README.md

@@ -1,4 +1,88 @@
 # mxpic_EDA
 The EDA coding for the layout for optihk
 # requirements
-flask
+flask
+
+# Frontend - backend GDS bridge
+Each canvas in the fronend should create a same name **.yaml** file.
+This **.yaml** should contain the following parts.
+
+- basic description : name, type, version
+- ports : the output connection ports for this canvas object
+- instances : the instance objects from **PDK** or other **canvas**, together with their **x, y, a, mirror** informations.
+- bundles : 1-1 or N-N conenctions that used for auto routing. "***This***"  refers to the canvas ports. 
+
+```
+[ Project Canvas ]
+     │  (Contains instances of Component A and Component B)
+     ▼
+[ Component A Canvas ]
+     │  (Contains instances of DC_2x2 and Ubend)
+     ▼
+[ PDK Primitives ] ──> (Loads raw .gds + physical port data .yml)
+```
+
+``` yaml
+# ==========================================
+# mxPIC Cell/Project Definition File
+# ==========================================
+name: MMI_Splitter_Module # Name of this cell/component/project
+type: composite          # "primitive" (PDK base) or "composite" (hierarchical)
+version: "1.0.0"
+
+# 1. External Ports (How this cell connects to the outside world)
+ports:
+  - name: in0
+    layer: WG_CORE
+    x: 0.0
+    y: 0.0
+    angle: 180.0
+    width: 0.5
+  - name: out0
+    layer: WG_CORE
+    x: 100.0
+    y: 10.0
+    angle: 0.0
+    width: 0.5
+  - name: out1
+    layer: WG_CORE
+    x: 100.0
+    y: -10.0
+    angle: 0.0
+    width: 0.5
+
+# 2. Instances (The sub-components dropped onto this canvas)
+instances:
+  mmi_inst1:
+    component: MMI_2x2     # References another PDK cell or composite YAML
+    x: 20.0                 # Placement origin X
+    y: 0.0                 # Placement origin Y
+    rotation: 0.0          # Rotation angle in degrees
+    mirror: false          # True/False for layout mirroring
+    settings:              # Local parameter overrides if parametric
+      length: 25.5
+      
+  ubend_top:
+    component: Ubend
+    x: 60.0
+    y: 5.0
+    rotation: 0.0
+    mirror: false
+
+  ubend_bottom:
+    component: Ubend
+    x: 60.0
+    y: -5.0
+    rotation: 0.0
+    mirror: true           # Flipped for symmetrical routing
+
+# 3. Bundles (Grouped links for multi-bus/parallel routing)
+bundles:
+  output_bus:
+    routing_type: euler_bend # Metadata for the backend router
+    links:
+      - from: ubend_top:out0
+        to: this:out0
+      - from: ubend_bottom:out0
+        to: this:out1
+```

backend/dir_test.py

@@ -0,0 +1,79 @@
+import os
+import yaml
+from collections import OrderedDict
+from flask import Flask, jsonify, send_from_directory, request, redirect, url_for, session, render_template
+from werkzeug.security import check_password_hash
+import database  
+
+# --- Path Configurations ---
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+FRONTEND_DIR = os.path.join(BASE_DIR, '..', 'frontend')
+
+YML_PATH = os.path.join(BASE_DIR, '..', 'mxpic', 'PDKs', 'Silterra', 'directories.yaml')
+COMPS_ROOT = os.path.join(BASE_DIR, '..', 'mxpic', 'PDKs', 'Silterra')
+# Define where your new icons folder is located (adjust if it's placed elsewhere)
+ICONS_DIR = os.path.join(BASE_DIR, 'icons') 
+
+app = Flask(__name__, template_folder=FRONTEND_DIR, static_folder=FRONTEND_DIR)
+app.secret_key = 'super_secret_mxpic_key' 
+app.json.sort_keys = False  
+
+database.init_db()
+
+# ... [Keep countSpaces and buildTree exactly as they are] ...
+
+def findComps(baseDir):
+    """Scan component folders, return map of paths -> component info."""
+    compMap = {}
+    refDir = baseDir
+    for root, dirs, files in os.walk(baseDir):
+        ymlFiles = [f for f in files if f.endswith('.yml')]
+        if ymlFiles:
+            parentDir = os.path.dirname(root)
+            relPath = os.path.relpath(parentDir, refDir)
+            parts = () if relPath == '.' else tuple(relPath.split(os.sep))
+            compName = os.path.basename(root)
+            
+            # Extract the category (the mother folder's name)
+            category = os.path.basename(parentDir)
+            
+            compMap[parts] = {
+                'folder': compName,
+                'yml': ymlFiles[0],
+                'category': category # Save the category to the map
+            }
+            dirs.clear()
+    return compMap
+
+def addCompsToTree(compMap):
+    """Build a completely fresh tree from scratch and insert component nodes."""
+    fresh_tree = OrderedDict()
+    
+    for pathSeg, compItem in compMap.items():
+        compName = compItem['folder']
+        curNode = fresh_tree
+        
+        for seg in pathSeg:
+            if seg not in curNode:
+                curNode[seg] = OrderedDict() 
+            curNode = curNode[seg]
+            
+        curNode[compName] = OrderedDict({
+            "__type__": "component",
+            "__name__": compName,
+            "__yml__": compItem['yml'],
+            "__category__": compItem['category'] # Inject category into the tree
+        })
+        
+    return fresh_tree
+
+
+if os.path.isdir(COMPS_ROOT):
+    compMap = findComps(COMPS_ROOT)
+    fresh_tree = addCompsToTree(compMap)
+
+print(compMap)
+print(fresh_tree)
+
+
+

