feat: migrate Canvas and Groups API to Prisma ORM

prisma/schema.prisma

@@ -5,6 +5,7 @@ generator client {
 
 datasource db {
   provider = "postgresql"
+  url      = env("DATABASE_URL")
 }
 
 model User {
@@ -44,49 +45,13 @@ model Canvas {
   ownerId   String
   groupId   String?
   isPublic  Boolean  @default(false)
+  nodes     Json     @default("[]")
+  edges     Json     @default("[]")
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
 
-  nodes     CanvasNode[]
-  edges     CanvasEdge[]
-  owner     User          @relation(fields: [ownerId], references: [id], onDelete: Cascade)
-  group     Group?        @relation(fields: [groupId], references: [id], onDelete: SetNull)
-}
-
-model CanvasNode {
-  id          String  @id
-  canvasId    String
-  type        String
-  x           Float
-  y           Float
-  width       Float
-  height      Float
-  text        String?
-  file        String?
-  state       String?
-  label       String?
-  assignedTo  String?
-  alarm       String?
-  scriptId    String?
-  prompt      String?
-  url         String?
-  method      String?
-  repo        String?
-  branch      String?
-  styleJson   String?
-
-  canvas Canvas @relation(fields: [canvasId], references: [id], onDelete: Cascade)
-}
-
-model CanvasEdge {
-  id        String @id
-  canvasId  String
-  fromNode  String
-  fromSide  String
-  toNode    String
-  toSide    String
-
-  canvas Canvas @relation(fields: [canvasId], references: [id], onDelete: Cascade)
+  owner     User   @relation(fields: [ownerId], references: [id], onDelete: Cascade)
+  group     Group? @relation(fields: [groupId], references: [id], onDelete: SetNull)
 }
 
 model Group {