Split up db and trie and added interface

database.go

@@ -7,12 +7,12 @@ import (
   "fmt"
 )
 
-type Database struct {
+type LDBDatabase struct {
   db        *leveldb.DB
   trie      *Trie
 }
 
-func NewDatabase() (*Database, error) {
+func NewLDBDatabase() (*LDBDatabase, error) {
   // This will eventually have to be something like a resource folder.
   // it works on my system for now. Probably won't work on Windows
   usr, _ := user.Current()
@@ -24,7 +24,7 @@ func NewDatabase() (*Database, error) {
     return nil, err
   }
 
-  database := &Database{db: db}
+  database := &LDBDatabase{db: db}
 
   // Bootstrap database. Sets a few defaults; such as the last block
   database.Bootstrap()
@@ -32,63 +32,25 @@ func NewDatabase() (*Database, error) {
   return database, nil
 }
 
-func (db *Database) Bootstrap() error {
+func (db *LDBDatabase) Bootstrap() error {
   db.trie = NewTrie(db)
 
   return nil
 }
 
-func (db *Database) Put(key []byte, value []byte) {
+func (db *LDBDatabase) Put(key []byte, value []byte) {
   err := db.db.Put(key, value, nil)
   if err != nil {
     fmt.Println("Error put", err)
   }
 }
 
-func (db *Database) Close() {
+func (db *LDBDatabase) Get(key []byte) ([]byte, error) {
+  return nil, nil
+}
+
+func (db *LDBDatabase) Close() {
   // Close the leveldb database
   db.db.Close()
 }
 
-type Trie struct {
-  root       string
-  db         *Database
-}
-
-func NewTrie(db *Database) *Trie {
-  return &Trie{db: db, root: ""}
-}
-
-func (t *Trie) Update(key string, value string) {
-  k := CompactHexDecode(key)
-
-  t.root = t.UpdateState(t.root, k, value)
-}
-
-func (t *Trie) Get(key []byte) ([]byte, error) {
-  return nil, nil
-}
-
-// Inserts a new sate or delete a state based on the value
-func (t *Trie) UpdateState(node, key, value string) string {
-  if value != "" {
-    return t.InsertState(node, key, value)
-  } else {
-    // delete it
-  }
-
-  return ""
-}
-
-func (t *Trie) InsertState(node, key, value string) string {
-  return ""
-}
-
-func (t *Trie) Put(node []byte) []byte {
-  enc := Encode(node)
-  sha := Sha256Bin(enc)
-
-  t.db.Put([]byte(sha), enc)
-
-  return sha
-}