backend/server_new.py

@@ -0,0 +1,287 @@
+# import os
+# import yaml
+# from collections import OrderedDict
+# from flask import Flask, jsonify, send_from_directory, request, redirect, url_for, session, render_template
+# from werkzeug.security import check_password_hash
+# import database  # Imports the database.py you created earlier
+
+# # --- Path Configurations ---
+# BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+# FRONTEND_DIR = os.path.join(BASE_DIR, '..', 'frontend')
+
+# # Use os.path.join exclusively for cross-platform safety
+# YML_PATH = os.path.join(BASE_DIR, '..', 'mxpic', 'PDKs', 'Silterra', 'directories.yaml')
+# COMPS_ROOT = os.path.join(BASE_DIR, '..', 'mxpic', 'PDKs', 'Silterra')
+
+# # Initialize Flask, pointing to the frontend folder for HTML/CSS/JS
+# app = Flask(__name__, template_folder=FRONTEND_DIR, static_folder=FRONTEND_DIR)
+# app.secret_key = 'super_secret_mxpic_key' # Required for session management
+# app.json.sort_keys = False  # Keep dictionary order
+
+# # Ensure database tables exist when the server boots
+# database.init_db()
+
+# # --- YAML & PDK Parsing Helper Functions (Unchanged) ---
+# def countSpaces(line):
+#     """Count leading spaces (tab=4)."""
+#     expanded = line.expandtabs(4)
+#     return len(expanded) - len(expanded.lstrip(' '))
+
+# def buildTree(filepath):
+#     """Build nested tree from indented yaml."""
+#     if not os.path.exists(filepath):
+#         return OrderedDict()
+        
+#     with open(filepath, 'r', encoding='utf-8') as f:
+#         lines = f.readlines()
+
+#     rootIdx = None
+#     for i, line in enumerate(lines):
+#         if line.strip().startswith('root') and ':' in line.strip():
+#             rootIdx = i
+#             break
+#     if rootIdx is None:
+#         return OrderedDict()
+
+#     entries = []
+#     for line in lines[rootIdx + 1:]:
+#         stripped = line.strip()
+#         if not stripped or stripped.startswith('#'):
+#             continue
+#         if stripped.startswith('- '):
+#             spaceNum = countSpaces(line)
+#             # FIX 1: Strip trailing colons off the string so 'composites:' becomes 'composites'
+#             name = stripped[2:].strip().rstrip(':') 
+#             if name:
+#                 entries.append((spaceNum, name))
+
+#     if not entries:
+#         return OrderedDict()
+
+#     minIndent = min(indent for indent, _ in entries)
+#     nest = OrderedDict()
+#     levelStack = [(minIndent - 1, nest)]
+
+#     for spaceNum, name in entries:
+#         while levelStack and levelStack[-1][0] >= spaceNum:
+#             levelStack.pop()
+#         parent = levelStack[-1][1]
+#         child = OrderedDict()
+#         parent[name] = child
+#         levelStack.append((spaceNum, child))
+
+#     return nest
+
+# def addCompsToTree(compMap):
+#     """
+#     Build a completely fresh tree from scratch and insert component nodes.
+#     No previous tree object or inspection required.
+#     """
+#     # Initialize a clean, empty root tree
+#     fresh_tree = OrderedDict()
+    
+#     for pathSeg, compItem in compMap.items():
+#         compName = compItem['folder']
+#         curNode = fresh_tree
+        
+#         # Sequentially build the nested path segments dynamically
+#         for seg in pathSeg:
+#             if seg not in curNode:
+#                 curNode[seg] = OrderedDict() 
+#             curNode = curNode[seg]
+            
+#         # Place the component metadata dictionary into its leaf node
