add: user stacks

crates/core/src/model/stacks.rs

@@ -0,0 +1,40 @@
+use serde::{Serialize, Deserialize};
+use tetratto_shared::{snow::Snowflake, unix_epoch_timestamp};
+
+#[derive(Debug, Serialize, Deserialize, PartialEq, Eq)]
+pub enum StackPrivacy {
+    /// Can be viewed by anyone.
+    Public,
+    /// Can only be viewed by the stack's owner (and users with `MANAGE_STACKS`).
+    Private,
+}
+
+impl Default for StackPrivacy {
+    fn default() -> Self {
+        Self::Private
+    }
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct UserStack {
+    pub id: usize,
+    pub created: usize,
+    pub owner: usize,
+    pub name: String,
+    pub users: Vec<usize>,
+    pub privacy: StackPrivacy,
+}
+
+impl UserStack {
+    /// Create a new [`UserStack`].
+    pub fn new(name: String, owner: usize, users: Vec<usize>) -> Self {
+        Self {
+            id: Snowflake::new().to_string().parse::<usize>().unwrap(),
+            created: unix_epoch_timestamp() as usize,
+            owner,
+            name,
+            users,
+            privacy: StackPrivacy::default(),
+        }
+    }
+}