Fix how analytics writes are serialized (#5926)

apps/labrinth/src/models/v3/analytics.rs

@@ -1,4 +1,5 @@
 use clickhouse::Row;
+use derive_more::Display;
 use serde::{Deserialize, Serialize};
 use std::hash::Hash;
 use std::net::Ipv6Addr;
@@ -24,14 +25,18 @@ pub struct Download {
     pub user_agent: String,
     pub headers: Vec<(String, String)>,
 
-    // added retroactively - may be missing
-    pub reason: Option<DownloadReason>,
-    pub game_version: Option<String>,
-    pub loader: Option<String>,
+    // added retroactively - may be empty
+    pub reason: String,
+    pub game_version: String,
+    pub loader: String,
 }
 
 /// Why a project was downloaded.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize)]
+#[derive(
+    Debug, Display, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize,
+)]
+#[serde(rename_all = "snake_case")]
+#[display(rename_all = "snake_case")]
 pub enum DownloadReason {
     /// Project was downloaded directly by the user.
     Standalone,
@@ -95,8 +100,8 @@ pub struct Playtime {
     /// Parent modpack this playtime was recorded in
     pub parent: u64,
 
-    // added retroactively - may be missing
-    pub country: Option<String>,
+    // added retroactively - may be empty
+    pub country: String,
 }
 
 #[derive(Row, Serialize, Deserialize, Clone, Debug, Eq, PartialEq, Hash)]