Model removal option

src/lib/components/STLViewer.svelte

@@ -3,6 +3,7 @@
 	import * as THREE from "three";
 	import { STLLoader } from "three/examples/jsm/loaders/STLLoader.js";
 	import { OBJLoader } from "three/examples/jsm/loaders/OBJLoader.js";
+	import { GLTFLoader } from "three/examples/jsm/loaders/GLTFLoader.js";
 	import { OrbitControls } from "three/examples/jsm/controls/OrbitControls.js";
 
 	interface Props {
@@ -95,6 +96,8 @@
 
 		if (extension === "obj") {
 			loadOBJ();
+		} else if (extension === "gltf" || extension === "glb") {
+			loadGLTF();
 		} else {
 			loadSTL();
 		}
@@ -161,6 +164,56 @@
 		);
 	}
 
+	function loadGLTF() {
+		const loader = new GLTFLoader();
+
+		loader.load(
+			modelPath,
+			(gltf) => {
+				const model = gltf.scene;
+
+				// Center the object
+				const box = new THREE.Box3().setFromObject(model);
+				const center = box.getCenter(new THREE.Vector3());
+				model.position.sub(center);
+
+				// Scale to fit
+				const size = box.getSize(new THREE.Vector3());
+				const maxDim = Math.max(size.x, size.y, size.z);
+				const scale = 50 / maxDim;
+				model.scale.set(scale, scale, scale);
+
+				// glTF models may have their own materials, apply default if missing
+				model.traverse((child) => {
+					if (child instanceof THREE.Mesh) {
+						if (
+							!child.material ||
+							(child.material as THREE.Material).type ===
+								"MeshBasicMaterial"
+						) {
+							child.material = new THREE.MeshPhongMaterial({
+								color: 0x3b82f6,
+								specular: 0x111111,
+								shininess: 50,
+							});
+						}
+					}
+				});
+
+				scene.add(model);
+
+				// Position camera
+				const distance = maxDim * scale * 2.5;
+				camera.position.set(distance, distance, distance);
+				controls.update();
+			},
+			undefined,
+			(err) => {
+				console.error("Error loading glTF:", err);
+			},
+		);
+	}
+
 	function addGeometryToScene(geometry: THREE.BufferGeometry) {
 		// Center the geometry
 		geometry.computeBoundingBox();

src/lib/components/prints/EditPrintModal.svelte

@@ -101,8 +101,12 @@
 			stlFile = input.files[0];
 			uploadStatus = stlFile.name;
 			uploadProgress = 0;
+			removeModel = false; // Reset remove flag if selecting new file
 		}
 	}
+
+	// Track if user wants to remove the model
+	let removeModel = $state(false);
 </script>
 
 <Modal title="Edit Print Log" {open} onclose={handleClose}>
@@ -121,6 +125,11 @@
 					}
 				}
 
+				// Handle model removal
+				if (removeModel) {
+					formData.set("remove_model", "true");
+				}
+
 				// Convert hours + minutes to total minutes
 				const hours = Number(formData.get("duration_hours") || 0);
 				const mins = Number(formData.get("duration_mins") || 0);
@@ -222,8 +231,9 @@
 					3D Model {print.stl_file ? "" : "(Optional)"}
 				</label>
 
-				{#if print.stl_file && browser && !stlFile}
+				{#if print.stl_file && browser && !stlFile && !removeModel}
 					<!-- Show existing STL viewer -->
+					<div class="relative">
 						<div
 							class="flex justify-center bg-slate-900 rounded-lg p-2"
 						>
@@ -235,9 +245,39 @@
 								/>
 							{/await}
 						</div>
+						<!-- Remove button overlay -->
+						<button
+							type="button"
+							class="absolute top-4 right-4 p-2 bg-red-500/80 hover:bg-red-500 text-white rounded-lg transition-colors"
+							onclick={() => (removeModel = true)}
+							title="Remove 3D model"
+						>
+							<Icon icon="mdi:delete" class="w-5 h-5" />
+						</button>
+					</div>
 					<p class="text-xs text-slate-500 text-center">
 						Click below to replace with a new model
 					</p>
+				{:else if removeModel && print.stl_file}
+					<!-- Removal confirmation -->
+					<div
+						class="p-4 rounded-lg bg-red-500/10 border border-red-500/30 text-center"
+					>
+						<Icon
+							icon="mdi:file-remove"
+							class="w-10 h-10 text-red-400 mx-auto mb-2"
+						/>
+						<p class="text-sm text-red-300 mb-3">
+							Model will be removed when you save
+						</p>
+						<button
+							type="button"
+							class="text-xs text-slate-400 hover:text-white underline"
+							onclick={() => (removeModel = false)}
+						>
+							Cancel removal
+						</button>
+					</div>
 				{/if}
 
