double-clicking a model file (obj, stl, etc) will auto generate a file with an import statement and open it

src/wasm-lib/kcl/src/settings/types/file.rs

@@ -93,6 +93,44 @@
             .await
             .map_err(|e| anyhow::anyhow!("Error loading project from path {}: {:?}", source_path.display(), e))?;
 
+        // If we got a import model file, we need to check if we have a file in the project for
+        // this import model.
+        if crate::settings::utils::IMPORT_FILE_EXTENSIONS.contains(&ext) {
+            let import_file_name = source_path
+                .file_name()
+                .ok_or_else(|| anyhow::anyhow!("Error getting the file name of the file: {}", source_path.display()))?
+                .to_string_lossy()
+                .to_string();
+            // Check if we have a file in the project for this import model.
+            let kcl_wrapper_filename = format!("{}.kcl", import_file_name);
+            let kcl_wrapper_file_path = parent.join(&kcl_wrapper_filename);
+
+            if !kcl_wrapper_file_path.exists() {
+                // Create the file in the project.
+                // With the default import content.
+                tokio::fs::write(
+                    &kcl_wrapper_file_path,
+                    format!(
+                        r#"// This file was automatically generated by the application when you 
+// double-clicked on the model file.
+// You can edit this file to add your own content.
+// But we recommend you keep the import statement as it is.
+// For more information on the import statement, see the documentation at:
+// https://zoo.dev/docs/kcl/import
+const model = import("{}")"#,
+                        import_file_name
+                    )
+                    .as_bytes(),
+                )
+                .await?;
+            }
+
+            return Ok(ProjectState {
+                project,
+                current_file: Some(kcl_wrapper_file_path.display().to_string()),
+            });
+        }
+
         Ok(ProjectState {
             project,
             current_file: Some(source_path.display().to_string()),

src/wasm-lib/kcl/src/settings/utils.rs

@@ -8,14 +8,21 @@ use clap::ValueEnum;
 use crate::settings::types::file::FileEntry;
 
 lazy_static::lazy_static! {
-    pub static ref RELEVANT_EXTENSIONS: Vec<String> = {
-        let mut relevant_extensions = vec!["kcl".to_string(), "stp".to_string(), "glb".to_string(), "fbxb".to_string()];
+
+    pub static ref IMPORT_FILE_EXTENSIONS: Vec<String> = {
+        let mut import_file_extensions = vec!["stp".to_string(), "glb".to_string(), "fbxb".to_string()];
         let named_extensions = kittycad::types::FileImportFormat::value_variants()
             .iter()
             .map(|x| format!("{}", x))
             .collect::<Vec<String>>();
         // Add all the default import formats.
-        relevant_extensions.extend_from_slice(&named_extensions);
+        import_file_extensions.extend_from_slice(&named_extensions);
+        import_file_extensions
+    };
+
+    pub static ref RELEVANT_EXTENSIONS: Vec<String> = {
+        let mut relevant_extensions = IMPORT_FILE_EXTENSIONS.clone();
+        relevant_extensions.push("kcl".to_string());
         relevant_extensions
     };
 }