+#         curNode[compName] = OrderedDict({
+#             "__type__": "component",
+#             "__name__": compName,
+#             "__yml__": compItem['yml']
+#         })
+        
+#     return fresh_tree
+
+import os
+import yaml
+from collections import OrderedDict
+from flask import Flask, jsonify, send_from_directory, request, redirect, url_for, session, render_template
+from werkzeug.security import check_password_hash
+import database  
+
+# --- Path Configurations ---
+BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+FRONTEND_DIR = os.path.join(BASE_DIR, '..', 'frontend')
+
+YML_PATH = os.path.join(BASE_DIR, '..', 'mxpic', 'PDKs', 'Silterra', 'directories.yaml')
+COMPS_ROOT = os.path.join(BASE_DIR, '..', 'mxpic', 'PDKs', 'Silterra')
+# Define where your new icons folder is located (adjust if it's placed elsewhere)
+ICONS_DIR = os.path.join(BASE_DIR, 'icons') 
+
+app = Flask(__name__, template_folder=FRONTEND_DIR, static_folder=FRONTEND_DIR)
+app.secret_key = 'super_secret_mxpic_key' 
+app.json.sort_keys = False  
+
+database.init_db()
+
+# ... [Keep countSpaces and buildTree exactly as they are] ...
+
+def findComps(baseDir):
+    """Scan component folders, return map of paths -> component info."""
+    compMap = {}
+    refDir = baseDir
+    for root, dirs, files in os.walk(baseDir):
+        ymlFiles = [f for f in files if f.endswith('.yml')]
+        if ymlFiles:
+            parentDir = os.path.dirname(root)
+            relPath = os.path.relpath(parentDir, refDir)
+            parts = () if relPath == '.' else tuple(relPath.split(os.sep))
+            compName = os.path.basename(root)
+            
+            # Extract the category (the mother folder's name)
+            category = os.path.basename(parentDir)
+            
+            compMap[parts] = {
+                'folder': compName,
+                'yml': ymlFiles[0],
+                'category': category # Save the category to the map
+            }
+            dirs.clear()
+    return compMap
+
+def addCompsToTree(compMap):
+    """Build a completely fresh tree from scratch and insert component nodes."""
+    fresh_tree = OrderedDict()
+    
+    for pathSeg, compItem in compMap.items():
+        compName = compItem['folder']
+        curNode = fresh_tree
+        
+        for seg in pathSeg:
+            if seg not in curNode:
+                curNode[seg] = OrderedDict() 
+            curNode = curNode[seg]
+        
+        curNode[compName] = OrderedDict({
+            "__type__": "component",
+            "__name__": compName,
+            "__yml__": compItem['yml'],
+            "__category__": compItem['category'] # Inject category into the tree
+        })
+        
+    return fresh_tree
+
+# ... [Keep readCompYaml and Page Routes exactly as they are] ...
+
+# --- API ROUTES (Library, Components & Icons) ---
+
+@app.route('/api/icon/<category>')
+def getIcon(category):
+    """Serve the icon corresponding to the component category."""
+    # Look for an image matching the category name (e.g., edge_coupler.png)
+    for ext in ('.png', '.svg', '.jpg'):
+        icon_path = os.path.join(ICONS_DIR, f"{category}{ext}")
+        if os.path.exists(icon_path):
+            return send_from_directory(ICONS_DIR, f"{category}{ext}")
+            
+    # Optional: Return a default fallback icon if the specific one is missing
+    fallback = os.path.join(ICONS_DIR, "default.png")
