Refactor store crate

crates/store/src/calendar.rs

@@ -1,35 +0,0 @@
-use chrono::NaiveDateTime;
-use serde::{Deserialize, Serialize};
-
-#[derive(Debug, Default, Clone, Deserialize, Serialize)]
-pub struct Calendar {
-    pub principal: String,
-    pub id: String,
-    pub displayname: Option<String>,
-    pub order: i64,
-    pub description: Option<String>,
-    pub color: Option<String>,
-    pub timezone: Option<String>,
-    pub deleted_at: Option<NaiveDateTime>,
-    pub synctoken: i64,
-}
-
-impl Calendar {
-    pub fn format_synctoken(&self) -> String {
-        format_synctoken(self.synctoken)
-    }
-}
-
-const SYNC_NAMESPACE: &str = "github.com/lennart-k/rustical/ns/";
-
-pub fn format_synctoken(synctoken: i64) -> String {
-    format!("{}{}", SYNC_NAMESPACE, synctoken)
-}
-
-pub fn parse_synctoken(synctoken: &str) -> Option<i64> {
-    if !synctoken.starts_with(SYNC_NAMESPACE) {
-        return None;
-    }
-    let (_, synctoken) = synctoken.split_at(SYNC_NAMESPACE.len());
-    synctoken.parse::<i64>().ok()
-}