Servers: Create or delete roles.

Members: Assign / un-assign multiple roles.
Servers: Routes to set permissions.

src/routes/servers/permissions_set_default.rs

@@ -0,0 +1,65 @@
+use mongodb::bson::doc;
+use rocket_contrib::json::Json;
+use serde::{Serialize, Deserialize};
+
+use crate::database::*;
+use crate::database::permissions::channel::ChannelPermission;
+use crate::database::permissions::server::ServerPermission;
+use crate::notifications::events::ClientboundNotification;
+use crate::util::result::{Error, Result};
+
+#[derive(Serialize, Deserialize)]
+pub struct Data {
+    server: u32,
+    channel: u32
+}
+
+#[put("/<target>/permissions/default", data = "<data>", rank = 1)]
+pub async fn req(user: User, target: Ref, data: Json<Data>) -> Result<()> {
+    let target = target.fetch_server().await?;
+
+    let perm = permissions::PermissionCalculator::new(&user)
+        .with_server(&target)
+        .for_server()
+        .await?;
+
+    if !perm.get_manage_roles() {
+        return Err(Error::MissingPermission);
+    }
+
+    let server_permissions: u32 = ServerPermission::View as u32 | data.server;
+    let channel_permissions: u32 = ChannelPermission::View as u32 | data.channel;
+    
+    get_collection("servers")
+        .update_one(
+            doc! { "_id": &target.id },
+            doc! {
+                "$set": {
+                    "default_permissions": [
+                        server_permissions as i32,
+                        channel_permissions as i32
+                    ]
+                }
+            },
+            None
+        )
+        .await
+        .map_err(|_| Error::DatabaseError {
+            operation: "update_one",
+            with: "server"
+        })?;
+    
+    ClientboundNotification::ServerUpdate {
+        id: target.id.clone(),
+        data: json!({
+            "default_permissions": [
+                server_permissions as i32,
+                channel_permissions as i32
+            ]
+        }),
+        clear: None
+    }
+    .publish(target.id);
+
+    Ok(())
+}