Store the date when each texture was added

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

@@ -3,6 +3,8 @@
 #![allow(unused_variables)]
 #![allow(dead_code)]
 
+use serde::de::Error;
+use serde::{Deserialize, Deserializer, Serializer};
 use std::io;
 
 mod sha256;
@@ -11,16 +13,56 @@ pub use sha256::Sha256;
 mod texture_format;
 pub use texture_format::TextureFormat;
 
+#[derive(Clone, Debug, Eq, PartialEq, Hash, Ord, PartialOrd)]
+pub struct Date {
+    // Keep the order for correct comparison
+    pub year: u16,
+    pub month: u16,
+    pub day: u16,
+}
+
 #[derive(Eq, PartialEq, Clone, Serialize, Deserialize, Debug, Hash)]
+
 pub struct Texture {
     pub id: String,
     pub name: String,
     pub tags: Vec<String>,
     pub format: TextureFormat,
     pub resolution: (usize, usize),
+    #[serde(
+        serialize_with = "date_serialize",
+        deserialize_with = "date_deserialize"
+    )]
+    pub added_on: Date,
     pub texture_hash: Sha256,
 }
 
+fn date_serialize<S>(date: &Date, serializer: S) -> Result<S::Ok, S::Error>
+where
+    S: Serializer,
+{
+    let vector = vec![date.year, date.month, date.day];
+    serializer.serialize_some(&vector)
+}
+
+fn date_deserialize<'d, D>(deserializer: D) -> Result<Date, D::Error>
+where
+    D: Deserializer<'d>,
+{
+    let data = Vec::<u16>::deserialize(deserializer)?;
+    if data.len() != 3 {
+        Err(D::Error::custom(
+            "expected an array with three elements to form a date",
+        ))
+    } else {
+        Ok(Date {
+            year: data[0],
+            month: data[1],
+            day: data[2],
+        })
+    }
+}
+
 pub enum ReplaceTextureStatus {
     /// Done.
     Ok,