feat(prisma): add user and problem relations to Submission model

prisma/schema.prisma

@@ -32,6 +32,7 @@ model User {
 
   role       Role         @default(GUEST)
   problems   Problem[]
+  Submission Submission[]
 
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
@@ -53,11 +54,11 @@ model Problem {
   published   Boolean      @default(false)
   userId      String
   user        User         @relation(fields: [userId], references: [id], onDelete: Cascade)
-  templates   Template[]
-  testcases   Testcase[]
-
   timeLimit   Int          @default(1000)
   memoryLimit Int          @default(128)
+  templates   Template[]
+  testcases   Testcase[]
+  Submission  Submission[]
 
   @@index([userId])
   @@index([difficulty])
@@ -110,23 +111,38 @@ model Template {
   @@id([problemId, language])
 }
 
-enum ExitCode {
-  SE // System Error
-  CS // Compilation Success
+enum Status {
+  PD // PENDING
+  QD // QUEUED
+  CP // COMPILING
   CE // Compilation Error
+  CS // Compilation Success
+  RU // RUNNING
   TLE // Time Limit Exceeded
   MLE // Memory Limit Exceeded
   RE // Runtime Error
   AC // Accepted
   WA // Wrong Answer
+  SE // System Error
 }
 
-model JudgeResult {
+model Submission {
   id            String         @id @default(cuid())
-  output        String
-  exitCode      ExitCode
+  language      EditorLanguage
+  code          String
+  status        Status
+  message       String?
   executionTime Int?
   memoryUsage   Int?
+
+  userId    String
+  problemId String
+
+  user    User    @relation(fields: [userId], references: [id], onDelete: Cascade)
+  problem Problem @relation(fields: [problemId], references: [id], onDelete: Cascade)
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
 }
 
 model Testcase {