feat: add read/write

src/db.rs

@@ -8,6 +8,10 @@ pub struct Key {
     pub encrypted_key: String,
 }
 
+pub fn make_db_key_name(name: &str) -> String {
+    format!("value:{}", name)
+}
+
 pub fn open_db(db: &str) -> XResult<Connection> {
     let con = opt_result!(Connection::open(db), "Open sqlite db: {}, failed: {}", db);
     debugging!("Db auto commit: {}", con.is_autocommit());
@@ -41,6 +45,14 @@ pub fn insert_key(conn: &Connection, key: &Key) -> XResult<()> {
     Ok(())
 }
 
+pub fn update_key(conn: &Connection, key: &Key) -> XResult<()> {
+    let _ = conn.execute(
+        "UPDATE keys SET value = ?1 WHERE name = ?2",
+        (&key.encrypted_key, &key.name),
+    )?;
+    Ok(())
+}
+
 pub fn find_key(conn: &Connection, name: &str) -> XResult<Option<Key>> {
     let mut stmt = conn.prepare("SELECT id, name, value FROM keys WHERE name = ?1")?;
     let mut key_iter = stmt.query_map(params![name], |row| {