create skeleton for server from design

server/texture-sync-server/src/protocol/mod.rs

@@ -0,0 +1,52 @@
+// TODO: remove on implementation
+#![allow(unused_imports)]
+#![allow(unused_variables)]
+#![allow(dead_code)]
+
+use crate::model::*;
+
+use std::sync::Arc;
+use std::io;
+
+pub enum ReplaceTextureStatus {
+    // Call Again With Texture Binary
+    NeedTextureData,
+    // Done.
+    Ok,
+}
+
+pub type ProtocolResult<T> = Result<T, ProtocolError>;
+pub enum ProtocolError {
+    BadRequest(String),
+    FileNotFound(String),
+    Conflict(String),
+    InternalServerError(std::io::Error),
+    NotImplemented,
+}
+
+pub trait ProtocolHandler: Send + Sync {
+    fn query(&mut self, query: &[String]) -> ProtocolResult<Vec<Texture>>;
+
+    fn get_texture_by_id(&mut self, id: String) -> ProtocolResult<Option<Texture>>;
+
+    fn get_texture_by_name(&mut self, id: String) -> ProtocolResult<Option<Texture>>;
+
+    fn get_texture_file(&mut self, hash: Sha256) -> ProtocolResult<Arc<Vec<u8>>>;
+
+    fn get_texture_preview(&mut self, hash: Sha256) -> ProtocolResult<Arc<Vec<u8>>>;
+
+    fn replace_texture(
+        &mut self,
+        delete: Option<Texture>,
+        insert: Option<Texture>,
+        insert_texture_data: Option<Vec<u8>>,
+    ) -> ProtocolResult<ReplaceTextureStatus>;
+}
+
+pub struct ProtocolConfig {
+    pub port: u16,
+}
+
+pub fn listen_forever(handler: &ProtocolHandler) -> io::Result<()> {
+    unimplemented!()
+}