+    if os.path.exists(fallback):
+        return send_from_directory(ICONS_DIR, "default.png")
+        
+    return jsonify({"error": "Icon not found"}), 404
+
+# ... [Keep existing API routes below] ...
+
+def readCompYaml(compName):
+    """Load YAML from component folder."""
+    for root, dirs, files in os.walk(COMPS_ROOT):
+        if os.path.basename(root) == compName:
+            dirs.clear()
+            ymlFiles = [f for f in files if f.endswith('.yml')]
+            if ymlFiles:
+                ymlPath = os.path.join(root, ymlFiles[0])
+                with open(ymlPath, 'r', encoding='utf-8') as f:
+                    return yaml.safe_load(f)
+    return None
+
+# --- AUTHENTICATION & PAGE ROUTES ---
+@app.route('/')
+def home():
+    """Route to login page, or bypass to dashboard if already authenticated."""
+    if 'user_id' in session:
+        return redirect(url_for('dashboard'))
+    return render_template('login.html')
+
+@app.route('/login', methods=['POST'])
+def login():
+    """Verify credentials against the database."""
+    username = request.form.get('username')
+    password = request.form.get('password')
+    
+    user = database.get_user(username)
+    
+    # Verify hash from database matches entered password
+    if user and check_password_hash(user[2], password):
+        session['user_id'] = user[0]
+        session['username'] = user[1]
+        return redirect(url_for('dashboard'))
+    else:
+        return render_template('login.html', error="Invalid username or password")
+
+@app.route('/dashboard')
+def dashboard():
+    """User project list."""
+    if 'user_id' not in session:
+        return redirect(url_for('home'))
+        
+    return render_template('dashboard.html', username=session['username'])
+
+@app.route('/canvas')
+def canvas():
+    """The main EDA editor."""
+    if 'user_id' not in session:
+        return redirect(url_for('home'))
+        
+    # Note: Ensure your old index.html is renamed to canvas.html in the frontend folder
+    return render_template('canvas.html')
+
+@app.route('/logout')
+def logout():
+    """Clear session and return to login."""
+    session.clear()
+    return redirect(url_for('home'))
+
+# --- API ROUTES (Library & Components) ---
+@app.route('/api/library')
+def getLib():
+    """Get library structure."""
+    # tree = buildTree(YML_PATH)
+    if os.path.isdir(COMPS_ROOT):
+        compMap = findComps(COMPS_ROOT)
+        fresh_tree = addCompsToTree(compMap)
+    return jsonify(fresh_tree)
+
+
+
+@app.route('/api/component/<component_name>')
+def getComp(component_name):
+    """Return component YAML data."""
+    data = readCompYaml(component_name)
+    if data is None:
+        return jsonify({"error": "Component not found"}), 404
+    return jsonify(data)
+
+@app.route('/api/component/<component_name>/image')
+def getCompImg(component_name):
+    """Return first image in component folder."""
+    for root, dirs, files in os.walk(COMPS_ROOT):
+        if os.path.basename(root) == component_name:
+            dirs.clear()
+            for ext in ('.png', '.jpg', '.jpeg', '.svg'):
+                for f in files:
+                    if f.lower().endswith(ext):
+                        return send_from_directory(root, f)
+            break
+    return jsonify({"error": "No image found"}), 404
+
+if __name__ == '__main__':
+    print("Starting mxpic EDA Server on http://127.0.0.1:3000")
+    app.run(host='127.0.0.1', port=3000, debug=True)

