Added a bunch of things

src/services/_securities.rs

@@ -1,6 +1,26 @@
+use crate::db::external_id::SecurityId;
+use crate::db::securities::{list_securities, Security};
 use rusqlite::Connection;
+use serde::{Deserialize, Serialize};
 
-pub struct SecurityDTO {}
+#[derive(Serialize, Deserialize)]
+pub struct SecurityDTO {
+    id: SecurityId,
+    symbol: String,
+    name: String,
+    security_type: String,
+}
+
+impl SecurityDTO {
+    fn from_entity(sec: &Security) -> SecurityDTO {
+        SecurityDTO {
+            id: sec.id(),
+            symbol: sec.symbol(),
+            name: sec.name().to_string(),
+            security_type: sec.security_type().to_string(),
+        }
+    }
+}
 
 pub struct SecurityService<'a> {
     conn: &'a Connection,
@@ -12,6 +32,10 @@ impl SecurityService<'_> {
     }
 
     pub fn list_securities(self) -> Vec<SecurityDTO> {
-        vec![]
+        list_securities(self.conn)
+            .unwrap()
+            .iter()
+            .map(SecurityDTO::from_entity)
+            .collect()
     }
 }