feat: migrate Canvas and Groups API to Prisma ORM

app/server/api/canvas/index.post.ts

@@ -1,36 +1,32 @@
 import { requireAuth } from '~/server/utils/auth'
-import { canvases, userGroups } from '~/server/utils/db'
-import type { CanvasData } from '~/server/utils/db'
+import { prisma } from '~/server/utils/prisma'
 
 export default defineEventHandler(async (event) => {
   const user = requireAuth(event)
   const body = await readBody(event)
   const { name = 'New Canvas', nodes = [], edges = [], isPublic = false, groupId } = body
 
-  // Check group permissions if groupId is provided
   if (groupId) {
-    const membership = Array.from(userGroups.values()).find(
-      m => m.userId === user.id && m.groupId === groupId
-    )
+    const membership = await prisma.groupMember.findUnique({
+      where: { userId_groupId: { userId: user.id, groupId } }
+    })
     if (!membership) {
       throw createError({ statusCode: 403, message: 'Not a member of this group' })
     }
   }
 
   const id = `canvas-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
-  const canvas: CanvasData = {
-    id,
-    name,
-    nodes,
-    edges,
-    createdAt: new Date().toISOString(),
-    updatedAt: new Date().toISOString(),
-    ownerId: user.id,
-    groupId,
-    isPublic
-  }
-
-  canvases.set(id, canvas)
+  const canvas = await prisma.canvas.create({
+    data: {
+      id,
+      name,
+      nodes,
+      edges,
+      isPublic,
+      ownerId: user.id,
+      groupId: groupId || null
+    }
+  })
 
   return { canvas }
-})  
+})