 				<!-- Upload button or progress -->
@@ -280,7 +320,7 @@
 							</div>
 							<input
 								type="file"
-								accept=".stl,.obj"
+								accept=".stl,.obj,.gltf,.glb"
 								class="sr-only"
 								onchange={handleFileSelect}
 							/>

src/lib/components/prints/LogPrintModal.svelte

@@ -239,7 +239,7 @@
 						</div>
 						<input
 							type="file"
-							accept=".stl,.obj"
+							accept=".stl,.obj,.gltf,.glb"
 							class="sr-only"
 							onchange={handleFileSelect}
 						/>

src/routes/api/upload-stl/+server.ts

@@ -5,7 +5,7 @@ import { existsSync } from 'fs';
 import path from 'path';
 
 const UPLOAD_DIR = 'static/uploads/models';
-const ALLOWED_EXTENSIONS = ['.stl', '.obj'];
+const ALLOWED_EXTENSIONS = ['.stl', '.obj', '.gltf', '.glb'];
 
 export const POST: RequestHandler = async ({ request, locals }) => {
     if (!locals.user) {
@@ -24,7 +24,7 @@ export const POST: RequestHandler = async ({ request, locals }) => {
     const extension = '.' + fileName.split('.').pop();
     
     if (!ALLOWED_EXTENSIONS.includes(extension)) {
-        throw error(400, 'Only STL and OBJ files are allowed');
+        throw error(400, 'Only STL, OBJ, GLTF, and GLB files are allowed');
     }
 
     // Create upload directory if it doesn't exist

src/routes/prints/+page.server.ts

@@ -5,6 +5,9 @@ import { User } from '$lib/models/User';
 import { connectDB } from '$lib/server/db';
 import type { PageServerLoad, Actions } from './$types';
 import { fail, redirect } from '@sveltejs/kit';
+import { unlink } from 'fs/promises';
+import { existsSync } from 'fs';
+import path from 'path';
 
 export const load: PageServerLoad = async ({ locals }) => {
     if (!locals.user) throw redirect(303, '/login');
@@ -142,6 +145,7 @@ export const actions: Actions = {
         const printer_id = formData.get('printer_id');
         const spool_id = formData.get('spool_id');
         const stl_file = formData.get('stl_file');
+        const remove_model = formData.get('remove_model');
 
         if (!id || !name) {
             return fail(400, { missing: true });
@@ -218,9 +222,31 @@ export const actions: Actions = {
             if (spool_id) {
                 updateData.spool_id = spool_id;
             }
-            // Update STL file if provided
+            // Handle STL file: update if new one provided, or remove if requested
             if (stl_file) {
+                // If replacing an existing model, delete the old file
+                if (printJob.stl_file) {
+                    const oldFilePath = path.join('static', printJob.stl_file);
+                    if (existsSync(oldFilePath)) {
+                        try {
+                            await unlink(oldFilePath);
+                        } catch (e) {
+                            console.error('Failed to delete old model file:', e);
+                        }
+                    }
+                }
                 updateData.stl_file = stl_file;
+            } else if (remove_model === 'true' && printJob.stl_file) {
+                // Delete the file from disk
+                const filePath = path.join('static', printJob.stl_file);
+                if (existsSync(filePath)) {
+                    try {
+                        await unlink(filePath);
+                    } catch (e) {
+                        console.error('Failed to delete model file:', e);
+                    }
+                }
+                updateData.stl_file = null;
             }
 
             await PrintJob.findOneAndUpdate(
@@ -246,6 +272,21 @@ export const actions: Actions = {
         await connectDB();
 
         try {
+            // Find the print first to get the model file path
+            const printJob = await PrintJob.findOne({ _id: id, user_id: locals.user.id });
+            
+            if (printJob?.stl_file) {
+                // Delete the model file from disk
+                const filePath = path.join('static', printJob.stl_file);
+                if (existsSync(filePath)) {
+                    try {
+                        await unlink(filePath);
+                    } catch (e) {
+                        console.error('Failed to delete model file:', e);
+                    }
+                }
+            }
+            
             await PrintJob.findOneAndDelete({ _id: id, user_id: locals.user.id });
             return { success: true };
         } catch (error) {