top_height {
Err(HeaderStoreError::InvalidBlockHeight)
} else {
let gheight = (block_height - self.base_height) / u32::from(self.group_size);
let grouppk: Pubkey = self.index[gheight as usize];
Ok(grouppk)
}
}
pub fn top_group(self) -> Result<Pubkey, HeaderStoreError> {
if self.index.is_empty() {
Err(HeaderStoreError::GroupDNE)
} else {
let grouppk: Pubkey = *self.index.last().unwrap();
Ok(grouppk)
}
}
pub fn append_header(mut self, blockheader: &BlockHeader) -> Result<(), HeaderStoreError> {
match self.top_group() {
Ok(n) => {
let group = n;
Ok(())
}
Err(e) => {
if HeaderStoreError::GroupDNE == e {
Ok(())
} else {
Err(e)
}
}
}
}
pub fn replace_header(
mut self,
blockheader: &BlockHeader,
block_height: u32,
) -> Result<(), HeaderStoreError> {
match self.get_group(block_height) {
Err(e) => Err(HeaderStoreError::InvalidHeader),
Ok(n) => {
let group = n;
Ok(())
}
}
}
pub fn append_group(mut self, pubkey: Pubkey) -> Result<(), HeaderStoreError> {
if self.index.contains(&pubkey) {
Err(HeaderStoreError::GroupExists)
} else {
Ok(())
}
}
}
#[derive(Serialize, Deserialize, Debug, PartialEq, Eq, Clone)]
pub struct HeaderAccountInfo {
pub parent: Pubkey,
pub headers: Vec<BlockHeader>,
pub next: Option<Pubkey>,
}