Добавил систему чатов

prisma/schema.prisma

@@ -42,14 +42,17 @@ model timetable {
 }
 
 model users {
-  id           Int            @id(map: "pk_users") @default(autoincrement())
-  login        String         @unique @db.VarChar(25)
-  pass         String         @db.VarChar(100)
-  fullName     String?        @db.VarChar(100)
-  is_admin     Boolean        @default(false)
-  lore         String?        @db.Text()
+  id       Int     @id(map: "pk_users") @default(autoincrement())
+  login    String  @unique @db.VarChar(25)
+  pass     String  @db.VarChar(100)
+  fullName String? @db.VarChar(100)
+  is_admin Boolean @default(false)
+  lore     String? @db.Text()
+
   timetable    timetable[]
   user_session user_session[]
+  chat_message chat_message[]
+  user_in_chat user_in_chat[]
 }
 
 model user_session {
@@ -58,3 +61,33 @@ model user_session {
 
   user users @relation(fields: [usersId], references: [id])
 }
+
+model chat {
+  id    String @id @default(uuid())
+  title String
+
+  chat_message chat_message[]
+  user_in_chat user_in_chat[]
+}
+
+model chat_message {
+  id   String @id @default(uuid())
+  text String
+
+  user users @relation(fields: [userId], references: [id])
+  chat chat  @relation(fields: [chatId], references: [id])
+
+  sendAt DateTime @default(now())
+
+  chatId String
+  userId Int
+}
+
+model user_in_chat {
+  id     Int    @id @default(autoincrement())
+  chatId String
+  userId Int
+
+  chat chat  @relation(fields: [chatId], references: [id])
+  user users @relation(fields: [userId], references: [id])
+}