lms-sb/prisma/schema.prisma

generator client {
  provider = "prisma-client"
  output   = "../src/generated/prisma"
}

datasource db {
  provider = "postgresql"
}

// ─────────────────────────────────────────────
// Better Auth core tables
// ─────────────────────────────────────────────

model User {
  id            String    @id @default(cuid())
  name          String
  email         String    @unique
  emailVerified Boolean   @default(false)
  image         String?
  role          String    @default("student") // student | curator | admin
  banned        Boolean?  @default(false)
  banReason     String?
  banExpires    DateTime?
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt

  sessions    Session[]
  accounts    Account[]
  enrollments CourseEnrollment[]
  progress    LessonProgress[]
  submissions HomeworkSubmission[]
  comments    LessonComment[]
  feedbacks   HomeworkFeedback[]
}

model Session {
  id        String   @id @default(cuid())
  userId    String
  token     String   @unique
  expiresAt DateTime
  ipAddress String?
  userAgent String?
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
}

model Account {
  id                    String    @id @default(cuid())
  userId                String
  accountId             String
  providerId            String
  accessToken           String?
  refreshToken          String?
  idToken               String?
  accessTokenExpiresAt  DateTime?
  refreshTokenExpiresAt DateTime?
  scope                 String?
  password              String?
  createdAt             DateTime  @default(now())
  updatedAt             DateTime  @updatedAt

  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
}

model Verification {
  id         String   @id @default(cuid())
  identifier String
  value      String
  expiresAt  DateTime
  createdAt  DateTime @default(now())
  updatedAt  DateTime @updatedAt
}

// ─────────────────────────────────────────────
// LMS core tables
// ─────────────────────────────────────────────

model Course {
  id          String   @id @default(cuid())
  slug        String   @unique
  title       String
  description String?
  coverImage  String?
  published   Boolean  @default(false)
  order       Int      @default(0)
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  modules     Module[]
  enrollments CourseEnrollment[]
}

model Module {
  id        String   @id @default(cuid())
  courseId  String
  title     String
  order     Int      @default(0)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  course  Course   @relation(fields: [courseId], references: [id], onDelete: Cascade)
  lessons Lesson[]
}

model Lesson {
  id          String   @id @default(cuid())
  moduleId    String
  title       String
  content     Json?
  kinescopeId String?
  order       Int      @default(0)
  published   Boolean  @default(false)
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  module   Module           @relation(fields: [moduleId], references: [id], onDelete: Cascade)
  progress LessonProgress[]
  quiz     Quiz?
  homework Homework?
  comments LessonComment[]
  files    LessonFile[]
}

model LessonFile {
  id        String   @id @default(cuid())
  lessonId  String
  name      String
  url       String
  size      Int
  createdAt DateTime @default(now())

  lesson Lesson @relation(fields: [lessonId], references: [id], onDelete: Cascade)
}

model CourseEnrollment {
  userId     String
  courseId   String
  enrolledAt DateTime @default(now())

  user   User   @relation(fields: [userId], references: [id], onDelete: Cascade)
  course Course @relation(fields: [courseId], references: [id], onDelete: Cascade)

  @@id([userId, courseId])
}

model LessonProgress {
  userId      String
  lessonId    String
  completedAt DateTime @default(now())

  user   User   @relation(fields: [userId], references: [id], onDelete: Cascade)
  lesson Lesson @relation(fields: [lessonId], references: [id], onDelete: Cascade)

  @@id([userId, lessonId])
}

// ─────────────────────────────────────────────
// Quizzes
// ─────────────────────────────────────────────

model Quiz {
  id          String   @id @default(cuid())
  lessonId    String   @unique
  showAnswers Boolean  @default(true)
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  lesson    Lesson         @relation(fields: [lessonId], references: [id], onDelete: Cascade)
  questions QuizQuestion[]
  attempts  QuizAttempt[]
}

model QuizQuestion {
  id     String           @id @default(cuid())
  quizId String
  text   String
  type   QuizQuestionType
  order  Int              @default(0)

  quiz    Quiz         @relation(fields: [quizId], references: [id], onDelete: Cascade)
  options QuizOption[]
}

model QuizOption {
  id         String  @id @default(cuid())
  questionId String
  text       String
  isCorrect  Boolean @default(false)
  order      Int     @default(0)

  question QuizQuestion @relation(fields: [questionId], references: [id], onDelete: Cascade)
}

model QuizAttempt {
  id          String   @id @default(cuid())
  userId      String
  quizId      String
  score       Int
  answers     Json
  completedAt DateTime @default(now())

  quiz Quiz @relation(fields: [quizId], references: [id], onDelete: Cascade)
}

enum QuizQuestionType {
  SINGLE
  MULTIPLE
  TEXT
}

// ─────────────────────────────────────────────
// Homework
// ─────────────────────────────────────────────

model Homework {
  id          String   @id @default(cuid())
  lessonId    String   @unique
  description String
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  lesson      Lesson               @relation(fields: [lessonId], references: [id], onDelete: Cascade)
  submissions HomeworkSubmission[]
}

model HomeworkSubmission {
  id         String   @id @default(cuid())
  homeworkId String
  userId     String
  text       String?
  files      Json?
  submittedAt DateTime @default(now())

  homework  Homework           @relation(fields: [homeworkId], references: [id], onDelete: Cascade)
  user      User               @relation(fields: [userId], references: [id], onDelete: Cascade)
  feedbacks HomeworkFeedback[]
}

model HomeworkFeedback {
  id           String   @id @default(cuid())
  submissionId String
  curatorId    String
  text         String
  createdAt    DateTime @default(now())

  submission HomeworkSubmission @relation(fields: [submissionId], references: [id], onDelete: Cascade)
  curator    User               @relation(fields: [curatorId], references: [id], onDelete: Cascade)
}

// ─────────────────────────────────────────────
// Comments
// ─────────────────────────────────────────────

model LessonComment {
  id        String   @id @default(cuid())
  lessonId  String
  userId    String
  text      String
  deleted   Boolean  @default(false)
  createdAt DateTime @default(now())

  lesson Lesson @relation(fields: [lessonId], references: [id], onDelete: Cascade)
  user   User   @relation(fields: [userId], references: [id], onDelete: Cascade)
}