frontend/canvas.html

@@ -196,6 +196,7 @@
       useUpdateNodeInternals,
     } = window.ReactFlow;
 
+    // --- NODE DESIGN (Dark CAD Style) ---
     // --- NODE DESIGN (Dark CAD Style) ---
     const RotatableNode = ({ id, data, selected }) => {
       const updateNodeInternals = useUpdateNodeInternals();
@@ -216,20 +217,52 @@
 
       return (
         <div style={{
-          padding: '10px 20px', 
+          padding: '10px 15px', 
           border: selected ? '2px solid var(--accent)' : '1px solid var(--border)', 
           borderRadius: 6,
           background: 'var(--bg-card)', 
           color: 'var(--text-main)',
-          minWidth: 100, textAlign: 'center',
+          minWidth: 100, 
+          maxWidth: 140, /* Prevents node from getting too wide */
+          textAlign: 'center',
           position: 'relative', transform: `rotate(${data.rotation || 0}deg)`,
           transition: selected ? 'none' : 'transform 0.1s ease',
           boxSizing: 'border-box',
           boxShadow: selected ? '0 0 15px rgba(56, 189, 248, 0.2)' : '0 4px 6px rgba(0,0,0,0.3)',
           fontFamily: "'Inter', sans-serif",
-          fontSize: '0.85rem'
         }}>
-          <div>{data.componentDisplayName}</div>
+          
+          {/* Updated Icon and Title Layout */}
+          <div style={{ display: 'flex', flexDirection: 'column', alignItems: 'center', gap: '8px' }}>
+            {data.category && (
+              <img 
+                src={`/api/icon/${data.category}`} 
+                alt={data.category} 
+                style={{ 
+                  width: 128,  /* Increased from 32 */
+                  height: 64, /* Increased from 32 */
+                  objectFit: 'contain',
+                  pointerEvents: 'none' 
+                }}
+                onError={(e) => {
+                  e.currentTarget.style.display = 'none';
+                }}
+              />
+            )}
+            
+            {/* Shrunk the text and added ellipsis for long names */}
+            <div style={{
+              fontSize: '0.5rem', 
+              color: 'var(--text-muted)',
+              width: '100%',
+              overflow: 'hidden',
+              textOverflow: 'ellipsis',
+              whiteSpace: 'nowrap'
+            }} title={data.componentDisplayName}>
+              {data.componentDisplayName}
+            </div>
+          </div>
+
           <Handle type="source" position={Position.Left} id="port-lt-source" style={{ ...leftTopPort, zIndex: 10 }} />
           <Handle type="target" position={Position.Left} id="port-lt-target" style={{ ...leftTopPort, zIndex: 5 }} />
           <Handle type="source" position={Position.Left} id="port-lb-source" style={{ ...leftBottomPort, zIndex: 10 }} />
@@ -242,19 +275,29 @@
       );
     };
 
+
+
     const TreeNode = ({ name, children }) => {
       if (children && children.__type__ === 'component') {
         const componentName = children.__name__;
+        // Fallback to 'default' if category is somehow missing
+        const componentCategory = children.__category__ || 'default'; 
+        
         const handleDragStart = (event) => {
-          event.dataTransfer.setData('application/reactflow', componentName);
+          const dragData = JSON.stringify({ name: componentName, category: componentCategory });
+          console.log("🚀 DRAG START: Sending data ->", dragData); // <--- DEBUG LOG
+          event.dataTransfer.setData('application/reactflow', dragData);
           event.dataTransfer.effectAllowed = 'move';
         };
+        
         return (
           <div className="component-leaf" draggable onDragStart={handleDragStart}>
             <span style={{color: 'var(--accent)', marginRight: '4px'}}>❖</span> {name}
           </div>
         );
       }
+      // ... keep the rest of TreeNode unchanged
+      // ... keep the rest of TreeNode unchanged
 
       const hasChildren = children && Object.keys(children).length > 0;
       return (
@@ -778,24 +821,44 @@
 
       const onDrop = useCallback((event) => {
         event.preventDefault();
-        const type = event.dataTransfer.getData('application/reactflow');
-        if (!type) return;
+        const rawData = event.dataTransfer.getData('application/reactflow');
+        console.log("📥 DROP EVENT: Received raw data ->", rawData); // <--- DEBUG LOG
+        
+        if (!rawData) {
+            console.error("Drop failed: No data received!");
+            return;
+        }
+        
+        let parsedData;
+        try {
+          parsedData = JSON.parse(rawData);
+          console.log("✅ PARSED JSON SUCCESS:", parsedData); // <--- DEBUG LOG
+        } catch (error) {
+          console.warn("⚠️ JSON Parse Failed. Falling back to string format.", rawData);
+          parsedData = { name: rawData, category: 'default' };
+        }
+        
         const position = reactFlowInstance.screenToFlowPosition({
           x: event.clientX,
           y: event.clientY,
         });
+        
         const componentDisplayName = generateComponentDisplayName();
+        
         const newNode = {
           id: Date.now().toString(),
           type: 'rotatableNode',
           position,
           data: {
-            label: type,
-            componentName: type,
+            label: parsedData.name,
+            componentName: parsedData.name,
+            category: parsedData.category, 
             rotation: 0,
             componentDisplayName: componentDisplayName
           },
         };
+        
+        console.log("✨ ADDING NEW NODE TO CANVAS:", newNode); // <--- DEBUG LOG
         setNodes((nds) => nds.concat(newNode));
       }, [setNodes, reactFlowInstance, generateComponentDisplayName]);