Meta 2 way sync

src/change_processor.rs

@@ -11,10 +11,11 @@ use rbx_dom_weak::types::{Ref, Variant};
 
 use crate::{
     message_queue::MessageQueue,
+    resolution::UnresolvedValue,
     snapshot::{
         apply_patch_set, compute_patch_set, AppliedPatchSet, InstigatingSource, PatchSet, RojoTree,
     },
-    snapshot_middleware::{snapshot_from_vfs, snapshot_project_node},
+    snapshot_middleware::{meta_file::AdjacentMetadata, snapshot_from_vfs, snapshot_project_node},
 };
 
 /// Processes file change events, updates the DOM, and sends those updates
@@ -193,6 +194,13 @@ impl JobThreadContext {
                     }
 
                     for (key, changed_value) in &update.changed_properties {
+                        let mut meta_path = None;
+                        for path in instance.metadata().relevant_paths.iter() {
+                            if path.to_str().unwrap().ends_with(".meta.json") {
+                                meta_path = Some(path);
+                                break;
+                            }
+                        }
                         if key == "Source" {
                             if let Some(instigating_source) =
                                 &instance.metadata().instigating_source
@@ -218,8 +226,36 @@ impl JobThreadContext {
                                     id
                                 );
                             }
+                        } else if let Some(meta_path) = meta_path {
+                            if let Some(meta_contents) =
+                                self.vfs.read(&meta_path).with_not_found().unwrap()
+                            {
+                                let mut metadata =
+                                    AdjacentMetadata::from_slice(&meta_contents, meta_path.clone())
+                                        .unwrap();
+                                metadata.properties.insert(
+                                    key.clone(),
+                                    UnresolvedValue::FullyQualified(
+                                        changed_value.as_ref().unwrap().clone(),
+                                    ),
+                                );
+                                let data = serde_json::to_string_pretty(&metadata).unwrap();
+                                fs::write(meta_path, data).unwrap();
+                            } else {
+                                let mut metadata = AdjacentMetadata::new(meta_path.clone());
+                                metadata.properties.insert(
+                                    key.clone(),
+                                    UnresolvedValue::FullyQualified(
+                                        changed_value.as_ref().unwrap().clone(),
+                                    ),
+                                );
+                                let data = serde_json::to_string_pretty(&metadata).unwrap();
+                                fs::write(meta_path, data).unwrap();
+                            }
                         } else {
-                            log::warn!("Cannot change properties besides BaseScript.Source.");
+                            log::warn!(
+                                "Cannot change properties of instances with no meta support"
+                            );
                         }
                     }
                 } else {

src/snapshot_middleware/meta_file.rs

@@ -25,8 +25,15 @@ pub struct AdjacentMetadata {
     #[serde(skip)]
     pub path: PathBuf,
 }
-
 impl AdjacentMetadata {
+    pub fn new(path: PathBuf) -> AdjacentMetadata {
+        AdjacentMetadata {
+            ignore_unknown_instances: None,
+            properties: HashMap::new(),
+            attributes: HashMap::new(),
+            path: path,
+        }
+    }
     pub fn from_slice(slice: &[u8], path: PathBuf) -> anyhow::Result<Self> {
         let mut meta: Self = serde_json::from_slice(slice).with_context(|| {
             format!(

src/snapshot_middleware/mod.rs

@@ -10,7 +10,7 @@ mod dir;
 mod json;
 mod json_model;
 mod lua;
-mod meta_file;
+pub mod meta_file;
 mod project;
 mod rbxm;
 mod rbxmx;