added stakeholder

src/stakeholder/stakeholder.rs

@@ -0,0 +1,35 @@
+use super::blockchain::{Blockchain, Block, BlockInfo};
+use super::util::time::Timestamp;
+
+#[derive(Copy,Debug,Default,Clone)]
+pub struct Stakeholder
+{
+    blockchain: Blockchain // stakeholder view of the blockchain
+}
+
+impl Stakeholder
+{
+    fn init() {
+        //TODO initialize the blockchain
+        let path = "/tmp";
+        let db = sled::open(path)?;
+        let ts = Timestamp::current_time();
+        let genesis_data = "data":
+        let genesis_hash = flake3::Hash(genesis_data.as_bytes());
+        let eta0 = flake3::Hash("let there be dark!");
+        self.blockchain = Blockchain::new(db, ts, genesis_hash, eta0.as_bytes());
+    }
+
+    fn add_block(&self, block: BlockInfo)
+    {
+        let blocks = [block];
+        self.blockchain.add(blocks);
+    }
+
+    fn get_eta(&self) -> pallas::Base
+    {
+        let last_proof_slot : u64 = 0;
+        let (sl, proof_tx_hash) = self.blockchain.last()?;
+        pallas::Base::from_bytes(proof_tx_hash.to_bytees())
+    }
+}